Synthesis and properties of organic/inorganic superabsorbent resin

doi:10.11949/j.issn.0438-1157.20151005

Abstract

Abstract:

One superabsorbent resin (SAR) was synthesized by solution copolymerization with starch, kaolin, acrylic acid as the main raw materials. The influences of mass ratio of monomers to starch, degree of neutralization of acrylic acid, amount of cross-linking agent and initiator on the absorbency were studied to optimize the preparation condition. The absorbencies of the best sample thus synthesized can be up to 1195.4 g·g^-1 in distilled water and 90.1 g·g^-1 in saline solution (0.9%,mass). The results of Fourier Transform Infrared Spectroscopy (FTIR) showed that OH in kaolin participates in the polymerization reaction, enhancing the crosslinking extent and increasing the absorbency of sample. SEM results revealed that the SAR sample had the multi-porous and layered structure. The experiments of thermal stability indicated that SAR synthesized in this paper had the stable absorbency under 100℃.

Key words: superabsorbent resin, starch, polymerization, synthesis, stability

摘要：

以玉米淀粉、羧甲基淀粉钠和丙烯酸为主要原料,同时加入活性高岭土,采用水溶液共聚法制备了复合高吸水树脂。考察了接枝共聚过程的影响因素,确定了合成树脂的最优工艺条件,合成的树脂吸水倍率为1195.4 g·g^-1,吸盐水(质量分数为0.9%的氯化钠溶液)倍率为90.1 g·g^-1。借助于傅里叶红外(FTIR)、扫描电镜(SEM)及热重-差热分析(TG-DTA)技术对合成树脂进行了性能和结构表征,并考察了样品的热稳定性。结果表明,高吸水树脂在100℃下具有良好的热稳定性,所制备样品具有商业化前景。

关键词: 高吸水树脂, 淀粉, 聚合, 合成, 稳定性

CLC Number:

TQ320.6

HAN Yueyun, CAO Qiling, HUA Quanxian, LU Leiming, TANG Jianwei, LIU Yong. Synthesis and properties of organic/inorganic superabsorbent resin[J]. CIESC Journal, 2015, 66(9): 3795-3800.

韩月云, 曹奇领, 化全县, 芦雷鸣, 汤建伟, 刘咏. 有机/无机复合高吸水树脂的制备及性能[J]. 化工学报, 2015, 66(9): 3795-3800.

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