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Yan J, Nie L, Li G, Zhu Y, Gao M, Wu R, Wang B. Axial Crystal Growth Evolution and Crystallization Characteristics of Bi-Continuous Polyamide 66 Membranes Prepared via the Cold Non-Solvent-Induced Phase Separation Technique. Polymers (Basel) 2022; 14:polym14091706. [PMID: 35566874 PMCID: PMC9101189 DOI: 10.3390/polym14091706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 12/10/2022] Open
Abstract
Polyamide 66 microporous membranes were prepared by cold non-solvent-induced phase separation using polyamide 66-formic acid-propylene carbonate as a ternary membrane-forming system. The formed membranes exhibited a special bicontinuous structure consisting of interglued spherical crystals or interlocked bundles of microcrystalline aggregates. The variation of the microporous structure under the influence of preparation conditions, solvent, aging time, and polymer concentration affects the comprehensive performance of the membranes. For example, the cold-induced operation and the use of different membrane-forming solvents contributed to the crystallization of polyamide 66, resulting in an increased contact angle of polyamide 66 membranes, obtaining a high resistance to contamination of up to 73.5%. Moreover, the formed membranes still have high mechanical strength.
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Affiliation(s)
- Jiangyi Yan
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
| | - Lihong Nie
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
| | - Guiliang Li
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
| | - Yuanlu Zhu
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
| | - Ming Gao
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
| | - Ruili Wu
- Sichuan Bureau of National Food and Strategic Reserves Administration, Chongqing 401326, China;
| | - Beifu Wang
- College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China; (J.Y.); (L.N.); (G.L.); (Y.Z.); (M.G.)
- Correspondence:
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Jiang L, Jia Z, Xu X, Chen Y, Peng W, Zhang J, Wang H, Li S, Wen J. Preparation of antimicrobial poly (ethylene-co-vinyl alcohol) membrane by grafting with N-halamine. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Facile formation of symmetric microporous PVDF membranes via vapor-induced phase separation of metastable dopes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sun Z, Yang Z, Wang Z, Li C. The role of pre-evaporation in the preparation process of EVOH ultrafiltration membranes via TIPS. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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