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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Polymer Society of Korea
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Volume 39, Issue 3 - May 2015
Volume 39, Issue 2 - Mar 2015
Volume 39, Issue 1 - Jan 2015
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Synthesis and Characterization of pH-sensitive and Self-oscillating IPN Hydrogel in a pH Oscillator
Wang, Liping ; Ren, Jie ; Zhang, Xiaoyan ; Yang, Xiaoci ; Yang, Wu ;
Polymer Korea, volume 39, issue 3, 2015, Pages 359~364
DOI : 10.7317/pk.2015.39.3.359
A self-oscillating interpenetrating polymer network (IPN) poly(acrylic acid)/poly(ethylene glycol) (PAA/PEG) hydrogel was prepared by using radical polymerization with a two-step method. The IPN hydrogel was characterized by FTIR spectroscopy and morphological analysis. The results indicated that the chains of PEG and PAA twined to form porous structure which is beneficial to water molecules entering inside of the hydrogel. In addition, the pH-responsive behavior, salt sensitivity, swelling/de-swelling oscillatory behaviors and self-oscillation in a closed pH oscillator were also studied. The results showed that the prepared hydrogel exhibited pH-sensitivity, good swelling/de-swelling reversibility and excellent salt sensitivity. The self-oscillating behavior of swelling/de-swelling for the prepared hydrogel was caused by pH alteration coupled with the external media. This study may create a new possibility as biomaterial including new self-walking actuators and other related devices.
Polymerization of L-lactide Using Methylalumionxane
Yim, Jin-Heong ; Kim, Da Hee ; Ko, Young Soo ;
Polymer Korea, volume 39, issue 3, 2015, Pages 365~369
DOI : 10.7317/pk.2015.39.3.365
In this study, the bulk and solution polymerizations of L-lactide using an aluminium compound, methylaluminoxane (MAO), were performed. In the bulk polymerization, the conversion of polymerization was increased with increasing the amount of catalyst in feed. The largest molecular weight (Mw), 60800 g/mol, was shown at the MAO amount in feed of 0.15 mmol, and Mw was decreased above 0.15 mmol of MAO in feed. At the 0.15 mmol of MAO in feed, turn of frequency (TOF) was the highest, and it was decreased with increasing MAO amount in feed. In the solution polymerization, the induction time of 30 min was shown. The conversion of polymerization was linearly increased with the polymerization time, and the highest Mw, 54700 g/mol, was achieved at the polymerization time of 6 h.
Studies on Depletion Layer of Probe Particles in the System of Poly(vinyl acetate)/Dimethyl Sulfoxide by Dynamic Light Scattering
Jeon, Guk Jin ; Jang, Jinho ; Park, Il Hyun ;
Polymer Korea, volume 39, issue 3, 2015, Pages 370~381
DOI : 10.7317/pk.2015.39.3.370
In the system of poly(vinyl alcohol) (PVA)/dimethyl sulfoxide, the refractive index of polymer was very well matched to that of solvent and thus its scattered intensity could be minimized. After adding small amount of polystyrene latex particle (nominal diameter 200 nm), diffusion behavior of only probe particle was investigated against the concentration of polymer matrix by means of dynamic light scattering. The polymer concentration dependence of its reduced diffusion coefficient was able to be analysed with the stretched exponential function of the reduced concentration
. In very dilute concentration regime, the depletion layer kept constant but at the early semi-dilute regime of
, the concentration-dependent exponent of depletion layer
was appeared to be -0.8 which was very close to theoretical one of -0.85. However it was also observed at the higher concentration that its layer thickness decreased more abruptly than theoretical expectation and this phenomenon was ascribed to Oosawa type attractive interaction between adjacent latex particles.
Effect of Sodium Lignosulfonate Treatment on the Dispersion of CaCO
Song, Junyoung ; Kwark, Young-Je ; Jeong, Youngjin ;
Polymer Korea, volume 39, issue 3, 2015, Pages 382~387
DOI : 10.7317/pk.2015.39.3.382
The dispersion of calcium carbonate (
) in polypropylene (PP) and the effect of
size on the crystallinity of PP were studied. Polymer composite usually suffers from the brittleness when reinforced with inorganic fillers. The problem is generally related to the size and dispersion of fillers. First, the dispersion was studied for the nanosize
with 15~40 nm average diameter. To enhance the dispersibility in PP, the surface of the
was treated with sodium lignosulfonate (SLS).
/PP composites were prepared via melt compounding. The
coated with more than 3 wt% SLS was uniformly distributed within the PP matrix, while the uncoated
formed aggregated structures in the PP. Even with 30 wt%, the SLS-
was well dispersed in the PP matrix. Also, the transition enthalpy of
/PP increased and the full-width of half maximum of the crystallization peak decreased regardless of SLS coating and size of
. However, the crystallinity of PP was more influenced by nano
. These results imply that the nano
coated with SLS may reduce the brittleness of polymer composites.
Effect of Low Molecular Weight Species on the Interfacial Tension of PC/SAN Blend
Yang, Dongjin ; Son, Younggon ;
Polymer Korea, volume 39, issue 3, 2015, Pages 388~393
DOI : 10.7317/pk.2015.39.3.388
Low molecular weight species were extracted from PC and SAN by a solvent extraction method in order to investigate the effect of low molecular weight species on interfacial tension and affinity between PC and SAN. From the analysis of molecular weight distribution by the GPC, it was confirmed that the low molecular weight species were effectively eliminated by the solvent extraction. Interfacial tension measurements and morphological observation were carried out with the PC and SAN of which the low molecular weight species were extracted. Interfacial tension was increased and the infinity was decreased for the extracted PC and SAN pair. This result implied that the low molecular weight species play a role as a compatibilizer between two polymers. Among two polymers, low molecular weight SAN contributes more in the compatibilization. Thus, it is favorable to use SAN containing a larger amount of low molecular weight species in fabrication of PC/ABS blend.
Modification of Polyacrylonitrile Films by Hydroxylamine and Hydrazine Treatment
Park, Hee Jung ; Kim, Young Ho ;
Polymer Korea, volume 39, issue 3, 2015, Pages 394~402
DOI : 10.7317/pk.2015.39.3.394
Modification of polyacrylonitrile (PAN) films by using hydroxylamine (HA) and hydrazine to produce hydroxyl and amine groups, respectively, and to introduce cross-linking of PAN polymers was studied. Modified PAN films obtained by HA and/or hydrazine treatment including a successive or a simultaneous process were analyzed by the degree of conversion, water and N,N'-dimethylformamide (DMF) swelling ratio, FTIR spectra, atom content, and thermal analysis data. PAN films reacted with HA showed increased hydrophilicity and low dimensional stability in water. Hydrazine treatment gave PAN films high dimensional stability of low DMF swelling. Although the DMF swelling ratio of the modified PAN films was dramatically decreased by the successive treatment of hydrazine and HA, the introduction of the hydrophilic functional groups was limited due to the cross-linking. Simultaneous treatment of HA and hydrazine was the most effective method to increase hydrophilicity of PAN films with a high dimensional stability.
Synthesis and Solution Properties of Fluorinated Amphiphilic Polyacrylamide
Zhao, Fangyuan ; Du, Kai ; Yi, Zhuo ; Du, Chao ; Fang, Zhao ; Mao, Bingquan ;
Polymer Korea, volume 39, issue 3, 2015, Pages 403~411
DOI : 10.7317/pk.2015.39.3.403
A series of hydrophobically associating fluorinated amphiphilic polyacrylamide copolymers with remarkably high heat resistance and salt tolerance were synthesized by free radical micellar copolymerization, using acrylamide (AM) and sodium 2-acrylamido-tetradecane sulfonate (
) as amphiphilic monomers, and 2-(perfluorooctyl) ethyl acrylate (PFHEA) as hydrophobic monomer. The structure of the terpolymer was characterized by FTIR,
NMR. The solution properties of the terpolymers were investigated in details, and the results showed that the terpolymer solution had strong intermolecular hydrophobic association as the concentration exceeded the critical association concentration 1.5 g/L. The terpolymer solution possessed high surface activity, viscoelasticity, excellent heat resistance, salt tolerance and shearing resistance. The viscosity retention rate of copolymer solution was as high as 59.9% under the condition of fresh wastewater,
and a 60-days aging test.
Effect of the Mechanical Properties of Cell-Interactive Hydrogels on a Control of Cell Phenotype
Kim, Do Yun ; Park, Honghyun ; Lee, Kuen Yong ;
Polymer Korea, volume 39, issue 3, 2015, Pages 412~417
DOI : 10.7317/pk.2015.39.3.412
A critical element in tissue engineering approaches is a control of the mechanical properties of polymer scaffolds to regulate cell phenotype, which may lead to clinically successful tissue regeneration. In this study, we hypothesized that gel stiffness could be a key factor to manipulate adhesion and proliferation of different types of cells. RGD-modified alginate gels with various mechanical properties were prepared and used as a substrate for MC3T3-E1 and H9C2 cells. Adhesion and growth rate of MC3T3-E1 cells in vitro were increased in parallel with an increase of gel stiffness. In contrast, those of H9C2 cells were decreased. This approach to control the mechanical properties of polymer scaffolds depending on the cell types may find useful applications in the tissue engineering.
Development of Acrylic Acid Grafted Polycaprolactone (PCL)/Biphasic Calcium Phosphate (BCP) Nanofibers for Bone Tissue Engineering Using Gamma-Irradiation
Jeong, Jin-Oh ; Jeong, Sung In ; Shin, Young Min ; Park, Jong-Seok ; Gwon, Hui-Jeong ; An, Sung-Jun ; Huh, Jung-Bo ; Shin, Heungsoo ; Lim, Youn-Mook ;
Polymer Korea, volume 39, issue 3, 2015, Pages 418~425
DOI : 10.7317/pk.2015.39.3.418
Polycaprolactone (PCL) and biphasic calcium phosphate (BCP) have been considered as useful materials for orthopedic devices and osseous implants because of their biocompatibility and bone-forming activity. However, PCL-based scaffolds have hydrophobic surfaces reducing initial cell adhesion or proliferation. To overcome the limitation, we fabricated surface-modified PCL/BCP nanofibers using gamma-irradiation for bone tissue engineering. PCL/BCP nanofibers were prepared by electrospinning and then we supplemented hydrophilicity by introducing acrylic acid (AAc) through gamma-irradiation. We confirmed the surface of nanofibers by SEM, and then the initial viability of MG63 was significantly increased on the AAc grafted nanofibers, and alkaline phosphatase activity(
) improved on the modified nanofibers than that on the non-modified nanofibers(
). Therefore, AAc-grafted nanofibers may be a good tool for bone tissue engineering applications.
Mechanical Property and Thermal Stability of Epoxy Composites Containing Poly(ether sulfone)
Lee, Si-Eun ; Park, Mi-Seon ; Jeong, Euigyung ; Lee, Man Young ; Lee, Min-Kyung ; Lee, Young-Seak ;
Polymer Korea, volume 39, issue 3, 2015, Pages 426~432
DOI : 10.7317/pk.2015.39.3.426
Poly(ether sulfone) (PES) embedded diglycidylether of bisphenol-A (DGEBA) epoxy composites were fabricated for improving its mechanical properties and thermal stability. The mechanical properties such as tensile, flexural and impact strength of the composites changed significantly with the introduction of PES. The value of the fracture toughness of this composite also was increased remarkably about 24%. Thermal stability of PES/epoxy composites also improved 12%, which was calculated with integral procedural decomposition temperature (IPDT). From the differential scanning calorimeter (DSC) result, the curing temperature and curing heat decreased according to the increase of PES contents. These were attributed to the good distribution and the formation of the semi-interpenetrating polymer networks (semi-IPNs) composed of the epoxy network and linear PES.
Flame Retardancy and Physical Properties of Ethylene Vinyl Acetate/Aluminum Trihydroxide Composites
Lee, Minho ; Yu, Dayeong ; Kim, Yeongho ; Lee, Sunghee ; Kim, Jeong Ho ; Lee, Young Chul ;
Polymer Korea, volume 39, issue 3, 2015, Pages 433~440
DOI : 10.7317/pk.2015.39.3.433
Aluminum trihydroxide (ATH) has been commonly employed as a flame retardant for ethylene vinyl acetate (EVA) copolymers. In the present work, ATH was obtained from a recycling process of multi-layer packaging film wastes. EVA/ATH composite samples were prepared using a two roll-mill and flame retardancy of EVA/ATH composites were examined using limiting oxygen index (LOI) and flame retardancy test (UL94). We observed excellent flame retardancy in case of adding 150 phr or more of recycled ATH to EVA. Particle size and specific surface area play crucial roles in LOI value and UL-94 classification of the EVA/ATH composites. Smaller particle size and higher specific surface area of ATH was found out to improve the flame retardancy. Regarding tensile properties, crosslinked EVA/ATH compounds which is practically used for electric cables had similar to or even better tensile property values than the ones without ATH.
Influence of Screw Rotors Tip Angle on Mixing Performance for One Novel Twin-screw Kneader
Wei, Jing ; Chen, Dabing ; Zhou, Dongming ; Zhang, Aiqiang ; Yang, Yuliang ;
Polymer Korea, volume 39, issue 3, 2015, Pages 441~452
DOI : 10.7317/pk.2015.39.3.441
Twin-screw kneader is an efficient polymer processing equipment. In this paper, the mixing performance of one novel intermeshing counter-rotating twin-screw kneader with different tip angles of the male rotor is simulated using the mesh superimposition technique (MST). Statistical analysis is carried out for the flow field using particle tracking technique, and distributive mixing performance is evaluated using the residence time distribution and segregation scale, while the dispersive mixing performance is estimated using the parameters such as shear rate, stretching rate and mixing index. The results show that the best distributive mixing performance is achieved when the tip angle is 0o, while the optimal dispersive mixing performance is obtained when the tip angle is 20o. The results in this paper provide a data basis for the selection of parameters and optimization of the performance for the screw rotors.
A Faster Approach to Stereocomplex Formation of High Molecular Weight Polylactide Using Supercritical Dimethyl Ether
Bibi, Gulnaz ; Jung, Youngmee ; Lim, Jong Choo ; Kim, Soo Hyun ;
Polymer Korea, volume 39, issue 3, 2015, Pages 453~460
DOI : 10.7317/pk.2015.39.3.453
Engineering the polylactide via stereocomplexation with supercritical fluid (SCF) technology paved way to fabricate polymers with enhanced thermal and mechanical properties. We aimed to establish a SCF medium with excellent solubility for PLA without any additional solvent/co-solvent. We, therefore, employed supercritical dimethyl ether to synthesize 100% stereocomplex polylactide from high molecular weight homopolymers with an excellent yield. The remarkable solubility of the homopolymers in dimethyl ether is the key for quick conversion to s-PLA. This study proves a rapid synthesis route of dry s-PLA powder with sc-DME at 250 bar,
and 1.5 h, which are reasonably achievable processing parameters compared to the conventional methods. The degree of stereocomplexation was evaluated under the effect of pressures, temperatures, times, homopolymer-concentrations and molecular weights. An increment in the degree of stereocomplexation was observed with increased temperature and pressure. Complete conversion to s-PLA was obtained for PLLA and PDLA with
with a total homopolymer to total DME ratio of 6:100% w/w at prescribed reaction conditions. The degree of stereocomplexation was determined by DSC and confirmed by XRD. Considerable improvement in thermo-mechanical properties of s-PLA was observed. DSC and TGA analyses proved a
enhancement in melting transition and a high onset temperature for thermal degradation of s-PLA respectively.
Effect of Imidazole and Surfactant on the Opto-Electrical Properties of PEDOT Thin Films via Vapor Phase Polymerization
Khadka, Roshan ; Yim, Jin-Heong ;
Polymer Korea, volume 39, issue 3, 2015, Pages 461~467
DOI : 10.7317/pk.2015.39.3.461
This paper reports the combined effects of the triblock copolymer surfactant poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) (PEG-PPG-PEG) and imidazole on the opto-electrical and mechanical properties of poly(3,4-ethylenedioxythiophene) (PEDOT)-based thin films prepared via vapor phase polymerization (VPP) using ferric p-toluenesulfonate as a catalyst. Various PEDOT-based thin films were synthesized using PEG-PPG-PEG and imidazole alone and in combination to compare and correlate their effects on film properties. The improved conductivity of the PEDOT films was higher than
when the surfactant and imidazole were used together. The PEG-PPG-PEG chain length was also varied to identify the best conditions for the VPP-based preparation of PEDOT thin films.
Preparation and Properties of Polystyrene/Graphene Nanofiller Nanocomposites via Latex Technology
Yeom, Hyo Yeol ; Na, Hyo Yeol ; Chung, Dae-Won ; Lee, Seong Jae ;
Polymer Korea, volume 39, issue 3, 2015, Pages 468~474
DOI : 10.7317/pk.2015.39.3.468
Electrically conductive polymer nanocomposites were prepared by the inclusion of graphene-based nanofillers. Graphene oxide (GO) and reduced graphene oxide wrapped by poly(styrene sulfonate) (PSS-RGO) were used as nanofillers to make good dispersion with the aqueous dispersion of polystyrene (PS) particles. GO sheets were synthesized by the modified Hummers' method from graphite, and PSS-RGO sheets were prepared by the reduction of GO-dispersed PSS solution with hydrazine monohydrate. Morphology and properties of PS/GO and PS/PSS-RGO nanocomposites via latex technology were investigated. Both nanofillers showed well dispersed morphology in PS matrix. Rheological and electrical percolation thresholds were 0.28 and 0.51 wt% for GO, and 0.50 and 1.01 wt% for PSS-RGO respectively. It is speculated that PS/GO nanocomposites showed better conductivity than PS/PSS-RGO counterparts due to the partial recovery of GO by thermal reduction during molding.
Analysis of Morphology and Viscoelastic Behavior of LCP/PET Blends by Repeated Extrusion
Choi, Yong Seok ; Jeon, Han-Yong ;
Polymer Korea, volume 39, issue 3, 2015, Pages 475~479
DOI : 10.7317/pk.2015.39.3.475
Droplet distribution of LCP(Vectra 950) and PET blend by repeated extrusion was examined through morphology analysis. Repeated extrusion was respectively proceeded twice and three times with blending condition and droplet distribution of only once extrusion sample showed uniform shape. However, droplet size of twice and three times extrusion samples increased and it was confirmed that droplets were concentrated on the center of specimens. It is thought that this phenomena were due to the compatibility and viscoelastic behavior of LCP/PET blend. Finally, it is thought that fiber manufacturing of different diameter is possible from spinning of repeated extrusion LCP/PET blended chip under same spinning condition.
Thermosensitive Chitosan-based Hydrogel with Growth Factor as Adhesion Barrier
Park, Jun-Kyu ; Nah, Jae-Woon ; Choi, Changyong ;
Polymer Korea, volume 39, issue 3, 2015, Pages 480~486
DOI : 10.7317/pk.2015.39.3.480
The adhesion of tissue and organ occur with frequency after surgery. Theomosensitive hydrogel was prepared from poloxamer/chitosan/epidermal growth factor as adhesion barrier agent. The prepared hydrogel showed sol-gel transition temperatures around human temperature and gelation temperature was the faster within 1 min. The hydrogel sustained the release of epidermal grow factor during 7 days. The hydrogel was highly effective for the prevention of tissue and organ adhesion in rat model. The thermosensitive and antibacterial chitosan hydrogel can be useful to consider the anti-adhesion barrier with increased adhesion of organ and sustained release of epidermal growth factor.
Addition Polymerization of 5-Norbornene-2-carboxylic Acid Esters Using Palladium Catalyst System: Synthesis of Monomers, Effect of Their Stereochemistry on Polymerization Behavior
Chung, Hae-Kang ; Shim, Hyoug-Sub ; Jeon, Seung-Ho ; Kim, Ji-Heung ; Nam, Sung Woo ; Jeon, Boong Soo ; Kim, Young Jun ;
Polymer Korea, volume 39, issue 3, 2015, Pages 487~492
DOI : 10.7317/pk.2015.39.3.487
The effects of chemical structure of alkyl groups of norbornene carboxylic alkyl esters(methyl, octyl, 4-chlorobenzyl) and endo/exo ratios of norbornene monomers on activity of palladium catalyst and polymerization behavior were investigated. Norbornene ester monomers were synthesized from the reaction of 5-norborene-2-carboxylic acid and various alcohols. Polymerization catalyst, di-
-chloro-bis(-methoxybicyclo[2,2,1]-hept-2-ene)palladium(II) (DCBMP), was synthesized according to the literature procedure and silver hexafluoroantimonate (
) was used as a conjugate anion source. Gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) were the principal techniques for polymer characterization and
NMR spectroscopy was used for chemical structures determination of monomers and polymers. For all of the norbonene alkyl esters GPC data showed that when the amounts of endo isomers exceeded those of exo isomers decreased molecular weight polymers were obtained probably due to the decreased catalyst activity. Polymerizations were conducted by varying the monomer/catalyst mole ratios (100:1, 200:1, 300:1). When 300:1 monomer/catalyst ratio was employed it was possible to synthesize high molecular weight (
), film forming polymer from exo-norbornene carboxylic acid octyl ester.
Effect of Duck's Feet Derived Collagen Sponge on Skin Regeneration: In Vitro Study
Cha, Se Rom ; Jeong, Hyun Ki ; Kim, Su Young ; Kim, Eun Young ; Song, Jeong Eun ; Park, Chan Hum ; Kwon, Soon Yong ; Khang, Gilson ;
Polymer Korea, volume 39, issue 3, 2015, Pages 493~498
DOI : 10.7317/pk.2015.39.3.493
For biomaterials for skin regeneration with minimized inflammatory response, high bioactivity and biocompatibility are highly required. Also, it should have a porous microstructure to improve cell adhesion and growth. In this study, we extracted a new collagen source from duck's feet which is by-product, and made the shape of sponges from duck's feet collagen (DC) to compare with DBP and SIS. To analyze physical and chemical property of the scaffold, SEM and FTIR were used. MTT assay was used to measure the attachment and proliferation of NIH/3T3 in the scaffolds. RTPCR was used to evaluate the expression of proinflammatory cytokine. Also, 1,1-diphenyl-2-picrylhydrazyl (DPPH) was used to measure the ability of antioxidant activity. Overall, this study shows that DC scaffold is biocompatible and has good physical property. Additionally, DC scaffold shows the potential as wound healing biomaterials.
Characteristics of Heat Curable Polyorganosiloxane Coating Materials
Lee, Jin Hyouk ; Kang, Doo Whan ; Kang, Ho-Jong ;
Polymer Korea, volume 39, issue 3, 2015, Pages 499~505
DOI : 10.7317/pk.2015.39.3.499
Polyorganosiloxane having controlled cross-linking density and phenyl group content were prepared by dimethyldimethoxysilane (DMDMS), methyltrimethoxysilane (MTMS) and phenyltrimethoxysilane (PTMS). The effect of cross-linking density and phenyl group content on the physical properties of siloxane resin and its coated film have been invetigated. Si-NMR results confirmed that synthesized siloxane resins have equivalent D
structures according to applied mole ratios of DMDMS, MTMS and PTMS. Polyorganosiloxane having higher cross-linking density with high phenyl content showed the high molecular weight and increasing phenyl content resulted in higher refractive index as well as better thermal stability. Cross-linking density is more important factor than phenyl content to obtain higher pencil hardness of coated film on the glass. Our results concluded that even polyorganosiloxanes having similar siloxane structures show different physical properties as function of cross-linking density and phenyl content in polyorganosiloxane.
Cure Behavior and Tensile Properties of Ethylidene Norbornene/endo-Dicyclopentadiene Blends
Jung, Jong Ki ; Choi, Jung Hwa ; Yang, Guang ; Park, Jongmoon ; Kim, Donghak ; Kim, Seonggil ; Lee, Jong Keun ; Oh, Myung-Hoon ; Kim, Bongsuk ; Bang, Daesuk ;
Polymer Korea, volume 39, issue 3, 2015, Pages 506~513
DOI : 10.7317/pk.2015.39.3.506
Ethylidene norbornene (ENB) and its blends with endo-dicyclopentadiene (endo-DCPD) were prepared and reacted via the ring-opening metathesis polymerization (ROMP) reaction with the
generation Grubbs' catalysts. Dynamic exothermic behaviors during ROMP and tensile properties after ROMP were evaluated using a differential scanning calorimeter (DSC) and a universal testing machine (UTM) for the samples, respectively. It revealed that the ROMP rate was accelerated with the less contents of endo-DCPD and under the
generation catalyst. Also, the addition of endo-DCPD and the
generation catalyst resulted in higher tensile modulus and strength but lower toughness. Gel fraction measurement and fracture surface observation were made to understand the tensile properties.
Adhesion Properties on the Molecular Weight and Various Substrates of Multi-layered Structural Acrylic Adhesive
Kim, Dong-Bok ;
Polymer Korea, volume 39, issue 3, 2015, Pages 514~521
DOI : 10.7317/pk.2015.39.3.514
In this study, we would like to describe peel strength and dynamic shear property on various substrates of multi-layered structural double-sided adhesive tape with or without adhesive (AD) prepared by UV curing for an automobile, construction, and display junction. According to adapt the adhesive, the peel and dynamic shear strength of adhesion tape prepared with acrylic foam or various plastic substrates increased with increasing molecular weight, however, decreased over 650000 molecular weight. The adhesion property shows high value at the thin AD layer with decreasing temperature. The interface property shows highest at MW 615000 (AD-4), and the interface junction below MW 615000 resulted to divide from acrylic foam and adhesive layer. From this study, the multi-layered structural double-sided adhesive tapes seem to be a useful for industrial area such as a low surface energy plastic material and curved substrate.