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- Title
Effect of Modified Konjac Glucomannan Nanocrystals on Properties of Poly (vinyl alcohol)Film.
- Authors
CHEN Xiuling; GAO Shanjun; SHEN Chunhui; QI Hongsheng; LIU Sawen
- Abstract
Konjac glucomman(KGM)nanocrystals were prepared by a hydrolysis reaction of KGM with sulfuric acid and then was modified by surface grafting with 3-(trimethoxysilylpropyl)octadecylammonium chloride and then by ion-exchanging with nonylphenol polyoxyethylene ether sodium sulfate to obtain a KGM nanocrystal fluid. The poly (vinyl alcohol) -based composite films containing different concentrations of KGM nanocrystals and their fluid were prepared by a solution-casting method, and their structures and properties were investigated by Fourier-transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, and tensile test. The results indicated that the structure of KGM nanocrystals was not destroyed after surface modification, and their fluid was uniformly dispersed in the PVA matrix. The composite films achieved an improvement in initial decomposition temperature by 23 °C and in tensile strength 34. 7 % when 3 wt% of KGM nanocrystal fluid was incoporated.
- Publication
China Plastics / Zhongguo Suliao, 2020, Vol 34, Issue 5, p38
- ISSN
1001-9278
- Publication type
Article
- DOI
10.19491/j.issn.1001-9278.2020.05.007