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作 者:胡灯 李琼[1] 赵彦生[1] 贾智信 师海岗 陈小玲[1]
机构地区:[1]太原理工大学化学化工学院,太原山西030024
出 处:《高分子材料科学与工程》2016年第10期30-35,共6页Polymer Materials Science & Engineering
基 金:国家自然科学基金青年基金资助项目(21304066);山西省科技攻关项目(20100311117)
摘 要:以接枝γ-氨丙基三乙氧基硅烷(KH550)的聚琥珀酰亚胺(KPSI)、丙烯酸(AAc)和丙烯酰胺(AM)为原料,过硫酸钾(KPS)为引发剂,N,N’-亚甲基双丙烯酰胺(MBA)为交联剂,采用一步法在水体系中合成了改性聚天冬氨酸/聚(丙烯酸-丙烯酰胺)互穿网络吸水性树脂(KPAsp/P(AAc-AM)IPNAP)。探讨了组成对吸液性能的影响,当KPSI和AAc-AM质量比为1∶2,AM和AAc-AM质量比为1∶5时,IPNAP在去离子水和生理盐水中的溶胀倍率分别为713.5 g/g和145.4g/g。研究了吸水性树脂在不同介质中的溶胀行为,结果表明IPNAP对p H、温度、盐都表现出显著的敏感性。对吸水性树脂进行了傅里叶变换红外光谱、扫描电镜和热失重分析表征,表明制得的IPNAP是由KPAsp和P(AAc-AM)相互贯穿而成,第二网络的引入明显改善了树脂的孔道结构,且IPNAP比KPAsp具有更好的热稳定性。Modified poly( aspartic acid) / poly( Acrylic acid-acrylamide) interpenetrating network absorbent resin( IPNAP) based on polysuccinimide grafted with γ-aminpropyltriethoxysilane( KH550)( KPSI),acrylic acid( AAc)and acrylamide( AM) as raw materials,potassium persulfate( KPS) as free radical initiator,N,N'- methylenebisacrylamide( MBA) as crosslinker,was synthesized by a simple one-step method in an aqueous system. Effects of composition on the absorbing properties were investigated and when the mass ratio of modified polysuccinimide( KPSI) to AAc-AM is1∶ 2,AM to AAc-AM is 1∶ 5,swelling ratios of IPNAP prepared in distilled water and physiological saline reaches713. 5 g / g and 145. 4 g / g,respectively. The results of swelling behaviors in various mediums show that IPNAP has remarkable temperature-,pH-,and salt- sensitivities. The structure of the resin prepared was studied by Fourier transform infrared spectroscopy( FT-IR),scanning electron microscopy( SEM) and thermogravimetric analysis( TGA). Results indicate that IPNAP prepared is composed of modified poly( aspartic acid)( KPAap) and P( AAc-AM),the incorporation of P( AAc-AM) significantly improves the pore structure of the resin,and IPNAP has better thermal stability than KPAsp.
关 键 词:聚天冬氨酸 聚(丙烯酸-丙烯酰胺) 互穿网络 吸水性树脂 敏感性
分 类 号:TQ316.6[化学工程—高聚物工业]
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