改性淀粉胶黏剂的制备及特性研究

Study on Preparation and Properties of Modified Starch Adhesives

摘要:

淀粉胶黏剂以其绿色环保的特点在造纸、木材加工、纺织、建筑等领域的运用越来越受到重视。作者以氧化淀粉为原料，研究其与羧甲基纤维素钠（CMC）复配并加入十二烷基硫酸钠（SDS）后对胶黏剂特性的影响。结果发现随着CMC复配质量比的增大，胶黏剂的冻融稳定性、初黏力、黏着性都逐渐增大，但剥离强度和拉丝程度变化不大，最终选择了淀粉与CMC质量比为85∶15作为最适配比。随着SDS添加质量分数从0.5%到1%再到1.5%，胶黏剂的初黏力、黏着性及冻融稳定性呈现先增大后减小的趋势，拉丝程度变化不大，最终选择了质量分数1%为最适SDS添加量。

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.