The kninetics of acid-catalyzed acetalization and ketalization of poly(viny1 alcohol) (PVA) were systematically studied in completely homogeneous media with carefully selected solvents. Thus the acetalization reaction was run in water with six aldehydes [RICHO (R, = H, CH3, CZH5, n-C3H7, i-C3H7, CIC
11B n.m.r. study on the reaction of poly(vinyl alcohol) with boric acid
โ Scribed by Mitsuhiro Shibayama; Masahiro Sato; Yoshiharu Kimura; Hiroshi Fujiwara; Shunji Nomura
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 434 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0032-3861
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The gel of poly(vinyl alcohol) polymer with boric acid, added as a crosslinking agent, was made with a mixture of dimethyl sulfoxide and water. The thermal and dynamic modulus properties of poly(vinyl alcohol) gel were measured by a differential scanning calorimeter and a dynamic mechanical thermoan
A kinetic study was carried out on the acetalization reaction of 1,3-butanediol, as a model compound for poly(vinyl alcohol) (PVA), in water, under acidic conditions. Since these equilibrium constants of ketalization reaction of 1,3-butanediol and ethylene glycol are so small, the kinetic parameters
SY NOPSlS