Surface modification and characterization of particulate mineral fillers

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

The efficacy of the surface treatment of particulate fillers depends on the chemical character of the components, on the method and conditions of the treatment, and on the amount of treating agent. To achieve maximum efficacy the coupling agent must be chosen specifically for each polymer/filler pair. Because of its ionic character CaCO3 can be effectively treated with stearic acid, which forms a basic salt on the filler surface. One stearic acid molecule is attached to each Ca2+ ion and in the complete monolayer the molecules are vertically oriented to the surface. Maximum efficacy is expected at the monomolecular coverage of the surface, but the methods utilized to determine this concentration yielded different results. Stearic acid surface treatment of CaCO3 decreases its surface tension and the effect is more pronounced on the polar than on the dispersion component. The change in the surface characteristics of the filler influences also the properties of the composites in which they are used.

Original languageEnglish
Pages (from-to)200-208
Number of pages9
JournalJournal of Colloid and Interface Science
Volume135
Issue number1
DOIs
Publication statusPublished - Mar 1 1990

Fingerprint

fillers
particulates
Stearic acid
Minerals
Surface treatment
Fillers
minerals
surface treatment
acids
Molecules
Coupling agents
Surface tension
molecules
Monolayers
Polymers
interfacial tension
Salts
Ions
salts
composite materials

ASJC Scopus subject areas

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

Cite this

@article{185e73e8e7f94037a9d5a049c94d14f4,
title = "Surface modification and characterization of particulate mineral fillers",
abstract = "The efficacy of the surface treatment of particulate fillers depends on the chemical character of the components, on the method and conditions of the treatment, and on the amount of treating agent. To achieve maximum efficacy the coupling agent must be chosen specifically for each polymer/filler pair. Because of its ionic character CaCO3 can be effectively treated with stearic acid, which forms a basic salt on the filler surface. One stearic acid molecule is attached to each Ca2+ ion and in the complete monolayer the molecules are vertically oriented to the surface. Maximum efficacy is expected at the monomolecular coverage of the surface, but the methods utilized to determine this concentration yielded different results. Stearic acid surface treatment of CaCO3 decreases its surface tension and the effect is more pronounced on the polar than on the dispersion component. The change in the surface characteristics of the filler influences also the properties of the composites in which they are used.",
author = "E. Fekete and B. Puk{\'a}nszky and A. T{\'o}th and I. Bert{\'o}ti",
year = "1990",
month = "3",
day = "1",
doi = "10.1016/0021-9797(90)90300-D",
language = "English",
volume = "135",
pages = "200--208",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Academic Press Inc.",
number = "1",

}

TY - JOUR

T1 - Surface modification and characterization of particulate mineral fillers

AU - Fekete, E.

AU - Pukánszky, B.

AU - Tóth, A.

AU - Bertóti, I.

PY - 1990/3/1

Y1 - 1990/3/1

N2 - The efficacy of the surface treatment of particulate fillers depends on the chemical character of the components, on the method and conditions of the treatment, and on the amount of treating agent. To achieve maximum efficacy the coupling agent must be chosen specifically for each polymer/filler pair. Because of its ionic character CaCO3 can be effectively treated with stearic acid, which forms a basic salt on the filler surface. One stearic acid molecule is attached to each Ca2+ ion and in the complete monolayer the molecules are vertically oriented to the surface. Maximum efficacy is expected at the monomolecular coverage of the surface, but the methods utilized to determine this concentration yielded different results. Stearic acid surface treatment of CaCO3 decreases its surface tension and the effect is more pronounced on the polar than on the dispersion component. The change in the surface characteristics of the filler influences also the properties of the composites in which they are used.

AB - The efficacy of the surface treatment of particulate fillers depends on the chemical character of the components, on the method and conditions of the treatment, and on the amount of treating agent. To achieve maximum efficacy the coupling agent must be chosen specifically for each polymer/filler pair. Because of its ionic character CaCO3 can be effectively treated with stearic acid, which forms a basic salt on the filler surface. One stearic acid molecule is attached to each Ca2+ ion and in the complete monolayer the molecules are vertically oriented to the surface. Maximum efficacy is expected at the monomolecular coverage of the surface, but the methods utilized to determine this concentration yielded different results. Stearic acid surface treatment of CaCO3 decreases its surface tension and the effect is more pronounced on the polar than on the dispersion component. The change in the surface characteristics of the filler influences also the properties of the composites in which they are used.

UR - http://www.scopus.com/inward/record.url?scp=0025402099&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025402099&partnerID=8YFLogxK

U2 - 10.1016/0021-9797(90)90300-D

DO - 10.1016/0021-9797(90)90300-D

M3 - Article

VL - 135

SP - 200

EP - 208

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

IS - 1

ER -