New thermoplastic polyurethane elastomers based on sulfur-containing chain extenders

Kultys, Anna; Puszka, Andrzej

doi:10.2478/pjct-2013-0070

Abstract

New thermoplastic polyurethane elastomers (TPUs) were synthesized by a one-step melt polyaddition from poly(oxytetramethylene) diol of M¯n = 2000 g/mol as the soft segment, 1,1’-methanediylbis(4-isocyanatocyclohexane) (HMDI, Desmodur W®), and 2,2’-[methanediylbis(benzene-4,1-diylmethanediylsulfanediyl)]diethanol (diol E) or 6,6’-[methanediylbis(benzene-4,1-diylmethanediylsulfanediyl)]dihexane-1-ol (diol H) as unconventional chain extenders. The effects of the kind and amount of the polymer diol and chain extender used on the structure and properties of the polymers were studied. The polymers were examined by Fourier transform infrared spectroscopy, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, Shore hardness and tensile testing. Both the adhesive and optical properties were determinated for a selected polymer. The obtained TPUs were amorphous, colorless, high-molar-mass materials. It was observed that the polymers with the diol E showed higher hardness and tensile strengths but smaller elongations at break than diol H-based ones. All of the polymers exhibited a relatively good thermal stability. Their temperatures of 5% mass loss were in the range 312-338°C.

References

1. Ulrich, H. (2003). In Mark, H.F., (Ed.), Encyclopedia ofPolymers Science and Technology, (3rd ed., Vol. 4). Hoboken, New Jersey, Wiley.
Search in Google Scholar
2. Holden, G. (2007). In Kirk-Othmer, Kroschwitz, J., (Ed.), Encyclopedia of Chemical Technology (5th ed., Vol. 24), New York, Wiley-Interscience.
Search in Google Scholar
3. Wirpsza, Z. (1993). Polyurethanes: Chemistry, Technologyand Applications; New York, USA, Ellis Horwood.
Search in Google Scholar
4. Gogolewski, S. (1989). Selected topics in biomedical polyurethanes. A review. Colloid & Polymer Science 267. 757-787. DOI: 10.1007/BF01410115.10.1007/BF01410115
Open DOI Search in Google Scholar
5. Zia, K.M., Bhatti, I.A., Barikani, M., Zuber, M. & Sheikh, M.A. (2009). Thermo-mechanical characteristics of UV-irradiated polyurethane elastomers extended with -alkane diols. Nuclear Instruments and Methods in Physics Research B 267, 1811-1816, DOI: 10.1016/j.nimb.2009.02.065.10.1016/j.nimb.2009.02.065
Open DOI Search in Google Scholar
6. Krol, P. (2009). Polyurethanes - a review of 60 years of their syntheses and applications. Polimery 54 (7-8). 487-500.10.14314/polimery.2009.489
Search in Google Scholar
7. Duda, A. & Penczek, S. (1989). In Mark, H.F., (Ed.), Encyclopedia of Polymers Science and Technology (2nd ed., Vol. 16). Hoboken, New Jersey. Wiley.
Search in Google Scholar
8. Kultys, A. (2010). Sulfur-Containing Polymers. Encyclopediaof Polymers Science and Technology. http://onlinelibrary.wiley.com/doi/10.1002/0471440264.pst355.pub2.10.1002/0471440264.pst355.pub2
Open DOI Search in Google Scholar
9. Kricheldorf, H.R. & Schwarz, G. (2007). Poly(thioester) s. J. Macromol. Sci. A 44(4-6), 625-649. DOI: 10.1080/ 10601320701285094.10.1080/10601320701285094
Open DOI Search in Google Scholar
10. Kultys, A., Rogulska, M. & Pikus, S. (2012). New Thermoplastic Segmented Polyurethanes with Hard Segments Derived from 4,4 ‘-Diphenylmethane Diisocyanate and Methylenebis(1,4-phenylenemethylenethio)dialcanols. J. Appl. Polym. Sci. 123 (1), 331-346. DOI: 10.1002/app.34102.10.1002/app.34102
Open DOI Search in Google Scholar
11. Kultys, A. & Rogulska, M. (2011). New thermoplastic poly(carbonate-urethane) elastomers. Pol. J. Chem. Technol. 13 (1), 23-30. DOI: 10.2478/v10026-011-0005-x.10.2478/v10026-011-0005-x
Open DOI Search in Google Scholar
12. Kultys, A., Rogulska, M., Pikus, S. & Skrzypiec, K. (2009). The synthesis and characterization of new thermoplastic poly(carbonate-urethane) elastomers derived from HDI and aliphatic-aromatic chain extenders. Eur. Polym. J. 45 (9), 2629-2643. DOI: 10.1016/j.eurpolymj.2009.06.003.10.1016/j.eurpolymj.2009.06.003
Open DOI Search in Google Scholar
13. Kultys, A. & Pikus, S. (2001) Polyurethanes containing sulfur. III. New thermoplastic HDI-based segmented polyurethanes with diphenylmethane unit in their structure J. Polym. Sci. Pol. Chem. 39 (10), 1733-1742. DOI: 10.1002/pola.1151.10.1002/pola.1151
Open DOI Search in Google Scholar
14. Kultys, A., Podkoscielny, W. & Majewski, W. (2000). Polyurethanes containing sulfur. II. New thermoplastic nonsegmented polyurethanes with diphenylmethane unit in their structure. J. Polym. Sci. Part A Polym. Chem. 38(10), 1767-1773. DOI: 10.1002/(SICI)1099-0518.10.1002/(SICI)1099-0518
Open DOI Search in Google Scholar
15. Kultys, A., Rogulska, M. & Gluchowska, H. (2011). The effect of soft-segment structure on the properties of novel thermoplastic polyurethane elastomers based on an unconventional chain extender. Polym. Int. 60, 652-659. DOI: 10.1002/pi.2998.10.1002/pi.2998
Open DOI Search in Google Scholar
16. Kojio, K., Nakashima, S. & Furukawa, M. (2007). Microphase-separated structure and mechanical properties of norbornane diisocyanate-based polyurethanes. Polymer 48, 997-1004. DOI: 10.1016/j.polymer.2006.12.057.10.1016/j.polymer.2006.12.057
Open DOI Search in Google Scholar
17. Hepburn, C. (1992). Trends in Polyurethane Elastomer Technology. Iran. J. Polym. Sci. Technol. 1(2), 84-110.
Search in Google Scholar

New thermoplastic polyurethane elastomers based on sulfur-containing chain extenders

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