Enhancing the Compatibility of Poly (1,4-butylene adipate) and Phenoxy Resin in Blends.
Enhancing the Compatibility of Poly (1,4-butylene adipate) and Phenoxy Resin in Blends.
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DOI：
10.3390/ma10070692
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发表时间：
2017-06-23
期刊：
影响因子：
--
通讯作者：
Su CC
中科院分区：
文献类型：
--
作者：
Yang CF;Wang HC;Su CC
这项工作涉及通过醇解交换增强聚（1,4-己二酸丁二醇酯）（PBA）与聚（双酚A羟基醚）（苯氧基）共混物的相容性。热行为和形貌结果表明，共混 PBA/苯氧基体系表现出均质相和与组成相关的玻璃化转变温度 (Tg)。使用熔点降低法计算PBA/苯氧基共混物的相互作用参数(χ12)，结果为-0.336。然而，PBA/苯氧基共混物的相容性可以通过退火时 PBA 和苯氧基之间的化学交换反应来增强。研究发现，退火后的 PBA/苯氧基共混物具有比共混样品更高的 Tg 的均质相，以及可通过高温退火改善的光滑表面形貌。这项研究的结果表明，PBA/苯氧基共混物中的促进相容性只能在热退火时获得，从而导致苯氧基的悬挂-OH与PBA中的酯官能团之间发生反式反应。广泛的反式反应导致PBA和苯氧基之间发生醇解交换，形成网络，从而降低聚合物链的流动性。最后，随着共混物中反式反应程度的增加，PBA 的结晶度降低。
This work concerns the enhancement in the compatibility of blends of poly (1,4-butylene adipate) (PBA) with poly (hydroxy ether of bisphenol-A) (phenoxy) via alcoholytic exchange. Results on the thermal behavior and morphology show that the blended PBA/phenoxy system exhibits a homogeneous phase and a composition-dependent glass transition temperature (Tg). The interaction parameter (χ12) of PBA/phenoxy blends was calculated using the melting point depression method and was found to be −0.336. However, the compatibilization of PBA/phenoxy blends can be enhanced by chemical exchange reactions between PBA and phenoxy upon annealing. Annealed PBA/phenoxy blends were found to have a homogeneous phase with a higher Tg than that of the blended samples, and a smooth surface topography that could be improved by annealing at high temperature. The results of this investigation demonstrate that promotional phase compatibilization in the PBA/phenoxy blend can only be obtained upon thermal annealing, thus causing transreactions to occur between the dangling –OH of the phenoxy and the ester functional groups in PBA. Extensive transreactions cause alcoholytic exchange between the PBA and phenoxy to form a network, thus reducing the mobility of the polymer chain. Finally, the crystallinity of PBA decreased as the degree of transreaction in the blends increased.
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影响因子：
3
作者：
HARRIS, JE;GOH, SH;BARLOW, JW
通讯作者：
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影响因子：
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