In situ generation of biodegradable poly(p-dioxanone) micro-particles by polymerization in supercritical carbon dioxide |
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| Authors: | Tian Qiang Wang Xiu Li Zhao Jian Yuan Hao |
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| Institution: | a State Key Lab of Electronic Films and Integrated Devices, School of Microelectronics and Solid State Electronics University of Electronic Science and Technology of China, Chengdu 610054, China;b Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | Ring-opening suspension polymerization of p-dioxanone (PDO) in supercritical carbon dioxide (scCO2) was investigated in the presence of poly(caprolactone)–perfluropolyether–poly(caprolactone) (PCL–PFPE–PCL). The molecular weight, yield and particle morphology of poly(p-dioxanone) (PPDO) were studied. The stabilizer was effective to stabilize the ring-opening polymerization (ROP) of PDO in scCO2, leading to the formation of resorbable microparticles in a “one pot” procedure. The mean size of PPDO microparticles obtained from suspension polymerizations was sensitive to the rate of agitation and the stabilizer concentration. The method to generate PPDO microparticles has overcome its unprocessable drawback with common organic solvents and provided new product form for biomedical applications. |
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| Keywords: | Biodegradable Poly(p-dioxanone) Polymerization Stabilizer Microparticle |
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