Gelation in the Copolymerization of Diallyldimethylammonium Chloride with Acrylamide
作者:
Akira Matsumoto,
Shigeki Wakabayashi,
Masayoshi Oiwa,
GeorgeB. Butler,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1989)
卷期:
Volume 26,
issue 11
页码: 1475-1487
ISSN:0022-233X
年代: 1989
DOI:10.1080/00222338908052066
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Diallyldimethylammonium chloride (DADMAC) was free-radical copolymerized with acrylamide (AA) in water at a total monomer concentration of 4 mol/L and 40°C with different monomer feed compositions. Gelation occurred only for 20/80 DADMAC/AA monomer feed although crosslinking was observed for all monomer feed compositions. The gel point was at 51% conversion, and the swelling ratios of the resulting gels were quite high, from 1400 to 700. Addition of 2‐propanol as a chain‐transfer reagent reduced crosslinking and prevented gelation. These results are mechanistically discussed in connection with the cyclopolymerizability of DADMAC, and significant allylic hydrogen abstraction by the growing polymer radical characteristic of allyl polymerization is proposed.
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