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Preparation of syndiotactic poly(vinyl alcohol) embolic particles with radiopacity

Preparation of syndiotactic poly(vinyl alcohol) embolic particles with radiopacity Abstract A suspension copolymerization in the presence of aqueous radiopaque nanoparticles was used to prepare poly(vinyl pivalate/vinyl acetate) (P(VPi/VAc)) nanocomposite microspheres for embolic materials. To generate nanocomposite microspheres with radiopacity, various radiopaque nanoparticles (TiO2, Ti, Ag, Au and Pt) were added to P(VPi/VAc) copolymer. The P(VPi/VAc)/nanoparticles microspheres with radiopacity were then saponified in alkali solution, leading to syndiotactic poly(vinyl alcohol) (s-PVA)/nanoparticles microspheres with radiopacity of which degree of saponification (DS) was up to 99.8 %. The saponification time of P(VPi/VAc)/nanoparticles microspheres decreased with increasing the amount of nanoparticles. Computed tomography (CT) analysis revealed that s-PVA/TiO2 and s-PVA/Ti microspheres had good radiopacity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fibers and Polymers Springer Journals

Preparation of syndiotactic poly(vinyl alcohol) embolic particles with radiopacity

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References (27)

Publisher
Springer Journals
Copyright
2014 The Korean Fiber Society and Springer Science+Business Media Dordrecht
ISSN
1229-9197
eISSN
1875-0052
DOI
10.1007/s12221-014-0472-9
Publisher site
See Article on Publisher Site

Abstract

Abstract A suspension copolymerization in the presence of aqueous radiopaque nanoparticles was used to prepare poly(vinyl pivalate/vinyl acetate) (P(VPi/VAc)) nanocomposite microspheres for embolic materials. To generate nanocomposite microspheres with radiopacity, various radiopaque nanoparticles (TiO2, Ti, Ag, Au and Pt) were added to P(VPi/VAc) copolymer. The P(VPi/VAc)/nanoparticles microspheres with radiopacity were then saponified in alkali solution, leading to syndiotactic poly(vinyl alcohol) (s-PVA)/nanoparticles microspheres with radiopacity of which degree of saponification (DS) was up to 99.8 %. The saponification time of P(VPi/VAc)/nanoparticles microspheres decreased with increasing the amount of nanoparticles. Computed tomography (CT) analysis revealed that s-PVA/TiO2 and s-PVA/Ti microspheres had good radiopacity.

Journal

Fibers and PolymersSpringer Journals

Published: Mar 1, 2014

Keywords: Polymer Sciences

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