1. Fractionation of technical lignin and its application on the lignin/poly-(butylene adipate-co-terephthalate) bio-composites
- Author
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Shao-Jun, Xiong, Si-Jie, Zhou, Hao-Hui, Wang, Han-Min, Wang, Shixin, Yu, Lu, Zheng, and Tong-Qi, Yuan
- Subjects
Acetone ,Structural Biology ,Adipates ,Polyesters ,Phthalic Acids ,General Medicine ,Alkenes ,Lignin ,Molecular Biology ,Biochemistry - Abstract
Complex and heterogeneous structures of lignin impede its further conversion and valorization. Herein, three technical lignins (from softwood, hardwood, and grass) were fractionated with acetone solvent to reduce their structural heterogeneity, which were then blended with poly-(butylene adipate-co-terephthalate) (PBAT) to fabricate biodegradable bio-composites. Macromolecular structures of lignins and their effects on the properties of lignin/PBAT composites were thoroughly investigated. Results showed that all fractionated lignin composites displayed better properties. Particularly, the raw and fractionated softwood lignin-based composites exhibited superior performance compared with others. Benefiting from the lower molecular weight, hydroxyl groups, and condensation, acetone fractionated softwood lignin presented the lowest T
- Published
- 2022
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