Willow Lignin Recovered from Hot‐Water Extraction for the Production of Hydrogels and Thermoplastic Blends

编号 020024903

推送时间 20200727

研究领域 林产化工 

年份 2020 

类型 期刊 

语种 英语

标题 Willow Lignin Recovered from Hot‐Water Extraction for the Production of Hydrogels and Thermoplastic Blends

来源期刊 ChemSusChem

期 第249期

发表时间 20200720

关键词 Biomass-willow;  hot-water extracted lignin;  hydrogels;  renewable resources;  thermoplastic blends; 

摘要 A blend of commercial willow cultivars ( Salix spp.) of willow was subjected to hydrothermal pretreatment;hot‐water extraction in a pilot plant 65‐ft 3 digester. Lignin recovered from the autohydrolyzate (willow lignin, WL) was used to produce hydrogels and thermoplastic blends. Lignin‐kaolin‐acrylamide (WL 10.7% w/w) and lignin‐poly(ethylene)glycol diglycidyl ether (WL 66.7% w/w) hydrogels exhibited favorable adsorption and absorption properties, respectively. Dye adsorption kinetics, swelling capacities, fragrance emanation, and compression moduli were measured for the hydrogels, along with SEM characterization. Additionally, willow lignin was esterified by acetylation (C 2 , WAc) and acylation with lauroyl chloride (C 12 , WFA, WFA H ). The crude and esterified lignin samples were blended (1‐12% w/w) with polylactic acid (PLA) via lab‐scale melt extrusion to produce thermoplastic blends. The physicochemical properties of the blends were evaluated. They exhibited an increase in degradation temperature and UV absorbance with potential to hinder photodegradation of PLA and may be leveraged in packaging applications.

服务人员 尚玮姣

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