TAAB交联的聚丙烯酸-丙烯酰胺吸水树脂的高温耐水解性能
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摘要
针对现有吸水树脂高温易水解的缺陷,以四烯丙基溴化铵为交联剂,偶氮二异丁咪唑啉盐酸盐为引发剂,丙烯酸和丙烯酰胺为共聚单体,采用水溶液聚合法制备了一种高温耐水解型吸水树脂,并通过单因素实验法对聚合条件进行优化。结果表明:交联剂用量、引发剂用量、丙烯酰胺用量分别占丙烯酸质量的0.16%,0.12%,20.00%,中和度为75%时,吸水树脂在180℃条件下表现出良好的耐水解性能,吸水倍率可达362 g/g;吸水树脂在pH值为5~9的溶液中表现出良好的耐酸碱性能。
An anti-hydrolyzing poly(acrylic acid-acrylamide)(P(AA-AM))superabsorbent resin was synthesized via aqueous solution polymerization with tetrapropylammonium bromide(TAAB) as crosslinking agent,azo diisopropyl imidazoline hydrochloride as initiator,acrylic acid and acrylamide as monomers to improve the anti-hydrolyzing property of superabsorbent at high temperature. The reaction conditions were optimized through single factor experiment. The results show that when the mass fraction of the crosslinking agent,initiator,acrylamide in acrylic acid are 0.16%,0.12%,and 20% respectively,the superabsorbent shows good anti-hydrolyzing property and its water absorbency reaches 362 g/g at 180 ℃ with the neutralization degree of75%. The swelling behaviors of superabsorbent prepared in solutions whose pH ranges from 5 to 9 is acid-alkali proof.
An anti-hydrolyzing poly(acrylic acid-acrylamide)(P(AA-AM))superabsorbent resin was synthesized via aqueous solution polymerization with tetrapropylammonium bromide(TAAB) as crosslinking agent,azo diisopropyl imidazoline hydrochloride as initiator,acrylic acid and acrylamide as monomers to improve the anti-hydrolyzing property of superabsorbent at high temperature. The reaction conditions were optimized through single factor experiment. The results show that when the mass fraction of the crosslinking agent,initiator,acrylamide in acrylic acid are 0.16%,0.12%,and 20% respectively,the superabsorbent shows good anti-hydrolyzing property and its water absorbency reaches 362 g/g at 180 ℃ with the neutralization degree of75%. The swelling behaviors of superabsorbent prepared in solutions whose pH ranges from 5 to 9 is acid-alkali proof.
引文
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[11]Jiang Zuming,Cao Xulong,Guo Lanlei. Synthesis and swelling behavior of poly(acrylic acid-acryl amide-2-acrylamido-2-methyl-propansulfonic acid)superabsorbent copolymer[J]. J Pet Explor Prod Technol,2017,7(1):69-75.
[2]Sahu M,Samal R,Sahoo P K. Preparation of superabsorbent polymer(rice straw-g-polyacrylamide)from renewable biowaste[J]. Asian J Chem,2015,27(9):3377-3382.
[3]张太亮,范开鑫,刘婉琴,等. P(AA/AM/APEG)/纳米二氧化硅复合高吸水树脂的合成及性能[J].精细化工,2017,34(2):145-151.
[4]He Guanghua,Ke Wanwan,Chen Xiang,et al. Preparation and properties of quaternary ammonium chitosan-g-poly(acrylic acid-co-acrylamide)superabsorbent hydrogels[J]. React Funct Polym,2017,111(2):14-21.
[5]谢静思,张熙,代华,等.耐水解高吸水树脂的合成与性能研究[J].化学研究与应用,2010,22(7):934-938.
[6]蒋笃孝,宋岭瑛,李爱军.耐水解性高吸水树脂的制备[J].化学与粘合,2001,37(6):239-241.
[7]Mu Yuanchun,Du Dayan,Yang Ruicheng,et al. Preparation and performance of poly(acrylic acid–methacrylic acid)/montmorillonite microporous superabsorbent nanocomposite[J].Mater Lett,2015,142(3):94-96.
[8]Gao Jiande,Liu Jin,Peng Hui,et al. Preparation of a low-cost and eco-friendly superabsorbent composite based on wheat bran and laterite for potential application in Chinese herbal medicine growth[J]. Roy Soc Open Sci,2018,5(5):7-22.
[9]Lee J,Park S,Roh H,et al. Preparation and characterization of superabsorbent polymers based on starch aldehydes and carboxymethyl cellulose[J]. Polymers,2018,10(6):605-621.
[10]Grignon J,Scallan A M. Effect of pH and neutral salts upon the swelling of cellulose gels[J]. J Appl Polym Sci,1980,25(12):2829-2843.
[11]Jiang Zuming,Cao Xulong,Guo Lanlei. Synthesis and swelling behavior of poly(acrylic acid-acryl amide-2-acrylamido-2-methyl-propansulfonic acid)superabsorbent copolymer[J]. J Pet Explor Prod Technol,2017,7(1):69-75.