Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/38727

TitleNonsolvent induced phase separation preparation of poly(vinylidene fluoride-co-chlorotrifluoroethylene) membranes with tailored morphology, piezoelectric phase content and mechanical properties
Author(s)Cardoso, Vanessa Fernandes
Botelho, Gabriela
Lanceros-Méndez, S.
KeywordsPoly(vinylidene fluoride-chlorotrifluoroethylene)
P(VDF-CTFE)
Nonsolvent induced phase separation -
NIPS
Tailored microstructure
Crystalline phases
Mechanical properties
Poly(vinylidene fluoride-chlorotrifluoroethylene) - P(VDF-CITE)
Nonsolvent induced phase separation - NIPS
Poly(vinylidene fluoride-chlorotrifluoroethylene) - P(VDF-CTFE)
Issue date2015
PublisherElsevier
JournalMaterials and Design
CitationCardoso V. F., G. Botelho, S. Lanceros-Méndez, Nonsolvent induced phase separation preparation of poly(vinylidene fluoride-co-chlorotrifluoroethylene) membranes with tailored morphology, piezoelectric phase content and mechanical properties, Materials & Design, Volume 88, 25 December 2015, Pages 390-397, ISSN 0264-1275, http://dx.doi.org/10.1016/j.matdes.2015.09.018.
Abstract(s)Poly(vinylidene fluoride-co-chlorotrifluoroethylene) – P(VDF-CTFE) membranes are increasingly interesting for a wide range of applications, including battery separators, filtration membranes and biomedical applications. This work reports on the morphology, hydrophobicity, thermal and mechanical properties variation of P(VDF-CTFE) membranes processed by nonsolvent induced phase separation technique (NIPS) as a function of the main processing parameters. All membranes show a porous structure composed of large spherulites, (interconnected) micropores and/or microvoids depending on the processing conditions used that in turn affect their hydrophobicity and mechanical properties. The degree of crystallinity of the membranes remains approximately constant with a value of about 15 %, except for the membranes immediately immersed in ethanol, which is of about 23 %. In turn, the crystalline phases present in the copolymer is mainly affected by the temperature and nonsolvent characteristics of the coagulation bath, the β-phase content ranging from 33 to 100 %, depending on those processing parameters. It was show that the temperature of water-based coagulation bath plays an important role in order to produce structurally uniform and homogeneous porous membranes, which is particularly important from the point of view of technological applications.
TypeArticle
URIhttp://hdl.handle.net/1822/38727
DOI10.1016/j.matdes.2015.09.018
ISSN0264-1275
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)
CDQuim - Artigos (Papers)
DEI - Artigos em revistas internacionais

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