us7863395b2 – polyacrylamide-based strengthening agent in belgium

us7863395b2 – polyacrylamide-based strengthening agent in belgium
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  • Can bio-based paper strengthening agents replace petroleum-based wet strengthening agents?
  • The objective of this research was to develop a bio-based paper strengthening agent for the replacement of petroleum-based paper wet strengthening agents like polyamide epichlorohydrin (PAE) and glyoxylate polyacrylamide (GPAM), especially for the application of hygienic paper products.
  • What are the benefits of PAM based paper strengthening agents?
  • PAM-based paper strengthening agents improve the dry strength of paperboard (in such products as cardboard boxes), printing paper and food wrapping paper. Also, increasing the molecular weight of polymers and optimizing the placement of cationic and anionic groups can boost their properties and facilitate use in a variety of applications.
  • Does glyoxylate starch amide increase tensile strength?
  • The wet tensile index of 1% glyoxylate starch-amide-treated tissue paper was about 60–70% higher than commercial GPAM and PAE. The increase in wet strength of paper products was in agreement with increased covalent bonding between glyoxylate starch-amide and pulp fiber.
  • What is polyacrylamide used for?
  • Polyacrylamides are water-soluble synthetic polymers mainly used in papermaking as dry strength agents, in wastewater treatment as flocculants or coagulants and in crude oil extraction to enhance tertiary recovery. They are also widely employed in textile auxiliaries, laundry glue, adhesives (synthetic glues) and paints.