秸秆纤维素接枝AA/AM高吸水性树脂合成与性能研究

Study on Synthesis and Properties of Straw Cellulose Grafted with AA/AM High Absorbent Resin

将玉米秸秆纤维素与丙烯酸（AA）和丙烯酰胺（AM）接枝共聚，制得高吸水性树脂（SAR）。采用正交试验对合成条件进行了优化，通过红外光谱（FTIR）和扫描电镜（SEM）对最优条件下台成的SAR进行结构表征，并对其吸水性能和保水性能进行了测试。结果表明：单体成功地接技到秸秆纤维素上，最佳合成条件为：单体组成AA：AM=1：1，引发剂用量为单体总量的1．6％。交联剂用量为0.2％，秸秆用量为5％，AA中和度为80％。此条件下制备的SAR吸水倍率为639．40gig，在0．9％NaCl溶液中的吸液倍宰为72．89gig，具有优良的吸水性能和保水性能。

The superabsorbent resin(SAR) was prepared by corn straw cellulose grafting with acrylic acid(AA) and acrylamide(AM). With the help of Fourier transform infrared spectrometer(FTIR) and scanning electron microscope(SEM) to characterize the structure of the SAR prepared in the optimized synthesis conditions which were determined by orthogonal experiment, and the water absorption performance and water retention performance of the SAR were tested. The results show that the monomers are successfully grafted on the surface of straw cellulose. The optimal synthesis conditions are as follows: monomer composition AM:AA is 1:1, initiator content is 1.6% of monomer, the amount of crosslinking agent is 0.2%, the amount of straw is 5%, the neutralization degree of AA is 80%. The SAR synthesized in optimum conditions has excellent water absorption performance and water retention performance, and its absorption ratio is 639.4 g/g in water and 72.89 g/g in 0.9% NaCl solution.