Interactions of Hydrophobically Modified Polyvinylamines: Adsorption Behavior at Charged Surfaces and the Formation of Polyelectrolyte Multilayers with Polyacrylic Acid

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Search: onr:"swepub:oai:DiVA.org:kth-19236" > Interactions of Hyd...

1 of 1
Previous record
Next record
To hitlist

Details
MARC

Illergård, JosefinKTH,Fiber- och polymerteknologi (author)

Interactions of Hydrophobically Modified Polyvinylamines : Adsorption Behavior at Charged Surfaces and the Formation of Polyelectrolyte Multilayers with Polyacrylic Acid

Article/chapterEnglish2010

Publisher, publication year, extent ...

2010-01-15
American Chemical Society (ACS),2010
printrdacarrier

Numbers

LIBRIS-ID:oai:DiVA.org:kth-19236
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-19236URI
https://doi.org/10.1021/am9006879DOI

Supplementary language notes

Language:English
Summary in:English

Part of subdatabase

SwePubSwePub

Classification

Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

QC 20110210
The structure and adsorption behaviors of two types of hydrophobically modified polyvinylamines (PVAm) containing substituents of hexyl and octyl chains were compared to a native polyvinylamine sample. The conformation of dissolved polyvinylamines was studied in aqueous salt solutions using dynamic light scattering. Modified PVAm showed hydrodynamic diameters similar to native PVAm, which indicated that all PVAm polymers were present as single molecules in solution. The adsorption of the polyvinylamines, both native and hydrophobically modified, from aqueous solution onto negatively charged silica surfaces was studied in situ by reflectometry and quartz crystal microgravimetry with dissipation. Polyelectrolyte multilayers; (PEM) with up to nine individual layers were formed together with poly(acrylic acid). Obtained PEM structures were rigid and showed high adsorbed amounts combined with low dissipation, with similar results for both the modified and unmodified PVAm. This suggests that electrostatics dominated the PEM formation. At lower salt concentrations, the hydrophobically modified PVAm produced multilayers with low water contents, indicating that secondary interactions induced by the hydrophobic constituents can also have a significant influence on the properties of the formed layers. The surface structure of PEMs with nine individual layers was imaged in dry state using atomic force microscopy in a dynamic mode. Modified PVAm was found to induce a different structure of the PEM at 100 mM, with larger aggregates compared to those of native PVAm. From these results, it is proposed that modified PVAm can induce aggregation within the PEM, whereas PVAm remains as single molecules in solution.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Materialteknik Pappers-, massa- och fiberteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Paper, Pulp and Fiber Technology hsv//eng
polyvinylamine
hydrophobical modification
poly(acrylic acid)
polyelectrolyte multilayers
reflectometry
quartz crystal microbalance
amphiphilic polyelectrolytes
weak polyelectrolytes
qcm-d
silica
frequency
cellulose
kinetics
fibers
layers
setup
Cellulose and paper engineering
Cellulosa- och pappersteknik

Added entries (persons, corporate bodies, meetings, titles ...)

Enarsson, Lars-ErikKTH,Fiber- och polymerteknologi(Swepub:kth)u14kkow4 (author)
Wågberg, LarsKTH,Fiber- och polymerteknologi(Swepub:kth)u14jbte3 (author)
Ek, MonicaKTH,Fiber- och polymerteknologi(Swepub:kth)u1hylg9m (author)
KTHFiber- och polymerteknologi (creator_code:org_t)

Related titles

In:ACS Applied Materials & Interfaces: American Chemical Society (ACS)2:2, s. 425-4331944-82441944-8252

Internet link

Find in a library

ACS Applied Materials & Interfaces (Search for host publication in LIBRIS)

To the university's database

1 of 1
Previous record
Next record
To hitlist

Find more in SwePub

By the author/editor: Illergård, Josef ...; Enarsson, Lars-E ...; Wågberg, Lars; Ek, Monica

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Paper Pulp and F ...

Articles in the publication: ACS Applied Mate ...

By the university: Royal Institute of Technology

Search outside SwePub

Extend your search to:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se