Preparation of O‐hydroxypropyl‐N‐butyl chitosan under microwave irradiation. Issue 9 (27th October 2014)

• Record Type: Journal Article
• Authors: Liang, Xiangyu; Wen, Junjie; Wen, Caihong; Wang, Bo; Chen, Jianyu; Zhou, Li
• Is Part Of: Journal of applied polymer science. Volume 132:Issue 9(2015:May 05)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2014-10-27
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.41527
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p> <italic>O</italic>‐Hydroxypropyl‐<italic>N</italic>‐butyl chitosan (C₄‐HPCS) was prepared by microwave irradiation and phase‐transfer catalysis; this consisted of two steps: (1) the synthesis of <italic>O</italic>‐hydroxypropyl chitosan (HPCS) with chitosan and propylene oxide and (2) the synthesis of C₄‐HPCS with HPCS and 1‐butyl bromide. The results of the experiment are as follows: Fourier transform infrared spectroscopy and ¹H‐NMR displayed the characteristic peaks of C₄‐HPCS, thermogravimetric analysis showed that C₄‐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 C₄‐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. <bold>2015</bold>, <italic>132</italic>, 41527.</p> </abstract>