Analysis of Confined Crystalline Behaviors of Poly(styrene)-Poly(ethyleneoxide)-Poly(styrene)Triblock Copolymers by Inverse Gas Chromatography
苯乙烯-氧乙烯-苯乙烯三嵌段聚合物的受限结晶行为的反气相分析

The confined crystalline behaviors of the triblock copolymers, poly(styrene) poly(ethylene oxide) poly(styrene)(PS PEO PS), were studied by using inverse gas chromatography(IGC) probe technique, including phase transformation of melting crystalline, crystallinity( X c), melting temperature( T m) and melting range of temperature The effects of the molecule chain length of linear alkane probes on the results are discussed Results showed that micro phase separation of PS PEO PS had a greater influence on crystallization of PEO molecule chain. Crystalline structure of PS PEO PS had interphase formed by some kinds of imperfect PEO crystal and amorphous PS The molecule chain length of linear alkane probes had no effect on the determination of melting temperature and melting range of temperature of PS PEO PS, but had a greater influence on the determination of crystallinity of PS PEO PS and investigation phase transformation of melting crystalline Crystallinity of PS PEO PS determined by IGC was decreased with the increase of molecule chain length of linear alkane probes By suitable shorter molecule chain length of linear alkane probes, it was truer to reflect the existence of interphase of PS PEO PS and multi phase transformation of melting crystalline presenting in interphase