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Synthesis of 5‐sulfosalicylic acid‐intercalated layered double hydroxide and its effects on wood flour/polypropylene composites during accelerated UV weathering
Author(s) -
Peng Yao,
Wang Wen,
Cao Jinzhen,
Huang Yiheng
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.44597
Subject(s) - hydroxide , materials science , sulfosalicylic acid , composite material , thermal stability , polypropylene , gloss (optics) , layered double hydroxides , fourier transform infrared spectroscopy , wood flour , nuclear chemistry , chemical engineering , chemistry , organic chemistry , inorganic chemistry , engineering , coating
In this study, 5‐sulfosalicylic acid (SA) anions have been intercalated into Mg 3 Al‐NO 3 layered double hydroxide (LDH) to synthesize SA‐intercalated Mg 3 Al‐NO 3 ‐LDH (LDH‐SA) by ion‐exchange reaction. Then, the effects of LDH, SA, and LDH‐SA on the photostability of wood flour/polypropylene (WF/PP) composites during accelerated ultraviolet (UV) weathering were investigated. The surface color, surface gloss, and mechanical properties of the composites during weathering were tested, accompanied by characterizations using SEM, ATR‐FTIR, and TG. The results showed that (1) SA anions completely replaced theNO 3 −anions in LDH and the thermal stability of LDH‐SA was considerably enhanced; (2) composites with LDH or LDH‐SA exhibited less color change, fewer surface cracks, better thermal stability, and less losses of mechanical properties than the control group; (3) LDH‐SA showed a long‐term efficiency and alleviated the photo‐oxidation of WF/PP composites successfully; (4) LDH‐SA blocked UV light by physical shield effect of the layer sheets, as well as the chemical absorbability of the interlayer anions. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44597.