Interpenetrating polymer network composites of polypyrrole and poly (methyl acrylate) or poly (styrene-co-butyl acrylate) with low percolation thresholds

Mandai, Tarun Kumar; Mandai, Broja M.

doi:10.1016/0379-6779(96)80206-2

Cited by 67 publications

(1 citation statement)

References 36 publications

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“…The permeability for the neat PSBA‐30:70 decreased with increasing water vapor activity over the range 0.2 ≤ P / P 0 ≤ 0.6. This trend was associated with the formation of water vapor clusters with increasing vapor concentration gradient which led to reduced permeation rates . The permeability coefficients in the neat PSBA‐30:70 films increased at higher water vapor activity P / P 0 ≥ 0.6.…”

Section: Resultsmentioning

confidence: 98%

Novel Polymer Clay‐Based Nanocomposites: Films with Remarkable Optical and Water Vapor Barrier Properties

Murima

Pfukwa

Tiggelman

et al. 2016

Macro Materials & Eng

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The impact of varying the copolymer composition of styrene–co‐butyl acrylate copolymers on the dispersion of montmorillonite (MMT) clay and the effect thereof on the transparency and water vapor barrier properties of the resultant films is assessed. The hybrid latexes containing MMT clay concentrations of 10–30 wt% are prepared using miniemulsion polymerization. The morphology of the resultant latexes shows that the MMT particles are predominantly adhered onto the surface of the latex particles. However, the transparency of the films suggests a fair dispersion of the MMT platelets in the matrix. The thickness‐normalized light transmittance for copolymers with 40 and 50 mol% styrene only decreases from 70% in the neat films to 50% in the nanocomposite films containing 30 wt% clay. The best optical properties are observed for the copolymers with 30 mol% styrene, in which the light transmittance only decreases from 85% (unfilled film) to 60% in the nanocomposite films containing 30 wt% clay. Overall, the water vapor barrier properties are much higher in the copolymer films with 30 mol% styrene due to the unique morphological organization of MMT platelets in the matrix.

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Section: Resultsmentioning

confidence: 98%

Novel Polymer Clay‐Based Nanocomposites: Films with Remarkable Optical and Water Vapor Barrier Properties

Murima

Pfukwa

Tiggelman

et al. 2016

Macro Materials & Eng

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Conductivity relaxation behavior of interpenetrating polymer network composites of polypyrrole and poly(styrene-co-butyl acrylate)

Bhattacharyya¹,

Saha²,

Chakravorty

2000

J. Polym. Sci. B Polym. Phys.

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Pseudothermoset blends of poly (methyl methacrylate) and polypyrrole morphological, thermal, and conductivity studies

Ashraf

Ahmad

Riaz

2004

J of Applied Polymer Sci

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Blends of poly (methyl methacrylate) (PMMA)/Polypyrrole (PPy) were synthesized by emulsion polymerization of methyl methacrylate (MMA) and in situ oxidative polymerization of pyrrole (Py) with varying concentrations of Py and ferric chloride. The influence of the varying concentrations of ferric chloride, Py, and MMA on the morphological, spectral, thermal, and conductance characteristics of the blends were investigated. Hydrogen bonding between PPy and PMMA was inferred from FTIR studies that indicate blend formation. DSC and TGA analysis of the blends were done. A curious thermal behavior was observed that the blends lost their elasticity and flexibility on heating and turned into rigid and brittle material. DSC thermogram did not show glass transition temperature, indicating molecular and chain reorganization on heating. We have therefore called these blends pseudothermoset. The physicomechanical characteristics of the films of the blends were found to deteriorate with the increased ratio of ferric chloride in the blend, causing a decrease in the conductivity. Maximum conductivity (percolation threshold) was found at 14 wt % loading of Py in the blend (1.6 ϫ 10 Ϫ3 S cm Ϫ1), which was further correlated with the morphology of the films.

show abstract

Interpenetrating polymer network composites of polypyrrole and poly (methyl acrylate) or poly (styrene-co-butyl acrylate) with low percolation thresholds

Cited by 67 publications

References 36 publications

Novel Polymer Clay‐Based Nanocomposites: Films with Remarkable Optical and Water Vapor Barrier Properties

Novel Polymer Clay‐Based Nanocomposites: Films with Remarkable Optical and Water Vapor Barrier Properties

Conductivity relaxation behavior of interpenetrating polymer network composites of polypyrrole and poly(styrene-co-butyl acrylate)

Pseudothermoset blends of poly (methyl methacrylate) and polypyrrole morphological, thermal, and conductivity studies

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