Polypropylene Biocomposites with Boron Nitride and Nanohydroxyapatite Reinforcements

被引:26
作者
Chan, Kai Wang [1 ]
Wong, Hoi Man [2 ]
Yeung, Kelvin Wai Kwok [2 ,3 ]
Tjong, Sie Chin [1 ]
机构
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
[2] Univ Hong Kong, Li Ka Shing Fac Med, Dept Orthoped & Traumatol, Hong Kong, Hong Kong, Peoples R China
[3] Univ Hong Kong, Shenzhen Hosp, Shenzhen Key Lab Innovat Technol Orthoped Trauma, Shenzhen 518053, Peoples R China
基金
中国国家自然科学基金;
关键词
MECHANICAL-PROPERTIES; POLYMER NANOCOMPOSITES; CARBON NANOTUBES; STAINLESS-STEEL; PASSIVE FILM; COMPOSITES; FABRICATION; MORPHOLOGY; NANOFIBER; TOXICITY;
D O I
10.3390/ma8030992
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, we develop binary polypropylene (PP) composites with hexagonal boron nitride (hBN) nanoplatelets and ternary hybrids reinforced with hBN and nanohydroxyapatite (nHA). Filler hybridization is a sound approach to make novel nanocomposites with useful biological and mechanical properties. Tensile test, osteoblastic cell culture and dimethyl thiazolyl diphenyl tetrazolium (MTT) assay were employed to investigate the mechanical performance, bioactivity and biocompatibility of binary PP/hBN and ternary PP/hBN-nHA composites. The purpose is to prepare biocomposite nanomaterials with good mechanical properties and biocompatibility for replacing conventional polymer composites reinforced with large hydroxyapatite microparticles at a high loading of 40 vol%. Tensile test reveals that the elastic modulus of PP composites increases, while tensile elongation decreases with increasing hBN content. Hybridization of hBN with nHA further enhances elastic modulus of PP. The cell culture and MTT assay show that osteoblastic cells attach and proliferate on binary PP/hBN and ternary PP/hBN-20%nHA nanocomposites.
引用
收藏
页码:992 / 1008
页数:17
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