Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion | Zendy

Anitha S. Nair | Zendy; Suchithra Cherian | Zendy; Nisha Balachandran | Zendy; Unnikrishnan Gopalakrishna Panicker | Zendy; Santhosh Kumar Kalamblayil Sankaranarayanan | Zendy

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Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion

Author(s) -

Anitha S. Nair,

Suchithra Cherian,

Nisha Balachandran,

Unnikrishnan Gopalakrishna Panicker,

Santhosh Kumar Kalamblayil Sankaranarayanan

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b00789

Subject(s) - morphology (biology) , adhesion , polymer chemistry , materials science , polymer science , chemistry , chemical engineering , biophysics , composite material , biology , genetics , engineering

Hybrid poly(hydroxy urethane)s (PHUs) are synthesized by copolymerizing aromatic/alicyclic cyclic carbonates with a polyether amine via addition polymerization. They result into polymers with an average molecular weight of 10 kDa and exhibit solubility in common organic solvents. The hybrid PHUs display T g up to 18 °C. PHUs are enriched with multiple H-bonded interactions and they are assessed using temperature-dependent 1 H NMR and Fourier-transform infrared studies. PHUs possess folded-sheet morphology with nanogap between folds and nanowidth between chains. The secondary interactions bestow thermoreversible property to PHUs, and they display good adhesion to both polar (Al-Al) and nonpolar (HDPE-HDPE) substrates. Hybrid PHUs show improved optical transparency compared to homo PHUs. The PHUs are thermally stable up to 250 °C.

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