单模聚焦微波辐射下有机纳米蒙脱土复合聚丙烯酸高吸水性树脂的制备与性能研究  

Synthesis,character of PAA/organic nano-MMT super absorbent resin under focused signal-mode microwave irradiation

作　　者：来水利[1] 肖雨晨[1] 高莹华[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2013年第3期68-71,共4页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅重点实验室项目(12JS016);咸阳市科技计划项目(2012k05-02);榆林市2011年科技计划项目;陕西科技大学研究生创新基金项目

摘　　要：首先以纳米蒙脱土(Nano-MMT)、十六烷基三甲基溴化铵(CTAB)为原料,通过单模聚焦微波辐射法制备了有机纳米蒙脱土,然后利用单模聚焦微波辐射技术合成了有机纳米蒙脱土复合聚丙烯酸高吸水性树脂(SAR),通过X-射线衍射分析(XRD)和傅立叶红外光谱分析(FTIR)对产物结构进行了表征,研究了微波辐射时间、纳米有机蒙脱土的加入量对树脂吸液倍率的影响.结果表明:十六烷基三甲基溴化铵可成功插入纳米蒙脱土片层之间,且微波辐射下有机纳米蒙脱土复合聚丙烯酸高吸水性树脂的制备时间大大缩短,其最大吸水倍率达1 450g·g-1,在质量分数为0.9%的食盐水中的最大吸盐水倍率达150g·g-1.In this paper, organic nano-montmorilionite days were prepared by means of sin- gle-mode focusing microwave irradiation and cation exchange reaction in a cetyltrimethylam- monium bromide （CTAB） solution and nano-montmorillonite（nano-MMT）mixture suspen- sion. Then the organic nano-montmorillonite clays were used for preparation of organic-inor- ganic hybrid superabsorbents. Aqueous solution polymerization of acrylic acid （AA）, using precision microwave organic synthesis system and its single-mode focusing microwave radia- tion was studied. The structure of the nano-MMT, organic nano-MMT, super absorbent res- in were characterized by X-ray diffraction（XRD） and fourier transform infrared spectroscopy （FTIR）. The effect of the microwave irradiation time, the dosage of OMMT on absorbency of superabsorbent were investigated. The results show that the CTAB cations were absorbed on the surface of nano-MMT and the organic nano-MMT effectively bonded with the polymermolecules after copolymerization. The reaction time were greatly decreased. The highest ab- sorbencies of SAR for distilled water and 0.9wt% NaC1 solution are 1 450 g · g-1 and 150 g · g 1 , respectively.

关 键 词：单模聚焦微波辐射 有机纳米蒙脱土 丙烯酸 十六烷基三甲基溴化铵 高吸水性树 脂 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]