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摘要
以淀粉、丙烯酸(AA)和丙烯酰胺(AM)为原料,采用过硫酸铵[(NH4)2S2O8]作为引发剂,利用N,N-亚甲基双丙烯酰胺(NMBA)进行交联,采用水溶液聚合法制备了AA-AM共聚淀粉吸水树脂。考察了丙烯酸溶液pH、丙烯酸单体用量、引发剂及交联剂用量、反应体系温度与时间对合成树脂性能的影响。通过性能测试和分析得出优化合成条件为:丙烯酸溶液pH=5.5,丙烯酸单体与葡萄糖剩基(AGU)摩尔比为7∶1,过硫酸铵用量为0.35mmol,交联剂用量为0.08571mmol,反应时间为65℃,反应温度为3h。在优化工艺下合成的树脂吸收蒸馏水、0.9% NaCl溶液量分别达到798.6g/g和95.7g/g。采用红外光谱(FT-IR)和热重分析(TG)对合成的树脂进行了表征与分析评价。
Abstract
AA-AM copolymer starch absorbent resin was prepared by aqueous solution polymerization,starch,acrylic acid (AA) and acrylamide (AM) as raw materials,ammonium persulfate ((NH4)2S2O8) as initiator,N,N-methylene bisacrylamide (NMBA) was crosslinked,The effects of pH value of acrylic acid solution,amount of acrylic monomer,amount of initiator and crosslinking agent,temperature and time of reaction system on the properties of synthetic resin were investigated.The optimum synthesis conditions were obtained by performance test and analysis.The pH of acrylic acid solution was 5.5,the molar ratio of acrylic acid monomer to glucose residue (AGU) was 7∶1,the dosage of ammonium persulfate was 0.35mmol,the dosage of crosslinking agent was 0.08571mmol,the reaction time was 65℃,and the reaction temperature was 3h.Under the optimum conditions,the amount of absorbed distilled water and 0.9% NaCl solution reached 798.6g/g and 95.7g/g,respectively.The resin was characterized and evaluated by infrared spectroscopy (IR) and thermogravimetric analysis (TG).
关键词
淀粉
/
吸水树脂
/
丙烯酸
/
丙烯酰胺
Key words
starch
/
water absorbent resin
/
acrylic acid
/
acrylamide
淀粉基吸水树脂的制备与性能分析[J].
化工新型材料, 2019, 47(10): 211-215 DOI:
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基金资助
安徽省自然科学基金面上项目(1808085ME145);安徽省高校省级自然科学研究项目(KJ2018A0114)
