scholarly journals Rationally Designed Eugenol-Based Chain Extender for Self-Healing Polyurethane Elastomers

ACS Omega ◽  
2021 ◽  
Author(s):  
Uk-Jae Lee ◽  
Se-Ra Shin ◽  
Heewon Noh ◽  
Han-Bit Song ◽  
Junyeob Kim ◽  
...  
Keyword(s):  
Chain Extender ◽  
Self Healing ◽  
Polyurethane Elastomers

scholarly journals Preparation and Characterization of Isosorbide-Based Self-Healable Polyurethane Elastomers with Thermally Reversible Bonds

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1061 ◽  
Author(s):  
Han-Na Kim ◽  
Dae-Woo Lee ◽  
Hoon Ryu ◽  
Gwang-Seok Song ◽  
Dai-Soo Lee
Keyword(s):  
Elevated Temperatures ◽  
Phenyl Isocyanate ◽  
Chain Extender ◽  
The Self ◽  
Self Healing ◽  
Polyurethane Elastomers ◽  
Wide Range ◽  
Chain Extenders ◽  
Product Durability

Polyurethane (PU) is a versatile polymer used in a wide range of applications. Recently, imparting PU with self-healing properties has attracted much interest to improve the product durability. The self-healing mechanism conceivably occurs through the existence of dynamic reversible bonds over a specific temperature range. The present study investigates the self-healing properties of 1,4:3,6-dianhydrohexitol-based PUs prepared from a prepolymer of poly(tetra-methylene ether glycol) and 4,4′-methylenebis(phenyl isocyanate) with different chain extenders (isosorbide or isomannide). PU with the conventional chain extender 1,4-butanediol was prepared for comparison. The urethane bonds in 1,4:3,6-dianhydrohexitol-based PUs were thermally reversible (as confirmed by the generation of isocyanate peaks observed by Fourier transform infrared spectroscopy) at mildly elevated temperatures and the PUs showed good mechanical properties. Especially the isosorbide-based polyurethane showed potential self-healing ability under mild heat treatment, as observed in reprocessing tests. It is inferred that isosorbide, bio-based bicyclic diol, can be employed as an efficient chain extender of polyurethane prepolymers to improve self-healing properties of polyurethane elastomers via reversible features of the urethane bonds.

Effect of chain extender on microphase structure and performance of self‐healing polyurethane and poly(urethane‐urea)

2021 ◽  
pp. 51371
Author(s):  
Yulong Wang ◽  
Yaqiong Li ◽  
Maoyong He ◽  
Jingjing Bai ◽  
Bingxiao Liu ◽  
...  
Keyword(s):  
Chain Extender ◽  
Self Healing ◽  
And Performance

An Unparalleled H-bonding and Ion-bonding Crosslinked Waterborne Polyurethane with Super Toughness and Unprecedented Fracture Energy

2021 ◽  
Author(s):  
Yuan Yao ◽  
Bo Liu ◽  
Ziyang Xu ◽  
Jianhai Yang ◽  
Wenguang Liu
Keyword(s):  
Mechanical Properties ◽  
Fracture Energy ◽  
Waterborne Polyurethane ◽  
Self Healing ◽  
Polyurethane Elastomers

Self-healing polyurethane elastomers have been extensively studied; however, developing an eco-friendly self-healable waterborne polyurethane (WPU) with exceptional mechanical properties remains a great challenge. Herein, we report healable, and highly tough...

scholarly journals Thermal analysis of polyurethane elastomers matrix with different chain extender contents for thermal conductive application

2019 ◽  
Vol 138 (2) ◽  
pp. 1003-1010 ◽  
Author(s):  
Patcharapon Somdee ◽  
Tímea Lassú-Kuknyó ◽  
Csaba Kónya ◽  
Tamás Szabó ◽  
Kálmán Marossy
Keyword(s):  
Thermal Analysis ◽  
Chain Extender ◽  
Polyurethane Elastomers
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