Synthesis, characterization, and properties of new siloxane grafted copolyimides

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Anindita Ghosh - , Leibniz Institute of Polymer Research Dresden (Author)
  • Susanta Banerjee - , Indian Institute of Technology Kharagpur (Author)
  • De-Yi Wang - , Leibniz Institute of Polymer Research Dresden, Sichuan University (Author)
  • Hartmut Komber - , Leibniz Institute of Polymer Research Dresden (Author)
  • Brigitte Voit - , Chair of Organic Chemistry of Polymers, Leibniz Institute of Polymer Research Dresden (Author)

Abstract

Three new siloxane containing grafted copolyimides have been prepared by one-pot solution imidization technique. The polymers are made by the reaction of 4,4'-(4,4'-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) with commercially available diamine 4,4'-oxydianiline (ODA) with variation of silicon containing diamine, namely 3,5-diaminobenzoate terminated polydimethylsiloxane (DBPDMS), as a comonomer to 10, 20, and 30 wt %. The films of the polymers were prepared by casting the polymer solution in dichloromethane. The polymers have been well-characterized by GPC, IR, and NMR techniques. Thermal stabilities and decomposition behavior of the copolyimides were studied by DSC and TGA. The water contact angle values of the films indicate hydrophobic nature of the polymers. Thermal, flame retardant, mechanical, and surface properties of these polymers have been compared with the homopolyimide and with polyimides where polysiloxane is incorporated in the main chain. DSC revealed melting of the grafted siloxane chain at sub-ambient temperature and a glass transition corresponding to the main polymer chain above 200 degrees C. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Details

Original languageEnglish
Pages (from-to)2959-2967
Number of pages9
JournalJournal of Applied Polymer Science
Volume123
Issue number5
Publication statusPublished - 5 Mar 2012
Peer-reviewedYes

External IDs

Scopus 82455164088
WOS 000298086200046
ORCID /0000-0002-4531-691X/work/148607581

Keywords

Keywords

  • Graft copolymers, Mechanical properties, Polyimides, Polysiloxane, Thermal properties