STRUCTURE AND PROPERTIES OF STARCH AND OXIDIZED STARCH DERIVATIVES, AND PREPARATION OF ADHESIVE COMPOSITION BASED ON THEM

This article describes the structure, physicochemical properties of starch and its oxidized derivatives, as well as the technology for preparing an adhesive composition from them. Within the research framework, starch samples were oxidized using various methods, and the amount of carboxyl and aldehyde groups in their composition was determined. The morphology of the oxidized starches was studied using a scanning electron microscope (SEM), and their thermal stability was analyzed by thermogravimetric and differential scanning calorimetry (TG-DSC). An adhesive composition based on oxidized starch with polyacrylamide and sodium silicate additives was prepared. Important practical properties of the finished composition, such as the degree of thixotropic recovery, setting time, and adhesive strength, were tested. The research results demonstrated the possibility of obtaining a high-quality, semi-transparent, and stable adhesive based on oxidized starch.本文系统阐述了淀粉及其氧化衍生物的结构、理化性质，以及以其为原料制备胶粘剂组合物的工艺方法。本研究采用多种氧化路径对淀粉样品进行氧化改性，并测定了其分子结构中羧基与醛基的含量。借助扫描电子显微镜（SEM）观测了氧化淀粉的微观形貌，并通过热重-差示扫描量热法（TG-DSC）分析了其热稳定性能。研究人员制备了以氧化淀粉为基材，复配聚丙烯酰胺与硅酸钠添加剂的胶粘剂组合物，并对该成品胶粘剂的关键实用性能进行测试，涵盖触变恢复率、固化时间与粘接强度等指标。研究结果证实，以氧化淀粉为原料可制备得到高品质、半透明且性能稳定的胶粘剂。