Chemical Modification of Softwood Kraft Lignin with Succinic Acid
This work explored the chemical modification of lignin with succinic acid for the first time. Temperature is crucial for the process, reducing reaction time and increasing conversion. In particular, at 160 °C for five h with 0.13 mol of imidazole and 0.35 mol of succinic acid, the reaction showed the most significant reduction in glass transition temperature (from 183.3 to 118.5 °C) and a decrease in the polydispersity index (from 11.31 to 8.96) and yielded 0.73 mmol g<sup>-1</sup> of new succinic acid groups. These results underscore the critical role of reaction conditions in modifying lignin properties, potentially expanding its application range and enhancing its value.
Authors
- Felipe Souto (ORCID: https://orcid.org/0000-0002-2442-2836)
- Gustavo Dias Azevedo (ORCID: https://orcid.org/0000-0002-2337-4481)
- Verônica Calado (ORCID: https://orcid.org/0000-0002-1365-8990)
- Gabriel O. Resende
Institutions
- Universidade Federal do Rio de Janeiro (BR)
Publication Details
- Journal
- ACS Omega
- Published
- 2024-12-19
- DOI
- https://doi.org/10.1021/acsomega.4c03127
- Citations
- 6
- Primary Topic
- Lignin and Wood Chemistry
- Type
- article
- Field-Weighted Citation Impact
- 1.11
Funders
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- Banco Nacional de Desenvolvimento Econômico e Social