223 Result(s)
within
English
Biomaterials
Yi**g Yong
Article
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Article
Anticoagulation Activity of the Modified Poly(vinyl alcohol)
Cross-linked blendmers of the poly(vinyl alcohol) (PVA) with substituted anion have been prepared. Possibilities of the samples for the usage as biomaterial were estimated by measuring the tensile strength and...
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Dialysis Performance of the Modified Poly(vinyl alcohol) Membranes
Based on the anionic groups which appear in heparin, sulfonated poly(vinyl alcohol) (S-PVA), and carboxymethylated poly(vinyl alcohol) (C-PVA) were synthesized. Cross-linked blendmer (XSC-PVA)s were obtained b...
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Article
Synthesis and Blood-Compatibility of Poly(ethylene-g-γ-benzyl-L-glutamate)
A novel graft copolymer consisting of commercial chlorosulfonated polyethylene and γ-benzyl-L-glutamate was synthesized. The graft yield was over 70% at a mild reaction condition while we did not observe any cros...
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Compatibilizing Effect of Phenoxy on Immiscible Poly(butylene terephthalate)/Poly(methyl methacrylate) Blends
The compatibilizing effect of poly(hydroxy ether of Bisphenol A) (Phenoxy) on the immiscible poly(butylene terephthalate) (PBT)/poly(methyl methacrylate) (PMMA) blends was examined by differential scanning cal...
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Characterization of Copoly(p-hydroxybenzoate/bisphenol A terephthalate) by NMR Spectroscopy
Copoly(p-hydroxybenzoate/bisphenol A terephthalate) is a new type of wholly aromatic copolyester which has an obvious character of the thermotropic liquid crystal. In this paper, we characterized the copolyester ...
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Theoretical and Experimental Analysis of Polymer Molecular Weight and Temperature Effects on the Dissolution Process of Polystyrene in Ethylbenzene
The effects of temperature and molecular weight on the polymer dissolution rate were investigated by comparison of the numerical simulation with the experimental observations. The Fickian diffusion equation wa...
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Effects of Mechanical Deformation on Endothermic Peaks in Aged Amorphous Poly(ethylene terephthalate)
The effect of mechanical deformation on endothermic peaks of aged amorphous Poly(ethylene terephthalate) (PET) films were studied using differential scanning calorimetry (DSC). Three deformation methods, uniax...
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Synthesis and Second-Order Nonlinear Optical Properties of Tricyanovinylated Polybenzoxazole
We have developed the second-order nonlinear optically (NLO) active polybenzoxazole as a new thermally stable NLO polymeric system. This polybenzoxazole was synthesized by direct polycondensation of diacid mon...
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Thermal, Crystallization, and Biodegradation Behavior of Poly(3-hydroxybutyrate) Blends with Poly(butylene succinate-co-butylene adipate) and Poly(butylene succinate-co-ε-caprolactone)
Morphologies, some physical properties, and biodegradability were investigated for the binary blends of natural poly(3-hydroxybutyrate) [P(3HB)] with chemosynthetic poly(butylene succinate-co-butylene adipate) (P...
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Article
Alteration of the Solubility of 4,4′-Hexafluoroisopropylidene Diphtalic Anhydride-4,4-Oxydianline Polyimide by Experimental and Theoretical Methods
Alteration of the solubility of 4,4′-Hexafluoroisopropylidene diphtalic anhydride-4,4-oxydianline polyimide was investigated through experimental (the solubility experiments and equilibrium swelling) and theor...
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Article
Electrorheological Performance of Chitosan Phosphate Suspension
The electrorheological (ER) performance of chitosan phosphate suspension in silicone oil was investigated. Chitosan phosphate suspension showed a typical ER response (Bingham flow behavior) and exhibited an ex...
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Calorimetric and Infrared Spectroscopic Analysis of Multiple Melting Endotherms of Poly(ethylene terephthalate)
Multiple melting endotherms of poly(ethylene terephthalate) (PET) were investigated with differential scanning calorimetry (DSC), Fourier transition infrared spectroscopy (FT-IR) and temperature modulated DSC ...
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Article
Infrared Spectroscopic and Modulated Differential Scanning Calorimetric Study of Physical Aging in Bisphenol A Polycarbonate
FT-IR spectroscopy was used to examine conformational changes in the quenched Bisphenol A Polycarbonate (BPAPC) films during physical aging. It was observed that the amount of energy favored trans-trans conformer...
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Article
Effects of Anion and Solvent on Properties of Alternating Ethylene/CO Copolymer Catalyzed by the Pd(II) Complex
Alternating copolymerization of ethylene and carbon monoxide was carried out using (dppp)Pd(OAc)2/anion complexes (dppp=1,3-bis(diphenylphosphino)propane) with various anions and solvents. Catalytic activity in a...
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Article
Study on Thermal and Mechanical Properties of Biodegradable Blends of Poly(ε-caprolactone) and Lignin
The phase structure and physical property were investigated for blends of poly(ε-caprolactone) (PCL) and lignin, both of which were biodegradable polymers. The blend was prepared by mechanical mixing and solut...
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Preparation and Properties of Poly(urethane-benzoxazine)s Based on Monofunctional Benzoxazine Monomer
Poly(urethane-benzoxazine) films were prepared by blending a monofunctional benzoxazine monomer, 3-phenyl-3,4-dihydro-2H-1,3-benzoxazine (Pa), and polyurethane (PU) prepolymer that was synthesized from 2,4-tol...
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Synthesis and Characterization of a Photo-Crosslinkable Side-Chain Liquid-Crystalline Polymer
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The Hydrogen-Bonding Interactions between 4,4’-Thiodiphenol and Some Poly(hydroxyalkanoic acid)s Revealed by DSC and FT-IR Spectroscopic Analysis
The specific intermolecular hydrogen-bonding interaction between some poly(hydroxyalkanoic acid)s (PHAs) and 4,4’-thiodiphenol (TDP) were studied by DSC and FT-IR. Chemosynthetic poly(3-hydroxypropionate), bac...
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The Effect of Crystallization on the Thinning-Thickening Phenomena of Plastic Blend Film in Water Media
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Thermal and Infrared Spectroscopic Studies on Hydrogen-Bonding Interaction between Poly(3-hydroxybutyrate) and Catechin
The effects of catechin on the properties of bacterially synthesized isotactic poly[(R)-3-hydroxybutyrate] (i-PHB) and chemosynthesized highly-syndiotactic poly[(R,S)-3-hydroxybutyrate] (s-PHB) were investigated ...
