naa a22 4500 510821146 CHVBK 20180411083532.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11814-013-0019-6 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0019-6 Polymerization of vinyl pivalate in supercritical carbon dioxide and the saponification for the preparation of syndiotacticity-rich poly(vinyl alcohol) [Elektronische Daten] [Quang Pham, Van Nguyen, Yuvaraj Haldorai, Jae-Jin Shim] This paper reports a successful free-radical dispersion polymerization of vinyl pivalate in supercritical carbon dioxide using poly(1H,1H-dihydroperfluorooctyl acrylate) and dimethylsiloxane-g-pyrrolidone carboxylic acid (Monasil PCA) as stabilizers. In both cases, no spherical polymer particles were obtained, which might be due to the high solubility of poly(vinyl pivalate) (PVPi) in supercritical carbon dioxide. The effects of the reaction time, pressure, temperature, monomer loading, stabilizer concentration and initiator concentration on the polymer yield and molecular weight of PVPi were also investigated. In addition, the formation of poly(vinyl alcohol) via saponification of the resulting PVPi is described. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Poly(vinyl pivalate) nationallicence Poly(vinyl alcohol) nationallicence Supercritical Carbon Dioxide nationallicence Dispersion Polymerization nationallicence Pham Quang School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut Nguyen Van School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut Haldorai Yuvaraj School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut Shim Jae-Jin School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1153-1161 0256-1115 30:5<1153 2013 30 11814 https://doi.org/10.1007/s11814-013-0019-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0019-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pham Quang School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut NATIONALLICENCE 700 1- Nguyen Van School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut NATIONALLICENCE 700 1- Haldorai Yuvaraj School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut NATIONALLICENCE 700 1- Shim Jae-Jin School of Chemical Engineering, Yeungnam University, 214-1, Dae-dong, 712-749, Gyeongbuk, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1153-1161 0256-1115 30:5<1153 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer