NDLI: Aqueous compatible boron nitride nanosheets for high-performance hydrogels

Content Provider	Royal Society of Chemistry (RSC)
Author	Sun, Ya-Ping Meng, Yuan Cao, Liu Lu, Fushen Liu, Jiahui Chen, Jijie Hu, Xiaozhen He, Qiuju
Copyright Year	2016
Abstract	Hexagonal boron nitride nanosheets (BNNSs) possess ultimate thermal and chemical stabilities and mechanical strengths. However, the unmodified BNNSs are hydrophobic and insoluble in water, which hinders their use in many technological areas requiring aqueous compatibility. In this work, h-BN was treated with molten citric acid to produce aqueous dispersible boron nitride sheets (ca-BNNSs). The resultant ca-BNNSs were used to fabricate ca-BNNS/polyacrylamide (i.e., BNNS2.5/PAAm) nanocomposite hydrogels, targeting high water retentivity and flexibility. The BNNS2.5/PAAm hydrogel (initially swollen in water) largely remained swollen (water content ∼94 wt%) even after one-year storage under ambient conditions. Importantly, the swollen BNNS2.5/PAAm hydrogel (water content ∼95 wt%) was highly flexible. Its elongation and compressive strength exceeded 10 000% and 8 MPa at 97% strain, respectively. Moreover, the aforementioned hydrogel recovered upon the removal of compression force, without obvious damage. The substantially improved water retentivity and flexibility revealed that BNNSs can serve as a promising new platform in the development of high-performance hydrogels.
Starting Page	4260
Ending Page	4266
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	7
Journal	Nanoscale
DOI	10.1039/c5nr07578e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Polyacrylamide Boron nitride Nanocomposite Compressive strength Nitride Hydrophobe Remanence Gel
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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