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

Materials

卷:11

Dan Liu¹  Weiwei Lei¹  Jiemin Wang¹  Yuanpeng Wu²  Meiling Guo²  Shishan Xue² 

[1] Institute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, VIC 3220, Australia;

[2] School of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, China;

关键词: thermal-responsive;    hydrogel;    boron nitride nanosheets;    poly(N-isopropylacrylamide);   

DOI  :  10.3390/ma11071069

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown