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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Elastomers and Composites
Journal Basic Information
Journal DOI :
The Rubber Society of Korea
Editor in Chief :
Volume & Issues
Volume 45, Issue 4 - Dec 2010
Volume 45, Issue 3 - Sep 2010
Volume 45, Issue 2 - Jun 2010
Volume 45, Issue 1 - Mar 2010
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Olefinic Thermoplastic Elastomer and Styrenic Thermoplastic Elastomer
Kim, Dong-Hyun ; Kim, Hyun-Joon ; Lee, Bum-Jae ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 152~155
Olefinic thermoplastic elastomer and styrenic thermoplastic elastomer have broad hardness range, high flexibility, low density, and excellent recyclability. But, they are limited in applications due to their low elasticity and low operating temperature. To overcome these problems, olefin/styrene or olefin/
-olefin copolymers have been developed. In this review, we described some examples of olefin/styrene or olefin/
-olefin copolymer and introduced their properties. Although olefin/styrene or olefin/
-olefin copolymer have various weaknesses, they have a great potential in the future.
Synthesis, Properties and Applications of Polyamide Thermoplastic Elastomers
Lee, Kang-Suk ; Choi, Myung-Chan ; Kim, Sung-Man ; Chang, Young-Wook ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 156~164
Thermoplastic elastomers (TPEs) exhibit both elastomeric behaviors at used temperature range and melt processibility. Polyamide based thermoplastic elastomers (TPAEs) are segmented block copolymers with hard blocks consisting of polyamide segments, while the soft blocks usually consist of flexible segments having a low glass transition temperature. The TPAE is one of the engineering TPEs possessing high thermal stability, excellent mechanical performances, chemical resistance and excellent processibility. And they showed wide range of physical and functional properties depending upon the structure of each segment and their relative contents and the hybridization with various inorganic particles. In this review, synthesis, properties, and possible applications of TPAEs are summarized.
Thermo-reversible Crosslinking Elastomer through Supramolecular Networks
Bae, Jong-Woo ; Oh, Sang-Taek ; Kim, Gu-Ni ; Baik, Hyen-Jong ; Kim, Won-Ho ; Choi, Sung-Seen ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 165~169
Recently supramolecular network thermo-reversible crosslinking elastomer having flexibility, various functionality, and advantages of thermoplastic elastomer (TPE) such as recycle and easy processbility is introduced. Although thermo-reversible bonds such as hydrogen bond and ionic cluster is recognized as a common technology since 1990, control technology of bonding and dissociation of crosslink in supramolecular network is a recent technology. In this review, characteristics of thermo-reversible crosslinking elastomer having rheological properties of TPE and reinforcing behaviors of thermoset elastomer are summarized.
Present and Future of Thermoplastic Elastomers As Environmentally Friendly Organic Materials
Choi, Eun-Ji ; Yoon, Ji-Hwan ; Jo, Jung-Kyu ; Shim, Sang-Eun ; Yun, Ju-Ho ; Kim, Il ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 170~187
Much interest on the thermoplastic elastomers (TPEs) has recently been attracted in commercial fields as well as scientific and applied researches. The TPEs have their own characteristic area especially in relation with block copolymers as well as many other polymeric materials, since they show interesting features displayed by the conventional vulcanized rubber, and at the same time, by the thermoplastics. In addition, they are characterized by a set of interesting properties inherent to block and graft copolymers, variety of blends and vulcanized materials. The importance of TPE as organic materials can be evaluated by the number of published reports (papers, patents, technical reports, etc). The input of the concept 'thermoplastic elastomer' to SciFinderScholar yields 18,508 results between 1939 and July 10, 2010, and the number increased exponentially after the mid of 1990. For the suitable introduction of the TPE, historic, scientific, technical and commercial considerations should be taken into account. This review article starts with a brief discussion on historical considerations, followed by a introduction of the main preparations and analytical techniques utilized in chemical, structural, and morphological studies. The properties, processing tools, the position among organic materials, and applications of TPEs are also briefly reviewed. Finally, the most probable trends of their future development are discussed in a short final remarks.
Shape Memory Polymer Nanocomposites
Hong, Jin-Ho ; Yun, Ju-Ho ; Kim, Il ; Shim, Sang-Eun ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 188~198
The term 'shape memory polymers (SMPs)' describes a class of polymers which can remember the original shape and recover from deformed to its original shape by the applied stimuli, e.g., heat, electricity, magnetic field, light, etc. SMPs are classified as one of the 'smart polymers' and have great potentials as high-value-added materials. Especially, low thermal, electrical, and mechanical properties of SMPs can be improved by incorporating the various fillers. This paper aims to review the SMPs and their basic principles, and the trends of the development of SMPs nanocomposites.
The Study on the Development of Environmental-friendly Surface Material Using Condensed Tannin
Jo, Jae-Min ; Park, Moon-Soo ; Chung, Kyung-Ho ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 199~205
Medium-density fiberboard (MDF) is widely used as an indoor building materials. However, formaldehyde resins, commonly used to bind MDF together, emit formaldehyde and other volatile organic compounds that cause health risk at sufficient concentration. In this study, condensed tannin having formaldehyde absorption ability was used to solve the problem of formaldehyde emission generated from surface material. The synthesis of melamine-formaldehyde resin and reaction of melamine-formaldehyde and condensed tannin were analyzed by FT-IR spectrum. Also surface properties, such as shear force, impact strength, tape adhesion, pencil hardness and gloss retention were measured. Free formaldehyde analysis was performed to analyze remaining unreacted formaldehyde. According to the results, the optimum shear force and impact strength could be obtained by 10 wt.% usage of condensed tannin. In cases of pencil hardness and gloss retention, the optimum properties could be obtained at 20 wt.% of condensed tannin. The amounts of formaldehyde emission of surface material containing 20 wt.% of condensed tannin was 59
. The amounts of formaldehyde emission could be reduced 3 times by using 20 wt.% of condensed tannin.
Photocatalytic Degradation of Organic Dyes with Nanomaterials
Hong, Sung-Kyu ; Yu, Gu-Yong ; Lim, Chung-Sun ; Ko, Weon-Bae ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 206~211
Zinc oxide(ZnO) nanoparticles were synthesized by reacting an aqueous-alcoholic zinc nitrate solution to sodium hydroxide under ultrasonic irradiation at room temperature. The fullerene(
) and ZnO nanoparticles were heated individually in an electric furnace for two hours at
. The morphology and optical properties of the
and ZnO nanoparticles were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM) and ultraviolet/visible (UV-vis) spectroscopy. The photocatalytic activity of the heated and unheated the
and ZnO nanoparticles for the decomposition of methylene blue(MB), methyl orange(MO) and rhodamine B(RhB) was examined using UV-vis spectroscopy.
The Study of Characteristics on EPDM, NBR, FKM, VMQ and FVMQ for Sealing Applications to Lithium Ion Battery
Seo, Kwan-Ho ; Cho, Kwang-Soo ; Yun, In-Sub ; Choi, Woo-Hyuk ; Hur, Byung-Ki ; Kang, Dong-Gug ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 212~216
The materials of the lithium ion battery gasket require chemical resistance to the electrolyte, electrical insulating, compression set, anti-contamination and heat resistance. To estimate suitability for rubber which has better performance to compression set than PFA, each compound were made with various rubbers, such as EPDM, NBR, FKM, FVMQ, VMQ and we checked the characteristics of each compound. Samples from each compound was deposited in Propylene Carbonate and tested for changing of Hardness and Volume during 1,000 hr with
. EPDM and VMQ showed good performance to chemical resistance to the electrolyte, and also we could get the values over
on volume resistance basis in electrical insulating. EPDM and VMQ were judged as the most suitable material.
Effects of UV Initiator on Properties of Polymer-Modified Asphalt
Kang, Hyun-Seung ; Hong, Young-Keun ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 217~222
Paved roads are suffered from the permanent plastic deformation in hot summer and cracks in cold winter, which are detrimental to safe driving. This leads to necessity of modification of asphalt to resist those deformation. In this study, two kinds of modifiers were examined; organic polymers and a photoinitiator which is activated by ultraviolet lay. The mechanical and rheololgical properties of modified asphalts were examined using UTM and rheometer. Results showed that the properties were varied depending on the types of polymer and irradiation time. UV irradiation increased the tensile strength and storage modulus of thermoplastic polymer-modified asphalt, however UV was not effective on thermoset polymer. According to long term ultraviolet curing test, properties of the polymer/photoinitiator-modified asphalt did not decrease, but rather increase for 20 years. This indicates that the useful life of the asphalt could be extended by addition of photoinitiator.
Effects of Processing Geometry on the Mechanical Properties and Silica Dispersion of Silica-Filled Isobutylene-Isoprene Rubber (IIR) Compounds
Kim, S.M. ; Cho, H.W. ; Kim, J.W. ; Kim, K.J. ;
Elastomers and Composites, volume 45, issue 3, 2010, Pages 223~229
We investigated the effects of processing geometry of silica-filled isobutylene-isoprene rubber (IIR) compounds on its mechanical properties and silica dispersion, using a two roll mill and an internal mixer (banbury mixer). The compound processed with the two roll mill showed the longer induction time (
), higher maximum torque (
), and better silica dispersion than the compound processed with the internal mixer; however, showed slightly the lower cure index (
). The mechanical properties (hardness, 300% modulus, tensile strength, elongation) of the compound processed with two roll mill were higher than compound done with the internal mixer.