Solution polymerization of N-vinylcaprolactam in 1,4-dioxane. Kinetic dependence on temperature, monomer, and initiator concentrations
The kinetics of the solution free radical polymerization of N-vinylcaprolactam, in 1,4-dioxane and under various polymerization conditions was studied. Azobisisobutyronitrile and 3-mercaptopropionic acid were used as initiator and as chain transfer agent (CTA), respectively. The influence of monomer...
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| Veröffentlicht in: | Journal of applied polymer science 2010-10, Vol.118 (1), p.229-240 |
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| creator | Medeiros, Simone F Barboza, Jayne C.S Ré, Maria I Giudici, Reinaldo Santos, Amilton M |
| description | The kinetics of the solution free radical polymerization of N-vinylcaprolactam, in 1,4-dioxane and under various polymerization conditions was studied. Azobisisobutyronitrile and 3-mercaptopropionic acid were used as initiator and as chain transfer agent (CTA), respectively. The influence of monomer and initiator concentrations and polymerization temperature on the rate of polymerizations (Rp) was investigated. In general, high conversions were obtained. The order with respect to initiator was consistent with the classical kinetic rate equation, while the order with respect to the monomer was greater than unity. The overall activation energy of 53.6 kJ mol⁻¹ was obtained in the temperature range 60-80 °C. The decreasing of the absolute molecular weights when increasing the CTA concentration was confirmed by GPC/SEC/LALS analyses. It was confirmed by UV-visible analyses the effect of molecular weights on the lower critical solution temperature of the polymers. It was also verified that the addition of the CTA influenced the kinetic of the polymerizations. |
| doi_str_mv | 10.1002/app.32204 |
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Kinetic dependence on temperature, monomer, and initiator concentrations</title><source>Wiley Online Library Journals Frontfile Complete</source><creator>Medeiros, Simone F ; Barboza, Jayne C.S ; Ré, Maria I ; Giudici, Reinaldo ; Santos, Amilton M</creator><creatorcontrib>Medeiros, Simone F ; Barboza, Jayne C.S ; Ré, Maria I ; Giudici, Reinaldo ; Santos, Amilton M</creatorcontrib><description>The kinetics of the solution free radical polymerization of N-vinylcaprolactam, in 1,4-dioxane and under various polymerization conditions was studied. Azobisisobutyronitrile and 3-mercaptopropionic acid were used as initiator and as chain transfer agent (CTA), respectively. The influence of monomer and initiator concentrations and polymerization temperature on the rate of polymerizations (Rp) was investigated. In general, high conversions were obtained. The order with respect to initiator was consistent with the classical kinetic rate equation, while the order with respect to the monomer was greater than unity. The overall activation energy of 53.6 kJ mol⁻¹ was obtained in the temperature range 60-80 °C. The decreasing of the absolute molecular weights when increasing the CTA concentration was confirmed by GPC/SEC/LALS analyses. It was confirmed by UV-visible analyses the effect of molecular weights on the lower critical solution temperature of the polymers. It was also verified that the addition of the CTA influenced the kinetic of the polymerizations.</description><identifier>ISSN: 0021-8995</identifier><identifier>ISSN: 1097-4628</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.32204</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>absolute molecular weights ; Applied sciences ; Chain transfer ; Conversion ; Exact sciences and technology ; Initiators ; kinetics ; LCST ; Mathematical analysis ; Molecular weight ; Monomers ; N-vinylcaprolactam ; Organic polymers ; Physicochemistry of polymers ; Polymerization ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; solution polymerization ; Unity</subject><ispartof>Journal of applied polymer science, 2010-10, Vol.118 (1), p.229-240</ispartof><rights>Copyright © 2010 Wiley Periodicals, Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3934-4882c5b0e175e17e225537093cd9f0e1b7564bd996769d8a2b9e66b0b2fe3e293</citedby><cites>FETCH-LOGICAL-c3934-4882c5b0e175e17e225537093cd9f0e1b7564bd996769d8a2b9e66b0b2fe3e293</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.32204$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.32204$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23092509$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Medeiros, Simone F</creatorcontrib><creatorcontrib>Barboza, Jayne C.S</creatorcontrib><creatorcontrib>Ré, Maria I</creatorcontrib><creatorcontrib>Giudici, Reinaldo</creatorcontrib><creatorcontrib>Santos, Amilton M</creatorcontrib><title>Solution polymerization of N-vinylcaprolactam in 1,4-dioxane. Kinetic dependence on temperature, monomer, and initiator concentrations</title><title>Journal of applied polymer science</title><addtitle>J. Appl. Polym. Sci</addtitle><description>The kinetics of the solution free radical polymerization of N-vinylcaprolactam, in 1,4-dioxane and under various polymerization conditions was studied. Azobisisobutyronitrile and 3-mercaptopropionic acid were used as initiator and as chain transfer agent (CTA), respectively. The influence of monomer and initiator concentrations and polymerization temperature on the rate of polymerizations (Rp) was investigated. In general, high conversions were obtained. The order with respect to initiator was consistent with the classical kinetic rate equation, while the order with respect to the monomer was greater than unity. The overall activation energy of 53.6 kJ mol⁻¹ was obtained in the temperature range 60-80 °C. The decreasing of the absolute molecular weights when increasing the CTA concentration was confirmed by GPC/SEC/LALS analyses. It was confirmed by UV-visible analyses the effect of molecular weights on the lower critical solution temperature of the polymers. It was also verified that the addition of the CTA influenced the kinetic of the polymerizations.</description><subject>absolute molecular weights</subject><subject>Applied sciences</subject><subject>Chain transfer</subject><subject>Conversion</subject><subject>Exact sciences and technology</subject><subject>Initiators</subject><subject>kinetics</subject><subject>LCST</subject><subject>Mathematical analysis</subject><subject>Molecular weight</subject><subject>Monomers</subject><subject>N-vinylcaprolactam</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polymerization</subject><subject>Preparation, kinetics, thermodynamics, mechanism and catalysts</subject><subject>solution polymerization</subject><subject>Unity</subject><issn>0021-8995</issn><issn>1097-4628</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp1kM1u1DAUhSMEEkNhwRPgDUJIk6l_YideViM6RQylUqmQ2FiOc4MMiZ3aHuj0AfrcuJPSHQvL8vV3zr33FMVrglcEY3qsp2nFKMXVk2JBsKzLStDmabHIf6RspOTPixcx_sSYEI7Fori79MMuWe_Q5If9CMHe6sPT9-i8_G3dfjB6Cn7QJukRWYfIsio762-0gxX6ZB0ka1AHE7gOnAGUtQnGCYJOuwBLNHrns-8SaddlvU1WJx-Q8Rl2KRy6xZfFs14PEV493EfF1emHr-uzcvtl83F9si0Nk6wqq6ahhrcYSM3zAUo5ZzWWzHSyz9W25qJqOylFLWTXaNpKEKLFLe2BAZXsqHg3--aVrncQkxptNDAMeRu_i0piIgTHtcjk-5k0wccYoFdTsKMOe0Wwuo9a5ajVIerMvn1w1dHooQ_aGRsfBZRhSTm-7348c3_sAPv_G6qTi4t_zuWssDHBzaNCh19K1Kzm6tv5Rq0x-Xy62Z6p75l_M_O99kr_CHmKq0uKCcOkEQ2rKvYXboinAA</recordid><startdate>20101005</startdate><enddate>20101005</enddate><creator>Medeiros, Simone F</creator><creator>Barboza, Jayne C.S</creator><creator>Ré, Maria I</creator><creator>Giudici, Reinaldo</creator><creator>Santos, Amilton M</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20101005</creationdate><title>Solution polymerization of N-vinylcaprolactam in 1,4-dioxane. 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| subjects | absolute molecular weights Applied sciences Chain transfer Conversion Exact sciences and technology Initiators kinetics LCST Mathematical analysis Molecular weight Monomers N-vinylcaprolactam Organic polymers Physicochemistry of polymers Polymerization Preparation, kinetics, thermodynamics, mechanism and catalysts solution polymerization Unity |
| title | Solution polymerization of N-vinylcaprolactam in 1,4-dioxane. Kinetic dependence on temperature, monomer, and initiator concentrations |
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