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有机硅-聚氨酯互穿网络致密膜对氯烃污染物的分离

Separation of Chlorine-Containing Organic Pollutants by Silicone-Polyurethane Interpenetrating Network Dense Membranes
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摘要 油墨在材料包装中应用广泛,但溶剂型油墨在使用过程中存在着1,2-二氯乙烷(DCE)等挥发性有机化合物(VOCs)释放污染环境和损害人体健康的问题。在油墨生产过程中,使用分离膜可有效除去VOCs,以实现材料的绿色环保。以六甲基二硅氧烷(MM)作为封端剂,γ-甲基丙烯酰氧丙基三甲氧基硅氧烷(KH570)和正硅酸乙酯(TEOS)通过水解缩合得到有机硅树脂(MTQ);利用异佛尔酮二异氰酸酯(IPDI)、羟丙基聚二甲基硅氧烷和丙烯酸羟乙酯(HEA)制备有机硅改性聚氨酯丙烯酸酯(SiPUA);再通过紫外光固化合成了MTQ-SiPUA复合物,利用该复合物制备了新型互穿网络致密膜,并通过红外光谱、X射线衍射和热重分析对互穿网络致密膜的结构和性能进行了表征。结果发现,MTQ-SiPUA-32.5%互穿网络致密膜具有优异的热稳定性和力学性能,对1.33%二氯甲烷(DCM)、0.84%DCE和0.44%1,1,2-三氯乙烷(TCE)具有稳定的渗透通量,分别为0.161,0.140,0.0715 kg/(m^(2)·h),对应的选择性分别为952.5、2012.9和13255.8。 Inks are widely used in material packaging,but solvent-based inks have the problem of polluting the environment and damaging human health with the release of volatile organic compounds(VOCs),such as 1,2-dichloroethane(DCE)in the process of usage.The use of separation membranes in the ink production process could effectively remove VOCs to generate green materials.Hexamethyldisiloxane(MM)was used as a capping agent,with γ-methacryloxy propyltrimethoxy siloxane(KH570)and ethyl orthosilicate(TEOS)by hydrolytic condensation to obtain organosilicone resin(MTQ).Silicone modified polyurethane resin(SiPUA)was prepared by isophorone diisocyanate(IPDI),hydroxypropyl polydimethylsiloxane and 2-hydroxyethyl acrylate(HEA),and then MTQ-SiPUA complex was synthesized by UV curing,and a novel interpenetrating network dense membranes was prepared using this complex.The structure and property of interpenetrating network dense membranes were characterized by infrared spectroscopy,X-ray diffraction and thermogravimetry.The MTQ-SiPUA-32.5%interpenetrating network dense membranes has excellent thermal stability and mechanical properties,with stable permeate fluxes to 1.33%dichloromethane(DCM),0.84%DCE,and 0.44%1,1,2-trichloroethane(TCE),with 0.161,0.140,and 0.0715 kg/(m^(2)·h)respectively,corresponding to selectivity of 952.5,2012.9 and 13255.8 respectively.
作者 周琛凯 马梦旭 王洋洋 叶鹏 夏敏 ZHOU Chenkai;MA Mengxu;WANG Yangyang;YE Peng;XIA Min(College of Chemistry and Chemical Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处 《包装学报》 2024年第4期43-54,共12页 Packaging Journal
基金 国家自然科学基金资助项目(51473148,21673208) 浙江省自然科学基金资助项目(LGG19E030009,NGF18B070005)。
关键词 互穿网络 渗透分离 挥发性有机化合物 分离膜 光固化 interpenetrating network osmotic separation volatile organic compound separation membrane light curing
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