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Open AccessArticle

Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance

1
School of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
2
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
3
Institute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, VIC 3220, Australia
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(7), 1069; https://doi.org/10.3390/ma11071069
Received: 2 June 2018 / Revised: 18 June 2018 / Accepted: 20 June 2018 / Published: 24 June 2018
(This article belongs to the Special Issue Hybrid Materials: New Synthetic Methods)
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. View Full-Text
Keywords: thermal-responsive; hydrogel; boron nitride nanosheets; poly(N-isopropylacrylamide) thermal-responsive; hydrogel; boron nitride nanosheets; poly(N-isopropylacrylamide)
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MDPI and ACS Style

Xue, S.; Wu, Y.; Wang, J.; Guo, M.; Liu, D.; Lei, W. Boron Nitride Nanosheets/PNIPAM Hydrogels with Improved Thermo-Responsive Performance. Materials 2018, 11, 1069.

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