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https://hdl.handle.net/11147/4745
Title: | Drying of Semicrystalline Polymers: Mathematical Modeling and Experimental Characterization of Poly(vinyl Alcohol) Films | Authors: | Wong, Sim-Siong Alsoy Altınkaya, Sacide Mallapragada, Surya K. |
Keywords: | Drying Poly(vinyl alcohol) Semicrystalline polymers Polyvinyl alcohols Crystalline materials Crystallization |
Publisher: | Elsevier Ltd. | Source: | Wong, S.-S., Alsoy, S., and Mallapragada, S. K (2004). Drying of semicrystalline polymers: Mathematical modeling and experimental characterization of poly(vinyl alcohol) films. Polymer, 45(15), 5151-5161. doi:10.1016/j.polymer.2004.05.037 | Abstract: | A mathematical model was developed to predict the drying mechanism of semicrystalline polymers involving multiple solvents. Since drying of semicrystalline polymers can be accompanied by changes in polymer degree of crystallinity, the model integrates crystallization kinetics and the Vrentas-Duda diffusion model to provide a better understanding of the mechanism. The model considers the effect of external conditions such as temperature, film shrinkage and diffusion and evaporation of multiple solvents during drying. Poly(vinyl alcohol) (PVA)/water/methanol was chosen as a test system. The drying kinetics of PVA films swollen in water and methanol were investigated using gravimetric techniques. The model predicts that higher temperatures, lower film thicknesses and lower methanol to water ratios increase the drying rate. The model predictions were compared with experimental data and showed good agreement. | URI: | http://doi.org/10.1016/j.polymer.2004.05.037 http://hdl.handle.net/11147/4745 |
ISSN: | 0032-3861 0032-3861 |
Appears in Collections: | Chemical Engineering / Kimya Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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