四川大學吳大誠教授、美國馬薩諸塞大學徐曉林教授做客第249期化苑講壇
報告題目：我所見到的高分子科學最偉大的科學家和導師——保羅?弗洛里
報 告 人 ：吳大誠教授
報告時間：2017年4月17日（周一）下午14:30
報告地點：化學樓二樓一號會議室
報告人簡介：
吳大誠，教授，四川大學材料學和高分子化學及物理專業(yè)的博士生導師、現(xiàn)任成都紡織高等專科學校高新紡織品創(chuàng)新中心首席科學家；他是國家有突出貢獻的專家、有突出貢獻的回國留學人員、第3-5屆國務院學位委員會輕紡學科組成員、經(jīng)四川省委省政府批準為第1至6批紡織學科學術帶頭人；他曾任成都科技大學高分子材料系主任、四川大學輕紡學院院長；他還是第7-10屆全國政協(xié)委員。
他的研究領域十分廣泛，涉及高分子物理及化學、液晶、流變學、塑料和化學纖維等若干基礎和應用研究；先后承擔了幾十項科學研究和工程的課題，其中合作的項目“無規(guī)聚丙烯填充母料的研究和應用”獲1985年國家科技進步二等獎；已在國內外學術期刊和學術會議上發(fā)表論文300余篇，其中被SCI和EI收錄一百余篇；為研究生開出多門專業(yè)課和學位課，著重介紹本學科和相關學科的最新成果和發(fā)展前沿；現(xiàn)已培養(yǎng)出博士、碩士畢業(yè)生逾百人；出版專著譯著二十余部。
報告題目：Development of ultra-high performance materials: Research to
commercial products
報 告 人 ：徐曉林教授
報告時間：2017年4月17日（周一）下午14:30
報告地點：化學樓二樓一號會議室
報告人簡介：
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.
報告內容：
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).
