论坛时间：2016年5月27-28日

论坛地点：沪杏科技图书馆

主讲人：萧守道

摘要：We have recently demonstrated a revolutionary membrane design based on hierarchical assembly of fibrous materials with different fiber diameters (nm to μm). This design has led to breakthrough filtration performance from microfiltration to reverse osmosis, i.e., high flux, low energy and small system footprint. The key components of this technology are electrospun nanofibers (dia. ~100 nm) and carboxylate cellulose nanofibrils (dia. ~5 nm) extracted from biomass using a combined TEMPO-oxidation/defibrillation method.  These nanofibers have large surface-to-volume ratio and high capacity for surface modification/charge, making them ideal materials for fabrication of highly permeable separation media, e.g., microfiltration filter, that can simultaneously remove bacteria, viruses and toxic metal ions at gravity pressure. We further discovered that a simple two-chemical process can produce carboxylate nanocelluloses of different dimensions fusing biomass from different source. This ‘green’ method can bypass both electrospinning and conventional nanocellulose fabrication steps (extraction/pretreatment, bleaching and TEMPO oxidation) and generate inexpensive new nanostructured materials for water purification in a very sustainable manner.

主讲人简介：萧守道，Dr. Benjamin S. Hsiao, Professor of Chemistry at Stony Brook University, has a distinguished national and international research reputation in polymer science. Dr. Hsiao has published over 442 scientific papers, 42 reviews and chapters in books and encyclopedias, 34 issued patents (20 U.S. patents) and 15 pending patent applications, and two books. There are over 29,000 total citations of his publications. The major accomplishments of his research are: (1) development of frontier synchrotron X-ray scattering for polymer research, (2) advancement of fundamental understanding of polymer crystallization, and (3) applications of nanofiber technology for improving health and environment.  Based on these accomplishments, he was elected as Fellow of the American Physical Society (APS) in 2002, Fellow of the American Chemical Society (ACS) in 2011, Fellow of American Association for the Advancement of Science (AAAS) in 2011, Fellow of National Academy of Inventors (NAI) in 2013, Fellow of the Materials Research Society (MRS) in 2015, received the Chang-Jiang Professorship from the Education Ministry of China in 2008, and received the 2015 Cooperative Research Award in Applied Polymer Science from the American Chemical Society. The quality of his work elevates the standards of scholarship both within and beyond the polymer community, allowing him to develop significant technology, including a breakthrough technology for water purification.