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首页> 外文期刊>Journal of Applied Polymer Science >SWELLING CHARACTERISTICS OF BLOCK ORDER NETWORKS PREPARED BY STYRENE-ETHYLENE/BUTYLENE ABA TRIBLOCK COPOLYMER AND STYRENE HOMOPOLYMER BINARY BLENDS
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SWELLING CHARACTERISTICS OF BLOCK ORDER NETWORKS PREPARED BY STYRENE-ETHYLENE/BUTYLENE ABA TRIBLOCK COPOLYMER AND STYRENE HOMOPOLYMER BINARY BLENDS

机译：苯乙烯-乙烯/丁苯ABA三嵌段共聚物和苯乙烯均聚物二元共混物制备的嵌段网络的溶胀特性

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Mixed networks based on polystyrene (PS) and styrene-ethylene/butylene triblock copolymer (SEES) binary blends were synthesized via a postpolymerization Friedel-Crafts-type reaction employing styrene units and a bis-chloromethylated crosslinking agent. The swelling behavior of the produced gels was studied in relation to network density, SEBS/PS mass ratio, and solubility parameter of the swelling media, in a range of aliphatic, chlorinated, and aromatic solvents. Swelling characteristics of the mixed macronets were found to differ markedly from those of pure homopolymer gels. Selective swelling was observed in three different regions in respect to the solvent solubility parameter, in contrast to pure PS networks where adsorption was favored in a single region of solvents. This phenomenon was found to depend primarily on the SEBS/PS constitution of gels, while the solvent holding capacity depended directly on the crosslinking density. (C) 1995 John Wiley & Sons, Inc. [References: 22]
机译：基于聚苯乙烯（PS）和苯乙烯-乙烯/丁烯三嵌段共聚物（SEES）二元共混物的混合网络是通过使用苯乙烯单元和双氯甲基化交联剂的后聚合Friedel-Crafts型反应合成的。研究了在各种脂族，氯化和芳族溶剂中，与网络密度，SEBS / PS质量比和溶胀介质的溶解度参数有关的所得凝胶的溶胀行为。发现混合大网的溶胀特性与纯均聚物凝胶的溶胀特性明显不同。与纯PS网络相反，在溶剂的溶解度参数方面，在三个不同的区域观察到选择性溶胀，而纯PS网络则倾向于在单个溶剂区域吸附。发现该现象主要取决于凝胶的SEBS / PS构成，而溶剂保持能力直接取决于交联密度。 （C）1995 John Wiley＆Sons，Inc. [参考：22]

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