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Preparation of a new hydrophilic copolymer from poly( α ‐hydroxyacrylic acid)
Author(s) -
Uehara Hiroshi,
Satoh Mitsuru
Publication year - 1999
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19991101)20:11<565::aid-marc565>3.0.co;2-p
Subject(s) - copolymer , methanol , aqueous solution , polymer chemistry , allyl alcohol , alcohol , polymer , vinyl alcohol , chemistry , materials science , organic chemistry , catalysis
A new hydrophilic copolymer containing α ‐hydroxy allyl alcohol segments was prepared by reducing poly( α ‐hydroxyacrylic acid) (PHA) with NaBH 4 in water and mixed solvents of methanol and polar solvents. Conversion to the desired allyl alcohol group in the resultant polymers was confirmed with ICP, FT‐IR, and 13 C NMR spectroscopies. The degree of conversion was as low as 5% for PHA reduced in aqueous solution, while for those reduced in the mixed solvents it was significant (ca. 60–70%).