Premium
Acetylation reaction of polytetramethylene glycol with acetic anhydride in pyridine
Author(s) -
Ge Zhen,
Zhang Xingyuan,
Dai Jiabing,
Li Weihu,
Chao Jing,
Feng Linlin
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25743
Subject(s) - acetic anhydride , acetylation , pyridine , reagent , hydroxyl value , chemistry , polymer chemistry , proton nmr , organic chemistry , polyurethane , catalysis , biochemistry , polyol , gene
The acetylation reaction of polytetramethylene glycol (PTMG) with acetic anhydride in pyridine was studied. The extent of acetylation was measured by 1 H‐NMR, and the acetylation product was characterized with FTIR, 1 H‐NMR, and 13 C‐NMR. The effects of the experimental conditions, i.e., reaction time and temperature, acetylation reagent concentration (anhydride and hydroxyl molar ratio), were investigated. The increase in reaction temperature and reaction time favored the acetylation yields. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 1138–1142, 2007