Abstract
Designing of multilayer coatings of poly(styrene)-tetrahydrofuran and poly(methyl methacrylate)-tetrahydrofuran has been studied. Multilayers were prepared by layer-by-layer and simultaneous methods. Several binary polymeric coatings of poly(styrene)-tetrahydrofuran and poly(methyl methacrylate)-tetrahydrofuran systems have been dried under quiescent drying conditions. Gravimetric analyses were performed using an analytical weighing balance. The initial amount of polymer was kept constant in both solution coatings. Coating which is likely to go through the glass transition temperature should be applied on the bottom side in order to minimize the residual solvent. For instance, residual solvent content is high in multilayer coating having poly(methyl methacrylate)-tetrahydrofuran coating on the top and poly(styrene)-tetrahydrofuran coating on the bottom, as compared to multilayer coatings having poly(styrene)-tetrahydrofuran on the top of poly(methyl methacrylate)-tetrahydrofuran coating.
ACKNOWLEDGMENTS
The authors are very thankful to Prof. P. K. Singh, Head, Cement Research and Development Centre, JUET, Guna, India. The authors also want to thank Mr. Sundeep Kumar, Faculty in Charge, Cement Research and Development Centre, Laboratory, JUET, Guna, India.
Notes
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