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首页> 外文期刊>Journal of Applied Polymer Science >Comparison of viscoelastic properties of polydimethylsiloxane/poly(2-hydroxyethyl methacrylate) IPNs with their physical blends
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Comparison of viscoelastic properties of polydimethylsiloxane/poly(2-hydroxyethyl methacrylate) IPNs with their physical blends

机译：聚二甲基硅氧烷/聚（甲基丙烯酸2-羟乙酯）IPN及其物理共混物的粘弹性能比较

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摘要

Interpenetrating polymer networks (IPNs) of polydimethylsiloxane (PDMS) and poly(2-hydroxyethyl methacrylate) (PHEMA) were prepared by sequential method. The dynamic mechanical parameters of obtained IPNs and their variations with the structural composition were evaluated. The results for the IPNs were compared with corresponding physically blended systems. The tensile properties and damping factor (tan delta) were assessed by stress-strain measurement and dynamic mechanical thermal analysis (DMTA), respectively. The glass-rubber transition temperature (T-g) was assessed by DMTA and differential scanning calorimetry (DSC). The results showed higher tensile strength and elongation at break for IPNs than those for physical blends. The shifts of T-g for that two components that make up the IPNs were greater than those for corresponding blends. (C) 2002 Wiley Periodicals, Inc. [References: 43]
机译：通过顺序法制备了聚二甲基硅氧烷（PDMS）和聚（甲基丙烯酸2-羟乙酯）（PHEMA）的互穿聚合物网络（IPN）。评估了获得的IPN的动态力学参数及其随结构组成的变化。 IPN的结果与相应的物理混合系统进行了比较。拉伸性能和阻尼系数（tanδ）分别通过应力应变测量和动态机械热分析（DMTA）进行评估。通过DMTA和差示扫描量热法（DSC）评估玻璃-橡胶转变温度（T-g）。结果表明，与物理共混物相比，IPN的拉伸强度和断裂伸长率更高。组成IPN的两个组分的T-g位移大于相应混合物的T-g位移。 （C）2002 Wiley Periodicals，Inc. [参考：43]

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