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Self-Healable, Transparent, Biodegradable, and Shape Memorable Polyurethanes Derived from Carbon Dioxide-Based Diols

Authors :
Xin Huang
Tingting Zhao
Shuanjin Wang
Dongmei Han
Sheng Huang
Hui Guo
Min Xiao
Yuezhong Meng
Source :
Molecules, Vol 29, Iss 18, p 4364 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

A series of CO2-based thermoplastic polyurethanes (TPUs) were prepared using CO2-based poly(polycarbonate) diol (PPCDL), 4,4′-methylenebis (cyclohexyl isocyanate) (HMDI), and polypropylene glycol (PPG and 1,4-butanediol (BDO) as the raw materials. The mechanical, thermal, optical, and barrier properties shape memory behaviors, while biocompatibility and degradation behaviors of the CO2-based TPUs are also systematically investigated. All the synthesized TPUs are highly transparent amorphous polymers, with one glass transition temperature at ~15–45 °C varying with hard segment content and soft segment composition. When PPG is incorporated into the soft segments, the resultant TPUs exhibit excellent self-healing and shape memory performances with the average shape fixity ratio and shape recovery ratio as high as 98.9% and 88.3%, respectively. Furthermore, the CO2-based TPUs also show superior water vapor permeability resistance, good biocompatibility, and good biodegradation properties, demonstrating their pretty competitive potential in the polyurethane industry applications.

Details

Language :
English
ISSN :
14203049
Volume :
29
Issue :
18
Database :
Directory of Open Access Journals
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
edsdoj.9b0e9de09c41c584c0022518dd756f
Document Type :
article
Full Text :
https://doi.org/10.3390/molecules29184364