The influence of sodium-polyacrilic macromolecular chain length to the powder detergents secondary washing performances

Hemijska Industrija

关键词: sodium polyacrylate;    polymer;    detergents;    carbonate/zeolite builders;    secondary washing performances;    degree of whiteness;    elongation at break;    residue content after combustion;   

DOI  :  10.2298/HEMIND120220040M

来源: DOAJ

【 摘 要 】

In order to investigate the influence of sodium-polyacrylate polymer as aco-builder in addition to the carbonate/zeolite builders in detergent buildersystem, secondary washing performances of powder laundry detergent containingequal percentage of sodium polyacrylate with the different weight averagemolar mass, Mw, have been examined. The value of the degree of whiteness,elongation at break, and total residue content are the most importantsecondary washing performances that significantly depend on sodiumpolyacrylates efficiency used as crystal inhibitors, stabilizers forsuspended soil, and agents for soil redisposition prevention on fabricsurface. The values of the whiteness and elongation at break for cottonfabrics increase with the increase of average weight molecular mass, Mw, upto the value of 70000 g/mol, while in the case of further increase of weightaverage molar mass up to the 250000 g/mol value of these characteristicsbegin to decline. The values of the total residue content after combustionindicate an increase in its content with the increase of weight average molarmass of 3000 to 70000 g/mol, while the highest value has been reached in thesample of detergent containing sodiumpolyacrilic with the weight averagemolar mass of 250000 g/mol. All detergent samples show no significantdependence of the secondary washing characteristics on the number of washingcycles.

【 授权许可】

Unknown