Preparation and Characterization of Corn Starch and Lignosulfonate Blend Film with a High Content of Lignosulfonate

BioResources

Bin Li¹  Ruixin Shi² 

[1] China;Northeast Forestry University;

关键词: Mechanical properties;    Corn starch;    Lignosulfonate;    Water absorption capacity;    Blend film;    Morphology;    Thermal stability;   

DOI  :  10.15376/biores.11.4.8860-8874

来源: DOAJ

【 摘 要 】

A degradable starch/lignin blend film was prepared using corn starch and sodium lignosulfonate via a casting and solvent evaporation method. The effect of sorbitol content on the swelling properties of starch/lignosulfonate blend films was investigated. The effect of lignosulfonate content on the swelling and mechanical properties was also studied. The results showed that when the mass ratio of sorbitol to starch changed over a wide range, from 0:9 to 9:9, the water absorption of the blend films increased at first and then decreased. When the mass ratio of lignosulfonate to starch changed in the same range, the ultimate stress of the blend films decreased markedly, while the water absorption and elongation at break did not show any regular pattern. When the mass ratios of sorbitol to starch and lignosulfonate to starch were both 6:9, the resultant film presented good elasticity and improved hydrophobicity compared to those without lignosulfonate.

【 授权许可】

Unknown