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Preparation of O ‐hydroxypropyl‐ N ‐butyl chitosan under microwave irradiation
Author(s) -
Liang Xiangyu,
Wen Junjie,
Wen Caihong,
Wang Bo,
Chen Jianyu,
Zhou Li
Publication year - 2015
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.41527
Subject(s) - chitosan , thermogravimetric analysis , materials science , surface tension , fourier transform infrared spectroscopy , bromide , catalysis , propylene oxide , nuclear chemistry , phase transfer catalyst , chemical engineering , polymer chemistry , chemistry , organic chemistry , ethylene oxide , polymer , copolymer , composite material , physics , quantum mechanics , engineering
ABSTRACT O ‐Hydroxypropyl‐ N ‐butyl chitosan (C 4 ‐HPCS) was prepared by microwave irradiation and phase‐transfer catalysis; this consisted of two steps: (1) the synthesis of O ‐hydroxypropyl chitosan (HPCS) with chitosan and propylene oxide and (2) the synthesis of C 4 ‐HPCS with HPCS and 1‐butyl bromide. The results of the experiment are as follows: Fourier transform infrared spectroscopy and 1 H‐NMR displayed the characteristic peaks of C 4 ‐HPCS, thermogravimetric analysis showed that C 4 ‐HPCS was stable until 240°C, the critical micelle concentration was 0.025 wt %, the surface tension was equal to 65.70 ± 0.09 mN/m, the hydrophile–lipophile balance number value was 13.55, and the emulsifying power, foaming expansion, and foaming volume stability were 73.10, 45, and 94 wt %, respectively. This indicated that C 4 ‐HPCS had superior surface performance and more excellent hydrophilicity. In addition, the microwave irradiation and phase‐transfer catalysis used in the experiment were considered to be more environmentally friendly and time‐saving methods. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41527.