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Fabrication, structures and properties of Acrylonitrile/Vinyl acetate copolymers and copolymers containing microencapsulated phase change materials

Fabrication, structures and properties of Acrylonitrile/Vinyl acetate copolymers and copolymers... Abstract Acrylonitrile(AN)-Vinyl acetate (VAc) copolymers (AN/VAc) were synthesized by redox polymerization and microencapsulated phase change materials (MicroPCMs) were incorporated at the polymerization step. The effect of VAc monomers and/or the MicroPCMs on composition, melting point (T m ), exothermic peak value (T d), average molecular weight (M η ), crystallinity of the copolymers were examined by Fourier Transform Infrared Spectroscopy (FTIR), Elementary Analysis, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TG), Ubbelohde viscosimeter and X-ray Diffraction (XRD). The compositions of the AN/VAc agreed well with the feed ratios. The melting peak shifted to a lower temperature (267 °C) with increasing concentration of VAc monomers and/or MicroPCMs, while the exothermic peak shifted to the higher temperature (324 °C). The average molecular weight of the copolymer was approximately 31,000. The crystallinity of the copolymers decreased with increasing content of VAc monomers and/or MicroPCMs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Macromolecular Research" Springer Journals

Fabrication, structures and properties of Acrylonitrile/Vinyl acetate copolymers and copolymers containing microencapsulated phase change materials

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References (33)

Publisher
Springer Journals
Copyright
2010 The Polymer Society of Korea and Springer Netherlands
ISSN
1598-5032
eISSN
2092-7673
DOI
10.1007/s13233-009-0122-z
Publisher site
See Article on Publisher Site

Abstract

Abstract Acrylonitrile(AN)-Vinyl acetate (VAc) copolymers (AN/VAc) were synthesized by redox polymerization and microencapsulated phase change materials (MicroPCMs) were incorporated at the polymerization step. The effect of VAc monomers and/or the MicroPCMs on composition, melting point (T m ), exothermic peak value (T d), average molecular weight (M η ), crystallinity of the copolymers were examined by Fourier Transform Infrared Spectroscopy (FTIR), Elementary Analysis, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TG), Ubbelohde viscosimeter and X-ray Diffraction (XRD). The compositions of the AN/VAc agreed well with the feed ratios. The melting peak shifted to a lower temperature (267 °C) with increasing concentration of VAc monomers and/or MicroPCMs, while the exothermic peak shifted to the higher temperature (324 °C). The average molecular weight of the copolymer was approximately 31,000. The crystallinity of the copolymers decreased with increasing content of VAc monomers and/or MicroPCMs.

Journal

"Macromolecular Research"Springer Journals

Published: Feb 1, 2010

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