title: Speeding of spherulitic growth rate at the late stage of isothermal crystallization due to interfacial diffusion for double-layer semicrystalline polymer films.
abstract: In this study a unique phenomenon has been found for isothermal crystallization of double-layer semicrystalline polymer films. It is surprisingly found that there exists a speeding of poly(l-lactic acid) (PLA) spherulitic growth rate for poly(ethylene oxide)/poly(l-lactic acid) (PEO/PLA) double-layer films at the late stage of isothermal crystallization, which does not exist for PLA/PEO blend films and neat PLA films. The mutual diffusion between PEO and PLA layers plays the key factor to bring out the observed speeding of spherulitic growth rate. This type of study provides an avenue for understanding the interplay between polymer crystallization and interfacial diffusion in multilayer polymer films, which is not available when employing the polymer blend films.
authors: CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, Anhui Province 230026, P. R. China.
authors: Yaqiong
authors: Y
authors: Zhang
authors: Feng
authors: F
authors: Jiang
authors: Wentao
authors: W
authors: Wang
authors: Zhigang
authors: Z
authors: Wang