| Ultrasonic degradation of poly(methyl methacrylate-co-alkyl acrylate) copolymers. | |
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MedLine Citation:
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PMID: 19775925 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The copolymers, poly(methyl methacrylate-co-methyl acrylate) (PMMAMA), poly(methyl methacrylate-co-ethyl acrylate) (PMMAEA) and poly(methyl methacrylate-co-butyl acrylate) (PMMABA), of different compositions were synthesized and characterized. The effect of alkyl acrylate content, alkyl group substituents and solvents on the ultrasonic degradation of these copolymers was studied. A model based on continuous distribution kinetics was used to study the kinetics of degradation. The rate coefficients were obtained by fitting the experimental data with the model. The linear dependence of the rate coefficients on the logarithm of the vapor pressure of the solvent indicated that vapor pressure is the crucial parameter that controls the degradation process. The rate of degradation increases with an increase in the alkyl acrylate content. At any particular copolymer composition, the rate of degradation follows the order: PMMAMA>PMMAEA>PMMABA. It was observed that the degradation rate coefficient varies linearly with the mole percentage of the alkyl acrylate in the copolymer. |
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Authors:
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Vinod Kumar Konaganti; Giridhar Madras |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-08-31 |
Journal Detail:
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Title: Ultrasonics sonochemistry Volume: 17 ISSN: 1873-2828 ISO Abbreviation: Ultrason Sonochem Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2009-11-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9433356 Medline TA: Ultrason Sonochem Country: Netherlands |
Other Details:
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Languages: eng Pagination: 403-8 Citation Subset: IM |
Affiliation:
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Department of Chemical Engineering, Indian Institute of Science, Bangalore, India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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