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首页> 外文期刊>Journal of Applied Polymer Science >Rheological properties of styrene-co-2-furfuryl methacrylate copolymers
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Rheological properties of styrene-co-2-furfuryl methacrylate copolymers

机译：苯乙烯-甲基丙烯酸-2-糠酯共聚物的流变性能

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The copolymerization of styrene with furfuryl methacrylate (FMA) led to a very significant molecular weight increase and to branching, as measured by standard gel permeation chromatography (GPC) and tri-angle laser light-scattering GPC. This increase was also confirmed by dynamic mechanical spectroscopy. Extensional viscosity analysis showed that styrene-co-2-furfuryl methacrylate copolymers exhibited strain hardening at low strain rates. This strain hardening is explained as a result of the copolymers' polydispersity features rather than a result of their topology. The presence of strain hardening in extensional viscosity experiments is believed to be advantageous in the production of foamed materials with lower densities. A reduction in density was corroborated by foaming experiments on a development extrusion line. The mechanism of density lowering was related more to cell growth than to increased nucleation. (c) 2005 Wiley Periodicals, Inc.
机译：苯乙烯与甲基丙烯酸糠酯（FMA）的共聚导致分子量显着增加和分支，这是通过标准凝胶渗透色谱法（GPC）和三角激光散射GPC测定的。动态机械光谱也证实了这种增加。拉伸粘度分析表明，苯乙烯-甲基丙烯酸-2-糠基酯共聚物在低应变速率下表现出应变硬化。解释这种应变硬化是由于共聚物的多分散性特征而不是其拓扑结构的结果。拉伸粘度实验中应变硬化的存在被认为对生产低密度的泡沫材料是有利的。通过显影挤出生产线上的发泡实验证实了密度的降低。密度降低的机制更多地与细胞生长有关，而不是与成核增加有关。 （c）2005年Wiley Periodicals，Inc.

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