Title:Regulation of weak intermolecular/intramolecular interaction and intercrystalline interactions and controllable preparation of nanocellulose 

Speaker：Prof. Yong Huang, Technical Institute of Physics and Chemistry, CAS

Invited by AISMST

Time：November  5, 2019 (Tuesday) 10:00 am

Venue: Lecture Room 324, AISMST (Building #2, KeJiYuan, North Campus of SCUT)

Faculties and students are warmly welcome.

Abstract：

Cellulose is a linear polysaccharide consisting of hundreds to over ten thousand β-1,4 linked glucose units. With lots of hydroxyl groups, a large network of hydrogen bonds and tightly ordered molecular chains in the crystallization zone, cellulose has a certain extent of hydrophilic, reductive and mechanical properties. The nanocrystallization and functional modification of cellulose can be achieved by nano-processing techqiues. This report mainly discusses the difference of interaction between different crystal faces of cellulose crystals. Compound molecules of different polarity can enter intodifferent crystal faces  which change corresponding crystal faces interaction. The influence of changing the polarity of system on the morphology of nanomaterials formed during cellulose nanocrystallization and the variation of the morphology of nanomaterials with the polarity of additives were discussed.By adjusting the polarity of additives, weak interaction between and within the of cellulose macromolecules can be controlled. It can realize the regulation of the mode and degree of cellulose degradation in the process of nanocrystallization. One-dimensional, two-dimensional, or one-dimensional/two-dimensional mixed nanomaterials could be prepared to control the  morphology of cellulose nanomaterials.

Brief Biography:

Professor Yong Huang received his PhD from South China University of Technology in 1996 and he is the winner of the National Outstanding Youth Fund of NSFC.

His main research interest are in the field of modification, functionalization and utilization of natural renewable resources. He has received more than 40 research  grants that from MOST, NSFC, CAS and Guangdong Province, etc.  He has > 200 publications and named inventor on 50 patents. Awarded the third prize of natural science of CAS(1994); the first prize of outstanding young scientific workers of Chinese Academy of Sciences Guangzhou Branch (1989, 1992); Chemistry Award for Chinese Youth of CCS(1991); “Special Government Allowance” (1992); “The 4th China Youth Science and Technology Award” (1994); “Guangdong Excellent Young and Middle-aged Expert” (1996); National Outstanding Youth Fund (1999); In 2005, Professor Yong Huang was funded by the Innovation Research Group Fund of the National Natural Science Foundation of China, and organized the industrialization of a number of scientific and technological achievements.