• Title, Summary, Keyword: functional property

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Analysis of Physical Properties and Water Repellency Property in Functional Packaging Paper (기능성 포장원지의 물성변화 및 내수성 분석)

  • Kim, Chul-Hwan;Cho, Sung-Hwan
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.13 no.3_4
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    • pp.89-95
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    • 2007
  • Functional packaging paper containing botanical antimicrobial agent (BAAG) and inorganic zeolite was developed for antimicrobial activity and adsorption of ethylene gas of the paper. The physical properties of the packaging paper showed different characteristics with addition of BAAG and functional fillers: both tensile strength and burst strength were decreased, but both stiffness and tear strength were slightly increased. Zeolite also contributed to fast removal of ethylene gas known as aging hormone of fruits and vegetables. Alkyl ketene dimer (AKD) was greatly effective to endow the packaging paper with water repellency property.

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Functional and Film-forming Properties of Fractionated Barley Proteins

  • Cho, Seung-Yong;Rhee, Chul
    • Food Science and Biotechnology
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    • v.18 no.4
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    • pp.889-894
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    • 2009
  • Barley proteins are expected to have unique functional properties due to their high content of alcohol soluble protein, hordein. Since the barley proteins obtained by conventional isoelectric precipitation method cannot represent hordein fraction, barley proteins were fractionated to albumin, globulin, glutelin, and hordein with respect to extraction solvents. Functional properties and film-forming properties of solubility-fractionated barley proteins were investigated to explore their potential for human food ingredient and industrial usage. The 100 g of total barley protein comprised 5 g albumin, 23 g globulin, 45 g glutelin, and 27 g hordein. Water-binding capacities of barley protein isolates ranged from 140-183 mL water/100 g solid. Hordein showed the highest oil absorption capacity (136 mL oil/100 g), and glutelin showed the highest gelation property among the fractionated proteins. In general, the barley protein fractions formed brittle and weak films as indicated by low tensile strength (TS) and percent elongation at break (E) values. The salt-soluble globulin fraction produced film with the lowest TS value. Although films made from glutelin and hordein were dark-colored and had lower E values, they could be used as excellent barriers against water transmission.

SOME NEW APPLICATIONS OF S-METRIC SPACES BY WEAKLY COMPATIBLE PAIRS WITH A LIMIT PROPERTY

  • Afra, J. Mojaradi;Sabbaghan, M.
    • The Pure and Applied Mathematics
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    • v.28 no.1
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    • pp.1-13
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    • 2021
  • In this note we use a generalization of coincidence point(a property which was defined by [1] in symmetric spaces) to prove common fixed point theorem on S-metric spaces for weakly compatible maps. Also the results are used to achieve the solution of an integral equation and the bounded solution of a functional equation in dynamic programming.

Research on the dyeability and functional property of citrus peel extract as a natural dye (감귤박 추출액을 이용한 천연염료로의 염색성 및 기능성 평가에 관한 연구)

  • Kim, Kihoon;Kim, Haegong;Lim, Hyuna
    • The Research Journal of the Costume Culture
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    • v.22 no.3
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    • pp.431-439
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    • 2014
  • This research verified the usefulness and practicality of citrus peel extract as a natural dye. This study dyed cotton, silk, and cotton/mulberry fiber blended fabrics using citrus peel extract, and measured the dyeability and functional property to verify their usefulness and practicality. The dyeing affinity of the citrus peel extract was measured by dyeing under alkaline conditions to determine the temperature and time for optimal dyeing conditions of the solution. The results show that a temperature and time of $60^{\circ}C$ and 30 minutes were optimal for dyeing cotton fabrics with citrus peel extract, $50^{\circ}C$ and 60 minutes for silk fabrics, and $60^{\circ}C$ and 60 minutes for cotton/mulberry fiber blended fabrics, respectively. In addition the results of measuring the color fastness of the cotton, silk, and cotton/mulberry fiber blended fabrics dyed with the citrus peel extract show that the color fastness was superior for washing, friction, sweat, and water. However, the color fastness for sunlight appeared to be slightly weak. In addition, it was found that fabric dyed with the citrus peel extract showed partial antimicrobial properties. The antimicrobial property appeared the greatest in the silk fabric. The cotton/mulberry fiber blended fabrics had 90% or more Staphylococcus aureus present, but the antimicrobial properties were not high in the cotton fabric. Additionally, the heavy metal content, which is harmful to the human body, appeared to be lower than standard figures, so the dye was found to be innocuous to humans. Therefore, when the results of this study are put together, citrus peel extract is sufficiently useful and practical as an ingredient for a natural dye. Moreover, there is ample possibility to develop citrus peel dyed fabrics as environmentally friendly fashion materials.

Study on Thermodynamics of Three Kinds of Benzindocarbocyanine Dyes in Aqueous Methanol Solution

  • Huang, Wei;Wang, Lan-Ying;Fu, Yi-Le;Liu, Ji-Quan;Tao, You-Ni;Fan, Fang-Li;Zhai, Gao-Hong;Wen, Zhen-Yi
    • Bulletin of the Korean Chemical Society
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    • v.30 no.3
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    • pp.556-560
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    • 2009
  • Aggregation behavior of three kinds of benzindocarbocyanine dyes in aqueous methanol solution was studied by UV-Vis absorption spectrum. The results indicated that the three dyes all existed monomer-dimer equilibrium in aqueous methanol solution (concentration range $10^{−5}\;to\;10^{−6}$ M) at 25.0$\sim$41.0 ${^{\circ}C}$ for Dye 1, 28.0$\sim$49.0 ${^{\circ}C}$ for Dye 2 and 26.0$\sim$47.0 ${^{\circ}C}$ for Dye 3. The fundamental property of the three dyes as the dimeric association constant KD, the dimeric free energy ${\Delta$}G_D, the dimeric entropy ${\Delta$}S_D, and the dimeric enthalpy ${\Delta$}H_D were determined. The ${\Delta$}H_D of three dyes: Dye 1, Dye 2 and Dye 3 was -42.5, -15.1 and -18.9 kJ/mol, respectively. The experimental observations were the subject of a theoretical study including the ground-state geometries which were fully optimized using DFT at B3LYP/6-31G level. The effect of dye molecule structure on ${\Delta$}H_D was discussed by theoretical calculations.

CONVERGENCE PROPERTIES OF PREDATOR-PREY SYSTEMS WITH FUNCTIONAL RESPONSE

  • Shim, Seong-A
    • Honam Mathematical Journal
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    • v.30 no.3
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    • pp.411-423
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    • 2008
  • In the field of population dynamics and chemical reaction the possibility or the existence of spatially and temporally nonhomogeneous solutions is a very important problem. For last 50 years or so there have been many results on the pattern formation of chemical reaction systems studying reaction systems with or without diffusions to explain instabilities and nonhomogeneous states arising in biological situations. In this paper we study time-dependent properties of a predator-prey system with functional response and give sufficient conditions that guarantee the existence of stable limit cycles.

Improvement of mechanical properties of interior fabric using soluble micro-fiber and low melting PET (용출형 극세사와 저온 융착사를 이용한 인테리어 직물의 기계적 물성 개선)

  • Kwon, Yoon-Jung;Ahn, Young-Moo
    • Journal of Fashion Business
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    • v.13 no.1
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    • pp.82-90
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    • 2009
  • This research was made to manufacture the fabric for interior uses by spinning a low melting mono 4 denier PET staple fiber with a soluble 1.4 denier fine PET fiber. The blended yarn has a thickness ranging from 10's to 14's, and the soluble PET fine fiber was dissolved to make a pore in the polymer. Thereby a snap property was decreased and a resilience property was improved to be suitable for a functional synthetic leather. In order to attain the optimum condition, a mechanical property according to fineness, and mixing ratio of low melting polymer, warp density, weft density and blending ratio, and a heat contraction ratio according to blending ratio were experimented. The warp density, 220 T/inch of fine denier PET and the weft density, 64 T/inch of thick denier PET were generated to 4/4 both twill weave fabric having constant tensile property and thickness.

Ion Exchange Property of the Synthesized Ion Exchange Resins

  • Lee, Dong-Hwan;Lee, Yong-Hee;Lee, Kook-Eui;Lee, Min-Gyu;Suh, Jung-Ho
    • Proceedings of the Korean Environmental Health Society Conference
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    • pp.155-159
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    • 2004
  • We synthesized ion exchange resin that can remove $NO_3\;^-$ selectively rather than $SO_4\;^{2-}$. Ion exchange property of the synthesized ion exchange resin occurred like the following process, $NO_3\;^-$ > $SO_4\;^{2-}$, the efficiency of functional group to remove $NO_3\;^-$ occurred in the process of $NPr_3$ > $NBu_3$ > $NEt_3$ > $NMe_3$ > $NPe_3$ > $N(EtOH)_3$, and the efficiency of functional group to remove $SO_4\;^{2-}$ occurred in the process of $NMe_3$ > $NEt_3$ > $NPr_3$ > $NBu_3$ > $NPe_3$.

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Interactions of Membrane and PMAP-23 Studied by $^{31}P$ solid-state NMR Spectroscopy

  • Kim, Si-Won;Kim, Suhk-Mann
    • Journal of the Korean Magnetic Resonance Society
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    • v.11 no.2
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    • pp.110-114
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    • 2007
  • [ $^{31}P$ ] powder pattern spectra were measured to investigate the aspects of the interaction between the MLV (Multilamellar vesicle) and PMAP-23, a membrane of cathelicidin family and then CSAs(chemical shift anisotropy) were calculated to indentify the extent of perturbation of phospholipid mobility by the peptides. We found that acidic phospholipid interacts strongly with PMAP-23, and the analogues which modified to increase the amphipathic property showed that larger change of CSA. The analogue which introduced positive charge showed the same effects with amphipathic property.

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