Mechanical properties of poly(N-isopropyl-acrylamide-co-itaconic acid) hydrogels
Hydrogels of N‐isopropylacrylamide and itaconic acid were synthesized with different monomer ratios and with two crosslinking agent concentrations. The different xerogels were immersed in water and the swelling process was conducted up to equilibrium conditions at two temperatures (22 and 37°C). The...
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Published in: | Journal of applied polymer science 2002-09, Vol.85 (12), p.2540-2545 |
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creator | Quintana, José R. Valderruten, Nora E. Katime, Issa |
description | Hydrogels of N‐isopropylacrylamide and itaconic acid were synthesized with different monomer ratios and with two crosslinking agent concentrations. The different xerogels were immersed in water and the swelling process was conducted up to equilibrium conditions at two temperatures (22 and 37°C). These temperatures are lower and higher than the transition temperature shown by PNIPA hydrogels. The mechanical properties of the different solvated hydrogels were examined by oscillatory shear measurements at 22 and 37°C. The copolymer volume fraction and the elastic storage modulus of the hydrogels decreased as the itaconic acid percentage in the copolymer increased. This behavior was attributed to the higher hydrophilic character of the itaconic acid comonomer. Effective crosslinking density, molar mass between crosslinks, and the polymer–solvent interaction parameter were determined from the experimental values of the elastic storage moduli and the copolymer volume fractions. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2540–2545, 2002 |
doi_str_mv | 10.1002/app.10852 |
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The different xerogels were immersed in water and the swelling process was conducted up to equilibrium conditions at two temperatures (22 and 37°C). These temperatures are lower and higher than the transition temperature shown by PNIPA hydrogels. The mechanical properties of the different solvated hydrogels were examined by oscillatory shear measurements at 22 and 37°C. The copolymer volume fraction and the elastic storage modulus of the hydrogels decreased as the itaconic acid percentage in the copolymer increased. This behavior was attributed to the higher hydrophilic character of the itaconic acid comonomer. Effective crosslinking density, molar mass between crosslinks, and the polymer–solvent interaction parameter were determined from the experimental values of the elastic storage moduli and the copolymer volume fractions. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2540–2545, 2002</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.10852</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>New York: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Applied sciences ; copolymerization ; crosslinking ; drug delivery systems ; Exact sciences and technology ; hydrogels ; Organic polymers ; Physicochemistry of polymers ; Properties and characterization ; Solution and gel properties ; swelling</subject><ispartof>Journal of applied polymer science, 2002-09, Vol.85 (12), p.2540-2545</ispartof><rights>Copyright © 2002 Wiley Periodicals, Inc.</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4012-9690e87968fddf94a41aedaf7705358627e569e67b274652cca5daa1d9e57aec3</citedby><cites>FETCH-LOGICAL-c4012-9690e87968fddf94a41aedaf7705358627e569e67b274652cca5daa1d9e57aec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=13776540$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Quintana, José R.</creatorcontrib><creatorcontrib>Valderruten, Nora E.</creatorcontrib><creatorcontrib>Katime, Issa</creatorcontrib><title>Mechanical properties of poly(N-isopropyl-acrylamide-co-itaconic acid) hydrogels</title><title>Journal of applied polymer science</title><addtitle>J. Appl. Polym. Sci</addtitle><description>Hydrogels of N‐isopropylacrylamide and itaconic acid were synthesized with different monomer ratios and with two crosslinking agent concentrations. The different xerogels were immersed in water and the swelling process was conducted up to equilibrium conditions at two temperatures (22 and 37°C). These temperatures are lower and higher than the transition temperature shown by PNIPA hydrogels. The mechanical properties of the different solvated hydrogels were examined by oscillatory shear measurements at 22 and 37°C. The copolymer volume fraction and the elastic storage modulus of the hydrogels decreased as the itaconic acid percentage in the copolymer increased. This behavior was attributed to the higher hydrophilic character of the itaconic acid comonomer. Effective crosslinking density, molar mass between crosslinks, and the polymer–solvent interaction parameter were determined from the experimental values of the elastic storage moduli and the copolymer volume fractions. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2540–2545, 2002</description><subject>Applied sciences</subject><subject>copolymerization</subject><subject>crosslinking</subject><subject>drug delivery systems</subject><subject>Exact sciences and technology</subject><subject>hydrogels</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Properties and characterization</subject><subject>Solution and gel properties</subject><subject>swelling</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNp1kL1OwzAURi0EEqUw8AZZkOhgaiexHY-lKgWplA5FlVisi-1QQ1pHdiXI25MSfiama12f80n3Q-ickitKSDqEum4fBUsPUI8SKXDO0-IQ9do_igsp2TE6ifGVEEoZ4T20uLd6DVunoUrq4Gsbds7GxJdJ7avmco5d9Pt9U2HQoalg44zF2mO3A-1bLwHtzCBZNyb4F1vFU3RUQhXt2ffso8ebyXJ8i2cP07vxaIZ1TmiKJZfEFkLyojSmlDnkFKyBUgjCMlbwVFjGpeXiORU5Z6nWwAwANdIyAVZnfTTocnXwMQZbqjq4DYRGUaL2Vai2CvVVRctedGwNsT20DLDVLv4JmRCc5aTlhh337irb_B-oRovFTzLuDBd39uPXgPCmuMgEU6v5VF0vn2ZZnlG1yj4Bwwd87g</recordid><startdate>20020919</startdate><enddate>20020919</enddate><creator>Quintana, José R.</creator><creator>Valderruten, Nora E.</creator><creator>Katime, Issa</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20020919</creationdate><title>Mechanical properties of poly(N-isopropyl-acrylamide-co-itaconic acid) hydrogels</title><author>Quintana, José R. ; Valderruten, Nora E. ; Katime, Issa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4012-9690e87968fddf94a41aedaf7705358627e569e67b274652cca5daa1d9e57aec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Applied sciences</topic><topic>copolymerization</topic><topic>crosslinking</topic><topic>drug delivery systems</topic><topic>Exact sciences and technology</topic><topic>hydrogels</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Properties and characterization</topic><topic>Solution and gel properties</topic><topic>swelling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Quintana, José R.</creatorcontrib><creatorcontrib>Valderruten, Nora E.</creatorcontrib><creatorcontrib>Katime, Issa</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of applied polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Quintana, José R.</au><au>Valderruten, Nora E.</au><au>Katime, Issa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical properties of poly(N-isopropyl-acrylamide-co-itaconic acid) hydrogels</atitle><jtitle>Journal of applied polymer science</jtitle><addtitle>J. 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This behavior was attributed to the higher hydrophilic character of the itaconic acid comonomer. Effective crosslinking density, molar mass between crosslinks, and the polymer–solvent interaction parameter were determined from the experimental values of the elastic storage moduli and the copolymer volume fractions. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2540–2545, 2002</abstract><cop>New York</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/app.10852</doi><tpages>6</tpages></addata></record> |
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subjects | Applied sciences copolymerization crosslinking drug delivery systems Exact sciences and technology hydrogels Organic polymers Physicochemistry of polymers Properties and characterization Solution and gel properties swelling |
title | Mechanical properties of poly(N-isopropyl-acrylamide-co-itaconic acid) hydrogels |
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