Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate
Graft polymerization of acrylic acid (AA) and ethyl methacrylate (EMA) onto starch (St) were carried out in aqueous solution using ceric ammonium nitrate (CAN) as redox system under N2 atmosphere. The effect of pH, reaction time, temperature, concentrations of CAN, St, and monomers on the graft yiel...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2006-03-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
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| Online Access: | http://www.ijcce.ac.ir/article_7792_8fa806ab903e193816c51e40de2b88f3.pdf |
| _version_ | 1828786415083716608 |
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| author | Mohammad Taghi Taghizadeh Abbas Mehrdad |
| author_facet | Mohammad Taghi Taghizadeh Abbas Mehrdad |
| author_sort | Mohammad Taghi Taghizadeh |
| collection | DOAJ |
| description | Graft polymerization of acrylic acid (AA) and ethyl methacrylate (EMA) onto starch (St) were carried out in aqueous solution using ceric ammonium nitrate (CAN) as redox system under N2 atmosphere. The effect of pH, reaction time, temperature, concentrations of CAN, St, and monomers on the graft yield was investigated. Monomer reactivity was in the following order: AA>EMA.The kinetics of the graft polymerization of AA and EMA onto starch in same system with CAN was studied by acid-base and boromometric titration, respectively. The rate expressions for graft polymerization are Rg=k[AA]0.92[CAN]0.56[St]0.46 and R/g=k/[EMA]0.92[CAN]0.53[St]0.48 and a suitable mechanism is suggested. The graft copolymers were investigated by FT-IR spectroscopy. The overall activation energy of graft polymerization of AA onto starch was found to be 36.25 kJ.mol-1 within the temperature range 20-40°C, and for graft polymerization of EMA onto starch is found to be 11.88 kJmol-1 within the temperature range 25-45°C. |
| first_indexed | 2024-12-12T00:10:58Z |
| format | Article |
| id | doaj.art-d4f333216b58423e87c9397870cfcb24 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-12T00:10:58Z |
| publishDate | 2006-03-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-d4f333216b58423e87c9397870cfcb242022-12-22T00:44:58ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862006-03-012511127792Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium NitrateMohammad Taghi Taghizadeh0Abbas Mehrdad1Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, I.R. IRANDepartment of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, I.R. IRANGraft polymerization of acrylic acid (AA) and ethyl methacrylate (EMA) onto starch (St) were carried out in aqueous solution using ceric ammonium nitrate (CAN) as redox system under N2 atmosphere. The effect of pH, reaction time, temperature, concentrations of CAN, St, and monomers on the graft yield was investigated. Monomer reactivity was in the following order: AA>EMA.The kinetics of the graft polymerization of AA and EMA onto starch in same system with CAN was studied by acid-base and boromometric titration, respectively. The rate expressions for graft polymerization are Rg=k[AA]0.92[CAN]0.56[St]0.46 and R/g=k/[EMA]0.92[CAN]0.53[St]0.48 and a suitable mechanism is suggested. The graft copolymers were investigated by FT-IR spectroscopy. The overall activation energy of graft polymerization of AA onto starch was found to be 36.25 kJ.mol-1 within the temperature range 20-40°C, and for graft polymerization of EMA onto starch is found to be 11.88 kJmol-1 within the temperature range 25-45°C.http://www.ijcce.ac.ir/article_7792_8fa806ab903e193816c51e40de2b88f3.pdfkineticsstarchacrylic acidethyl methacrylateceric ammonium nitrategraft polymerization |
| spellingShingle | Mohammad Taghi Taghizadeh Abbas Mehrdad Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate Iranian Journal of Chemistry & Chemical Engineering kinetics starch acrylic acid ethyl methacrylate ceric ammonium nitrate graft polymerization |
| title | Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate |
| title_full | Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate |
| title_fullStr | Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate |
| title_full_unstemmed | Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate |
| title_short | Kinetic Study of Graft Polymerization of Acrylic Acid and Ethyl Methacrylate onto Starch by Ceric Ammonium Nitrate |
| title_sort | kinetic study of graft polymerization of acrylic acid and ethyl methacrylate onto starch by ceric ammonium nitrate |
| topic | kinetics starch acrylic acid ethyl methacrylate ceric ammonium nitrate graft polymerization |
| url | http://www.ijcce.ac.ir/article_7792_8fa806ab903e193816c51e40de2b88f3.pdf |
| work_keys_str_mv | AT mohammadtaghitaghizadeh kineticstudyofgraftpolymerizationofacrylicacidandethylmethacrylateontostarchbycericammoniumnitrate AT abbasmehrdad kineticstudyofgraftpolymerizationofacrylicacidandethylmethacrylateontostarchbycericammoniumnitrate |