programonconferenceforthecelebrationof50yearsofpolymereducationandresearchatpekinguniversity(编辑修改稿)

programonconferenceforthecelebrationof50yearsofpolymereducationandresearchatpekinguniversity(编辑修改稿)内容摘要：

elt is “biased” in favor of one helicity. Polyolefins are mainly considered as structural materials. However, more recently, one crystal modification of syndiotactic polystyrene was shown to include solvent molecules, which opens the route to produce molecular sieves. Polyolefins therefore access to the rank of functional polymers. Finally, the control of synthesis and development of new catalysts has opened the way to production of polyolefins that bine or associate different tacticities, different monomers, different sequence lengths, etc. They span the whole spectrum of elastomeric to solid materials. These polymers will provide further opportunities to investigate in more detail the correlation between properties and the different hierarchical levels of their structure. NEW POLYMER MATERIALS BY CONTROLLED/LIVING RADICAL POLYMERIZATION SYSTEMS Krzysztof Matyjaszewski Carnegie Mellon University, Center for Macromolecular Engineering Pittsburgh, PA, 15213, USA The field of Controlled/Living Radical Polymerization process (CRP) is among the most rapidly developing areas of polymer science and A graph illustrates number of papers published in the generic field of CRP and more specific Atom Transfer Radical Polymerization (ATRP), Nitroxide Mediated polymerization (NMP) and various Degenerative Transfer (DT) processes. The first paper on ATRP appeared in 1995 and at present, on average ~ 10 papers on ATRP are published every week! The main reason for such an explosive development of ATRP is its simplicity and an unusual power to prepare tailormade functional macromolecules for many special applications which will affect $20 billion/year market. ATRP has bee one of the most versatile and robust CRP methods. The tremendous interest es not only from academia, but also from industry. The formation of two consecutive industrial consortia at Carnegie Mellon University involving 30 multinational chemical panies has assisted in technology transfer from our laboratories. As a consequence the technology developed at CMU has resulted in negotiation of 4 licenses and continuing discussions with several other panies. We started our research on CRP in 1993 and in 1995 published first papers on ATRP 2 (cited over 700 times). Since that time, we published over 200 papers on CRP (cited over 6,000 times), 4 books, 35 book chapters, 24 US and 35 international patents. We increased ~ 10,000 times the activity of original ATRP catalyst (CuBr/Me6TREN vs. CuBr/2,2‟bipyridine), polymerized 40 different monomers (from various styrenes, (meth)acrylates, acrylonitrile, to water soluble monomers, including (meth)acrylamides, vinylpyridines, 2hydroxyethyl (meth)acrylates, etc.), successfully carried out ATRP in aqueous media (both homogeneous and heterogeneous), in CO2 or ionic liquids, bined ATRP with polymers prepared by other techniques such as polyolefins, and made hybrids with natural polymers and inanics. There are three directions in our research on CRP/ATRP. The first one targets fundamental mechanistic understanding and correlation between molecular structure of the involved reagents and their reactivity. This enables design and preparation of more efficient catalysts as well as expansion of the range of polymerizable monomers. The second area is focused on optimization of the ATRP and other CRP processes. This includes application of more efficient, robust and recyclable catalytic systems, continuous processes, nonstringent conditions, and upscaling the process. The third area is macromolecular engineering which includes design, synthesis and characterization of well defined polymers with controlled topologies, position and functionality. The ultimate goal is to correlate macroscopic properties with the molecular structure. It may lead to retrodesign of polymeric materials and prediction of what precise molecular structure and processing is needed for the desired materials property and function. Scheme presents below the basic chemistry and also illustrates control of polymer morphologies in the range from 10 to 1000 nm. Thus ATRP is perfectly suited for nanotechnology to prepare materials with mosaic structure (based on gradient cylinders), carbon nanocylinders with ~20 nm diameters, individual molecular brushes of the length of ~200 nm with 400 polyacrylate side chains radiating from the backbone, ~20 nm silica colloids grafted with ~1000 side chains, or coreshell particles of similar dimensions. ATRP is especially well suited for the preparation of relatively low molecular weight telechelic polymers as well as allowing transformation between other types of polymerizations and radical polymerization resulting in segmented copolymers with . polyolefins which can be used as blend patibilizers and improve many properties and performance of modity polymers. (1) Matyjaszewski, K., Davis, T. P., Eds. Handbook of Radical Polymerization。 Wiley, Hoboken 2020。 (2) Wang, J. S., Matyjaszewski, K. J. Am. Chem. Soc. 1995, 117, 5614。 Matyjaszewski, K., Xia, J. Chem. Rev. 2020, 101, 2921。 Kamigaito, M., Ando, T. Sawamoto, M. Chem. Rev. 2020, 101, 3689. Manipulation of Macromolecular Structures for Biomedical Applications Benjamin Chu Departments of Chemistry, Materials Science amp。 Eng., Biomedical Eng. Colleges of Arts amp。 Sciences, Engineering, Medicine Stony Brook UniversityStony Brook, New York, 11794 On this joyous occasion, it is the intention of this lecturer to present the thoughts on one aspect of new directions in macromolecular science and engineering that aims to meet the challenges of the 21st century. An example, based on personal experience, on the practice between academic fundamental research and technology transfer to industrial applications is presented. The topic deals。