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Polymers
Volume 17
Issue 9
10.3390/polym17091158
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Article

Preparation of Polypyrrole/Montmorillonite/Polypropylene Composite Membranes and Investigation of Their Adsorption Performance for Methyl Orange and Pb2+

by
Baoxin Wang
1,
Binbin Xu
2,
Gaofeng Chen
2,
Chaozhong Wang
2,
Yang Liu
2,
Yang Bai
2,
Mengge Li
3 and
Longgui Peng
3,*
1
China Energy Group Guoshen Company, Beijing 100101, China
2
Guoneng Baoqing Coal Power and Chemical Co., Ltd., Shuangyashan 155600, China
3
School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
*
Author to whom correspondence should be addressed.
Polymers 2025, 17(9), 1158; https://doi.org/10.3390/polym17091158
Submission received: 2 March 2025 / Revised: 12 April 2025 / Accepted: 22 April 2025 / Published: 24 April 2025
(This article belongs to the Special Issue Functional Polymers and Novel Applications)
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Abstract

This study investigates the efficient and recyclable use of polymer-based membrane materials in wastewater treatment, focusing on calcium-based montmorillonite (Ca-MMT), pyrrole (Py), and polypropylene (PP). Through sodium activation, organic modification, pyrrole intercalation, and in situ polymerization, polypyrrole/montmorillonite (PPy/MMT) was synthesized. A polypyrrole/montmorillonite/polypropylene composite membrane (PPy/MMT/PP) was then fabricated using melt compression and coating techniques for pollutant adsorption. The modification of montmorillonite by PPy was examined, alongside the morphology, composition, and structure of PPy/MMT/PP. The membrane’s adsorption performance for methyl orange and Pb2⁺ was evaluated, with a focus on cyclic adsorption. The results showed that PPy increased the interlayer spacing of montmorillonite from 1.23 nm to 1.74 nm and enhanced its specific surface area by 99.424 m2/g. The composite membrane exhibited improved wettability and adsorption capacity, achieving removal rates of 95.98% for methyl orange and 88.48% for Pb2⁺, following pseudo-second-order kinetics. The membrane demonstrated recyclability, maintaining efficient adsorption/desorption over three cycles. This work provides valuable insights and technical support for sustainable wastewater treatment using polymer-based membranes.
Keywords: montmorillonite; polypyrrole; polypropylene; polymer matrix membrane materials; wastewater treatment montmorillonite; polypyrrole; polypropylene; polymer matrix membrane materials; wastewater treatment

Share and Cite

MDPI and ACS Style

Wang, B.; Xu, B.; Chen, G.; Wang, C.; Liu, Y.; Bai, Y.; Li, M.; Peng, L. Preparation of Polypyrrole/Montmorillonite/Polypropylene Composite Membranes and Investigation of Their Adsorption Performance for Methyl Orange and Pb2+. Polymers 2025, 17, 1158. https://doi.org/10.3390/polym17091158

AMA Style

Wang B, Xu B, Chen G, Wang C, Liu Y, Bai Y, Li M, Peng L. Preparation of Polypyrrole/Montmorillonite/Polypropylene Composite Membranes and Investigation of Their Adsorption Performance for Methyl Orange and Pb2+. Polymers. 2025; 17(9):1158. https://doi.org/10.3390/polym17091158

Chicago/Turabian Style

Wang, Baoxin, Binbin Xu, Gaofeng Chen, Chaozhong Wang, Yang Liu, Yang Bai, Mengge Li, and Longgui Peng. 2025. "Preparation of Polypyrrole/Montmorillonite/Polypropylene Composite Membranes and Investigation of Their Adsorption Performance for Methyl Orange and Pb2+" Polymers 17, no. 9: 1158. https://doi.org/10.3390/polym17091158

APA Style

Wang, B., Xu, B., Chen, G., Wang, C., Liu, Y., Bai, Y., Li, M., & Peng, L. (2025). Preparation of Polypyrrole/Montmorillonite/Polypropylene Composite Membranes and Investigation of Their Adsorption Performance for Methyl Orange and Pb2+. Polymers, 17(9), 1158. https://doi.org/10.3390/polym17091158

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