Synthesis of poly(vinylidene chloride)-based composite latexes by emulsion polymerization from epoxy functional seeds for improved thermal stability

Poly(glycidyl methacrylate- co-butyl methacrylate)/poly(vinylidene chloride- co-methyl acrylate) (poly(GMA- co-BMA)/poly(VDC- co-MA)) composite latexes have been successfully synthesized via a two-stage emulsion polymerization process. In a first step, emulsion copolymerization of GMA and BMA was ca...

Full description

Saved in:
Bibliographic Details
Published in:Polymer degradation and stability 2012-02, Vol.97 (2), p.170-177
Main Authors: Garnier, Jérôme, Dufils, Pierre-Emmanuel, Vinas, Jérôme, Vanderveken, Yves, van Herk, Alex, Lacroix-Desmazes, Patrick
Format: Article
Language:English
Subjects:
Applied sciences
Chemical Sciences
Chlorides
Composites
Copolymerization
Emulsion polymerization
emulsions
encapsulation
epoxides
Exact sciences and technology
hydrolysis
Latex
molecular weight
Organic polymers
particle size
Particulate composites
Physicochemistry of polymers
Poly(vinylidene chloride)
Polymerization
Polymers
Polyvinylidene chlorides
Preparation, kinetics, thermodynamics, mechanism and catalysts
Seeds
sodium pyrophosphate
temperature
Thermal properties
thermal stability
thermogravimetry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Poly(glycidyl methacrylate- co-butyl methacrylate)/poly(vinylidene chloride- co-methyl acrylate) (poly(GMA- co-BMA)/poly(VDC- co-MA)) composite latexes have been successfully synthesized via a two-stage emulsion polymerization process. In a first step, emulsion copolymerization of GMA and BMA was carried out in optimized conditions (low temperature, neutral pH, starved-feed conditions) to both limit the hydrolysis of epoxy groups and obtain small particle size (typically 30–50 nm size range). Composite latexes were then obtained by a second-stage seeded copolymerization of VDC and MA in the presence of tetrasodium pyrophosphate to control the pH and reach high molecular weight, leading to partial encapsulation of the seed particles (snow-man morphology, in agreement with theoretical expectations). Thermogravimetric analyses performed on the resulting composite particles showed that the epoxy-functionalized seed polymer behaved as an efficient thermal stabilizer of PVDC.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2011.10.019