%T Anaerobic Biodegradation of Urea Cross-linked Starch: Effect of Lignin on Tensile Properties
%A Z. Majeed
%A Z. Ajab
%A N. Mansor
%A Y.S. Alqahtani
%A M.H. Mahnashi
%A B.A. Alyami
%A A.O. Alqarni
%I North Carolina State University
%V 17
%P 4323-4330
%X Lignin was used as a natural filler to improve the recalcitrance of environmentally friendly biocomposites made from starch. The tensile properties of lignin-starch biocomposites prepared by lignin reinforcing of urea cross-linked starch (UcS) were investigated in this study. The amount of lignin loaded into UcS was from 5 to 20. These various compositions were buried in a microcosm of anaerobic soil. After 7 days of burial, biodegraded biocomposites were tested for changes in tensile characteristics. Changes in biodegradation were measured by comparing them to pristine samples, which were utilised as a benchmark for estimating. Through reinforcing polymeric starch in UcS, lignin was discovered to slow down the rate of loss in tensile characteristics of composites. With increasing lignin loadings from 5 to 20, biodegraded biocomposites showed a constant reduction in elongation at break, Young's modulus, and tensile strength. As a result, the biodegraded biocomposites' metrics exhibited a substantially slower decrease than the control biodegraded film. The reduction in tensile properties of biodegraded biocomposites was explained by a significant difference (p < 0.05) using a paired t-test. This study found that lignin increased the strength of UcS and reduced the loss of tensile characteristics, probably as a result of soil microorganisms' biodegradation activity being inhibited. © 2022, North Carolina State University. All rights reserved.
%K Biodegradation; Crosslinking; Elastic moduli; Metabolism; Soil testing; Soils; Starch; Tensile strength; Urea,  reductions; Anaerobics; Anerobic biodegradation; Anerobic soil; Biocomposite; Cross-linked starch; Kraft lignin; Natural fillers; Tensile characteristics; Tensile, cross-linked starch, Lignin
%D 2022
%N 3
%R 10.15376/biores.17.3.4323-4330
%O cited By 0
%J BioResources
%L scholars17544