Various hydrophilic polyelectrolytes, including cationic starch products are used by papermakers to promote inter-fiber bonding and increase the paper dry strength. Thus, papermakers customer requirements with a lower net cost of materials, more recycled fibers, or higher content of minerals to meet. In the absence of polymeric additives, key bond include mechanisms for the development of cellulose fibers capillary three-dimensional mixing of macromolecules on facing surfaces, and formability of the materials, and hydrogen bonding. Dry-strength additives adsorb efficiently onto fibers have a hydrophilic character and a sufficiently high molecular mass. Although it is possible to achieve significant strength gains through optimal use of each polyelectrolyte, a greater strength gains oppositely charged polyelectrolytes by sequential addition can be achieved. Superior strength can be achieved, followed by in situ formation of polyelectrolyte complexes, these complexes by deposition on fiber surfaces. Polyampholytes promise as an efficient chemical additives strength. Opportunities for further increases the performance of dry-strength agent can be, for fiber surface modification, self-assembled layers, and the optimization of the dry film properties of dry-strength polymers or polymers.
Read More:Dry-Strength-Agent sales
没有评论:
发表评论