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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Neoteric Solvent Systems as Sustainable Media for Dissolution and Film Preparation of Poly-[(R)-3-hydroxybutyrate]
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Neoteric Solvent Systems as Sustainable Media for Dissolution and Film Preparation of Poly-[(R)-3-hydroxybutyrate]

机译：作为可持续介质作为溶出和薄膜制备的促进溶剂系统，聚 - [（r）-3-羟基丁酸盐]

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摘要

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.
机译：由于其可生物降解和生物相容性特征，多羟基烷烃（PHA）具有广泛的适用性。这使得它们适用于商业化作为石油的合成塑料的替代品。据报道，溶剂如氯仿溶解聚羟基烷烃。随着氯仿对健康和环境造成危害，这项工作试图用诸如离子液体等绿色溶剂来取代这种氯化溶剂。在该研究中，从Halomonas Hymothermalis中提取聚 - [（R）-3-羟基丁酸]（PHB），并在铵基离子液体（其）存在下研究其溶解性，稳定性和成膜能力。在研究中，在二乙醇铵（DA）中，观察到在二乙醇铵（DA）中，在聚合物的最大溶解度（30℃下为30℃）以及聚合物的结构稳定性，而最低溶解（0.4％w / v）被展现出来在2-羟乙基甲酸甲酯（HF）中。分子对接研究已经建立了ILS在溶解过程中的阴离子的关键作用。此外，在DA中溶解的PHB在明胶（g）存在下形成薄膜。发现回收的ILS是土壤相容的，并且由于它们的高氮含量，它们可用作氮缺乏型海藻的液体植物生理刺激剂的强化剂，使其适用于农业应用的土壤养分。

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