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

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...

Full description

Saved in:
Bibliographic Details
Published in:Fibers and polymers 2021, 22(11), , pp.2947-2953
Main Authors: Lee, Il Jae, Choi, Seong Wook, Kim, Hyun Taek, Kim, Ji Hyeon, Baik, Doo Hyun
Format: Article
Language:English
Subjects:
Breaking
Chains
Chemistry
Chemistry and Materials Science
Copolymers
Elastic recovery
Elastomers
Molecular weight
Polybutylene terephthalates
Polymer Sciences
Segments
Strain
Terephthalate
섬유공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-021-0469-0