Nanocomposites prepared from acrylonitrile-butadiene rubber and organically modified montmorillonite with vinyl groups

Mijeong Han, Hoonjung Kim, Eunkyoung Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Nanocomposites were prepared from acrylonitrile-butadiene rubber (NBR), vinyl groups containing organically modified montmorillonite and additives, such as zinc oxide, stearic acid, and sulfur. The organically modified montmorillonites used in these nanocomposites were prepared by ion exchange reactions of N,N′-dimethylalkyl-(p-vinylbenzyl)-ammonium chlorides (DAVBAs, alkyl ≤ octyl, dodecyl, and octadecyl) with sodium montmorillonite (Na+-MMT). NBR nanocomposites were obtained by controlling both the mixing and vulcanization conditions, by using a Brabender mixer and hot-press process. X-ray diffraction (XRD) analysis shows that, depending on the amount of montmorillonite that is added, both exfoliated and intercalated nanocomposite structures are formed. The NBR/DAVBA-MMT nanocomposites exhibit much higher mechanical properties (e.g., tensile strength, Young's modulus, 300% modulus, and hardness) as well as gas barrier properties as compared to NBR Na +-MMT or NBR composites generated from modified montmorillonites without vinyl groups. Consistent with the results of XRD, transmission electron microscopy (TEM) reveals that the intercalation and exfoliation structures of the nanocomposites coexist and that the DAVBA-MMT layers are well dispersed in NBR.

Original languageEnglish
Pages (from-to)403-409
Number of pages7
JournalNanotechnology
Volume17
Issue number2
DOIs
Publication statusPublished - 2006 Jan 28

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Acrylonitrile
Bentonite
Rubber
Clay minerals
Butadiene
Nanocomposites
Zinc Oxide
Ammonium Chloride
Vulcanization
Stearic acid
Intercalation
Zinc oxide
Sulfur
X ray diffraction analysis
1,3-butadiene
Ion exchange
Tensile strength
Elastic moduli
Gases
Sodium

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

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abstract = "Nanocomposites were prepared from acrylonitrile-butadiene rubber (NBR), vinyl groups containing organically modified montmorillonite and additives, such as zinc oxide, stearic acid, and sulfur. The organically modified montmorillonites used in these nanocomposites were prepared by ion exchange reactions of N,N′-dimethylalkyl-(p-vinylbenzyl)-ammonium chlorides (DAVBAs, alkyl ≤ octyl, dodecyl, and octadecyl) with sodium montmorillonite (Na+-MMT). NBR nanocomposites were obtained by controlling both the mixing and vulcanization conditions, by using a Brabender mixer and hot-press process. X-ray diffraction (XRD) analysis shows that, depending on the amount of montmorillonite that is added, both exfoliated and intercalated nanocomposite structures are formed. The NBR/DAVBA-MMT nanocomposites exhibit much higher mechanical properties (e.g., tensile strength, Young's modulus, 300{\%} modulus, and hardness) as well as gas barrier properties as compared to NBR Na +-MMT or NBR composites generated from modified montmorillonites without vinyl groups. Consistent with the results of XRD, transmission electron microscopy (TEM) reveals that the intercalation and exfoliation structures of the nanocomposites coexist and that the DAVBA-MMT layers are well dispersed in NBR.",
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Nanocomposites prepared from acrylonitrile-butadiene rubber and organically modified montmorillonite with vinyl groups. / Han, Mijeong; Kim, Hoonjung; Kim, Eunkyoung.

In: Nanotechnology, Vol. 17, No. 2, 28.01.2006, p. 403-409.

Research output: Contribution to journalArticle

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