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材料科学与化学工程学院学术报告——Rheo-Optical Study of the Effect of Ultra-High Molecular Weight Chain on Flow-Induced Crystallization of Polyethylene

发布日期:2018-09-10 作者:材料科学与化学工程学院


报告时间913日(星期四)下午14:30

报告地点:龙赛理科南楼210

报告人简介沈博 博士,博士毕业于中科院化学所,师从韩志超教授,目前在Kornfield教授课题组开展博士后研究工作。

报告摘要 We investigated the flow behavior of a series of polyethylene blends with different concentrations of ultra-high molecular weight chains using birefringence and rheology measurements. We found that even with same birefringence during the shear flow, which means the same average chain orientation, the later birefringence response is different. Under the same first step point-nuclei formation, high molecular weight chain has evolved into the second step the shish formation.