Preparation of alternating multilayered polyethylene oxide/poly(ε-caprolactone) and the confined crystallization of the composites
Preparation of alternating multilayered polyethylene oxide/poly(ε-caprolactone) and the confined crystallization of the composites
复制标题
交替多层聚环氧乙烷/聚己内酯的制备及其复合材料的限域结晶
DOI：
10.1039/c5ra20053a
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发表时间：
2015-11
期刊：
影响因子：
--
通讯作者：
Shaoyun Guo
中科院分区：
文献类型：
--
作者：
Hong Wu;Jiang Li;Rong Chen;Shaoyun Guo
本文将聚环氧乙烷（PEO）和聚e-己内酯（PCL）共挤压形成不同层数的交替多层结构。在膜厚一定的情况下，随着层数的增加，膜层越薄，界面越多。随着层数的增加，这两种聚合物的结晶行为发生了明显的变化。对于PEO的结晶，熔融PCL层促进了PEO的结晶速率，而层厚的空间限制显著抑制了较高层数下PEO的结晶速率。在PCL层中，由于PCL的晶体尺寸较小，空间约束对PCL结晶的影响可以忽略不计，而PEO与PCL层之间的界面相互作用抑制了PCL在层界面处的结晶速率。同时，当层数从2层增加到128层时，PEO的结晶度（Xc）从70.2%下降到40.0%，而PCL的Xc变化不大。
In this paper, polyethylene oxide (PEO) and poly(e-caprolactone) (PCL) were co-extruded to form alternating multilayered structures with different layer numbers. For a given film thickness, the layers were thinner as the layer numbers became higher, and more interfaces were observed. The crystallization behaviors of these two polymers varied distinguishably as the layer number became higher. For the crystallization of PEO, the molten PCL layers promoted the crystallization rate of PEO, while the spatial confinement of the layer thickness significantly suppressed the crystallization rate of PEO at higher layer numbers. In the case of PCL layers, the effect of spatial confinement on the crystallization of PCL was negligible due to the small crystal size of PCL, while the interfacial interaction between PEO and PCL layers suppressed the crystallization rate of PCL at the layer interfaces. Meanwhile, the degree of crystallinity (Xc) of PEO decreased from 70.2% to 40.0% when the layer number increased from 2 to 128, while the Xc of PCL did not vary much.
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影响因子：
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作者：
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影响因子：
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