甲壳型液晶高分子/十八胺浓溶液的自组装行为研究
首发时间:2016-06-01
摘要:本文以甲壳型液晶高分子聚2,5-二[(4-十八烷氧基)苯氧羰基]苯乙烯(P-OC18)为溶质,十八胺(Aim)为溶剂,制备出一系列不同浓度的甲壳型液晶高分子浓溶液P-OC18(Ami)x,其中x代表十八胺的质量百分数。通过DSC、POM和1D WAXD等测试,详细探索溶剂分子对甲壳型液晶高分子浓溶液自组装行为的影响。研究结果表明,P-OC18(Ami)x的自组装行为强烈依赖于十八胺的质量浓度:在5 ≤ x ≤ 95的范围内,随着x的减小,P-OC18(Ami)x依次呈现五种不同类型的相行为。此外,当P-OC18(Ami)x形成六方柱状相时,随着x的增加,柱子直径相应的增大。
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Self-Assembly Behaviors of Mesogen-Jacketed Liquid Crystalline Polymer Dissolved in Stearamine
Abstract:Solutions of Poly-{2,5-bis[(4-octadecyloxyphenyl)oxycarbonyl]styrene} (P-OC18) dispersed into stearamine (Ami) with different mass concentration were prepared [P-OC18(Ami)x, x is the weight fraction of stearamine]. The self-assembly behavior of P-OC18(Ami)x was detected by the combination method of DSC, POM and 1D WAXD. The experiment results showed that the self-assebmly behaviors of P-OC18(Ami)x was closely related to the weight fraction of stearamine. In the range of 5 ≤ x ≤ 95, with the decrease of x, solutions exhibited five different types of phase transition behaviors. Moreover, when P-OC18(Ami)x formed hexagonal columnar phase, the columnar diameter increased with the increasing x.
Keywords: mesogen-jacketed liquid crystalline polymers (MJLCPs) concentrated polymer solutions self-assembly phase behavior
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