Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties
Demulsifiers are considered the key materials for oil/water separation. Various works in recent years have shown that demulsifiers with polyoxypropylen epolyoxyethylene branched structures possess better demulsification effects. In this work, inspired by the chemical structure of demulsifiers, a nov...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/3/1282 |
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| author | Mengmeng Zhang Mingxia Wang Junwei Chen Linfang Dong Yuqin Tian Zhenyu Cui Jianxin Li Benqiao He Feng Yan |
| author_facet | Mengmeng Zhang Mingxia Wang Junwei Chen Linfang Dong Yuqin Tian Zhenyu Cui Jianxin Li Benqiao He Feng Yan |
| author_sort | Mengmeng Zhang |
| collection | DOAJ |
| description | Demulsifiers are considered the key materials for oil/water separation. Various works in recent years have shown that demulsifiers with polyoxypropylen epolyoxyethylene branched structures possess better demulsification effects. In this work, inspired by the chemical structure of demulsifiers, a novel superhydrophilic/underwater superoleophobic membrane modified with a polyoxypropylene polyoxyethylene block polymer was fabricated for enhanced separation of O/W emulsion. First, a typical polyoxypropylene polyoxyethylene triblock polymer (Pluronic F127) was grafted onto the poly styrene-maleic anhydride (SMA). Then, the Pluronic F127-grafted SMA (abbreviated as F127@SMA) was blended with polyvinylidene fluoride (PVDF) for the preparation of the F127@SMA/PVDF ultrafiltration membrane. The obtained F127@SMA/PVDF ultrafiltration membrane displayed superhydrophilic/underwater superoleophobic properties, with a water contact angle of 0° and an underwater oil contact angle (UOCA) higher than 150° for various oils. Moreover, it had excellent separation efficiency for SDS-stabilized emulsions, even when the oil being emulsified was crude oil. The oil removal efficiency was greater than 99.1%, and the flux was up to 272.4 L·m<sup>−2</sup>·h<sup>−1</sup>. Most importantly, the proposed F127@SMA/PVDF membrane also exhibited outstanding reusability and long-term stability. Its UOCA remained higher than 150° in harsh acidic, alkaline, and high-salt circumstances. Overall, the present work proposed an environmentally friendly and convenient approach for the development of practical oil/water separation membranes. |
| first_indexed | 2024-03-11T09:33:40Z |
| format | Article |
| id | doaj.art-b7d4845688dc421184888e05ff0db06f |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T09:33:40Z |
| publishDate | 2023-01-01 |
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| record_format | Article |
| series | Molecules |
| spelling | doaj.art-b7d4845688dc421184888e05ff0db06f2023-11-16T17:30:14ZengMDPI AGMolecules1420-30492023-01-01283128210.3390/molecules28031282Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation PropertiesMengmeng Zhang0Mingxia Wang1Junwei Chen2Linfang Dong3Yuqin Tian4Zhenyu Cui5Jianxin Li6Benqiao He7Feng Yan8State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaNingbo Fengcheng Advanced Energy Materials Research Institute Co., Ltd., Ningbo 315500, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaState Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, ChinaDemulsifiers are considered the key materials for oil/water separation. Various works in recent years have shown that demulsifiers with polyoxypropylen epolyoxyethylene branched structures possess better demulsification effects. In this work, inspired by the chemical structure of demulsifiers, a novel superhydrophilic/underwater superoleophobic membrane modified with a polyoxypropylene polyoxyethylene block polymer was fabricated for enhanced separation of O/W emulsion. First, a typical polyoxypropylene polyoxyethylene triblock polymer (Pluronic F127) was grafted onto the poly styrene-maleic anhydride (SMA). Then, the Pluronic F127-grafted SMA (abbreviated as F127@SMA) was blended with polyvinylidene fluoride (PVDF) for the preparation of the F127@SMA/PVDF ultrafiltration membrane. The obtained F127@SMA/PVDF ultrafiltration membrane displayed superhydrophilic/underwater superoleophobic properties, with a water contact angle of 0° and an underwater oil contact angle (UOCA) higher than 150° for various oils. Moreover, it had excellent separation efficiency for SDS-stabilized emulsions, even when the oil being emulsified was crude oil. The oil removal efficiency was greater than 99.1%, and the flux was up to 272.4 L·m<sup>−2</sup>·h<sup>−1</sup>. Most importantly, the proposed F127@SMA/PVDF membrane also exhibited outstanding reusability and long-term stability. Its UOCA remained higher than 150° in harsh acidic, alkaline, and high-salt circumstances. Overall, the present work proposed an environmentally friendly and convenient approach for the development of practical oil/water separation membranes.https://www.mdpi.com/1420-3049/28/3/1282Pluronic F127PVDF ultrafiltration membraneoil/water separation |
| spellingShingle | Mengmeng Zhang Mingxia Wang Junwei Chen Linfang Dong Yuqin Tian Zhenyu Cui Jianxin Li Benqiao He Feng Yan Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties Molecules Pluronic F127 PVDF ultrafiltration membrane oil/water separation |
| title | Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties |
| title_full | Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties |
| title_fullStr | Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties |
| title_full_unstemmed | Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties |
| title_short | Demulsifier-Inspired Superhydrophilic/Underwater Superoleophobic Membrane Modified with Polyoxypropylene Polyoxyethylene Block Polymer for Enhanced Oil/Water Separation Properties |
| title_sort | demulsifier inspired superhydrophilic underwater superoleophobic membrane modified with polyoxypropylene polyoxyethylene block polymer for enhanced oil water separation properties |
| topic | Pluronic F127 PVDF ultrafiltration membrane oil/water separation |
| url | https://www.mdpi.com/1420-3049/28/3/1282 |
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