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- W2362715915 abstract "Nano-hydroxyapatite(n-HA)/poly((1,2-propanediol-sebacate)-citrate)(1,2-PPSC) composites were synthesized by condensation of 1,2-propanediol,sebacic acid,citric acid and n-HA.The structure was characterized by FTIR and 13C NMR;the micromorphology of n-HA and the dispersion property of n-HA in n-HA/1,2-PPSC composites were characterized by SEM and TEM.The results show that the chemical reactions between n-HA and sebacic acid never occur,n-HA and 1,2-PPSC matrix do not generate obviously chemical bond,and n-HA disperses uniformly in 1,2-PPSC matrix.DMA shows that there is a good interfacial bonding between n-HA and 1,2-PPSC matrix.DSC and DMA show that n-HA decreases the chemical cross-link density of the composites,so the Tg of the composites decreases with increasing of mass fractions of n-HA.N-HA improves the hydrophilicity,decreases water absorption and reduces the degradation rates of n-HA/1,2-PPSC composites.Compared to the matrix,the mechanical properties of the composites are improved obviously;when the mass fraction of n-HA is 20%,the modulus of n-HA/1,2-PPSC composites increases 11.4 times,the tensile strength of n-HA/1,2-PPSC composites increases 8.2 times,while the elongation at break of n-HA/1,2-PPSC composites is basically unchanged." @default.
- W2362715915 created "2016-06-24" @default.
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- W2362715915 date "2009-01-01" @default.
- W2362715915 modified "2023-09-26" @default.
- W2362715915 title "Preparation and investigation of a biodegradable nano-hydroxyapatite/polyester elastomer composites" @default.
- W2362715915 hasPublicationYear "2009" @default.
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