شماره ركورد كنفرانس :
4518
عنوان مقاله :
Secondary nucliation in semibatch emulsion polymerization: effect of secondary feed component on particle size and their distribution
Author/Authors :
Khadijeh Didehban Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran , Iraj Hasanzadeh Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran , Ali Reza Mahdavian Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran , Amjad sazgar Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran , Mohammad Reza Rahnama Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran , Aylar Najafipour Polymer Science Department - Iran Polymer and Petrochemical Institute,Tehran
كليدواژه :
emulsion polymerization , secondary neucliation , bimodal distribution , particle size , latex
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
In this study, polymeric latexes with bimodal distribution in particle size were prepared by
emulsion copolymerization. The effect of monomer and surfactant amounts in the secondary feed
on primary and secondary particle sizes were investigated. The results showed that by control of
monomer and surfactant amounts in the second step of polymerization and after formation of
primary particles, it is possible to prepare bimodal latex particles with desired primary and
secondary particle sizes and their ratio as well. Primary particles were designed with core-shell
structure for application in water base traffic coating and secondary particles had low Tg
composition and molecular weight for decreasing minimum film formation temperature (MFFT) to
formation of continuous film.
