摘要
以羧甲基纤维素钠（CMC）、丙烯酰胺（AM）、2-丙烯酰胺基十四烷基磺酸钠（NaAMCl4S）为单体，过硫酸铵（APS）为引发剂，N,N-亚甲基双丙烯酰胺（MBA）为交联剂，采用水溶液聚合法制备了高吸水性树脂CMC-g-P（AM-co-NaAMC14S），重点考察了CMC和NaAMC14S的质量分数对树脂吸水性能的影响，并利用FTIR和SEM对树脂的结构和表面形态进行了表征。结果表明：当CMC和NaAMCl4S的质量分数分别为10％和0．93％时，树脂具有较高的吸水倍率和良好的保水性能，优化条件下制备的树脂对去离子水和生理盐水（质量分数0．9％的NaCl水溶液）的吸液倍率分别达到1425．6和78．6g／g；在30、60和100℃条件下，静置2h，保水率分别为89．6％、68．6％和50．3％；在1000和12000r／min的转速下离心45min，保水率分别为99．94％和73．70％。FTIR分析表明：AM和NaAMCl4S成功接枝在CMC上；SEM分析结果表明：树脂具有较好的空间网络结构（比表面积较大），具有较高的吸液性能。
A superabsorbent resin, CMC-g-P（AM-co-NaAMC14S）, was synthesized by aqueous solution polymerization using carboxymethylcellulose sodium （CMC）, acrylamide （AM） and 2-acrylamido- tetradecanesulfonate （NaAMClaS） as monomers, ammonium persulfate （APS） as initiator and N,N＂ methylene-bisacrylamide （MBA） as cross-linking agent. The influences of mass fraction of CMC and mass fraction of NaAMC14S on water absorbency of the resin were mainly investigated. FTIR and SEM were used to characterize the structure and surface morphology of the resin. The results showed that the synthesized resin had a higher water absorption rate and a better water retention property, when the mass fraction of CMC and NaAMC14S were 10% and 0.93%, respectively. The water absorbency of the resin obtained under the optimized preparation conditions in distilled water was 1425.6 g/g and that in 0.9% （mass fraction） NaC1 was 78.6 g/g. After the samples were placed at 30 ℃, 60 ℃ and 100 ℃ for 2 h, the water retention rates of the resin were 89.6%, 68.6% and 50.3%, respectively. In addition, after the swelling samples were centrifuged for 45 min at 1000 r/min and 12000 r/min, the water retention rates were 99.94% and 73.70%, respectively. FTIR analysis indicated that AM and NaAMC14S were successfully grafted onto CMC. SEM analysis revealed that the superabsorbent resin had better spatial network structures （lager specific surface area）, which resulted in better absorbing performances.
作者
邱海燕
薛松松
张洪杰
兰贵红
曾文强
张名
QIU Hai-yan;XUE Song-song;ZHANG Hong-jie;LAN Gui-hong;ZENG Wen-qiang;ZHANG Ming(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,Sichuan,China;The No.1 Gas Production Plant of Xinjiang Oilfield,Karamay 834000,Xinjiang,China;Safety,Environment,Quality Supervision and Testing Research Institute,CNPC Chuangqing Drilling Engineering Co.,Ltd.,Guanghan 618300,Sichuan,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2018年第9期1609-1614,1620,共7页
Fine Chemicals
基金
油气田应用化学四川省重点实验室开放基金(YQKF201404)~~
关键词
羧甲基纤维素钠
水溶液聚合法
高吸水性树脂
保水性能
空间网络结构
吸液性能
丙烯酸系列化学品
carboxymethylcellulose sodium
aqueous solution polymerization method
superabsorbentresin
water retention property
spatial network structure
absorbency
series of acrylic chemicals
