Natural Modified Starch and Synthetic Sizes in Function of Characteristics of Sized Yarn

Abstract

The aim of this study was to investigate the changes in properties of yarn made by sizing with synthetic and natural modified corn starch. Different procedures for obtaining modified natural (corn) starch and various combinations of natural and synthetic sizes were used to explore the differences in the properties of sized yarn. The sizing process was carried out wunderith constant conditions in a newly developed laboratory sizing machine on twisted cotton yarns of 20×2 tex and 30×2 tex. According to the results obtained, yarn sized with synthetic sizes has substantially better properties than those which are naturally sized with modified starch. However, sometimes these differences are not significant or they do not exist at all. Twisted yarn is not always necessary in sizing in order to increased its strength but rather to protect the surface from wear and refine projecting fibers; in this case natural modified starch from corn can meet the requirements. The significance of this research is the application of natural sizes, improvement of the sizing process with natural modified sizes using new achievements in the development of the sizing process, and thus creating a positive environmental and economic impact.

Sizing process of cotton yarn by size from a copolymer of methacrylic acid and hydrolyzed potato starch

“…The application was carried out on a specially designed laboratory device for this purpose, which has been previously detailed. 10 The optimized sizing conditions at this laboratory level were as follows:…”

Synthesis of Corn Starch Derivatives and Their Application in Yarn Sizing

“…Modification of natural starches reduces or almost eliminates all deficiencies of natural starches. As environmentally friendly products, they should gradually replace fully synthetic sizing agents such as polyvinyl alcohol (PVA), carboxyl methyl cellulose (CMC), polyacrylate (PA), and other synthetic agents used in the sizing process today [ 31 , 32 , 33 ].…”