Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance
Thermo-responsive hydrogel is an important smart material. However, its slow thermal response rate limits the scope of its applications. Boron nitride nanosheet-reinforced thermos-responsive hydrogels, which can be controlled by heating, were fabricated by in situ polymerization of N-isopropylacryla...
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doaj-400b2f4c683d4f21afaa2939f08a2f8f2020-11-24T23:58:44ZengMDPI AGMaterials1996-19442018-06-01117106910.3390/ma11071069ma11071069Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive PerformanceShishan Xue0Yuanpeng Wu1Jiemin Wang2Meiling Guo3Dan Liu4Weiwei Lei5School of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, ChinaSchool of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, ChinaInstitute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, VIC 3220, AustraliaSchool of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, ChinaInstitute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, VIC 3220, AustraliaInstitute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, VIC 3220, AustraliaThermo-responsive hydrogel is an important smart material. However, its slow thermal response rate limits the scope of its applications. Boron nitride nanosheet-reinforced thermos-responsive hydrogels, which can be controlled by heating, were fabricated by in situ polymerization of N-isopropylacrylamide in the presence of boron nitride nanosheets. The hydrogels exhibit excellent thermo-responsiveness and much enhanced thermal response rate than that of pure poly(N-isopropylacrylamide) hydrogels. Interestingly, the hydrogels can be driven to move in aqueous solution by heating. Importantly, the composite hydrogel is hydrophilic at a temperature below lower critical solution temperature (LCST), while it is hydrophobic at a temperature above LCST. Therefore, it can be used for quick absorption and release of dyes and oils from water. All these properties demonstrate the potential of hydrogel composites for water purification and treatment.http://www.mdpi.com/1996-1944/11/7/1069thermal-responsivehydrogelboron nitride nanosheetspoly(N-isopropylacrylamide) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shishan Xue Yuanpeng Wu Jiemin Wang Meiling Guo Dan Liu Weiwei Lei |
spellingShingle |
Shishan Xue Yuanpeng Wu Jiemin Wang Meiling Guo Dan Liu Weiwei Lei Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance Materials thermal-responsive hydrogel boron nitride nanosheets poly(N-isopropylacrylamide) |
author_facet |
Shishan Xue Yuanpeng Wu Jiemin Wang Meiling Guo Dan Liu Weiwei Lei |
author_sort |
Shishan Xue |
title |
Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance |
title_short |
Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance |
title_full |
Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance |
title_fullStr |
Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance |
title_full_unstemmed |
Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance |
title_sort |
boron nitride nanosheets/pnipam hydrogels with improved thermo-responsive performance |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2018-06-01 |
description |
Thermo-responsive hydrogel is an important smart material. However, its slow thermal response rate limits the scope of its applications. Boron nitride nanosheet-reinforced thermos-responsive hydrogels, which can be controlled by heating, were fabricated by in situ polymerization of N-isopropylacrylamide in the presence of boron nitride nanosheets. The hydrogels exhibit excellent thermo-responsiveness and much enhanced thermal response rate than that of pure poly(N-isopropylacrylamide) hydrogels. Interestingly, the hydrogels can be driven to move in aqueous solution by heating. Importantly, the composite hydrogel is hydrophilic at a temperature below lower critical solution temperature (LCST), while it is hydrophobic at a temperature above LCST. Therefore, it can be used for quick absorption and release of dyes and oils from water. All these properties demonstrate the potential of hydrogel composites for water purification and treatment. |
topic |
thermal-responsive hydrogel boron nitride nanosheets poly(N-isopropylacrylamide) |
url |
http://www.mdpi.com/1996-1944/11/7/1069 |
work_keys_str_mv |
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_version_ |
1725450018326839296 |