Alkaline extraction of lignin from peanut shell biomass for the production of wood resin coatings/
Patrick Josua B. Legaspi, Zcarina Rei F. Muyargas, and Mikkhaela Marie F. Nazario .--
- Manila: Technological University of the Philippines, 2024
- viii, 108pages: 29cm. +1 CD-ROM (4 3/4in.)
Thesis (undergraduate)
College of Science .--
Includes bibliography.
In pursuit of an eco-conscious substitute for petroleum-derived epoxy resin, this study endeavors to extract lignin from peanut biomass for the production of a wood resin coating. This study demonstrated the Alkaline Extraction of Lignin using 10% NaOH solution digested for 6 hours and characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The obtained solid lignin was mixed with PEG 600, fumed silica, and hardener. The ratio of extracted solid lignin to PEG 600 was 1:8, extracted solid lignin with PEG 600 to fumed silica was 1:1 and extracted
solid lignin with PEG 600 and fumed silica to hardener was 1:2. Results revealed O-H, C- H, C=C and C-O bonds from the extracted solid lignin with wavelengths of 3371.57 cm-1
,
2922.16 cm-1
, 1633.71 cm-1
, 1228.66cm-1
, respectively. Scanning Electron Microscopy (SEM) revealed visible streaks, small holes, ragged and irregular web-like structures from 100x, 1000x, and 10000x magnifications, respectively. The physicochemical properties of wood coated with lignin-based wood resin coating were successfully conducted with manifested results. This study successfully utilized an alkaline extraction method to extract lignin from peanut shell biomass as an alternative epoxy for wood resin coatings. Further research is recommended to explore suitable plasticizers, additives, and hardeners for potential applications alongside lignin.