n-Hydroxyapatite/PCL-Pluronic-PCL Nanocomposites for Tissue Engineering. Part 2: Thermal and Tensile Study.
In this work a series of nano-hydroxyapatite/poly(ε-caprolactone)-Pluronic-poly(ε-caprolactone) (n-HA/PCFC) nanocomposites has been prepared. Thermal properties of the nanocomposites are studied by thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). The TGA/DTG results reveal that thermal stability of n-HA/PCFC nanocomposites is improved by incorporation of n-HA into polymer matrix, and the thermo-degradation temperature increased slightly with increasing HA loading. DSC results show that the glass transition temperature (T g) changed by the addition of n-HA. The mechanical properties of the nanocomposites are investigated by tensile testing. The morphology for tensile-fractured surfaces of nanocomposites is observed by scanning electron microscopy. The effect of n-HA contents of nanocomposites on tensile strength and morphology is also discussed.
Fu
Shaozhi
S
a State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P. R. China.
Guo
Gang
G
Wang
Xinlong
X
Zhou
Liangxue
L
Gong
Changyang
C
Luo
Feng
F
Zhao
Xia
X
Wei
Yuquan
Y
Qian
Zhiyong
Z
D002152:Calorimetry, Differential Scanning; D017886:Durapatite / Q000737:chemistry*; D055119:Elastic Modulus; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D020442:Poloxamer / Q000737:chemistry*; D011091:Polyesters / Q000737:chemistry*; D013696:Temperature; D013718:Tensile Strength; D013818:Thermogravimetry; D023822:Tissue Engineering
D011091:Polyesters; D020442:Poloxamer; C016240:polycaprolactone; D017886:Durapatite