Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution
An experimental of kinetics investigation of the solution free radical polymerization of isopropylacrylamide (IPAM) initiated with potassium persulfate (PPS) was conducted. The reactions were carried out at constant temperature of 60 °C in distilled water under unstirred and inert conditions. Using...
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University of Baghdad, College of Science for Women
2023-10-01
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| Series: | مجلة بغداد للعلوم |
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| Online Access: | https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7523 |
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| author | Ameen Hadi Mohammed Hala Rahman Noormohamad Mansor Bin Ahmad |
| author_facet | Ameen Hadi Mohammed Hala Rahman Noormohamad Mansor Bin Ahmad |
| author_sort | Ameen Hadi Mohammed |
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An experimental of kinetics investigation of the solution free radical polymerization of isopropylacrylamide (IPAM) initiated with potassium persulfate (PPS) was conducted. The reactions were carried out at constant temperature of 60 °C in distilled water under unstirred and inert conditions. Using the well-known conversion vs. time technique, the effects of initiator and monomer concentration on the rate of polymerization (Rp) were investigated over a wide range. Under the conditions of our work, the orders 0.38 and 1.68 were found with respect to initiator and monomer, respectively. However, the rate of polymerization (Rp) is not straight forwardly corresponding monomer concentration. The value 46.11 kJ mol1 was determined as the overall activation energy of polymerization, which is not satisfactory with the value of most thermal initiated monomers. Rp for IPAM in dimethyl formamide, dimethyl sulfoxide, and distilled water using PPS as initiator at 60 oC, was checked. An increase in solvent polarity has slightly increased (Rp) value. The effect of using different concentrations of PPS 0.001, 0.002, 0.003 and 0.004 mol dm-3, on the average degree of polymerization (DPn), was also studied, based on viscosity results obtained using distilled water at 20 oC. The results revealed that an increase in the initiator concentration has an effect in lowering (DP) values.
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| format | Article |
| id | doaj-art-3bdff42aa6ee467cb3dc174e631607e0 |
| institution | Kabale University |
| issn | 2078-8665 2411-7986 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | University of Baghdad, College of Science for Women |
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| series | مجلة بغداد للعلوم |
| spelling | doaj-art-3bdff42aa6ee467cb3dc174e631607e02025-08-20T03:33:14ZengUniversity of Baghdad, College of Science for Womenمجلة بغداد للعلوم2078-86652411-79862023-10-01205(Suppl.)10.21123/bsj.2023.7523Kinetic Study of Polymerization Isopropylacrylamide in Aqueous SolutionAmeen Hadi Mohammed0Hala Rahman Noormohamad 1Mansor Bin Ahmad 2Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad, Iraq.Department of Chemistry, College of Science for Women, University of Baghdad, Baghdad, Iraq.Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia An experimental of kinetics investigation of the solution free radical polymerization of isopropylacrylamide (IPAM) initiated with potassium persulfate (PPS) was conducted. The reactions were carried out at constant temperature of 60 °C in distilled water under unstirred and inert conditions. Using the well-known conversion vs. time technique, the effects of initiator and monomer concentration on the rate of polymerization (Rp) were investigated over a wide range. Under the conditions of our work, the orders 0.38 and 1.68 were found with respect to initiator and monomer, respectively. However, the rate of polymerization (Rp) is not straight forwardly corresponding monomer concentration. The value 46.11 kJ mol1 was determined as the overall activation energy of polymerization, which is not satisfactory with the value of most thermal initiated monomers. Rp for IPAM in dimethyl formamide, dimethyl sulfoxide, and distilled water using PPS as initiator at 60 oC, was checked. An increase in solvent polarity has slightly increased (Rp) value. The effect of using different concentrations of PPS 0.001, 0.002, 0.003 and 0.004 mol dm-3, on the average degree of polymerization (DPn), was also studied, based on viscosity results obtained using distilled water at 20 oC. The results revealed that an increase in the initiator concentration has an effect in lowering (DP) values. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7523Isopropylacrylamide, radical polymerization, kinetic aspects, polymerization degree |
| spellingShingle | Ameen Hadi Mohammed Hala Rahman Noormohamad Mansor Bin Ahmad Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution مجلة بغداد للعلوم Isopropylacrylamide, radical polymerization, kinetic aspects, polymerization degree |
| title | Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution |
| title_full | Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution |
| title_fullStr | Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution |
| title_full_unstemmed | Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution |
| title_short | Kinetic Study of Polymerization Isopropylacrylamide in Aqueous Solution |
| title_sort | kinetic study of polymerization isopropylacrylamide in aqueous solution |
| topic | Isopropylacrylamide, radical polymerization, kinetic aspects, polymerization degree |
| url | https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7523 |
| work_keys_str_mv | AT ameenhadimohammed kineticstudyofpolymerizationisopropylacrylamideinaqueoussolution AT halarahmannoormohamad kineticstudyofpolymerizationisopropylacrylamideinaqueoussolution AT mansorbinahmad kineticstudyofpolymerizationisopropylacrylamideinaqueoussolution |