Abstract:
:Alkaline-urea aqueous solvent system provides a novel and important approach for the utilization of polysaccharide. As one of the most important polysaccharide, chitosan can be well dissolved in this solvent system, and the resultant hydrogel material possesses unique and excellent properties. Thus the sound understanding of the gelation process is fundamentally important. However, current study of the gelation process is still limited due to the absence of direct observation and the lack of attention on the entire process. Here we show the entire gelation process of chitosan LiOH-urea aqueous system by aggregation-induced emission fluorescent imaging. Accompanied by other pseudo in situ investigations, we propose the mechanism of gelation process, focusing on the formation of junction points including hydrogen bonds and crystalline.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Wang Z,Nie J,Qin W,Hu Q,Tang BZdoi
10.1038/ncomms12033subject
Has Abstractpub_date
2016-06-23 00:00:00pages
12033issn
2041-1723pii
ncomms12033journal_volume
7pub_type
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