Ethanol—continued functional group

Generally, solubility of the solid in the liquid is enhanced if the chemicals have similar functional groups [e.g., poly(vinyl alcohol) and water, which contain OH groups] or similar molecular polarity [e.g., poly(vinyl butyral) and ethanol]. Evaporation rate is an important factor in industrial tape casting where the tape is often cast, dried, peeled off from the carrier film, and rolled up for storage in a continuous operation. Fast drying solvents such as toluene and methyl ethyl... 

Polyvinyl alcohol (PVA) was first prepared by Hermann and Haehnel [12] in 1924 by hydrolyzing polyvinyl acetate in ethanol with potassium hydroxide. PVA is produced commercially from polyvinyl acetate, usually by a continuous process. The acetate groups are hydrolyzed by ester interchange with methanol in the presence of anhydrous sodium methylate or aqueous sodium hydroxide. The physical characteristics and specific functional uses depend on the degree of polymerization and the... 

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