期刊
ACS OMEGA
卷 6, 期 2, 页码 1534-1546出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c05234
关键词
-
资金
- Mid-career Researcher Program in Basic Research by the National Research Foundation of Korea (Ministry of Science and ICT) [2019R1A2C1005369]
- R&D Program for Forest Science Technology by Korea Forest Service (Korea Forestry Promotion Institute) [2020256A002021-0001]
- National Research Foundation of Korea [2019R1A2C1005369] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The study found that extraction conditions significantly impact the structural characteristics of ethanol organosolv lignin, with different structural features exhibiting varying effects on thermal properties. Lignins with low molecular weight and high phenolic hydroxyl content showed excellent thermal properties.
In general, lignin exhibits unpredictable and nonuniform thermal properties due to the structural variations caused by the extraction processes. Therefore, a systematic understanding of the correlation between the extraction conditions, structural characteristics, and properties is indispensable for the commercial utilization of lignin. In this study, the effect of extraction conditions on the structural characteristics of ethanol organosolv lignin (EOL) was investigated by response surface methodology. The structural characteristics of EOL (molecular weight, hydroxyl content, and intramolecular coupling structure) were significantly affected by the extraction conditions (temperature, sulfuric acid concentration, and ethanol concentration). In addition, the correlation between the structural characteristics and thermal properties of the extracted EOLs was estimated. The relevant correlations between the structural characteristics and thermal properties were determined. In particular, EOLs that had a low molecular weight, high phenolic hydroxyl content, and low aryl-ether linkage content exhibited prominent thermal properties in terms of their initial decomposition rate and a high glass transition temperature, T-g. Correspondingly, EOL-PLA blends prepared using three EOL types exhibited improved thermal properties (starting point of thermal decomposition and maximum decomposition temperature) compared to neat PLA and had thermal decomposition behaviors coincident with the thermal properties of the constituent EOLs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据