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http://dx.doi.org/10.7317/pk.2013.37.5.563

Preparation of Syndiotactic Poly(vinyl alcohol) Microfibrils with Radiopaque Inorganic Particles  

Jo, Hye Won (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Cha, Jin Wook (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Han, Sung Soo (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Lee, Joon Seok (Department of Textile Engineering and Technology, Yeungnam University)
Oh, Tae Hwan (Department of Nano, Medical and Polymer Materials, Yeungnam University)
Publication Information
Polymer(Korea) / v.37, no.5, 2013 , pp. 563-570 More about this Journal
Abstract
Poly(vinyl pivalate) (PVPi) was bulk polymerized to make poly(vinyl alcohol) (PVA) microfibrils to apply for polymeric embolization coils replacing metalic coils. Then, syndiotactic PVA (s-PVA) microfibrils having number-average degree of polymerization of 1100 and s-diad content of 60.4% were prepared via saponification of the PVPi with no separate spinning process. To make s-PVA microfibrils with radiopacity, zirconium dioxide ($ZrO_2$) and barium sulfate ($BaSO_4$) were added into s-PVA microfibrils during saponification. The computed tomography (CT) value indicating radiopacity reached up to over 1000 when the amount of $ZrO_2$ and $BaSO_4$ were 12 and 6 wt%, respectively.
Keywords
s-PVA; microfibrils; radiopacity; bulk polymerization; embolic materials;
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