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超支化聚苯硫醚的合成和应用 被引量:6

Synthesis and Application of Hyperbranched PPS
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摘要 合成了3,4-二氯苯磺酰氯,用锌粉还原得到超支化聚苯硫醚(PPS)的单体——3,4-二氯硫酚,并用其制备了超支化PPS。红外光谱显示其与线型高分子量PPS相比结构有很大不同。对超支化PPS/PPS复合纤维的研究表明,适量增加超支化PPS能提高PPS的结晶度,超支化PPS/PPS复合纤维的拉伸强度也随之提高,另一方面超支化PPS可以起到类似增塑剂的作用,提高了PPS的韧性,从而达到提高力学性能的目的。扫描电镜结果显示,添加超支化PPS有利于形成力学性能提高的界面结构。 3, 4-dichlorobenzenethiol was synthesized by reduction of 3, 4-dichlorobenzenesulfonyl chloride with the reducing agent— zinc powder. Polymerization of 3, 4-dichlorobenzenethiol was accomplished to obtain hyperbranched poly (phenylene sulfide), whose structure was completely different from linear PPS via FT-IR. Investigation of hyperbranched PPS/PPS composite fiber shows that proper amount of hyperbranched PPS can increase the erystallinity of linear PPS; therefore tensile strength increases. In addition, hyperbranched PPS performed as plasticizer to enhance the toughness. SEM observation indicated that strengthened interface structure tends to form after addition hyperbranched PPS
出处 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2008年第3期122-124,128,共4页 Polymer Materials Science & Engineering
关键词 超支化聚苯硫醚 聚苯硫醚 合成 力学性能 hyperbranched PPS poly(phenylene sulfide) synthesis mechanical properties
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