Hydrolyzable and bio-based polyester/nano-hydroxyapatite nanocomposites: Structure and properties

Hydrolyzable and bio-based poly(DHCA-co-HDA) (PDH)/nano-hydroxyapatite (n-HA) nanocomposites were fabricated by polycondensation of 3,4-dihydroxycinnamic acid (DHCA) and 10-hydroxydecanoic acid (HDA) with various amount of n-HA. The structure of nanocomposites was characterized by FT-IR. DSC results...

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Bibliographic Details
Published in:Polymer degradation and stability 2013-09, Vol.98 (9), p.1790-1795
Main Authors: Dong, Weifu, Ren, Jingjiao, Shi, Dongjian, Ma, Piming, Li, Xiao, Duan, Fang, Ni, Zhongbin, Chen, Mingqing
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Degradation
Differential scanning calorimetry
Elongation
Exact sciences and technology
Forms of application and semi-finished materials
Fourier transform infrared spectroscopy
Hydrolysable polyester
Hydrolysis
Hydrolysis rate
Hydrophilicity
Hydroxyapatite
microstructure
Nanocomposites
Nanomaterials
nanoparticles
Nanostructure
Polymer industry, paints, wood
scanning electron microscopy
Technology of polymers
Tensile strength
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Summary:Hydrolyzable and bio-based poly(DHCA-co-HDA) (PDH)/nano-hydroxyapatite (n-HA) nanocomposites were fabricated by polycondensation of 3,4-dihydroxycinnamic acid (DHCA) and 10-hydroxydecanoic acid (HDA) with various amount of n-HA. The structure of nanocomposites was characterized by FT-IR. DSC results indicated that the Tgs of the nanocomposites were improved with increasing n-HA content. The SEM micromorphology revealed that n-HA nano-particles were well dispersed in PDH, which was due to the good compatibility between n-HA and PDH. With addition of n-HA in PDH, the tensile strength of nanocomposites prominently enhanced, however the elongation at break reduced. The presence of n-HA increased the hydrophilicity and hydrolysis rate of PDH/n-HA nanocomposites. Moreover, the hydrophilicity and degradation rate of nanocomposites can be altered through varying the content of n-HA.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2013.05.015