Supramolecular structure and sizing performance of rosin-based emulsion size microparticles

Fei Wang, Takuya Kitaoka, Hiroo Tanaka

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Compared with conventional acidic rosin emulsion size, neutral rosin size has good sizing efficiency under neutral-alkaline conditions of paper manufacture because its emulsion particles are stable to the action of hydroxide ions. Therefore, the sizing efficiency of emulsion-type rosin sizes, i.e. their ability to increase resistance to fluid penetration, was considered to be related with their particulate structure. The supramolecular structure of the neutral glycerin rosin ester-rosin size microparticles and acidic rosin size microparticles were investigated by using differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) absorption spectroscopy, and electron spectroscopy for chemical analysis (ESCA) techniques in this study. The results indicated that the neutral glycerin rosin ester-rosin size is quite distinct from the acidic rosin sizes in their particulate supramolecular structure. A glycerol dirosinate bilayer existed in the particle structure is hypothesized for the neutral glycerin rosin ester-rosin size microparticles. The results also suggest that the glycerol dirosinate bilayer distributes on the outermost layer of the neutral rosin size microparticles, covering the rosin acid molecules, so as to prevent the dissociation of rosin by hydroxide ions under neutral-alkaline conditions. Consequently, the difference in the supramolecular structure of the rosin sizes particles resulted in their different stabilities and retention characteristics.

Original languageEnglish
Pages (from-to)19-28
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume221
Issue number1-3
DOIs
Publication statusPublished - Jul 15 2003

Fingerprint

rosin
sizing
microparticles
Emulsions
Glycerol
emulsions
Esters
Electron spectroscopy
Ions
Infrared absorption
Absorption spectroscopy
esters
Differential scanning calorimetry
Infrared spectroscopy
Fourier transforms
Particle size
glycerols
particulates
Molecules
hydroxides

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Supramolecular structure and sizing performance of rosin-based emulsion size microparticles. / Wang, Fei; Kitaoka, Takuya; Tanaka, Hiroo.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 221, No. 1-3, 15.07.2003, p. 19-28.

Research output: Contribution to journalArticle

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