Poly(para-dioxanone)/inorganic particle composites as a novel biomaterial

✍ Scribed by Wei Bai; Dongliang Chen; Zhiping Zhang; Qing Li; Dujuan Zhang; Chengdong Xiong

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 260 KB
• Volume: 90B
• Category: Article
• ISSN: 1552-4973
• DOI: 10.1002/jbm.b.31367

✦ Synopsis

Abstract

In this work, poly(para‐dioxanone) (PPDO) was mixed with 1% (by weight) calcium carbonate (CaCO~3~), beta‐tricalcium phosphate (β‐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°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%. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 2009