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Prevulcanization of isoprene rubber latex

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Abstract

Prevulcanization of isoprene rubber (IR) latex was investigated by latex-state 13C-NMR spectroscopy to understand its mechanism in latex stage. The prevulcanization was carried out at 50 to 90 °C with sulfur (S) and zinc-dibutyldithiocarbamate (ZDBC) as vulcanizing agents. The prevulcanized IR latex was subjected to latex-state 13C-NMR spectroscopy. The signal at 44 ppm was assigned to secondary carbons adjacent to carbons linking to S atoms, whereas the signal at 58 ppm was assigned to tertiary and quaternary carbons linking to S atoms. The time evolution of the small signals at 44 and 58 ppm was investigated at various temperatures, and kinetic constants were determined at each temperature. The activation energy of the prevulcanization of IR latex was estimated from the kinetic constants to be about 80 kJ/mol.

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References

  1. Ukawa J, Kawahara S, Sakai JJ (2007) Structural characterization of vulcanized natural rubber by latex state 13C NMR Spectroscopy. Polym Sci B Polym Phys 45:1003–1009

    Article  CAS  Google Scholar 

  2. Kawahara S, Ukawa J, Sakai J, Yoshimasa Y, Isono Y (2007) High-resolution latex-state 13C-NMR spectroscopy for natural rubber vulcanizates. Rubber Chem Technol 80:751–761

    Article  CAS  Google Scholar 

  3. Kawahara S, Chaikumpollert O, Sakurai S, Yamamoto Y (2009) Crosslinking junctions of vulcanized natural rubber analyzed by solid-state NMR spectroscopy equipped with field-gradient-magic angle spinning probe. Polymers 50:1626–1631

    Article  CAS  Google Scholar 

  4. Claramma NM, Mathew NM (1997) Effect of temperature on sulfur prevulcanization of natural rubber latex. J Appl Polym Sci 65:1913–1920

    Article  CAS  Google Scholar 

  5. Sasidharan KK, Joseph R, Palaty S, Gopalakrishnan KS, Rajammal G, Pillai VP (2005) Effect of the vulcanization time and storage on the stability and physical properties of sulfur-prevulcanized natural rubber latex. J Appl Polym Sci 97:1804–1811

    Article  CAS  Google Scholar 

  6. Ho CC, Khew MC (1999) Surface morphology of prevulcanized natural rubber latex films by atomic force microscopy: new insight into the prevulcanization mechanism. Langmuir 15:6208–6219

    Article  CAS  Google Scholar 

  7. Fitch RM, Gajria C, Tarcha PJJ (1979) Acrylate polymer colloids: kinetics of autocatalyzed hydrolysis. Colloid Interface Sci 71:107–116

    Article  CAS  Google Scholar 

  8. Ang TT, Roberts JD (1979) Carbon-3 nuclear magnetic resonance spectra of natural rubber latex. Plast Rubber Mater Apple 4:138–139

    CAS  Google Scholar 

  9. Gambhir PN, Joshi DK, Tiwari PN, Mami J (1993) Quick determination of dry rubber content in natural rubber latex by low-resolution pulsed NMR technique. J Nat Rubber Res 8:208–212

    CAS  Google Scholar 

  10. Kawahara S, Bushimata S, Sugiyama T, Hashimoto C, Tanaka Y (1999) A novel method for 13C-NMR spectroscopy of polymer in emulsion: quantitative analysis of microstructure of crosslinked polybutadiene in latex. Rubber Chem Technol 72:844–853

    Article  CAS  Google Scholar 

  11. Kawahara S, Washino K, Morita T, Tanaka Y, Isono Y (2001) High-resolution latex state 13C-NMR spectroscopy: part II. Effect of particle size and temperature. Rubber Chem Technol 74:295–302

    Article  CAS  Google Scholar 

  12. Coran AY (1994) Science and technology of rubber. In: Mark JE, Erman B, Eirich FR (eds) Vulcanization Chapter 7, 2nd edn. Academic Press, San Diego

    Google Scholar 

  13. Mori M, Koenig JL (1997) Solid-state C-13 NMR studies of vulcanized elastomers XVII. Effect of carbon black grade on the network structure in natural rubber vulcanizates. Rubber Chem Technol 70:671–680

    Article  CAS  Google Scholar 

  14. Mori M (2003) Study of vulcanization and degradation chemistry in natural rubber by solid-state 13C NMR and physical property measurements. Rubber Chem Technol 76:1259–1275

    Article  CAS  Google Scholar 

  15. Parker DD, Koenig JL (1998) Solid-state 13C-NMR studies of changes in crosslinked carbon structure of natural rubber during heating under air and nitrogen environments. J Appl Polym Sci 70:1371–1383

    Article  CAS  Google Scholar 

  16. Chaikumpollert O, Yamamoto Y, Suchiva K, Kawahara S (2012) Mechanical properties and cross-linking structure of cross-linked natural rubber. Polym J 44:772–777

    Article  CAS  Google Scholar 

  17. Flory PJ, Rehner J (1943) Statistical mechanics of cross-linked polymer networks. J Chem Phys 11:521–526

    Article  CAS  Google Scholar 

  18. Houston PL (2001) Chemical kinetic and reaction dynamic. The rates of chemical reactions. Chapter 2 (McGraw-Hill Higher)

  19. Fossey J, Lefort D, Sorba J (1995) Free radical in organic chemistry. Elementary reactions and mechanisms. Chapter 5 (John Wiley & Sons, Ltd)

  20. Kooyman EC (1967) Thiyl radicals. Pure Appl Chem 15:81–88

    Article  Google Scholar 

Download references

Acknowledgments

This work was supported by Japanese Government (Monbugakusho) scholarship from The Ministry of Education, Science and Culture, Japan and research work is done in Nagaoka University of Technology, Japan.

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Authors and Affiliations

  1. Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan

    Kewwarin Sae-heng, Noriaki Iso, Kenichiro Kosugi & Seiichi Kawahara

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  1. Kewwarin Sae-heng
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  2. Noriaki Iso
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  3. Kenichiro Kosugi
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  4. Seiichi Kawahara
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Correspondence to Seiichi Kawahara.

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Sae-heng, K., Iso, N., Kosugi, K. et al. Prevulcanization of isoprene rubber latex. Colloid Polym Sci 293, 1457–1464 (2015). https://doi.org/10.1007/s00396-015-3513-z

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  • DOI: https://doi.org/10.1007/s00396-015-3513-z

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