Non-catalytic photo-induced graft copolymerization of methyl methacrylate onto O-acetyl-chitin

O-Acetyl-chitin was prepared in a lithium chloride- N,N-dimethylacetamide (LiCl/DMAc) system with high yield. The degree of acetylation was controlled with the amount of acetic anhydride. The obtained O-acetyl-chitin swelled not only in polar organic solvents, such as N,N-dimethylformamide (DMF) and...

Full description

Saved in:
Bibliographic Details
Published in:European polymer journal 1997-09, Vol.33 (9), p.1505-1509
Main Authors: Morita, Yasumasa, Sugahara, Yasusato, Takahashi, Akira, Ibonai, Masaru
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Grafting and modifications
Physicochemistry of polymers
Polymers and radiations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:O-Acetyl-chitin was prepared in a lithium chloride- N,N-dimethylacetamide (LiCl/DMAc) system with high yield. The degree of acetylation was controlled with the amount of acetic anhydride. The obtained O-acetyl-chitin swelled not only in polar organic solvents, such as N,N-dimethylformamide (DMF) and dimethylsulfoxide (DMSO), but also in water. O-Acetyl-chitin powder was graft-copolymerized to methyl methacrylate without catalyst. Graft copolymerization was initiated by the photolysis of the O-acetyl-group and the polymerization in a Quartz tube proceeded easier than in a Pyrex tube. The addition of DMSO in the reaction system did not always accelerate the graft copolymerization. Effects of various factors such as monomer concentration, degree of substitution of the O-acetyl-group and polymer concentration were also investigated.
ISSN:0014-3057
1873-1945
DOI:10.1016/S0014-3057(97)00092-X