辉光放电等离子体引发聚合制备聚丙烯酸/凹凸棒超强吸水材料及性能研究  

Synthesis and characterization of superabsorbent composite by using glow discharge electrolysis plasma

作　　者：杨武[1] 杨珍珍[1] 俞洁[1] 朱文娟[1] 王兴刚[1] 李岩[1] 高锦章[1] 

机构地区：[1]西北师范大学化学化工学院,省部共建生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2009年第6期60-64,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20873101)

摘　　要：以丙烯酸(AA)和凹凸棒土(ATP)为原料,N,N′-亚甲基双丙烯酰胺为交联剂,采用辉光放电等离子体引发聚合法在水溶液中一步制得了聚丙烯酸/凹凸棒(PAA/ATP)高吸水性复合材料.考察了放电电压、交联剂用量、单体浓度及凹凸棒土含量对树脂吸水率的影响,并用红外光谱(FT-IR)、扫描电镜(SEM)、原子吸收光谱(AAS)和热重分析(TGA)表征了复合材料的结构、形态和性能.结果表明,在最佳条件下,复合材料性能良好,吸水率达1 281 g.g-1,对Cu2+的吸附量达到98.93 mg.g-1.Graft polymerization of polyacrylic/attapulgite（PAA/ATP） superabsorbent composite is carried out by using glow discharge electrolysis plasma,in which acrylic acid（AA） and attapulgite（ATP） are used as raw materials,N,N′-methylenebisacrylamide is used as the crosslinking agent.Effects of the discharge voltage,amounts of crosslinking agent,attapulgite,acrylic acid and polymerization temperature on the absorbency are discussed in detail to optimize the synthesis conditions.The resulting product is characterized by Fourier transform infrared spectroscopy （FT-IR）, thermogravimetric analysis （TGA）, scanning electron microscopy（SEM）and atomic absorption spectrophotometer（AAS）. The result shows that superabsorbent has higher water absorbency which reaches 1 281 g·g^-1 for distilled water. The adsorption capacity of Cu^2＋ is 98.93 mg·g^-1.

关 键 词：辉光放电电解等离子体 超强吸水复合材料 丙烯酸(AA) 凹凸棒土(ATP) 

分 类 号：O646.9[理学—物理化学] O647.33[理学—化学]