两种共聚单体对淀粉/聚丙烯酸钠超级吸水材料耐盐性能的影响  

Effect of two comonomers on salt tolerance of starch/sodium polyacrylate superabsorbent

作　　者：高杨 冯鑫鑫 邢哲[1] 李林繁[1] 黄卫兵[1,3] 李荣 吴国忠[1,4] GAO Yang;FENG Xinxin;XING Zhe;LI Linfan;HUANG Weibing;LI Rong;WU Guozhong(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Changhu New Material Co.Ltd.,Shanghai 201800,China;School of Physical Sceince and Technology ShanghaiTech University,Shanghai 200031,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049 [3]上海长沪新材料有限公司,上海201800 [4]上海科技大学物质科学与技术学院,上海200031

出　　处：《辐射研究与辐射工艺学报》2023年第5期32-40,共9页Journal of Radiation Research and Radiation Processing

基　　金：中国科学院上海应用物理研究所重大科技项目“辐射技术在生态环境和健康领域的若干前沿应用研究”资助~~。

摘　　要：利用γ射线共辐照法,制备了由两种共聚单体接枝交联而成的淀粉基超级吸水材料(Super absorbent polymer,SAP)。傅里叶变换红外光谱证明了丙烯酰胺(AM)和2-丙烯酰氨基-2-甲基-1-丙烷磺酸(AMPS)分别被引入到淀粉/聚丙烯酸钠(Starch-g-PAA)SAP中。采用热重分析法研究了SAP的热分解行为。通过引入AM和AMPS单体,SAP的耐盐性得到显著提升,引入AMPS的SAP在生理盐水中的吸液倍率从46 g/g(未添加AMPS)提高至81 g/g(AA∶AMPS=3∶1)。Starch-based super absorbent polymers(SAPs)were prepared using the gamma-ray co-irradiation method,where two comonomers were grafted and cross-linked.Incorporation acrylamine(AM)and 2-acrylamido-2-methyl-1-propanesulfonic acid(AMPS)into the SAP was confirmed using Fourier transform infrared spectroscopy.The thermal decomposition behavior of the SAP was studied using thermogravimetric analysis.The salt tolerance was significantly improved by introducing AM and AMPS monomers into the SAP.The absorption rate of the SAP with AMPS in normal saline increased from 46 g/g(without AMPS)to 81 g/g when the ratio of AA:AMPS was 3:1.

关 键 词：超级吸水材料 辐射接枝 水溶性淀粉 丙烯酸 耐盐性能 

分 类 号：TL13[核科学技术—核能科学]