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面向烟草提取物分离的复合纳滤膜的制备及性能研究

作者：刘春波¹，²，徐瑞松²，蒋薇¹，李勇¹，司晓喜¹，杨继¹，朱瑞芝¹，张凤梅¹，唐石云¹，杨明权¹，张冉²，侯蒙杰²，李琳²，王同华²

单位： 1. 云南中烟工业有限责任公司，云南省烟草化学重点实验室，昆明 650231; 2. 大连理工大学化工学院精细化工国家重点实验室，大连市膜与膜过程重点实验室，大连 116024

关键词：聚间苯二甲酰间苯二胺；纳滤膜；界面聚合；膜分离；烟草致香组分分离浓缩

DOI号： 10.16159/j.cnki.issn1007-8924.2024.06.014

分类号： TQ028.8

出版年,卷(期):页码： 2024,44(6):115-121

摘要：

以聚间苯二甲酰间苯二胺（PMIA）超滤膜为基膜，通过界面聚合反应在基膜的表面复合聚酰胺（PA）分离层，制备得到PA/PMIA复合纳滤膜，用于精细分离烟草提取物中致香组分.当哌嗪（PIP）质量分数为0.5%，均苯三甲酰氯（TMC）质量浓度为0.15 g/L，界面聚合反应时间控制在30 s时，所制备PA/PMIA复合纳滤膜的性能最佳，纯水渗透通量高达63.8 L/(m2·h)，对葡萄糖的截留率为91.52%，截留分子量为180.采用此PA/PMIA复合纳滤膜对烟草提取物进行过滤分离，过滤液中烟碱和生物碱的浓度大幅降低，实现了烟草致香组分的分离浓缩.采用超滤-纳滤的二级过滤方式精细分离烟草提取物，得到致香组分的种类更多，生物碱和烟碱的浓度更高.

PA/PMIA composite nanofiltration membranes were prepared for fine separation of aromatic components in tobacco extract, in which the polyamide (PA) layer was composited on the surface of poly(m-phenylene isophthalamide) (PMIA) ultrafiltration membranes through interfacial polymerization reaction. When the concentration of piperazine (PIP) in aqueous phase was 0.5 %, the concentration of trimesoyl chloride (TMC) in oil phase was 0.15%, and the interfacial reaction time was controlled at 30s, the performance of PA/PMIA composite nanofiltration membrane prepared was optimal. It exhibited a pure water flux of up to 63.8 L/(m2·h), a glucose rejection rate of 91.52%, and a cutoff molecular weight of 180. The PA/PMIA composite nanofiltration membranes were used to filter and separate tobacco extract, and the concentration of nicotine and alkaloid in the filtrate was greatly reduced, achieving the separation and concentration of aroma components in tobacco. Additionally, the application of a two-stage filtration process combining ultrafiltration and nanofiltration allowed for a more precise separation of tobacco extracts, resulting in a greater variety of aroma components and higher concentrations of alkaloids and nicotine.

基金项目：

云南省“兴滇英才支持计划”产业创新人才项目和云南中烟科技项目（2021JC04）

作者简介：

刘春波（1978-），男，内蒙古赤峰人，副研究员，博士，研究方向：纳米材料与膜材料.

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