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Reinforcement of wood flour/HDPE composite with a copolyester of p ‐hydroxy benzoic acid and 2‐hydroxy‐6‐naphthoic acid
Author(s) -
Hao Xiaolong,
Zhou Haiyang,
Wang Qingwen,
Wang Haigang,
Song Yongming,
Xie Yanjun
Publication year - 2019
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.47338
Subject(s) - copolyester , high density polyethylene , materials science , composite material , composite number , toughness , ultimate tensile strength , flexural strength , polyethylene , polyester
Various contents of copolyester of p ‐hydroxy benzoic acid and 2‐hydroxy‐6‐naphthoic acid (HBA/HNA) were compounded with high‐density polyethylene (HDPE). The reinforcing effect on the properties of the resulting wood/HDPE composites was determined. The results showed that incorporating HBA/HNA copolyester led to an increase by 340 and 30% in the impact strength of blends and composites, respectively. Improved toughness was also evidenced by the rough impact fractured surface observed by scanning electron microscope. HBA/HNA copolyester had a positive effect on both tensile and flexural properties in blends and composites. The presence of HBA/HNA copolyester enhanced the crystallization and melting temperature, though it did not change the crystal structure of the blends or composites. The dynamic mechanical property conformed with static property. These findings demonstrated that the incorporation of low amounts of HBA/HNA copolyester can substantially reinforce the wood flour/HDPE composites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47338.