林产化学与工业2017，Vol.37Issue(4)：115-122,8.DOI:10.3969/j.issn.0253-2417.2017.04.017
一锅法合成野豌豆淀粉基高吸水树脂
Vetch Starch Based Superabsorbent Polymers Synthesized by One-pot Method
摘要
Abstract
The transparent gel-like super absorbent polymers(SAP)were synthesized to utilize wild starch resources effectively.The VS-SAP were prepared by the static one-pot method through the graft copolymerization between acrylic acid(AA)and vetch starch(VS)initiated by ammonium persulfate.The reaction conditions,the foaming agent amount and added time that affect the equilibrium and real-time swelling capacity in running water were further investigated.The optimal conditions were that starch 0.3 g,water 24mL,NaOH 0.80g,APS 30mg,bisacrylamide(MBA)6mg,AA 3.6mL,respectively,including reaction at 65 ℃ for 30 min,then adding 0.5 g/g NaHCO3(based on the starch mass)and keeping for 4.5 h reaction.Under the optimum conditions,the yield of the synthesized VS-SAP was 95.7％and the VS-SAP could absorb 2 589,604,101 and 104 g/g water,in distilled water,running water,normal saline and artificial urine,respectively.The water absorption capacity in running water at 1 h was 257 g/g.The Fourier translation infrared spectroscopy(FT-IR)indicated that acrylic was successfully grafted onto the starch molecule chain.The iodine staining results showed that VS-SAP still retained the main molecular chains' structure of starch.The TG results indicated that the VS-SAP samples had a stronger thermal stability than original starch and poly(acrylic acid)(PAA).The SEM results showed that the surface structures were more coarse and loose after reaction.关键词
接枝共聚/水凝胶/交联/野豌豆/淀粉Key words
graft copolymerization/hydrogel/cross-linking/vetch/starch分类
化学化工引用本文复制引用
刘廷国,钱立武,黄志良,吴小说,郭军,刘天宝..一锅法合成野豌豆淀粉基高吸水树脂[J].林产化学与工业,2017,37(4):115-122,8.基金项目
国家自然科学基金资助项目(51403024) （51403024）
安徽省教育厅自然项目(KJ2015A282,KJ2017A575) （KJ2015A282,KJ2017A575）
