Preparation and Characterization of Montmorillonite/Polypyrrole Nanocomposites by In-Situ Chemical Polymerization

Gao, Jing-Wei; Li, Guang; Yao, Yin‐Fang; Jiang, Jianming

doi:10.1080/00222348.2010.497688

Cited by 12 publications

(8 citation statements)

References 19 publications

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“…DBSA may be related to the better dispersion, higher aspect ratio and larger surface area of the nanostructured conductive additive, which result in a more effective interaction between the phases. Furthermore, the clay layer dispersion in the PU matrix leads to improvements in the tensile strength and elasticity modulus 19 . It is important to highlight that mixtures containing 20 and 25 wt % of MMt-PPy.DBSA and PPy.…”

Section: Resultsmentioning

confidence: 99%

“…Several studies have been reported on the synthesis of nanostructured conductive fillers based on MMt-PPy 10,11,17,18 and its use as a conductive filler for an insulating polymer matrix [19][20] . However, few authors 21 have reported the preparation of MMt-PPy-filled nanocomposites for application in electromagnetic shielding, or discussed the correlation between the structure and the electromagnetic shielding properties of such nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Conductive Composites Based on Polyurethane and Nanostructured Conductive Filler of Montmorillonite/Polypyrrole for Electromagnetic Shielding Applications

et al. 2018

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In this study, composites based on polyurethane (PU) derived from castor oil and montmorillonite/ polypyrrole doped with dodecylbenzenesulfonic acid (MMt-PPy.DBSA) were developed. In order to investigate the potential use of these materials for electromagnetic shielding applications, the electrical and mechanical properties of PU/MMt-PPy.DBSA composites were determined and compared with composites containing neat PPy.DBSA. The electrical conductivity of PU/MMt-PPy.DBSA composites was found to be higher than those for PU/PPy.DBSA with a similar filler content. Additionally, with a higher conductive additive content, significant increases in the tensile stress (σ) and elastic modulus (E) were observed, suggesting that MMt-PPy.DBSA acts as reinforcing agent for the PU matrix. The electromagnetic interference shielding effectiveness (EMI SE) of composites is mainly dependent on the morphology and filler content. The PU/MMt-PPy.DBSA composite containing 25 wt % of MMt-PPy.DBSA showed a maximum EMI SE of-21 dB, which is similar to the value required for commercial applications (-20 dB). The results revealed that PU/MMt-PPy.DBSA composites are promising materials for electromagnetic shielding applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conductive Composites Based on Polyurethane and Nanostructured Conductive Filler of Montmorillonite/Polypyrrole for Electromagnetic Shielding Applications

et al. 2018

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“…In this paper, we presented a facile method for the synthesis of PPy doped with ASPB (PPy/ASPB nanocomposite) by in situ chemical oxidative polymerization [21,22]. For comparison, PPy was synthesized first.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polypyrrole doped with anionic spherical polyelectrolyte brushes

Na¹,

Li²,

Yuan³

et al. 2012

Express Polym. Lett.

173

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Abstract. The procedures for the synthesis of polypyrrole (PPy) doped with anionic spherical polyelectrolyte brushes (ASPB) (PPy/ASPB nanocomposite) by means of in situ chemical oxidative polymerization were presented. Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopic analysis suggested the bonding structure of PPy/ASPB nanocomposite. Scanning electron microscopy (SEM) was used to confirm the morphologies of samples. The crystallographic structure, chemical nature and thermal stability of conducting polymers were analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Thermo-gravimetric analysis (TGA) respectively. Investigation of the electrical conductivity at room temperature showed that the electrical conductivity of PPy/ASPB nanocomposite was 20 S/cm, which was higher than that of PPy (3.6 S/cm).

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“…PPy presents Raman peaks at 931, 1060, 1094 cm À1 corresponding to CÀH ring deformation vibration, [60,61] the peak at 1248 cm À1 corresponding to CÀH in-plane bending vibration, [62] and the peaks at 1359, 1497 and 1579 cm À1 corresponding to CÀN stretching vibration, CÀC stretching vibration and C=C stretching vibration, respectively. [62,63] PPyÀRu and PPy display the similar characteristic Raman peaks. The lower wavenumber shift from 1094 and 1497 cm À1 for PPy to 1081 and 1481 cm À1 for PPyÀRu indicates that the tensile stress causes the longer band length of CÀH ring deformation vibration and CÀC stretching vibration.…”

Section: Confirmation Of Metallic-coordinated Ppymentioning

confidence: 85%

Electrochemical Performance of Transition Metal‐Coordinated Polypyrrole: A Mini Review

Xie

2019

The Chemical Record

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The conductive polymer of polypyrrole can be acted as electroactive electrode material of supercapacitor due to reversible redox behavior and high capacitance. It usually suffers from low electrochemical stability due to the breakdown of polymer molecule chain in the long‐term charge and discharge process. The monometallic or bimetallic‐coordinated polypyrrole usually exhibits the improved electrochemical performance. The transition metal ions such as ruthenium, iron, copper and cobalt are adopted for the coordination modification. The transition metal‐coordinated polypyrrole includes the intrachain and interchain coordination structure between transition metal ion and nitrogen atom of pyrrole ring. It is able to reinforce the polymer molecule chain strength to overcome excessive volumetric swelling and shrinking during charge‐discharge process, improving the cycling stability and rate capability of polypyrrole. Accordingly, the transition metal‐coordinated polypyrrole keeps simultaneously high capacitance performance and electrochemical stability, acting as the promising conductive polymer‐based supercapacitor electrode material for effective energy storage.

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Preparation and Characterization of Montmorillonite/Polypyrrole Nanocomposites by In-Situ Chemical Polymerization

Cited by 12 publications

References 19 publications

Conductive Composites Based on Polyurethane and Nanostructured Conductive Filler of Montmorillonite/Polypyrrole for Electromagnetic Shielding Applications

Conductive Composites Based on Polyurethane and Nanostructured Conductive Filler of Montmorillonite/Polypyrrole for Electromagnetic Shielding Applications

Synthesis and characterization of polypyrrole doped with anionic spherical polyelectrolyte brushes

Electrochemical Performance of Transition Metal‐Coordinated Polypyrrole: A Mini Review

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