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Ionic elastomer based on carboxylated nitrile rubber: infrared spectral analysis

2000; Wiley; Volume: 49; Issue: 12 Linguagem: Inglês

10.1002/1097-0126(200012)49

1097-0126

Uttam Kumar Mandal,

Dielectric materials and actuators

Polymer InternationalVolume 49, Issue 12 p. 1653-1657 Research Article Ionic elastomer based on carboxylated nitrile rubber: infrared spectral analysis U K Mandal, Corresponding Author U K Mandal School of Chemical Technology, GGS Indraprastha University, Kashmere Gate, Delhi - 110006, IndiaSchool of Chemical Technology, GGS Indraprastha University, Kashmere Gate, Delhi - 110006, IndiaSearch for more papers by this author U K Mandal, Corresponding Author U K Mandal School of Chemical Technology, GGS Indraprastha University, Kashmere Gate, Delhi - 110006, IndiaSchool of Chemical Technology, GGS Indraprastha University, Kashmere Gate, Delhi - 110006, IndiaSearch for more papers by this author First published: 21 November 2000 https://doi.org/10.1002/1097-0126(200012)49:12 3.0.CO;2-UCitations: 37Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Carboxylated nitrile rubber (XNBR) neutralized by metal oxide forms an ionic elastomer (ionomer) due to formation of ionic clusters by the metal carboxylated salt. Cluster formation in carboxylated nitrile rubber by metal oxide, mainly zinc oxide (ZnO), has been studied by infrared analyses. Two modes of plasticization, ie plasticization of the hydrocarbon-rich phase and plasicization of the ionic domains (hard phase), have also been analysed by infrared studies. Results reveal that the cluster formation is stabilized at higher loading of metal oxide with hexacoordinate salt formation and depends on the type of metal oxide. Spectral studies also reveal that a non-polar plasticizer such as dioctyl phthalate does not affect the characteristic bands of ionic cluster, but polar plasticizers such as dimethylsulfoxide and ammonia solvate the ionic cluster, causing the disappearance of the band corresponding to the hexacoordinated carboxylate salt. Infrared spectral analysis of the ionomer based on carboxylated nitrile rubber (XNBR) further confirms the earlier claims that the profound change in physical properties of the polymer is due to the presence of physical crosslinks generated by ionic clusters. © 2000 Society of Chemical Industry REFERENCES 1Eisenberg A and King M, Ion Containing Polymers, Academic Press, New York (1997). Google Scholar 2Eisenberg A and Bailey F E, Coulombic Interactions in Macromolecular Systems, ACS Symposium Series, American Chemical Society, Washington DC (1986). 10.1021/bk-1986-0302 Google Scholar 3MacKnight W J and Lundberg R D, Rubber Chem Technol 57: 652 (1984). 10.5254/1.3536023 CASWeb of Science®Google Scholar 4Brown H P, Rubber Chem Technol 30: 931 (1963). 10.5254/1.3539642 Google Scholar 5Chakraborty S K and De S K, Rubber Chem Technol 55: 990 (1982). 10.5254/1.3535927 CASWeb of Science®Google Scholar 6Mandal U K, Tripathy D K and De S K, Polymer 34: 3832 (1993). 10.1016/0032-3861(93)90507-7 CASWeb of Science®Google Scholar 7Mandal U K, Tripathy D K and De S K, Plast Rubber Comp Appl 24: 19 (1995). CASWeb of Science®Google Scholar 8Mandal U K, Tripathy D K and De S K, J Appl Polym Sci 55: 1185 (1996). 10.1002/app.1995.070550805 Web of Science®Google Scholar 9Mandal U K, Tripathy D K and De S K, Polym Eng Sci 36: 283 (1996). 10.1002/pen.10414 CASWeb of Science®Google Scholar 10Mandal U K, Tripathy D K and De S K, Polym Commun 37: 3437 (1996). 10.1016/0032-3861(96)88493-X CASWeb of Science®Google Scholar 11Mandal U K, Tripathy D K and De S K, Polym Commun 37: 6753 (1996). Google Scholar 12Coleman M M, Lee J Y and Painter P C, Macromolecules 23: 2339 (1990). 10.1021/ma00210a033 CASWeb of Science®Google Scholar 13Brozoski B APainter P C and Coleman M M, Macromolecules 17: 591 (1984). Google Scholar 14Painter P C, Brozoski B A and Coleman M M, J Polym Sci Polym Phys Ed 20: 1069 (1982). 10.1002/pol.1982.180200614 CASWeb of Science®Google Scholar 15Mandal U K, PhD Thesis, Rubber Technology Centre, IIT, Kharagpur, India (1996). Google Scholar 16Brozoski B A, Painter P C and Coleman M M, J Polym Sci Polym Phys Ed 17: 591 (1983). Google Scholar 17Silverstein R M, Bassler G C and Morrill T C, in Spectroscopic Identification of Organic Compounds, John Wiley & Sons, New york. Chapter 3 (1991). Google Scholar 18Smith P and Goulet L, J Polym Sci Polym Phys Ed 31: 327 (1993). 10.1002/polb.1993.090310311 CASWeb of Science®Google Scholar 19Hirasawa E, Yamamoto Y, Tadano K and Yano S, Macromolecules 22: 2776 (1989). 10.1021/ma00196a041 CASWeb of Science®Google Scholar Citing Literature Volume49, Issue12December 2000Pages 1653-1657 ReferencesRelatedInformation