Page 100 - 《精细化工》2022年第7期

第 39 卷第 7 期 精 细 化 工 Vol.39, No.7
2022 年 7 月 FINE CHEMICALS July 2022

功能材料
PVC/OHA/D2EHPA 基膜增强型聚合物

包容膜的制备及性能评价

李 晨 1,2 ，贾 悦 1,2* ，吕晓龙 1,2 ，陈华艳 1,2

（1. 省部共建分离膜与膜过程国家重点实验室，天津 300387；2. 天津工业大学 材料科学与工程学院，
天津 300387）

摘要：为解决聚合物包容膜（PIM）传输效率低的问题，制备了一种以聚氯乙烯（PVC）为基体，N-羟基正
辛酰胺（OHA）和二(2-乙基己基)磷酸酯（D2EHPA）为固、液载体的基膜增强型 PIM。OHA 作为固体载
体固定于基膜孔道内，利用其与 D2EHPA 的协同作用实现高效传质。对制备的基膜增强型 PIM 进行了 SEM、
EDS、FTIR、XPS 表征，对其传质性能进行了考察。结果表明，铸膜液组分为 22% OHA+17% D2EHPA+61%
PVC（百分数均为质量分数）的基膜增强型 PIM（M-3 膜）对质量浓度为 50 mg/L 的 ZnSO 4 （pH=5.6 乙酸
缓冲溶液配制）的 10 h 回收效果最佳，萃取率和反萃率分别为 59.86%和 51.10%。5 个周期的运行实验中，M-3
2
膜的初始传质通量为 587.36 mg/(m ·h)，约是仅包含液相萃取剂 PIM（M-1 膜）初始传质通量〔312.64
2
mg/(m ·h)〕的 2 倍。5 个循环周期结束后，M-3 膜的传质通量仍高于仅包含液相萃取剂 PIM 初始传质通量。
关键词：萃取；聚合物包容膜；N-羟基正辛酰胺；二(2-乙基己基)磷酸酯；锌离子；功能材料
中图分类号：TQ028.3 文献标识码：A 文章编号：1003-5214 (2022) 07-1386-07

Preparation and performance evaluation of PVC/OHA/D2EHPA
matrix reinforced polymer inclusion membranes

1,2
1,2
1,2
LI Chen , JIA Yue 1,2* , LYU Xiaolong , CHEN Huayan
（1. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin 300387, China; 2. School of
Material Science and Engineering, Tiangong University, Tianjin 300387, China）
Abstract: A novel matrix reinforced polymer inclusion membrane (PIM) was prepared using polyvinyl
chloride(PVC) as polymer matrix, N-hydroxy n-octanamide (OHA) and bis(2-ethylhexyl) phosphate
(D2EHPA) as solid and liquid carriers for more efficient mass transfer. As a solid carrier immobilized in the
pores of PVC matrix, OHA synergizing with D2EHPA were major contributors for improved mass transfer
efficiency. The mass transfer performance of matrix enhanced PIM was evaluated following its
characterization by SEM, EDS, FTIR, XPS. The results showed that the matrix enhanced PIM (M-3
membrane), prepared by casting solution of 22% OHA+17% D2EHPA+61% PVC (mass fraction,the same
2+
below), exhibited most effective Zn recovery from ZnSO 4 with initial mass concentration of 50 mg/L by
a 59.86% extraction rate and 51.10% stripping rate in a 10-hour operation span. The initial mass transfer
2
2
flux of M-3 membrane was 587.36 mg/(m ·h), approximately twice that [312.64 mg/(m ·h)] of PIM with
only liquid carrier. Moreover, the mass transfer flux of M-3 membrane was higher than the initial mass
transfer flux of PIM with only liquid extraction agent even after being recycled 5 times.
Key words: extraction; polymer inclusion membrane; N-hydroxy n-octanamide; bis(2-ethylhexyl) phosphate;
zinc ions; functional materials

收稿日期：2022-03-08; 定用日期：2022-04-11; DOI: 10.13550/j.jxhg.20220199
基金项目：国家自然科学基金项目（21776216）；山东省自然科学重点基金项目（ZR2019LFG007）
作者简介：李 晨（1996—），男，硕士生，E-mail：pioneer97@163.com。联系人：贾 悦（1977—），女，博士，副研究员，E-mail：
jiayue@tiangong.edu.cn。