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Organic–inorganic hybrid polytriazoles; synthesis and shape memory properties
Author(s) -
Ragin Ramdas Meppadiyath,
Santhosh Kumar Kalamblayil Sankaranarayanan
Publication year - 2021
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.5245
Subject(s) - materials science , shape memory polymer , azide , cycloaddition , polymer , hybrid material , core (optical fiber) , shape memory alloy , chemical engineering , click chemistry , catalysis , polymer chemistry , composite material , nanotechnology , organic chemistry , chemistry , engineering
Shape memory polymers (SMPs) are “intelligent” visco‐elastic materials, which exhibit recovery of original shape upon exposure to external stimuli like temperature, light, and solvents. In this work, organic–inorganic hybrid polytriazoles (OIPs) were synthesized via copper‐ catalyzed azide‐alkyne cycloaddition (CuAAC) reaction. Toward this, triglycidyl isobutyl POSS azide (Az‐POSS, inorganic core), trisphenyl azide (TA, organic core), and propargylated phloroglucinol (PPG) were click cross‐linked at respective cross‐linking temperature. For pure inorganic core‐based polytriazole, no shape memory property was observed. However, film derived from 100% organic core exhibits good shape memory properties with a T g of 35°C. For OIPs, the T g was reduced and turned into hydrophobic with increase in Az‐POSS content. The shape retention and recovery of these hybrid polymers are >95% and they are thermally stable up to 300°C.