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Dual‐bonding structured ternary composite film of poly(vinyl alcohol)–boric acid–nanodiamond
Author(s) -
Li Yina,
Xu Xiangyang,
Zhao Hongye,
Wei Shanshan,
Lu Qinghua,
Dai Lei,
Yang Lin
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45449
Subject(s) - vinyl alcohol , materials science , nanodiamond , composite number , boric acid , composite material , thermal stability , microstructure , polymer , nanocomposite , ternary operation , chemical engineering , polymer chemistry , diamond , organic chemistry , chemistry , computer science , engineering , programming language
ABSTRACT Ternary composite films of poly(vinyl alcohol) (PVA), boric acid (BA), and detonation nanodiamond (DND) were prepared by aqueous solution method. Because of its excellent mechanical/thermal properties and low friction coefficient, DND is expected to offer PVA film superior performance if the puzzles of particle agglomeration in polymer matrix and fragile interface reaction between DND and PVA can be settled. BA was used as a crosslinking agent to form a strong network structure between DND and PVA. Investigation on microstructure of PVA/BA/DND films and bonding mechanisms therein shows that BA, DND, and PVA may crosslink by oxo‐bridges owing to the interaction of hydroxyl groups. The Young's modulus ( E ) of composite films was enhanced by nearly 3.3 times with only 0.8 wt % DND loading, and the antiwear, thermal stability, and waterproof properties can be significantly improved after the crosslinking. Meanwhile, the transparency of composite films can be well preserved even with large DND content. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45449.