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凹凸棒土杂化粒子改性聚乙烯醇/壳聚糖复合膜的结构与性能研究 被引量:4

Study on the Structure and Properties of PVA/Chitosan Composite Membrane Modified by Attapulgite Hybrid Particles
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摘要 采用表面引发接枝聚合法制备凹凸棒土接枝聚丙烯酰胺杂化粒子(ATP-g-PAAm),以此改性聚乙烯醇/壳聚糖复合膜(PVA/CS)。采用傅里叶红外光谱(FTIR)、差示扫描量热(DSC)、热失重分析(TG)等对三元复合膜(PVA/CS/ATP-g-PAAm)进行了表征,考察了杂化粒子含量对复合膜力学性能、热性能、吸湿率和吸附性能的影响。结果表明,ATP-g-PAAm的加入提高了复合膜的力学性能、结晶度和热稳定性,且能显著提升复合膜对Cu~(2+)的吸附能力。当杂化粒子质量分数为4%时,复合膜的拉伸强度、弹性模量和断裂伸长率分别为62.4 MPa、184.5 MPa和141.3%,对Cu~(2+)的吸附量高达156.5 mg/g。 Attapulgite grafted with polyacrylamide hybrid particles(ATP-g-PAAm)were prepared via surface-initiated graft polymerization and used to modify the polyvinyl alcohol/chitosan composite membrane(PVA/CS).The ternary composite film(PVA/CS/ATP-g-PAAm)was characterized by Fourier transform infrared spectroscopy(FTIR),differential scanning calorimetry(DSC),thermogravimetric analysis(TG),and so on.The effects of hybrid particles contents on the mechanical properties,thermal properties,moisture absorption and adsorption properties of the composite membrane were investigated.The results show that the addition of ATP-g-PAAm could improve the mechanical properties,crystallinity and thermal stability of the composite membrane,and significantly enhance the adsorption capacity for Cu 2+ .When the hybrid particle content is 4%,the tensile strength,elastic modulus and elongation at break of the composite film are 62.4 MPa,184.5 MPa and 141.3%,respectively.And the adsorption capacity of Cu 2+ could achieve 156.5 mg/g.
作者 乔志勇 丁长明 刘慎 张再兴 QIAO Zhi-yong;DING Chang-ming;LIU Shen;ZHANG Zai-xing(Changzhou Vocational Institute of Textile and Garment,Changzhou 213164,China;Changzhou Key Laboratory of Eco-Textile Technology,Changzhou 213164,China;Changzhou Besure New Materials Technology,Co.,Ltd.,Changzhou 213161,China)
出处 《塑料工业》 CAS CSCD 北大核心 2021年第2期53-57,共5页 China Plastics Industry
基金 常州市科技计划资助(CJ20180012) 常州市生态纺织技术重点实验室基金(CM20183003)。
关键词 聚乙烯醇 凹凸棒土 杂化粒子 复合膜 结构与性能 Polyvinyl Alcohol Attapulgite Hybrid Particles Composite Membrane Structure and Properties
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