Vinylformamide-based cationic polymers as retention aid in alkaline papermaking

Fei Wang, Hiroo Tanaka, Takuya Kitaoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Since papermaking process has been shifting to alkaline from acidic condition, exploring novel wet-end retention aids is considered to be of important resolution for modern papermaking industry. In this study vinylformamide-based cationic polymers were synthesized by polymerization of N-vinylformamide (NVF) followed hydrolysis of poly-N-vinylformamide (PNVF) and copolymerization of vinylformamide with quaternary ammonium cationic monomers, respectively. The characteristics of the resulting polymers was determined by using GPC and polyelectrolyte titration method. The polymers were then used as retention aid of rosin sizing in alkaline papermaking conditions. The results showed great potential of these vinylformamide-based cationic polymers as effective retention aids of alkaline papermaking. It was found that the retention performance is relative to the chemical structure of cationic portion and molecular weight of the polymer. Furthermore, the characterization of the retention behavior of the rosin size particles by the polymers using scanning electron microscope (SEM) and electron spectroscopy for chemical analysis (ESCA) revealed that the polymer molecules could physically form a special structure with rosin size particles so that the rosin size particles would still stable under alkaline conditions.

Original languageEnglish
Title of host publicationTAPPI Technology Summit
Number of pages19
Publication statusPublished - 2002
EventProceedings of the 2002 TAPPI Technology Summit - Atlanta, GA, United States
Duration: Mar 3 2002Mar 7 2002

Publication series

NameTAPPI Technology Summit


OtherProceedings of the 2002 TAPPI Technology Summit
Country/TerritoryUnited States
CityAtlanta, GA

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Industrial and Manufacturing Engineering


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