Stereospecific polymerization of vinyl acetate in fluoroalcohols - Synthesis of syndiotactic poly(vinyl alcohol)

被引：25
|
作者：
Yamada, K
Nakano, T
Okamoto, Y
机构：
[1] Nagoya Univ, Dept Appl Chem, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
[2] Nagoya Univ, Joint Res Ctr Precis Polymerizat, Grad Sch Engn,Japan Chem Innovat Inst, Chikusa Ku, Nagoya, Aichi 4648603, Japan
来源：
PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES | 1998年 / 74卷 / 03期
关键词：
poly(vinyl alcohol); radical polymerization; tacticity; vinyl acetate; fluoroalcohol; hydrogen-bond;
D O I：
10.2183/pjab.74.46
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The free-radical polymerization of vinyl acetate (VAc) was carried out in various alcoholic solvents. Fluoroalcohols with a lower pKa and higher bulkiness were effective in enhancing the syndiotactic specificity of the polymerization. The polymerization of VAc in perfluoro-tert-butyl alcohol ((CF3)(3)COH) at -78 degrees C led to a dyad syndiotacticity of 72%, which is the highest value reported for the radical polymerization of vinyl esters. Hydrogen-bonding between the acetyl groups of VAc and polymer and the fluoroalcohol molecule may be responsible for the enhancement of the syndiotactic specific propagation.
引用
收藏
页码：46 / 49
页数：4
相关论文
共 50 条
  • [21] Preparation of poly(vinyl acetate)/clay and poly(vinyl acetate)/poly(vinyl alcohol)/clay microspheres
    Hye Min Jung
    Eun Mi Lee
    Byung Chul Ji
    Sung Ok Sohn
    Han Do Ghim
    Hyunju Cho
    Young A Han
    Jin Hyun Choi
    Jae Deuk Yun
    Jeong Hyun Yeum
    Fibers and Polymers, 2006, 7 : 229 - 234
  • [22] Characterization of grafting in the emulsion polymerization of vinyl acetate using poly(vinyl alcohol) as stabilizer
    Egret, H
    Dimonie, VL
    Sudol, ED
    Klein, A
    El-Aasser, MS
    JOURNAL OF APPLIED POLYMER SCIENCE, 2001, 82 (07) : 1739 - 1747
  • [23] Synthesis, characterization, and properties of poly(vinyl acetate)- and poly(vinyl alcohol)-grafted chitosan
    Radhakumary, C.
    Nair, Prabha D.
    Mathew, Suresh
    Reghunadhan Nair, C.P.
    Journal of Applied Polymer Science, 2007, 104 (03): : 1852 - 1859
  • [24] Synthesis, characterization, and properties of poly(vinyl acetate)- and poly(vinyl alcohol)-grafted chitosan
    Radhakumary, C.
    Nair, Prabha D.
    Mathew, Suresh
    Nair, C. P. Reghunadhan
    JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 104 (03) : 1852 - 1859
  • [25] THERMODYNAMIC PROPERTIES OF POLY(VINYL ALCOHOL) AND POLY(VINYL ALCOHOL VINYL-ACETATE) HYDROGELS
    HORKAY, F
    BURCHARD, W
    GEISSLER, E
    HECHT, AM
    MACROMOLECULES, 1993, 26 (06) : 1296 - 1303
  • [26] NMR SPECTRA OF POLY(VINYL ACETATE) AND POLY(VINYL ALCOHOL)
    RAMEY, KC
    LINI, DC
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER LETTERS, 1967, 5 (1PB): : 39 - &
  • [27] STUDIES OF ALCOHOLYSIS OF POLY (VINYL ACETATE) TO POLY (VINYL ALCOHOL).
    Bravar, M.
    Rolich, J.
    Ban, N.
    Gnjatovic, V.
    1974, (47): : 329 - 334
  • [28] Properties of highly syndiotactic poly(vinyl alcohol)
    Yoshitaka, N
    Nakano, T
    Okamoto, Y
    Gotoh, Y
    Nagura, M
    POLYMER, 2001, 42 (24) : 9679 - 9686
  • [29] Poly(vinyl acetate)/poly(vinyl alcohol)/montmorillonite nanocomposite microspheres prepared by suspension polymerization and saponification
    Jung, Hye Min
    Lee, Eun Mi
    Ji, Byung Chul
    Deng, Yulin
    Yun, Jae Deuk
    Yeum, Jeong Hyun
    COLLOID AND POLYMER SCIENCE, 2007, 285 (06) : 705 - 710
  • [30] Poly(vinyl acetate)/poly(vinyl alcohol)/montmorillonite nanocomposite microspheres prepared by suspension polymerization and saponification
    Hye Min Jung
    Eun Mi Lee
    Byung Chul Ji
    Yulin Deng
    Jae Deuk Yun
    Jeong Hyun Yeum
    Colloid and Polymer Science, 2007, 285 : 705 - 710
12345