γ射线辐照法制备魔芋葡甘聚糖接枝聚丙烯酰胺及其表征

Synthesis and characterization of konjac glucomannan-graft-polyacrylamide via gamma-irradiation.

作者信息

Xu Zhenlin, Yang Youhui, Jiang Yueming, Sun Yuanming, Shen Yudong, Pang Jie

机构信息

College of Food Science, South China Agricultural University, Guangzhou 510642, PR China.

出版信息

Molecules. 2008 Mar 1;13(3):490-500. doi: 10.3390/molecules13030490.

DOI:10.3390/molecules13030490

PMID:18463561

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6245445/

Abstract

The synthesis of konjac glucomannan-graft-polyacrylamide (KGM-g-PAM) was carried out at 25 degrees C by gamma-irradiation under a N2 atmosphere. The effects of absorbed radiation dosage and monomer concentration on grafting yield and water absorbency were studied. The grafted copolymers were characterized using Fourier Transform Infrared(FTIR) spectroscopy, nuclear magnetic resonance (NMR), x-ray diffraction (XRD),thermogravimetric analysis (TGA) and gel permeation chromatography (GPC). The grafting yield was observed to increase with increasing absorbed dosage and monomer concentration. Compared with the original KGM, the grafted copolymers exhibited better thermal stability and water absorbency. The results suggest that gamma-irradiation is convenient and efficient for inducing graft copolymerization of KGM and acrylamide (AM).

摘要

魔芋葡甘聚糖接枝聚丙烯酰胺（KGM-g-PAM）的合成在25℃下于氮气气氛中通过γ辐射进行。研究了吸收辐射剂量和单体浓度对接枝率和吸水性的影响。使用傅里叶变换红外（FTIR）光谱、核磁共振（NMR）、X射线衍射（XRD）、热重分析（TGA）和凝胶渗透色谱（GPC）对接枝共聚物进行了表征。观察到接枝率随吸收剂量和单体浓度的增加而增加。与原始KGM相比，接枝共聚物表现出更好的热稳定性和吸水性。结果表明，γ辐射对于诱导KGM与丙烯酰胺（AM）的接枝共聚是方便且高效的。