Viscoelastic Behaviour of Butyl Acrylate/Styrene/2-Hydroxyethyl Methacrylate/Acrylic Acid Latices Thickened with Associative Thickeners

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F03%3A00000583" target="_blank" >RIV/00216275:25310/03:00000583 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Viscoelastic Behaviour of Butyl Acrylate/Styrene/2-Hydroxyethyl Methacrylate/Acrylic Acid Latices Thickened with Associative Thickeners

Original language description

The rheological behaviour of butyl acrylate/styrene/crylic acid latices thickened with a hydrophobically modified ethoxylated polyurethane (HEUR) or hydrophobically modified alkali-soluble polyacrylate emulsion (HASE) was investigated. While the pseudoplastic character of frequency dependence of complex viscosity was similar for both thickeners, viscoelastic behavuour, expresed as the ratio of loss and storage moduli, significantly different, indicating that the HEUR molecules, unlike swollen HASE particles, create a viscoelastic space structure. The increase in hydrophilicity of the particle surface, achieved by incorporation of 2-hydroxyethyl methacrylate (HEMA) monomer into the latex copolymer reduced the viscoelasticity of latices thickened with HEUR, but not of those thickened with HASE. This confirms that adsoption of hydrophobic end-groups on particle surface is imposrtant for thickening of latices with HEUR and that a physical network of latex particles interconnected by the th

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Comptes Rendus Chimie

ISSN

1631-0748

e-ISSN

—

Volume of the periodical

Neuveden

Issue of the periodical within the volume

6

Country of publishing house

FR - FRANCE

Number of pages

6

Pages from-to

1411-1416

UT code for WoS article

—

EID of the result in the Scopus database

—