Polypyrrole-montmorillonite nanocomposites synthesized by emulsion polymerization

S. H. Hong; B. H. Kim; J. Joo; J. W. Kim; Hyung J. Choi

doi:10.1016/S1567-1739(01)00056-6

Polypyrrole-montmorillonite nanocomposites synthesized by emulsion polymerization

S. H. Hong, B. H. Kim, J. Joo, J. W. Kim, Hyung J. Choi

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

The structural, electrical, magnetic, and thermal properties were investigated for the nanocomposites of polypyrrole (PPy) and inorganic clay (Na⁺-montmorillonite) prepared by emulsion polymerization. Dodecylbenzenesulfonic acid (DBSA) was used as emulsifier (surfactant) and dopant. The X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM) images showed that the conducting PPy was intercalated into the clay layers in nanoscale (<10 Å). The dc conductivity (σ_dc) of PPy-DBSA with clay was ~6 S/cm, while that of PPy-DBSA without clay was ~20 S/cm at room temperature (RT). Temperature dependence of σ_dc of both samples followed the three dimensional variable range hopping (VRH) model. From the g-value and the temperature dependence of EPR linewidth, paramagnetic signals were strongly affected by the partially negatively charged clay layers. The thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) showed that the clay induced the thermal stability of the systems.

Original language	English
Pages (from-to)	447-450
Number of pages	4
Journal	Current Applied Physics
Volume	1
Issue number	6
DOIs	https://doi.org/10.1016/S1567-1739(01)00056-6
Publication status	Published - 2001 Dec
Externally published	Yes

Keywords

61.46.+w
71.20.Rv
72.16.Cz
81.07.Pr
82.35.Cd
Conductivity
EPR
Polypyrrole
Polypyrrole- Na -montmorillonite
X-ray diffraction

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

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10.1016/S1567-1739(01)00056-6

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title = "Polypyrrole-montmorillonite nanocomposites synthesized by emulsion polymerization",

abstract = "The structural, electrical, magnetic, and thermal properties were investigated for the nanocomposites of polypyrrole (PPy) and inorganic clay (Na+-montmorillonite) prepared by emulsion polymerization. Dodecylbenzenesulfonic acid (DBSA) was used as emulsifier (surfactant) and dopant. The X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM) images showed that the conducting PPy was intercalated into the clay layers in nanoscale (<10 {\AA}). The dc conductivity (σdc) of PPy-DBSA with clay was ~6 S/cm, while that of PPy-DBSA without clay was ~20 S/cm at room temperature (RT). Temperature dependence of σdc of both samples followed the three dimensional variable range hopping (VRH) model. From the g-value and the temperature dependence of EPR linewidth, paramagnetic signals were strongly affected by the partially negatively charged clay layers. The thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) showed that the clay induced the thermal stability of the systems.",

keywords = "61.46.+w, 71.20.Rv, 72.16.Cz, 81.07.Pr, 82.35.Cd, Conductivity, EPR, Polypyrrole, Polypyrrole- Na -montmorillonite, X-ray diffraction",

author = "Hong, {S. H.} and Kim, {B. H.} and J. Joo and Kim, {J. W.} and Choi, {Hyung J.}",

note = "Funding Information: This work was supported in part by the Korea Research Foundation (KRF) made program in 2000 (2000-015-DP0093). ",

year = "2001",

month = dec,

doi = "10.1016/S1567-1739(01)00056-6",

language = "English",

volume = "1",

pages = "447--450",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier",

number = "6",

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TY - JOUR

T1 - Polypyrrole-montmorillonite nanocomposites synthesized by emulsion polymerization

AU - Hong, S. H.

AU - Kim, B. H.

AU - Joo, J.

AU - Kim, J. W.

AU - Choi, Hyung J.

N1 - Funding Information: This work was supported in part by the Korea Research Foundation (KRF) made program in 2000 (2000-015-DP0093).

PY - 2001/12

Y1 - 2001/12

N2 - The structural, electrical, magnetic, and thermal properties were investigated for the nanocomposites of polypyrrole (PPy) and inorganic clay (Na+-montmorillonite) prepared by emulsion polymerization. Dodecylbenzenesulfonic acid (DBSA) was used as emulsifier (surfactant) and dopant. The X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM) images showed that the conducting PPy was intercalated into the clay layers in nanoscale (<10 Å). The dc conductivity (σdc) of PPy-DBSA with clay was ~6 S/cm, while that of PPy-DBSA without clay was ~20 S/cm at room temperature (RT). Temperature dependence of σdc of both samples followed the three dimensional variable range hopping (VRH) model. From the g-value and the temperature dependence of EPR linewidth, paramagnetic signals were strongly affected by the partially negatively charged clay layers. The thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) showed that the clay induced the thermal stability of the systems.

AB - The structural, electrical, magnetic, and thermal properties were investigated for the nanocomposites of polypyrrole (PPy) and inorganic clay (Na+-montmorillonite) prepared by emulsion polymerization. Dodecylbenzenesulfonic acid (DBSA) was used as emulsifier (surfactant) and dopant. The X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM) images showed that the conducting PPy was intercalated into the clay layers in nanoscale (<10 Å). The dc conductivity (σdc) of PPy-DBSA with clay was ~6 S/cm, while that of PPy-DBSA without clay was ~20 S/cm at room temperature (RT). Temperature dependence of σdc of both samples followed the three dimensional variable range hopping (VRH) model. From the g-value and the temperature dependence of EPR linewidth, paramagnetic signals were strongly affected by the partially negatively charged clay layers. The thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) showed that the clay induced the thermal stability of the systems.

KW - 61.46.+w

KW - 71.20.Rv

KW - 72.16.Cz

KW - 81.07.Pr

KW - 82.35.Cd

KW - Conductivity

KW - EPR

KW - Polypyrrole

KW - Polypyrrole- Na -montmorillonite

KW - X-ray diffraction

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U2 - 10.1016/S1567-1739(01)00056-6

DO - 10.1016/S1567-1739(01)00056-6

M3 - Article

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SN - 1567-1739

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EP - 450

JO - Current Applied Physics

JF - Current Applied Physics

IS - 6

ER -

Polypyrrole-montmorillonite nanocomposites synthesized by emulsion polymerization

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Keywords

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