Back SearchTitle: SILANE FUNCTIONALIZED ETHYLENE/DIENE COPOLYMER MODIFIERS IN COMPOSITES OF HETEROPHASIC POLYPROPYLENE AND MICROSILICA
Page Range: p.343-355
Author(s): Lipponen S; Pietikainen P; Vainio U; Serimaa R; Seppala J V
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
Ethylene/1,7-octadiene copolymer was polymerised with metallocene catalyst and hydrosilylated to form silane functionalised polyethylenes. This functionalised copolymer was tested for use as a modifier in composites of rubber toughened polypropylene and m
Title: ANTIMICROBIAL PROPERTIES OF ORTHOPAEDIC TEXTILES AFTER IN-SITU DEPOSITION OF SILVER NANOPARTICLES
Page Range: p.357-363
Author(s): Pohle D; Damm C; Neuhof J; Rosch A; Munstedt H
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
The importance of the antimicrobial effect for medical textiles is discussed, especially in applications associated with long term or close contact with human skin. In this article, orthopaedic stockings made from cotton and polyamide were coated with silver nanoparticles by a dip coating process. Both textiles were found to release silver ions over at least 28 days, the release for both fabrics, governed by diffusion. The amount of silver ions released by the cotton textile was higher than by the nylon by about a factor of 4, due to the existence of a larger silver reservoir in the cotton sample. Both fabrics were tested and found to be active against Escherichia coli. 26 refs.
Title: COMPOSITES OF ACRYLONITRILE-BUTADIENE-STYRENE FILLED WITH WOOD-FLOUR
Page Range: p.365-370
Author(s): Matuana L M; Cam S; Yuhasz K B; Armstrong Q J
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
The use of ABS as a plastic matrix for wood flour reinforced composites is investigated in this article, and the results are compared to those of traditionally used polyolefin-wood and PVC-wood composites. Some statistical data are included to indicate th
Title: MORPHOLOGY AND VISCOELASTIC PROPERTIES OF POLY(VINYL CHLORIDE)/POLY(VINYL ALCOHOL) INCOMPATIBLE BLENDS
Page Range: p.371-377
Author(s): Takeuchi K; Kamaguchi A; Nabeta M; Fujii S; Nakamura Y; Iida T
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
PVC/polyvinyl alcohol incompatible blends were investigated with respect to the pre-mixing method used and the degree of saponification of polyvinyl alcohol, on the morphology and viscoelastic properties of the blend. A powder method and an aqueous solution mixing method were both used as methods of controlling the domain size in the incompatible blend by relaxing the strong intramolecular hydrogen boding of PVA and enhancing intermolecular interaction. The effect of the pre-mixing method on the domain size in the PVC/PVA blend was investigated using PVA with different levels of saponification and polymerisation. Furthermore, the effect on the domain size by adding PMMA which has good compatibility with PVC as a third component was investigated. The interaction between the blend components was determined by measuring the viscoelastic properties. 18 refs.
Title: HIGH STRENGTH POLYMER-MODIFIED REPAIR CEMENTITIOUS COMPOSITE FOR FIRE PROTECTION
Page Range: p.379-388
Author(s): Jong-Pil Won; Seok-Won Choi; Chan-Gi Park; Chang-Il Jang
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
Findings are discussed of a series of tests undertaken to determine the mechanical performance and fire resistance of a high strength polymer-modified cementitious composite, and its ability to repair concrete road and railway bridge structures that are i
Title: GELATION CRYSTALLIZATION OF POLY(L-LACTIDE) IN SOLVENTS OF VARYING MOLECULAR SIZE
Page Range: p.389-393
Author(s): Hong Hao; Guozheng Liang; Junmin Zhao
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
The crystallisation behaviour of poly(L-lactide) (PLLA) in large molecule solvents is described. The solvents were polyethylene glycol, dibutyl phthalate, dioctyl phthalate, and paraxylene. The polyethylene glycol solvent had an average molar mass of 400.
Title: GELATIN-G-POLY(SODIUM ACRYLATE-CO-ACRYLAMIDE)/KAOLIN SUPERABSORBENT HYDROGEL COMPOSITES: SYNTHESIS, CHARACTERISATION AND SWELLING BEHAVIOUR
Page Range: p.395-402
Author(s): Marandi G B; Hosseinzadeh H
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
A new gelatin based superabsorbent composite was synthesised by grafting two hydrophilic monomers, namely, acrylic acid and acrylamide onto gelatin in the presence of kaolin particles and crosslinking it. The effect of reaction conditions on the water abs
Title: MECHANICAL PROPERTIES AND MICROSTRUCTURES OF GFRP REBAR AFTER LONG-TERM EXPOSURE TO CHEMICAL ENVIRONMENTS
Page Range: p.403-408
Author(s): Hae-Kyun Park; Su-Jin Lee; Yoon-Jeong Kim; Chang-Il Jang; Jong-Pil Won
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
Accelerated degradation tests were carried out on glass fibre-reinforced polyvinyl ester resin rebar to evaluate its long term durability. The tests used simulated building acid, sulphate and de-icing environments. Tensile strength tests were performed to measure the mechanical properties of the rebar after it was immersed in one of the environments for 50-100 days. The change in the internal pore distribution and in the shape of the rebar surface morphology was also measured. The durability of GRP rebar was not affected to any appreciable degree by exposure to the degradation environments, and consequently could be deemed suitable for use in concrete reinforcement. 19 refs.
Title: ANALYSIS OF MOST PROBABLE MECHANISM FUNCTIONS AND THERMAL DEGRADATION KINETICS OF N-PHENYLMALEIMIDE-STYRENE-MALEIC COPOLYMERS
Page Range: p.409-414
Author(s): Wang Zhai-min; Pi Pi-hui; Wen Xiu-fang; Cheng Jiang; Yang Zhuo-ru
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
The thermal degradation kinetics of N-phenylmaleimide-styrene-maleic anhydride copolymers (NSMA), was analysed by a non-isothermal kinetic method. Kinetic parameters were obtained using integral and differential methods, and the most probable mechanism functions and kinetic compensation effects were discussed. The activation energy for the thermal degradation of NSMA was 211.34kJ/mol according to the Flynn-Wall-Ozawa method, and the thermal degradation was a first-order chemical reaction. A recommended rate expression for the thermal degradation reaction of NSMA, and the mathematical expressions of compensation effects for the integral and differential methods are given. 21 refs.
Title: CHEMICAL CHARACTERIZATION AND WATER ABSORPTION OF ARTEMISIA SEED POLYSACCHARIDE
Page Range: p.415-423
Author(s): Ji Zhang; Yixia Gao; Jian Wu; Yunpu Wang
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Issue Year: ppc
Volume: 15
Issue No: No.5
Abstract
Artemisia seed polysaccharide (ASP) is known to have great potential as a stabilising agent, a water retention agent and a filmogen because of its highly viscous nature and viscosity. According to the authors, however there are no published reports on the