Adsorption of cationic starch on cellulose studied by QCM-D

Katri S. Kontturi (Corresponding Author), Tekla Tammelin, Leena-Sisko Johansson, Per Stenius

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)

Abstract

The adsorption of cationic starch (CS) from aqueous electrolyte solutions onto model cellulose film has been investigated by the quartz crystal microbalance with dissipation monitoring (QCM-D) and X-ray photoelectron spectroscopy (XPS). The influence of the electrolyte composition and charge density of CS was examined. The adsorption of CS onto cellulose followed the general trends expected for polyelectrolyte adsorption on oppositely charged surfaces, with some exceptions. Thus, as result of the very low surface charge density of the cellulose surface, highly charged CS did not adsorb in a flat conformation even at low ionic strength. The porosity of the film, however, enabled the penetration of coiled CS molecules into the film at high electrolyte concentrations. Differences between the adsorption behavior of CS on cellulose and earlier observations of the adsorption of the same starches on silica could be explained by the different morphologies and acidities of the hydroxyl groups on the two surfaces.
Original languageEnglish
Pages (from-to)4743-4749
JournalLangmuir
Volume24
Issue number9
DOIs
Publication statusPublished - 2008
MoE publication typeNot Eligible

Fingerprint

starches
Quartz crystal microbalances
quartz crystals
Starch
cellulose
Cellulose
microbalances
dissipation
Adsorption
adsorption
Monitoring
Electrolytes
electrolytes
Charge density
Cellulose films
Surface charge
Ionic strength
Polyelectrolytes
Acidity
acidity

Cite this

Kontturi, Katri S. ; Tammelin, Tekla ; Johansson, Leena-Sisko ; Stenius, Per. / Adsorption of cationic starch on cellulose studied by QCM-D. In: Langmuir. 2008 ; Vol. 24, No. 9. pp. 4743-4749.
@article{a3f212255aa64049973079c20c778032,
title = "Adsorption of cationic starch on cellulose studied by QCM-D",
abstract = "The adsorption of cationic starch (CS) from aqueous electrolyte solutions onto model cellulose film has been investigated by the quartz crystal microbalance with dissipation monitoring (QCM-D) and X-ray photoelectron spectroscopy (XPS). The influence of the electrolyte composition and charge density of CS was examined. The adsorption of CS onto cellulose followed the general trends expected for polyelectrolyte adsorption on oppositely charged surfaces, with some exceptions. Thus, as result of the very low surface charge density of the cellulose surface, highly charged CS did not adsorb in a flat conformation even at low ionic strength. The porosity of the film, however, enabled the penetration of coiled CS molecules into the film at high electrolyte concentrations. Differences between the adsorption behavior of CS on cellulose and earlier observations of the adsorption of the same starches on silica could be explained by the different morphologies and acidities of the hydroxyl groups on the two surfaces.",
author = "Kontturi, {Katri S.} and Tekla Tammelin and Leena-Sisko Johansson and Per Stenius",
year = "2008",
doi = "10.1021/la703604j",
language = "English",
volume = "24",
pages = "4743--4749",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "9",

}

Adsorption of cationic starch on cellulose studied by QCM-D. / Kontturi, Katri S. (Corresponding Author); Tammelin, Tekla; Johansson, Leena-Sisko; Stenius, Per.

In: Langmuir, Vol. 24, No. 9, 2008, p. 4743-4749.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Adsorption of cationic starch on cellulose studied by QCM-D

AU - Kontturi, Katri S.

AU - Tammelin, Tekla

AU - Johansson, Leena-Sisko

AU - Stenius, Per

PY - 2008

Y1 - 2008

N2 - The adsorption of cationic starch (CS) from aqueous electrolyte solutions onto model cellulose film has been investigated by the quartz crystal microbalance with dissipation monitoring (QCM-D) and X-ray photoelectron spectroscopy (XPS). The influence of the electrolyte composition and charge density of CS was examined. The adsorption of CS onto cellulose followed the general trends expected for polyelectrolyte adsorption on oppositely charged surfaces, with some exceptions. Thus, as result of the very low surface charge density of the cellulose surface, highly charged CS did not adsorb in a flat conformation even at low ionic strength. The porosity of the film, however, enabled the penetration of coiled CS molecules into the film at high electrolyte concentrations. Differences between the adsorption behavior of CS on cellulose and earlier observations of the adsorption of the same starches on silica could be explained by the different morphologies and acidities of the hydroxyl groups on the two surfaces.

AB - The adsorption of cationic starch (CS) from aqueous electrolyte solutions onto model cellulose film has been investigated by the quartz crystal microbalance with dissipation monitoring (QCM-D) and X-ray photoelectron spectroscopy (XPS). The influence of the electrolyte composition and charge density of CS was examined. The adsorption of CS onto cellulose followed the general trends expected for polyelectrolyte adsorption on oppositely charged surfaces, with some exceptions. Thus, as result of the very low surface charge density of the cellulose surface, highly charged CS did not adsorb in a flat conformation even at low ionic strength. The porosity of the film, however, enabled the penetration of coiled CS molecules into the film at high electrolyte concentrations. Differences between the adsorption behavior of CS on cellulose and earlier observations of the adsorption of the same starches on silica could be explained by the different morphologies and acidities of the hydroxyl groups on the two surfaces.

UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-44249117407&doi=10.1021%2fla703604j&partnerID=40&md5=4857e3e37f271e815c81e2fd658fad59

U2 - 10.1021/la703604j

DO - 10.1021/la703604j

M3 - Article

VL - 24

SP - 4743

EP - 4749

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 9

ER -