Does dynamic vulcanization induce phase separation?

Abolhasani,MM, Zarejousheghani,F, Naebe,M and Guo,Q 2014, Does dynamic vulcanization induce phase separation?, Soft Matter, vol. 10, no. 30, pp. 5550-5558, doi: 10.1039/c4sm00632a.

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Title Does dynamic vulcanization induce phase separation?
Author(s) Abolhasani,MM
Naebe,MORCID iD for Naebe,M
Guo,QORCID iD for Guo,Q
Journal name Soft Matter
Volume number 10
Issue number 30
Start page 5550
End page 5558
Publisher Royal Society of Chemistry
Place of publication England
Publication date 2014-08
ISSN 1744-6848
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Physical
Materials Science, Multidisciplinary
Physics, Multidisciplinary
Polymer Science
Materials Science
Summary Immiscible and miscible blends of poly(vinylidene fluoride) (PVDF) and acrylic rubber (ACM) were subjected to dynamic vulcanization to investigate the effect of crosslinking on phase separation. As a result of different processability, mixing torque behavior of miscible and immiscible blends was significantly different from one another. Scanning electron microscopy (SEM) was used to investigate the morphology of the system. After dynamic vulcanization, submicron ACM droplets were observed in the samples near the binodal curve of the system under mixing conditions. Small angle X-ray scattering (SAXS) and differential scanning calorimetry (DSC) analysis were used to investigate the effect of dynamic vulcanization on the lamellar structure of the system. It was shown that for samples near the boundary of phase separation, increasing the crosslink density led to a decrease in the lamellar long period (L) as a sign of increment of crosslink density induced phase decomposition. Effects of shear rate on the final morphology of the system were investigated by changing the mixing temperature and by comparing the results of dynamic vulcanization at one phase and two phase regions.
Language eng
DOI 10.1039/c4sm00632a
Field of Research 091202 Composite and Hybrid Materials
091209 Polymers and Plastics
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Royal Society of Chemistry
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