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Aggregation phenomena in the suspension polymerization of PVC

Diamantopoulos Evaggelos, Zoubourtikoudis I., Kiparissides, Costas

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/7379F72F-B3E8-43A4-B46B-D84E4439E702-
Αναγνωριστικόhttps://doi.org/10.1007/BF01411673-
Αναγνωριστικόhttps://link.springer.com/article/10.1007/BF01411673-
Γλώσσαen-
Μέγεθος9 pagesen
ΤίτλοςAggregation phenomena in the suspension polymerization of PVCen
ΔημιουργόςDiamantopoulos Evaggelosen
ΔημιουργόςΔιαμαντοπουλος Ευαγγελοςel
ΔημιουργόςZoubourtikoudis I.en
ΔημιουργόςKiparissides, Costasen
ΕκδότηςSpringer Verlagen
ΠερίληψηIn the suspension polymerization of VCM, insoluble polymer particles are formed inside the monomer droplets. The growth and aggregation of these particles are responsible for important polymer properties, such as porosity. It is well established that the most characteristic polymer particles, the primary particles, are of a narrow distribution with a size (diameter) ranging from 0.10–0.20 μm. This work studied the formation of primary particles based on the aggregation phenomena that take place inside a monomer droplet. This was done by formulating a population balance equation, which was based on the following considerations: a) polymerization occurs in both the monomer and the polymer phases; b) there is continuous formation of the basic particles in the monomer phase; c) the growth of the polymer particles occurs as a result of both polymerization in the polymer phase and aggregation of the particles; d) the colloidal properties of the particles that are responsible for the aggregation phenomena were considered to be the net result of attraction and repulsion energies. It was shown that for particles carrying a constant charge it was not possible to predict the formation of primary particles of size 0.10–0.20 μm. The particle size distribution had a mode diameter equal to the diameter of the basic particles. Consequently, the particle charge was allowed to vary in a way proportional to the particle radius raised to a power coefficient. For values of the coefficient greater than zero, i. e., when the particle charge increased during polymerization, the aggregation of the basic particles was efficient enough to result in the formation of large primary particles.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-11-18-
Ημερομηνία Δημοσίευσης2015-
Θεματική ΚατηγορίαPolymerisationen
Θεματική ΚατηγορίαPolymers--Synthesisen
Θεματική ΚατηγορίαPolymers and polymerizationen
Θεματική ΚατηγορίαSynthesis of polymersen
Θεματική Κατηγορίαpolymerizationen
Θεματική Κατηγορίαpolymerisationen
Θεματική Κατηγορίαpolymers synthesisen
Θεματική Κατηγορίαpolymers and polymerizationen
Θεματική Κατηγορίαsynthesis of polymersen
Βιβλιογραφική ΑναφοράE. Diamadopoulos, I. Zoubourtikoudis and C. Kiparissides, "Aggregation phenomena in the suspension polymerization of VCM," Colloid. Polym. Sci., vol. 268, no. 4, pp. 306-314, Apr. 1990. doi: 10.1007/BF01411673en

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