四川大学吴大诚教授、美国马萨诸塞大学徐晓林教授做客第249期化苑讲坛
报告题目：我所见到的高分子科学最伟大的科学家和导师——保罗?弗洛里
报 告 人 ：吴大诚教授
报告时间：2017年4月17日（周一）下午14:30
报告地点：化学楼二楼一号会议室
报告人简介：
吴大诚，教授，四川大学材料学和高分子化学及物理专业的博士生导师、现任成都纺织高等专科学校高新纺织品创新中心首席科学家；他是国家有突出贡献的专家、有突出贡献的回国留学人员、第3-5届国务院学位委员会轻纺学科组成员、经四川省委省政府批准为第1至6批纺织学科学术带头人；他曾任成都科技大学高分子材料系主任、四川大学轻纺学院院长；他还是第7-10届全国政协委员。
他的研究领域十分广泛，涉及高分子物理及化学、液晶、流变学、塑料和化学纤维等若干基础和应用研究；先后承担了几十项科学研究和工程的课题，其中合作的项目“无规聚丙烯填充母料的研究和应用”获1985年国家科技进步二等奖；已在国内外学术期刊和学术会议上发表论文300余篇，其中被SCI和EI收录一百余篇；为研究生开出多门专业课和学位课，着重介绍本学科和相关学科的最新成果和发展前沿；现已培养出博士、硕士毕业生逾百人；出版专著译著二十余部。
报告题目：Development of ultra-high performance materials: Research to
commercial products
报 告 人 ：徐晓林教授
报告时间：2017年4月17日（周一）下午14:30
报告地点：化学楼二楼一号会议室
报告人简介：
Shaw Ling Hsu received his BSc in 1970 from Rutgers University and his PhD in 1975 from University of Michigan. Then, he worked in Allied-Signal Corporation as a research chemist during 1976-1978. In 1978, he joined the Department of Polymer Science and Engineering of University of Massachusetts and has been a full professor since 1987. He was the head of the department during 2003 and 2013. Hsu’s main research interests are the development of environmentally appropriate materials, development of new polymer morphologies for controlled drug delivery, development of multiphase reactive blends, structural characterization of polymer structure in restricted geometry (surfaces/interfaces), deformation behavior of polymers, aging behavior of polymers, residual stress in coatings. He has published over 200 papers including 80+ in Macromolecules. Among the awards and honors Hsu received, he won Phi Beta Kappa, Danforth Foundation Fellow, Sigma Xi Honorary Research Society, National Science Foundation Creativity Award, American Physical Society Fellowship, University of Massachusetts Faculty Fellowship, University Outstanding Faculty Leadership Award, USDA National Panel Manager, Bioenergy Production and Byproducts, Chair of Advanced Materials Platform Panel of Taiwan.
报告内容：
Crosslinked polymers have tremendous number of applications. They are dimensionally and chemically stable under some of the most demanding conditions. Yet our understanding of their formation is quite immature. The merits of crosslinked polymers make them intractable therefore extremely difficult, if not impossible, to characterize. Therefore the understanding of the final crosslinked structures remains qualitative in many aspects, especially in densely crosslinked systems. We undertook a research effort to develop high performance crosslinked materials for a variety of applications from elastomers to rigid cutting tools, with emphasis on the latter. We have developed a number of unconventional spectroscopic techniques (e. g. low field NMR and near infrared) to study this class of polymers. Over the last three years we have gained greater understanding regarding the formation kinetics of the crosslinking process. In addition based on relaxation dynamics developed previously (Bloembergen, Purcell and Pound analysis), it is now possible to assess the crosslink density, segmental dynamics of crosslinked systems, in relation to their macroscopic physical properties. We are also extremely excited that these results have enhanced the development of commercially viable high performance crosslinked systems which are currently being used at elevated temperatures (e. g. cutting tools).
