Poly(para-dioxanone)/inorganic particle composites as a novel biomaterial.
In this work, poly(para-dioxanone) (PPDO) was mixed with 1% (by weight) calcium carbonate (CaCO(3)), beta-tricalcium phosphate (beta-TCP), or calcium sulphate dihydrate (CSD) by solution co-precipitation. Samples were compression molded into bars using a platen-vulcanizing press. The morphology, thermal and mechanical properties, and crystalline structure of the composites were investigated using differential scanning calorimetry, polarized optical microscopy, scanning electron microscopy, and X-ray diffraction. All results suggest that three types of inorganic particle in this system promote the crystallinity of PPDO and act as an effective nucleating agent: the relative degree of crystallinity of PPDO increased from 30.74% to 100%, and the crystallization temperature of PPDO was increased by 18 degrees C. On the other hand, the mechanical properties of PPDO were changed by the presence of inorganic particles: the tensile strength of PPDO/CSD increased by 11.46%.
Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China.
Wei
W
Bai
Dongliang
D
Chen
Zhiping
Z
Zhang
Qing
Q
Li
Dujuan
D
Zhang
Chengdong
C
Xiong
D001672:Biocompatible Materials / Q000737:chemistry*; D002119:Calcium Carbonate / Q000737:chemistry*; D002130:Calcium Phosphates / Q000737:chemistry*; D002133:Calcium Sulfate / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning / Q000379:methods; D004146:Dioxanes / Q000737:chemistry*; D007287:Inorganic Chemicals; D008855:Microscopy, Electron, Scanning / Q000379:methods; D011108:Polymers / Q000737:chemistry; D011208:Powders; D013314:Stress, Mechanical; D013696:Temperature; D013718:Tensile Strength; D014961:X-Ray Diffraction
D001672:Biocompatible Materials; D002130:Calcium Phosphates; D004146:Dioxanes; D007287:Inorganic Chemicals; D011108:Polymers; D011208:Powders; C485817:beta-tricalcium phosphate; D002119:Calcium Carbonate; C059814:4-dioxanone; D002133:Calcium Sulfate