Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance
This study illustrated the potential applications of thermoresponsive poly(<i>N</i>-isopropylacrylamide) (PNIPAm) grafted nylon membranes with different grafting yields and grafting architecture. The thermoresponsive gating performance at temperatures below and above the lower critical s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/3/497 |
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| author | Todsapol Kajornprai Putita Katesripongsa Sang Yong Nam Zuratul Ain Abdul Hamid Yupaporn Ruksakulpiwat Nitinat Suppakarn Tatiya Trongsatitkul |
| author_facet | Todsapol Kajornprai Putita Katesripongsa Sang Yong Nam Zuratul Ain Abdul Hamid Yupaporn Ruksakulpiwat Nitinat Suppakarn Tatiya Trongsatitkul |
| author_sort | Todsapol Kajornprai |
| collection | DOAJ |
| description | This study illustrated the potential applications of thermoresponsive poly(<i>N</i>-isopropylacrylamide) (PNIPAm) grafted nylon membranes with different grafting yields and grafting architecture. The thermoresponsive gating performance at temperatures below and above the lower critical solution temperature (LCST) of PNIPAm (32 °C) were demonstrated. The linear PNIPAm-grafted nylon membrane exhibited a sharp response over the temperature range 20–40 °C. The grafting yield of 25.5% and 21.9%, for linear and crosslinked PNIPAm respectively, exhibited highest thermoresponsive gating function for water flux and had a stable and repeatable “open-closed” switching function over 5 cycle operations. An excellent oil/water separation was obtained at T < 32 °C, at which the hydrophilic behavior was observed. The linear PNIPAm-grafted nylon membrane with 35% grafting yield had the highest separation efficiency of 99.7%, while PNIPAm structures were found to be independent of the separation efficiency. In addition, the membranes with thermoresponsive gas permeability were successfully achieved. The O<sub>2</sub> and CO<sub>2</sub> transmission rates through the PNIPAm-grafted nylon membranes decreased when the grafting yield increased, showing the better gas barrier property. The permeability ratio of CO<sub>2</sub> to O<sub>2</sub> transmission rates of both PNIPAm architectures at 25 °C and 35 °C were around 0.85 for low grafting yields, and approximately 1 for high grafting yields. Ultimately, this study demonstrated the possibility of using these thermoresponsive smart membranes in various applications. |
| first_indexed | 2024-03-11T09:29:49Z |
| format | Article |
| id | doaj.art-d37d3f51845945349676fba6d18c1a77 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T09:29:49Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-d37d3f51845945349676fba6d18c1a772023-11-16T17:46:22ZengMDPI AGPolymers2073-43602023-01-0115349710.3390/polym15030497Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating PerformanceTodsapol Kajornprai0Putita Katesripongsa1Sang Yong Nam2Zuratul Ain Abdul Hamid3Yupaporn Ruksakulpiwat4Nitinat Suppakarn5Tatiya Trongsatitkul6Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandSchool of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandDepartment of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of KoreaSchool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, MalaysiaResearch Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandResearch Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandResearch Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandThis study illustrated the potential applications of thermoresponsive poly(<i>N</i>-isopropylacrylamide) (PNIPAm) grafted nylon membranes with different grafting yields and grafting architecture. The thermoresponsive gating performance at temperatures below and above the lower critical solution temperature (LCST) of PNIPAm (32 °C) were demonstrated. The linear PNIPAm-grafted nylon membrane exhibited a sharp response over the temperature range 20–40 °C. The grafting yield of 25.5% and 21.9%, for linear and crosslinked PNIPAm respectively, exhibited highest thermoresponsive gating function for water flux and had a stable and repeatable “open-closed” switching function over 5 cycle operations. An excellent oil/water separation was obtained at T < 32 °C, at which the hydrophilic behavior was observed. The linear PNIPAm-grafted nylon membrane with 35% grafting yield had the highest separation efficiency of 99.7%, while PNIPAm structures were found to be independent of the separation efficiency. In addition, the membranes with thermoresponsive gas permeability were successfully achieved. The O<sub>2</sub> and CO<sub>2</sub> transmission rates through the PNIPAm-grafted nylon membranes decreased when the grafting yield increased, showing the better gas barrier property. The permeability ratio of CO<sub>2</sub> to O<sub>2</sub> transmission rates of both PNIPAm architectures at 25 °C and 35 °C were around 0.85 for low grafting yields, and approximately 1 for high grafting yields. Ultimately, this study demonstrated the possibility of using these thermoresponsive smart membranes in various applications.https://www.mdpi.com/2073-4360/15/3/497nylon membranesmart membranethermoresponsive polymerpoly(<i>N</i>-isopropylacrylamide)water filtrationoil-water separation |
| spellingShingle | Todsapol Kajornprai Putita Katesripongsa Sang Yong Nam Zuratul Ain Abdul Hamid Yupaporn Ruksakulpiwat Nitinat Suppakarn Tatiya Trongsatitkul Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance Polymers nylon membrane smart membrane thermoresponsive polymer poly(<i>N</i>-isopropylacrylamide) water filtration oil-water separation |
| title | Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance |
| title_full | Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance |
| title_fullStr | Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance |
| title_full_unstemmed | Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance |
| title_short | Potential Applications of Thermoresponsive Poly(<i>N</i>-Isoproplacrylamide)-Grafted Nylon Membranes: Effect of Grafting Yield and Architecture on Gating Performance |
| title_sort | potential applications of thermoresponsive poly i n i isoproplacrylamide grafted nylon membranes effect of grafting yield and architecture on gating performance |
| topic | nylon membrane smart membrane thermoresponsive polymer poly(<i>N</i>-isopropylacrylamide) water filtration oil-water separation |
| url | https://www.mdpi.com/2073-4360/15/3/497 |
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