Methacrylated dendrimers in thiol-methacrylate networks and the effect of conversion on the thermoset properties

A series of well-defined methacrylate-functionalized polyester dendrimers based on 2,2-bis(methylol)propionic acid (bis-MPA) has been synthesized divergently. The thermal properties and conversion of the methacrylate functional dendrimers are investigated along with the structure-property relationsh...

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Bibliographic Details
Published in:Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 2009-11, Vol.47 (21), p.5815-5826
Main Authors: Nilsson, Camilla, Malmström, Eva, Johansson, Mats, Trey, Stacy M
Format: Article
Language:English
Subjects:
acrylate photopolymerizations
aliphatic polyesters
Applied sciences
behavior
Chemistry
Conversion
Dendrimers
dendritic macromolecules
Differential scanning calorimetry
endrimers
ene
Exact sciences and technology
functionalization
inhibition
Kemi
kinetics
melt viscosity
NATURAL SCIENCES
NATURVETENSKAP
Networks
Organic chemistry
Organisk kemi
oxygen
Photoinitiators
photopolymerization
physical-properties
Physicochemistry of polymers
Polymer chemistry
Polymerization
Polymerkemi
Polymers and radiations
Reproduction
Thermal properties
thermogravimetric analysis
Thermosetting resins
thiol-methacrylate films
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Summary:A series of well-defined methacrylate-functionalized polyester dendrimers based on 2,2-bis(methylol)propionic acid (bis-MPA) has been synthesized divergently. The thermal properties and conversion of the methacrylate functional dendrimers are investigated along with the structure-property relationship of networks composed of the methacrylate dendrimers and two commercially available trifunctional thiols, trimethylolpropane tri(3-mercaptopropanoate) (TRIS) and ethoxylated trimethylolpropane tri(3-mercaptopropanoate) (ETTMP). The thiol-methacrylate reactions were conducted at room temperature, under ambient conditions, and triggered by UV light in the presence of a photoinitiator. Crosslinked films were obtained and characterized with respect to conversion (FT-Raman) and thermal (DSC and TGA) properties.
ISSN:0887-624X
1099-0518
1099-0518
DOI:10.1002/pola.23625