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首页> 外文期刊>Journal of Applied Polymer Science >New soybean oil-styrene-divinylbenzene thermosetting copolymers. v. shape memory effect
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New soybean oil-styrene-divinylbenzene thermosetting copolymers. v. shape memory effect

机译：新型大豆油-苯乙烯-二乙烯基苯热固性共聚物。 v。形状记忆效应

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A series of new shape memory polymers are synthesized by the cationic copolymerization of regular soybean oil, low saturation soybean oil (LoSatSoy oil), and/or conjugated LoSatSoy oil with styrene and divinylbenzene, norbornadiene, or dicyclopentadiene initiated by boron trifluoride diethyl etherate or related modified initiators. The shape memory properties of the soybean oil polymers are characterized by the deformability (D) of the materials at temperatures higher than their glass-transition temperatures (T-g), the degree to which the deformation is subsequently fixed at ambient temperature (FD), and the final shape recovery (R) upon being reheated. It is found that a T-g well above ambient temperature and a stable crosslinked network are two prerequisites for these soybean oil polymers to exhibit shape memory effects. Good shape memory materials with high D, FD, and R values are prepared by controlling the crosslink densities and the rigidity of the polymer backbones. The advantage of the soybean oil polymers lies in the high degree of chemical control over the shape memory characteristics. This makes these materials particularly promising in applications where shape memory properties are desirable. (C) 2002 Wiley Periodicals, Inc. [References: 24]
机译：三氟硼酸二乙基醚化物或相关物质引发的常规大豆油，低饱和大豆油（LoSatSoy油）和/或共轭LoSatSoy油与苯乙烯和二乙烯基苯，降冰片二烯或二环戊二烯的阳离子共聚反应，合成了一系列新型形状记忆聚合物。修改后的启动器。大豆油聚合物的形状记忆特性的特征在于材料在高于其玻璃化转变温度（Tg）的温度下的变形性（D），随后在环境温度（FD）下固定的变形程度和重新加热后的最终形状恢复（R）。发现远高于环境温度的T-g和稳定的交联网络是这些大豆油聚合物表现出形状记忆效应的两个先决条件。通过控制聚合物骨架的交联密度和刚度，可以制备出具有高D，FD和R值的良好形状记忆材料。大豆油聚合物的优点在于对形状记忆特性的高度化学控制。这使得这些材料在需要形状记忆性能的应用中特别有前途。 （C）2002 Wiley Periodicals，Inc. [参考：24]

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