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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The Influence of Rigid and Flexible Monomers on the Physical-Chemical Properties of Polyimides

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da Conceicao, Thiago Ferreira [1] ; Felisberti, Maria Isabel [1]
Total Authors: 2
[1] Univ Campinas UNICAMP, Dept Phys Chem, Inst Chem, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Applied Polymer Science; v. 131, n. 24, SI DEC 15 2014.
Web of Science Citations: 4

This article presents the synthesis and characterization of polyimides and copolyimides derived from rigid {[}4,4 `-(9-fluorenylidene) dianiline (FNDA) and 3,3 `,4,4 `-biphenyltetracarboxylic dianhydride (BPDA)] and flexible segments {[}4,4 `-(1,3-phenylenedioxy) dianiline (PDODA) and ethylenediaminetetraacetic dianhydride (EDTAn)], by polyaddition followed by thermal imidization of the polyamic acid. It describes the characterization of the polyimides and the polyamic acids in accordance to H-1 NMR, FTIR, GPC, and XRD analysis, as well as solubility, mechanical (DMTA and stress-strain tests), thermal (DSC and TGA), and electric properties. Among the homopolymers, FNDA-BPDA and PDODA-BPDA form free-standing films. The first presents higher T-g, thermal stability and Young's modulus. To tailor the properties copolyimides of FNDA, PDODA, and BPDA were synthesized. Young's modulus, T-g, thermal stability, dielectric constant, and solubility progressively increase with increasing amount of FNDA. (C) 2014 Wiley Periodicals, Inc. (AU)

FAPESP's process: 10/17804-7 - Polymeric composites
Grantee:Maria Isabel Felisberti
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 10/02098-0 - Multicomponent polymeric materials
Grantee:Maria Isabel Felisberti
Support Opportunities: Regular Research Grants
FAPESP's process: 10/18268-1 - Preparation and processing of nanocomposites of polyimides with carbon nanotubes and graphen
Grantee:Thiago Ferreira da Conceição
Support Opportunities: Scholarships in Brazil - Post-Doctoral