Synthesis of water-soluble syndiotacticity-rich low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification
โ Scribed by Won Seok Lyoo; Jeong Hyun Yeum; Han Do Ghim; Joon-Seok Lee; Byung Chul Ji; Nam Sik Yoon; Jae Boo Ha; Jinwon Lee
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 87 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0021-8995
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Vinyl pivalate (VPi) was polymerized in bulk by ultraviolet-ray initiation at low temperatures using 2,2-azobis(2,4-dimethylvaleronitrile) (ADMVN) and 2,2'-azobis(isobutyronitrile) (AIBN) as photoinitiators. High molecular weight (HMW) poly(vinyl pivalate) (PVPi), having a number-average degree of p
A new method using a simple zone-drawing technique has been suggested for determining the optimum initial concentration of a polymer solution that has suitable macromolecular entanglements. This method was developed to replace the incorrect inherent viscosity-measuring method for syndiotacticity-ric