Synchronous Stimuli of Biodegradable Poly(butylene succinate-co-terephthalate) Copolymer Via Uniaxial Stretching at Varying Temperatures
Synchronous Stimuli of Biodegradable Poly(butylene succinate-co-terephthalate) Copolymer Via Uniaxial Stretching at Varying Temperatures
复制标题
通过不同温度下的单轴拉伸对可生物降解的聚（丁二酸-对苯二甲酸丁二醇酯）共聚物进行同步刺激
DOI：
10.1002/polb.23681
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发表时间：
2015-05-01
影响因子：
--
通讯作者：
Yu, Jianyong
中科院分区：
文献类型：
--
作者：
Wei, Zhenzhen;Lin, Jinyou;Yu, Jianyong
清楚地了解聚合物对处理条件的结构响应对于在工业加工（例如纺丝、挤出、注射和吹塑）过程中调节其最终性能至关重要。在这项工作中，我们报告了在不同温度下通过单轴拉伸施加同步刺激后，聚（丁二酸丁二醇酯-共-对苯二甲酸酯）（PBST）共聚物的分级结构的变化。在不同温度下，PBST共聚物在变形的早期均出现层状熔融和晶体结构由型向型的转变。当对刺激产生屈服反应时，板朝向约+/-（40-50）度方向。进一步拉伸后，在高温条件下，定向层片逐渐形成，其形态可通过调节同步刺激来控制。此外，还提出了同步刺激的结构反应示意图。PBST共聚物在这种同步刺激下的结构响应有利于定制纤维、薄膜、塑料等形式的产品的最终性能，这也可以为其他共聚物的设计和开发提供新的见解。(c)2015年威利期刊公司J.波利姆科学，部分B：聚合物2015，53，640-649
Clearly knowing the structural responses of polymers to the treatment conditions is essential to regulate their final properties during industrial processing such as spinning, extrusion, injection, and blow molding. In this work, we reported the changes of hierarchical structure in poly(butylene succinate-co-terephthalate) (PBST) copolymer upon application of synchronous stimuli via uniaxial stretching at varying temperatures. The lamellae melting and the transition of crystal structure from to form in PBST copolymer always presented at the early stage of the deformation at different temperatures. The lamellae oriented to about +/-(40-50)degrees direction as the yielding response to the stimuli. Upon further stretching, the oriented lamellae were freshly and progressively formed at high temperature, whose morphology was controllable by regulating the synchronous stimuli. Furthermore, a schematic for the structural responses to the synchronous stimuli was proposed. The structural responses of PBST copolymer under such synchronous stimuli are beneficial to tailor the final properties of the products in the form of fibers, films, plastics, and so forth, which also can provide new insights into the design and development of other copolymers. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 640-649