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|Title:||Synthesis and hydrolysis of β-cyanoethyl ether of poly(vinyl alcohol)|
|Citation:||Li, X.,Goh, S.H.,Lai, Y.H.,Deng, S.-M. (1999). Synthesis and hydrolysis of β-cyanoethyl ether of poly(vinyl alcohol). Journal of Applied Polymer Science 73 (13) : 2771-2777. ScholarBank@NUS Repository. https://doi.org/10.1002/(SICI)1097-4628(19990923)73:133.0.CO;2-#|
|Abstract:||Poly(vinyl alcohol) (PVA) was cyanoethylated by reaction with acrylonitrile in the presence of sodium hydroxide and quaternary ammonium halide. Quaternary ammonium halide, acting as a phase transfer catalyst, increases the degree of substitution (DS) of PVA. The DS also increased with increasing acrylonitrile concentration. Cyanoethylation of PVA up to 98% can be achieved under optimum conditions. The hydrolysis of β-cyanoethyl ether of PVA (CN-PVA) was studied. The rate of hydrolysis was affected by the sodium hydroxide concentration and the reaction temperature. The rheological properties of aqueous solution of hydrolysis product of CN-PVA were determined at different temperatures, and the flow activation energy was calculated.|
|Source Title:||Journal of Applied Polymer Science|
|Appears in Collections:||Staff Publications|
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