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青年学术论坛第八十九场
2017-12-27 11:19   审核人:

讲座:From Fracture Mechanics to Nanofiber Dry Adhesives,地点:A706

讲座时间:2017年12月28日下午15:00-16:00

摘要:In a series of research and development studies, Wong and coworkers have presented understanding and thus a platform technology for processing high shear and low peel dry adhesives based on electrospinning-enabled techniques. Nature inspired adhesion is performed using electrospun polymer blends. Electrospun nonwovens are used in commercial processes for applications in filter media, sound-proof partitions, biomedical scaffolds, wound dressings, water-absorbent materials, etc. None applied these nonwovens as effective, repositionable dry adhesives with tunable shear and peel adhesion strengths. In this study, we prepare fibers that produce adhesion on a rigid substrate. Traditionally, polymer alloys and blends were achieved via large scale extrusion compounding or reactive mixing. In our work, a highly spinnable polymer is blended with a low Tg component in a heterogeneous morphology by scalable electrospinning. Electrospinning is a viable approach to forming nanoscale connectors and mechanical interlocks between polymer-polymer and polymer-inorganic interfaces. The formation of multicomponent polymer blends by electrospinning contributes to a marked increase in adhesion strength and yet continuous and/or co-continuous morphology.

课程:Deformation and Fracture of Polymers and Discontinuous Composites,地点:A706

课程时间:2017年12月29日下午9:00-11:00

个人简介: Dr. Wong began his graduate training in 1993 in mechanics and mechanisms of fracture of polymer blends with and without glass fiber reinforcements at UMass Amherst, working with Shanti V. Nair and Lloyd A. Goettler. Later he joined the group of Yiu-Wing Mai, FRS, at University of Sydney on identifying the roles of maleated block copolymers as a sequence of events in toughening nylon polypropylene blends. He later pursued an academic career in Singapore, teaching in the School of Materials Science and Engineering in Nanyang Technological University (NTU). He has since graduated numerous graduate students and postdocs. Dr. Wong has authored and coauthored over 70 research articles in books, journals and patent literatures, with additional papers in conference proceedings and refereed abstracts. There were over 3800 citations, a Hirsh-index = 28 and i-10 > 58, according to Google Scholar, as of 2016. Two papers: one on nanocomposites and one on electrospinning, were cited >400 times. In 2007 he was selected for anNSF Faculty Early CAREER Awardentitled "Electrospinning-Enabled Bio-Inspired Materials Research and Education" from the Program of Materials Processing and Manufacturing. He is an electedFellow of American Society of Mechanical Engineersin 2014 and an electedFellow of the Society of Plastics Engineersin 2015. He was promoted to full professor (2013 -) with tenure (2009 -) at the University of Akron. In this capacity, he is the Vice-President and Chief Technology Officer of Akron Ascent Innovations.

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