【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)。更多还原

【Abstract】 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.更多还原