Polymer particle growth and morphology evolution during dispersion polymerization through optical microscopy

The paper is focused on the growth of polystyrene particles followed by optical microscopy during dispersion polymerization (DP) in the absence of crosslinking agents. In particular, we compared the growth kinetics of the particles and their tendency to coagulation in alcoholic media in the presence...

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Bibliographic Details
Published in:Colloid and polymer science 2022-06, Vol.300 (6), p.625-640
Main Authors: Sankova, N., Vyvdenko, D., Luzina, E., Shestakova, D., Babina, K., Malakhova, Y., Yakush, E., Parkhomchuk, E.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Coagulation
Complex Fluids and Microfluidics
Crosslinking
Drops (liquids)
Food Science
Hydroxypropyl cellulose
Microscopes
Microscopy
Morphology
Nanotechnology and Microengineering
Neural networks
Optical microscopy
Original Contribution
Particle size distribution
Physical Chemistry
Polyacrylic acid
Polymer Sciences
Polymerization
Polystyrene resins
Polyvinyl alcohol
Polyvinylpyrrolidone
Soft and Granular Matter
Stabilizers (agents)
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Summary:The paper is focused on the growth of polystyrene particles followed by optical microscopy during dispersion polymerization (DP) in the absence of crosslinking agents. In particular, we compared the growth kinetics of the particles and their tendency to coagulation in alcoholic media in the presence of a steric stabilizer, chosen from one of the following: polyvinylpyrrolidone (PVP-40, PVP-10, PVP-360), hydroxypropyl cellulose (HPC), poly(acrylic acid) (PAA), and polyvinyl alcohol (PVA). The particle size distributions from the optical microscopy images were obtained using trained neural network. To predict the particles’ growth at the first few hours after microphase separation, we suggest to adopt a simple model describing the coalescence of liquid drops in immiscible fluids. Based on this model, we discuss the possible approaches for the preparation routes of the particles with non-spherical morphology.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-022-04972-4