Miscibility and crystallization of biodegradable poly(butylene succinate-co- butylene adipate)/poly(vinyl phenol) blends
Miscibility and crystallization of biodegradable poly(butylene succinate-co- butylene adipate)/poly(vinyl phenol) blends
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DOI：
10.1016/j.polymer.2009.03.029
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发表时间：
2009-05
期刊：
影响因子：
4.6
通讯作者：
Fang Yang;Zhaobin Qiu;Wantai Yang
中科院分区：
文献类型：
--
作者：
Fang Yang;Zhaobin Qiu;Wantai Yang
本文通过差示扫描量热法、光学显微镜、广角 X 射线衍射和小角 X 射线散射详细研究了可生物降解的聚（丁二酸丁二醇酯 - 己二酸丁二醇酯）（PBSA）/聚（乙烯基苯酚）（PVPh）共混物的混溶性、结晶动力学、晶体结构和微观结构。 PBSA 和 PVPh 是可混溶的，这一点由单一成分相关的玻璃化转变温度和负聚合物-聚合物相互作用参数证明。通过 Avrami 方程研究和分析了 PBSA/PVPh 共混物的等温结晶动力学。 PBSA的总体结晶速率随着结晶温度和PBSA/PVPh共混物中PVPh含量的增加而降低；然而，共混物中 PBSA 的结晶机制并没有改变。此外，与 PVPh 混合不会改变 PBSA 的晶体结构。随着PVPh含量的增加，微观结构参数，包括长周期、结晶相厚度和非晶相厚度均变大，表明PVPh主要存在于共混物中PBSA球晶的层间区域。
Miscibility, crystallization kinetics, crystal structure, and microstructure of biodegradable poly(butylene succinate-co-butylene adipate) (PBSA)/poly(vinyl phenol) (PVPh) blends were studied by differential scanning calorimetry, optical microscopy, wide angle X-ray diffraction, and small angle X-ray scattering in detail in this work. PBSA and PVPh are miscible as evidenced by the single composition dependent glass transition temperature and the negative polymer–polymer interaction parameter. Isothermal crystallization kinetics of PBSA/PVPh blends was investigated and analyzed by the Avrami equation. The overall crystallization rates of PBSA decrease with increasing crystallization temperature and the PVPh content in the PBSA/PVPh blends; however, the crystallization mechanism of PBSA does not change in the blends. Furthermore, blending with PVPh does not modify the crystal structure of PBSA. The microstructural parameters, including the long period, thickness of crystalline phase and thickness of amorphous phase, all become larger with increasing the PVPh content, indicating that PVPh mainly resides in the interlamellar region of PBSA spherulites in the blends.