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Colloid and Polymer Science
Published in: Colloid and Polymer Science 4/2013

01-04-2013 | Original Contribution

The supramolecular organization of PVDF lamellae formed in diphenyl ketone dilutions via thermally induced phase separation

Authors: Wenzhong Ma, Bo Zhou, Tianyin Liu, Jun Zhang, Xiaolin Wang

Published in: Colloid and Polymer Science | Issue 4/2013

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Abstract

The crystallization of poly(vinylidene fluoride) (PVDF) during thermally induced solid–liquid phase separation leads to supermolecular structures in PVDF/montmorillonite (MMT)/diphenyl ketone dilutions with various poly(methyl methacrylate) (PMMA) contents. The presence of MMT had a significant nucleation enhancement on the β-PVDF crystals along with the MMT surfaces, and subsequently the α-PVDF crystals formed between MMT layers. The mechanism of the PVDF crystallization in the dilution was studied by DSC, POM, FTIR, and SEM results. A small amount of PMMA incorporation (0.3 wt%) improved the dispersion of MMT in the mixture, leading to the highest nucleation effect on the PVDF crystals. This result proves that PMMA chains acted as a good interfacial agent for PVDF and MMT nanoparticles. A well-interconnected supermolecular morphology formed in the dilutions resulted in a higher tensile strength. When the PMMA content was over 1.5 wt% in the dilution, the excessive amorphous PMMA chains would hinder the crystallization of PVDF; subsequently, less interconnected PVDF lamellae structures lowered the tensile strength.
previous article Solvent exchange kinetics in poly(N-isopropylacrylamide) microgel-based etalons
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Metadata
Title
The supramolecular organization of PVDF lamellae formed in diphenyl ketone dilutions via thermally induced phase separation
Authors
Wenzhong Ma
Bo Zhou
Tianyin Liu
Jun Zhang
Xiaolin Wang
Publication date
01-04-2013
Publisher
Springer-Verlag
Published in
Colloid and Polymer Science / Issue 4/2013
Print ISSN: 0303-402X
Electronic ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-012-2820-x

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