Neoteric Solvent Systems as Sustainable Media for Dissolution and Film Preparation of Poly-[(R)-3-hydroxybutyrate]
authors Sequeira, RA; Dubey, S; Pereira, MM; Maity, TK; Singh, S; Mishra, S; Prasad, K
nationality International
journal ACS SUSTAINABLE CHEMISTRY & ENGINEERING
author keywords Ionic liquids; poly-[(R)-3-hydroxybutyrate; solubility; film formation; sustainability
keywords IONIC LIQUID; SUPERCRITICAL-FLUID; POLYHYDROXYALKANOATES; SOLUBILITY; EXTRACTION; CELLULOSE; PHB; RECOVERY; CELLS; ACID
abstract Polyhydroxyalkanoates (PHAs) have a wide range of applicability due to their biodegradable and biocompatible characteristics. This makes them suitable for commercialization as an alternative to petroleum-based synthetic plastics. Solvents such as chloroform are reported to solubilize polyhydroxyalkanoates. With chloroform being hazardous for both health and the environment, this work attempts to replace this chlorinated solvent with green solvents like ionic liquids. In this study, poly-[(R)-3-hydroxybutyrate] (PHB) was extracted from Halomonas hydrothermalis, and its solubility, stability, and film-forming ability were investigated in the presence of ammonium-based ionic liquids (Its). Among the studied ILs, maximum solubility (3% w/v at 70 degrees C) along with chemical and structural stability of the polymer was observed in diethanol ammonium acetate (DA), while the lowest dissolution (0.4% w/v) was exhibited in 2-hydroxyethylammonium formate (HF). The molecular docking studies have established a critical role of the anions of the ILs in the dissolution process. Further, PHB dissolved in DA formed a film in the presence of gelatin (G). The recovered ILs were found to be soil compatible, and due to their high nitrogen content, they can be used as a fortifier for nitrogen-deficient seaweed-based liquid plant biostimulants making them suitable soil nutrients for agriculture applications.
publisher AMER CHEMICAL SOC
issn 2168-0485
year published 2020
volume 8
issue 32
beginning page 12005
ending page 12013
digital object identifier (doi) 10.1021/acssuschemeng.0c02684
web of science category Chemistry, Multidisciplinary; Green & Sustainable Science & Technology; Engineering, Chemical
subject category Chemistry; Science & Technology - Other Topics; Engineering
unique article identifier WOS:000562983600015
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journal analysis (jcr 2019):
journal impact factor 7.632
5 year journal impact factor 7.741
category normalized journal impact factor percentile 90.792
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