Study on Preparation and Properties of Modified Starch Adhesives

Abstract:

Starch adhesives have attracted more and more attention in the fields of paper making, wood processing, textile, architecture and so on because of its green and eco-friendly features. The oxidized starch was mixed with sodium carboxymethyl cellulose (CMC) and sodium lauryl sulfate (SDS) was added. Their effects on the properties of adhesive were studied in this paper. The results showed that with the increase of CMC proportion, the freeze-thaw stability, initial viscosity and adhesion of the adhesive increased gradually, however, the peeling strength and drawing degree changed insignificantly. Finally, the optimal ratio of starch to CMC was 85∶15. With the mass fraction of SDS added from 0.5% to 1% to 1.5%, the initial viscosity, adhesion and freeze-thaw stability of the adhesive increased at first and then decreased, and the drawing degree insignificantly changed. Finally, 1% mass fraction was determined as the optimum SDS content.