Preparation and Characterization of High Molecular Weight Thermoplastic Polyetherester Elastomers Using Chain Extender 


Vol. 22,  No. 11, pp. 2947-2953, Nov.  2021
10.1007/s12221-021-0469-0


  Abstract

Thermoplastic polyetherester elastomer (TPEE) based on poly(butylene terephthalate) (PBT) as a hard segment and poly(tetramethylene ether glycol terephthalate) (PTMGT) as a soft segment was synthesized with hard segment content (HSC) 35 wt%. The high molecular weight TPEE copolymer was successfully prepared by using MDI as a chain extender from the TPEE synthesized. The intrinsic viscosity of the TPEE copolymer containing 3 wt% of MDI increased from 1.56 dl/g to 2.13 dl/g and the melt index decreased from 54.2 g/min to 11.5 g/min. The breaking stress of TPEE-MDI monofilament increased with MDI content and the breaking strain decreased with increasing MDI content. However, it is noticeable that the breaking stress of TPEE-MDI 3 wt% copolymer monofilament showed 41 % enhanced breaking stress while still retained pretty high breaking strain, i.e. 825 %. The elastic recovery of TPEE-MDI 1 wt% monofilament was 80.7 % in the first cycle and 76.0 % in the final cycle, which were higher than that of TPEE both in the first and the final cycles. These results meant that TPEE-MDI copolymer fiber could have enhanced elastic recovery as well as enhanced breaking stress.

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  Cite this article

[IEEE Style]

I. J. Lee, S. W. Choi, H. T. Kim, J. H. Kim, D. H. Baik, "Preparation and Characterization of High Molecular Weight Thermoplastic Polyetherester Elastomers Using Chain Extender," Fibers and Polymers, vol. 22, no. 11, pp. 2947-2953, 2021. DOI: 10.1007/s12221-021-0469-0.

[ACM Style]

Il Jae Lee, Seong Wook Choi, Hyun Taek Kim, Ji Hyeon Kim, and Doo Hyun Baik. 2021. Preparation and Characterization of High Molecular Weight Thermoplastic Polyetherester Elastomers Using Chain Extender. Fibers and Polymers, 22, 11, (2021), 2947-2953. DOI: 10.1007/s12221-021-0469-0.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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