Styrene Conversion Modeling and Estimation of Polydispersity Index
In this study, the kinetics of free radical polymerization of styrene initiated by benzoyl peroxide in polar solvent are described. A model was developed based on set of elementary reactions by mass balance of the chemical species and method of moment analysis. The set of modeled equations were...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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National University of Sciences and Technology, Islamabad
2015-07-01
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| Series: | NUST Journal of Engineering Sciences |
| Online Access: | https://journals.nust.edu.pk/index.php/njes/article/view/132 |
| _version_ | 1797860867148087296 |
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| author | Rasheed Uthman Owolabi Mohammed Awwaal Usman John Abiola Kehinde |
| author_facet | Rasheed Uthman Owolabi Mohammed Awwaal Usman John Abiola Kehinde |
| author_sort | Rasheed Uthman Owolabi |
| collection | DOAJ |
| description |
In this study, the kinetics of free radical polymerization of styrene initiated by benzoyl peroxide in polar solvent are described. A model was developed based on set of elementary reactions by mass balance of the chemical species and method of moment analysis. The set of modeled equations were solved analytically using the Garg et al (G-model) approach for the estimation of polystyrene average properties such as weight and number average molecular weights and polydispersity which were found to vary with reaction conditions and styrene monomer conversion. Our earlier reported styrene monomer conversion model was improved upon by the incorporation of the Trommsdoff Norrish effect . The modified conversion model was found to give better prediction.
Key words: Kinetics, radical polymerization, G-model, polydispersity, method of moment, Trommsdoff Norrish effect.
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| first_indexed | 2024-04-09T21:52:53Z |
| format | Article |
| id | doaj.art-2d42fe07783a4ecb92fb1a354b691e9c |
| institution | Directory Open Access Journal |
| issn | 2070-9900 2411-6319 |
| language | English |
| last_indexed | 2024-04-09T21:52:53Z |
| publishDate | 2015-07-01 |
| publisher | National University of Sciences and Technology, Islamabad |
| record_format | Article |
| series | NUST Journal of Engineering Sciences |
| spelling | doaj.art-2d42fe07783a4ecb92fb1a354b691e9c2023-03-24T11:39:42ZengNational University of Sciences and Technology, IslamabadNUST Journal of Engineering Sciences2070-99002411-63192015-07-017110.24949/njes.v7i1.132Styrene Conversion Modeling and Estimation of Polydispersity IndexRasheed Uthman Owolabi0Mohammed Awwaal Usman1John Abiola Kehinde2university of lagosuniversity of lagos Nigeriauniversity of lagos Nigeria In this study, the kinetics of free radical polymerization of styrene initiated by benzoyl peroxide in polar solvent are described. A model was developed based on set of elementary reactions by mass balance of the chemical species and method of moment analysis. The set of modeled equations were solved analytically using the Garg et al (G-model) approach for the estimation of polystyrene average properties such as weight and number average molecular weights and polydispersity which were found to vary with reaction conditions and styrene monomer conversion. Our earlier reported styrene monomer conversion model was improved upon by the incorporation of the Trommsdoff Norrish effect . The modified conversion model was found to give better prediction. Key words: Kinetics, radical polymerization, G-model, polydispersity, method of moment, Trommsdoff Norrish effect. https://journals.nust.edu.pk/index.php/njes/article/view/132 |
| spellingShingle | Rasheed Uthman Owolabi Mohammed Awwaal Usman John Abiola Kehinde Styrene Conversion Modeling and Estimation of Polydispersity Index NUST Journal of Engineering Sciences |
| title | Styrene Conversion Modeling and Estimation of Polydispersity Index |
| title_full | Styrene Conversion Modeling and Estimation of Polydispersity Index |
| title_fullStr | Styrene Conversion Modeling and Estimation of Polydispersity Index |
| title_full_unstemmed | Styrene Conversion Modeling and Estimation of Polydispersity Index |
| title_short | Styrene Conversion Modeling and Estimation of Polydispersity Index |
| title_sort | styrene conversion modeling and estimation of polydispersity index |
| url | https://journals.nust.edu.pk/index.php/njes/article/view/132 |
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