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Macroporous open cell polyester amphigel using citric acid and PEO : Solvent absorption, thermal behavior, and slow release of pesticide
Author(s) -
Sarkar Dhruba Jyoti,
Shakil Najam A.,
Kumar Jitendra,
Rana Virendra Singh,
Kar Abhijit,
Behera Bijay Kumar,
Das Basanta Kumar
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49723
Subject(s) - citric acid , polyester , thermal stability , ethylene oxide , thermogravimetric analysis , chemical engineering , materials science , solvent , amphiphile , chloroform , sorption , absorption (acoustics) , polymer chemistry , nuclear chemistry , copolymer , chemistry , organic chemistry , polymer , composite material , adsorption , engineering
Abstract This article describes citric acid cross‐linked amphiphilic poly(ethylene oxide) (PEO) macroporous open cell polyester amphigel, optimally synthesized using response surface methodology by applying central composite design to screen significant reaction parameters for maximizing percent water sorption. The chemical structure of the amphigel was confirmed by proton nuclear magnetic resonance ( 1 H NMR), FT‐IR and the thermal behavior was studied using thermo‐gravimetric and DSC. Due to amphiphilic nature, the amphigels also showed high chloroform (1151.33%–1193.33%) and water (755.33%–865%) absorption capacity. Thermal analysis revealed that amphigels are less thermal stability as compared to PEO, however, the degradation process was found to be multi step. The amphigel was effectively used as a carrier for easy loading of a hydrophobic pesticide and showed a slow release of the same.