Tuning chain extender structure to prepare high-performance thermoplastic polyurethane elastomers

In this work, a novel strategy is developed to solve the issue of mutually exclusive high mechanical robustness and thermo-stability for thermoplastic polyurethane (PU). A leaf-like and reticulate interfingering superstructure can be seen. The superstructure of polyurethanes can also be tuned by the...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2018-01, Vol.8 (37), p.20701-20711
Main Authors: Xu, Wei Juan, Wang, Jian Jun, Zhang, Shi Yu, Sun, Jun, Qin, Chuan Xiang, Dai, Li Xing
Format: Article
Language:English
Subjects:
Chains
Chemistry
Elasticity
Elastomers
Elongation
Molecular chains
Polarity
Polyurethane resins
Thermal stability
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:In this work, a novel strategy is developed to solve the issue of mutually exclusive high mechanical robustness and thermo-stability for thermoplastic polyurethane (PU). A leaf-like and reticulate interfingering superstructure can be seen. The superstructure of polyurethanes can also be tuned by the polarity of chain extender molecular changing the number for ferrocene redox centres, thus to further enhance the thermal stability and elasticity of PUs. As a result, by incorporating bisferrocene units into the main chain of PU, a high-performance PU elastomer can be synthesized with a highest initial degradation temperature of of 345 °C, a highest tensile strength of 42.3 MPa with an elongation over 1000%, as well as a toughness of 19.6 GJ m . These results conclusively suggest that high-performance thermoplastic polyurethane elastomers had great promise for potential application in a wide range of practical fields.
ISSN:2046-2069
2046-2069
DOI:10.1039/c8ra02784f