国内精品国产三级国产在线专_欧美日韩在线播放一区二区_成人xxxx视频_欧美激情视频一区_色女人综合av_久久久亚洲影院_久久久久久九九_成人免费网站在线_日韩美女毛茸茸_狠狠干一区二区

Current Location ：> Home > News > Text
Dr. Yaqiong Zhang''''''''s paper appears in J Phys Chem B, No. 138 paper of our group (J. Phys. Chem. B, 2014, 118 (30), pp 9112–9117)

Dr. Yaqiong Zhang''''s paper appears in J Phys Chem B, No. 138 paper of our group (J. Phys. Chem. B, 2014, 118 (30), pp 9112–9117)


Congrats!



Speeding of Spherulitic Growth Rate at the Late Stage of Isothermal Crystallization Due to Interfacial Diffusion for Double-Layer Semicrystalline Polymer Films


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
J. Phys. Chem. B, 2014, 118 (30), pp 9112–9117
DOI: 10.1021/jp506044y
Publication Date (Web): July 23, 2014
Copyright © 2014 American Chemical Society
*Phone: +86 0551-63607703. Fax: +86 0551-63607703. E-mail: [email protected].



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.