Multifunctional Porous Poly(vinylidene fluoride)-graft-Poly(butyl methacrylate) with Good Li+ Ion Conductivity

Sanjoy Samanta, Dhruba P. Chatterjee, Rama K. Layek, Arun K. Nandi

    Research output: Contribution to journalArticleScientificpeer-review

    38 Citations (Scopus)

    Abstract

    PnBMA is grafted on PVDF using ATRP in NMP solution at 90 degrees C and characterized by means of 1D and 2D NMR. F-19 NMR spectra clearly reveal that the attack occurs on the head-head >CF2 groups. Cast PB films show a honeycomb-patterned porous microstructure, and the "breath-figure" model is used to explain pore formation. FT-IR spectra suggest a supramolecular interaction between >C=O groups of PnBMA and >CF2 groups of PVDF. Storage modulus, loss modulus and stress at break decrease with graft conversion, but the strain at break increases significantly. The toughness of the copolymers also increases dramatically (882%). The porous materials can be applied as solid-state electrolytes (Li+-doped) with good ionic conductivity (10(-5) S.cm(-1)).

    Original languageEnglish
    Pages (from-to)134-149
    Number of pages16
    JournalMacromolecular Chemistry and Physics
    Volume212
    Issue number2
    DOIs
    Publication statusPublished - 18 Jan 2011
    Publication typeA1 Journal article-refereed

    Keywords

    • ATRP
    • graft copolymers
    • Li+ ion conductivity
    • mechanical properties
    • porous morphology
    • TRANSFER RADICAL POLYMERIZATION
    • GRAFT COPOLYMER
    • BREATH FIGURE
    • SURFACE MODIFICATION
    • POLYSTYRENE FILMS
    • CHAIN STRUCTURE
    • FLUORIDE)
    • MEMBRANES
    • POLYMERS
    • ELECTROLYTES

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