Effects of Blend Composition and Crystallization Temperature on Unique Crystalline Morphologies of Miscible Poly(ethylene succinate)/Poly(ethylene oxide) Blends
Effects of Blend Composition and Crystallization Temperature on Unique Crystalline Morphologies of Miscible Poly(ethylene succinate)/Poly(ethylene oxide) Blends
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DOI：
10.1021/ma7020997
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发表时间：
2008
期刊：
影响因子：
5.5
通讯作者：
Jiaoming Lu;Zhaobin Qiu;Wantai Yang
中科院分区：
文献类型：
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作者：
Jiaoming Lu;Zhaobin Qiu;Wantai Yang
在先前的简短交流中，（Macromolecules 2002，35，8251 - 8254），我们报道了二元可混溶结晶聚聚丁二酸乙二酯/聚（环氧乙烷）（PEO）聚合物共混物，其中分别对应于每种组分的两种球晶同时生长，并且PEO球晶在接触时在PES球晶内部继续结晶，形成互穿球晶。采用光学显微镜研究了共混物组成和结晶温度对PES/PEO共混物结晶形态的影响。在较宽的结晶温度范围内，PEO含量为50 ~ 90%的共混物中均观察到PEO球晶穿透PES球晶的独特形态。此外，三个新的和有趣的结晶形态被发现取决于共混物组成和结晶温度。首先，新的边界是由一个单一的PEO球晶本身的增长后，形成…
In a previous short communication (Macromolecules 2002, 35, 8251−8254), we reported a unique morphology in binary miscible crystalline poly(ethylene succinate) (PES)/poly(ethylene oxide) (PEO) polymer blends, in which two kinds of spherulites, corresponding to each component, respectively, grew simultaneously and PEO spherulites continued to crystallize inside PES spherulites on contact, forming interpenetrated spherulites. In the present work the effects of blend composition and crystallization temperature on the crystalline morphologies of PES/PEO blends were studied by optical microscopy in detail. The unique morphology of PES spherulites penetrated by PEO spherulites was observed for the blends with PEO content ranging from 50 to 90% in a wide crystallization temperature range. Furthermore, three novel and interesting crystalline morphologies were found depending on blend composition and crystallization temperature. First, new boundaries were formed by the growth of a single PEO spherulite itself afte...