Polyethylene/MMT nanocomposites prepared by in situ polymerization using supported catalyst systems

Dong Ho Lee; Hyuk Soo Kim; Keun Byoung Yoon; Kyung Eun Min; Kwan Ho Seo; Seok Kyun Noh

doi:10.1016/j.stam.2005.04.004

Polyethylene/MMT nanocomposites prepared by in situ polymerization using supported catalyst systems

Dong Ho Lee, Hyuk Soo Kim, Keun Byoung Yoon, Kyung Eun Min, Kwan Ho Seo, Seok Kyun Noh

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Abstract

A polyethylene/montmorillonite(MMT) nanocomposite was prepared by in situ polymerization method using MMT-supported methylaluminoxane(MAO) cocatalyst and/or Cp₂ZrCl₂ catalyst. The catalyst components had been supported on the unmodified MMT-Na and modified commercial product, Cloisite 25A. With XRD it was found that the layered silicate gallery of Cloisite 25A was exfoliated by incorporating MAO cocatalyst and zirconocene catalyst while the d-spacing of MMT-Na was less changed. The in situ polymerization of ethylene was carried out to prepare the nanocomposite by using the supported MMT, and the fully exfoliated product was obtained with Cloisite 25A. The decomposition temperature of the obtained nanocomposite increased up to 25 °C, but the melting temperature was not improved much.

Original language	English
Pages (from-to)	457-462
Number of pages	6
Journal	Science and Technology of Advanced Materials
Volume	6
Issue number	5
DOIs	https://doi.org/10.1016/j.stam.2005.04.004
State	Published - Jul 2005

Keywords

In situ polymerization
MMT
Nanocomposites
Polyethylene

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10.1016/j.stam.2005.04.004

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title = "Polyethylene/MMT nanocomposites prepared by in situ polymerization using supported catalyst systems",

abstract = "A polyethylene/montmorillonite(MMT) nanocomposite was prepared by in situ polymerization method using MMT-supported methylaluminoxane(MAO) cocatalyst and/or Cp2ZrCl2 catalyst. The catalyst components had been supported on the unmodified MMT-Na and modified commercial product, Cloisite 25A. With XRD it was found that the layered silicate gallery of Cloisite 25A was exfoliated by incorporating MAO cocatalyst and zirconocene catalyst while the d-spacing of MMT-Na was less changed. The in situ polymerization of ethylene was carried out to prepare the nanocomposite by using the supported MMT, and the fully exfoliated product was obtained with Cloisite 25A. The decomposition temperature of the obtained nanocomposite increased up to 25 °C, but the melting temperature was not improved much.",

keywords = "In situ polymerization, MMT, Nanocomposites, Polyethylene",

author = "Lee, {Dong Ho} and Kim, {Hyuk Soo} and Yoon, {Keun Byoung} and Min, {Kyung Eun} and Seo, {Kwan Ho} and Noh, {Seok Kyun}",

year = "2005",

month = jul,

doi = "10.1016/j.stam.2005.04.004",

language = "English",

volume = "6",

pages = "457--462",

journal = "Science and Technology of Advanced Materials",

issn = "1468-6996",

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T1 - Polyethylene/MMT nanocomposites prepared by in situ polymerization using supported catalyst systems

AU - Lee, Dong Ho

AU - Kim, Hyuk Soo

AU - Yoon, Keun Byoung

AU - Min, Kyung Eun

AU - Seo, Kwan Ho

AU - Noh, Seok Kyun

PY - 2005/7

Y1 - 2005/7

N2 - A polyethylene/montmorillonite(MMT) nanocomposite was prepared by in situ polymerization method using MMT-supported methylaluminoxane(MAO) cocatalyst and/or Cp2ZrCl2 catalyst. The catalyst components had been supported on the unmodified MMT-Na and modified commercial product, Cloisite 25A. With XRD it was found that the layered silicate gallery of Cloisite 25A was exfoliated by incorporating MAO cocatalyst and zirconocene catalyst while the d-spacing of MMT-Na was less changed. The in situ polymerization of ethylene was carried out to prepare the nanocomposite by using the supported MMT, and the fully exfoliated product was obtained with Cloisite 25A. The decomposition temperature of the obtained nanocomposite increased up to 25 °C, but the melting temperature was not improved much.

AB - A polyethylene/montmorillonite(MMT) nanocomposite was prepared by in situ polymerization method using MMT-supported methylaluminoxane(MAO) cocatalyst and/or Cp2ZrCl2 catalyst. The catalyst components had been supported on the unmodified MMT-Na and modified commercial product, Cloisite 25A. With XRD it was found that the layered silicate gallery of Cloisite 25A was exfoliated by incorporating MAO cocatalyst and zirconocene catalyst while the d-spacing of MMT-Na was less changed. The in situ polymerization of ethylene was carried out to prepare the nanocomposite by using the supported MMT, and the fully exfoliated product was obtained with Cloisite 25A. The decomposition temperature of the obtained nanocomposite increased up to 25 °C, but the melting temperature was not improved much.

KW - In situ polymerization

KW - MMT

KW - Nanocomposites

KW - Polyethylene

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U2 - 10.1016/j.stam.2005.04.004

DO - 10.1016/j.stam.2005.04.004

M3 - Article

AN - SCOPUS:24344505072

SN - 1468-6996

VL - 6

SP - 457

EP - 462

JO - Science and Technology of Advanced Materials

JF - Science and Technology of Advanced Materials

IS - 5

ER -

Polyethylene/MMT nanocomposites prepared by in situ polymerization using supported catalyst systems

Abstract

Keywords

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