شماره ركورد كنفرانس :
4518
عنوان مقاله :
Effect of Multi acrylate Crosslinkers on Rheological Properties of Poly Acrylate Microgels
Author/Authors :
H Eshaghi Department of Chemistry - Karaj Branch - Islamic Azad University, Karaj , H Bouhendi Iran Polymer and Petrochemical Institute (IPPI), Tehran , G Bagheri Marandi Department of Chemistry - Karaj Branch - Islamic Azad University, Karaj , M.J ZohurianMehr Iran Polymer and Petrochemical Institute (IPPI), Tehran , K Kabiri Iran Polymer and Petrochemical Institute (IPPI), Tehran
كليدواژه :
Multi Functional Crosslinkers , Reheological Properties , Polyacrylate Microgels
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
Poly(acrylic acid) microgels were prepared by using multiacrylates crosslinkers by precipitation
polymerization. In all systems a constant concentration of a multifunction crosslinker such as 1,6
hexanediol diacrylate (HDDA), trimethylolpropane triacrylate (TMPTA) and
di(trimethylolpropane) tetraacrylate (DTMPTA) was employed. Provided stability was shown by
the strain sweeps tests performed using DTMPTA as multi fanctional crosslinker. Analysis of the
G′ and G″ vs frequency curves gave information about the viscoelastic properties of samples. The
strength of polymer network is increased by increasing the functionality of cross-linkers. The
rotational viscosity results supported the pseudoplastic behavior of samples synthesized. The
elasticity theory was used to discuss the network structure of polymer and calculeted the number
(of crosslinker sites per unit volume (ν.
