Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites

Chong Min Koo, Hyeong Taek Ham, Sang Ouk Kim, Ki Hyun Wang, In Jae Chung, Dae Cheol Kim, Wang Cheol Zin

Research output: Contribution to journalArticle

120 Citations (Scopus)

Abstract

Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites are investigated by using synchrotron small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and polarized optical microscopy (POM). Despite favorable compatibility between polymer and organically modified layered silicates, the final morphology of the nanocomposite evolves via four stages: disordered exfoliation, ordered exfoliation, dual morphologies of intercalation and exfoliation, and intercalation in sequence with the content of silicate. The formation of the ordered exfoliation state is attributed to the steric interaction between anisotropic silicate plates. Particularly, the transition from exfoliation to intercalation provides us with the significant clue that the interaction between layer silicates gets dominant when the distance between them is smaller than a certain value. It is found that the silicate layers need larger layer Spacing than 9 nm to avoid the attractive interaction between adjacent silicate layers and to keep the exfoliation state in this nanocomposite system. Additionally, the nanocomposite shows the optical anisotropy above 12 vol % clay due to the ordering of silicate layers. The optical anisotropy becomes stronger with the content of silicate.

Original languageEnglish
Pages (from-to)5116-5122
Number of pages7
JournalMacromolecules
Volume35
Issue number13
DOIs
Publication statusPublished - 2002 Jun 18
Externally publishedYes

Fingerprint

Silicates
Polyethylene
Polyethylenes
Nanocomposites
Intercalation
Optical anisotropy
X ray scattering
Synchrotrons
Optical microscopy
Polymers
Clay
Transmission electron microscopy

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites. / Koo, Chong Min; Ham, Hyeong Taek; Kim, Sang Ouk; Wang, Ki Hyun; Chung, In Jae; Kim, Dae Cheol; Zin, Wang Cheol.

In: Macromolecules, Vol. 35, No. 13, 18.06.2002, p. 5116-5122.

Research output: Contribution to journalArticle

Koo, Chong Min ; Ham, Hyeong Taek ; Kim, Sang Ouk ; Wang, Ki Hyun ; Chung, In Jae ; Kim, Dae Cheol ; Zin, Wang Cheol. / Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites. In: Macromolecules. 2002 ; Vol. 35, No. 13. pp. 5116-5122.
@article{2426ea8c57a04424bae0dd0f55e37b45,
title = "Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites",
abstract = "Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites are investigated by using synchrotron small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and polarized optical microscopy (POM). Despite favorable compatibility between polymer and organically modified layered silicates, the final morphology of the nanocomposite evolves via four stages: disordered exfoliation, ordered exfoliation, dual morphologies of intercalation and exfoliation, and intercalation in sequence with the content of silicate. The formation of the ordered exfoliation state is attributed to the steric interaction between anisotropic silicate plates. Particularly, the transition from exfoliation to intercalation provides us with the significant clue that the interaction between layer silicates gets dominant when the distance between them is smaller than a certain value. It is found that the silicate layers need larger layer Spacing than 9 nm to avoid the attractive interaction between adjacent silicate layers and to keep the exfoliation state in this nanocomposite system. Additionally, the nanocomposite shows the optical anisotropy above 12 vol {\%} clay due to the ordering of silicate layers. The optical anisotropy becomes stronger with the content of silicate.",
author = "Koo, {Chong Min} and Ham, {Hyeong Taek} and Kim, {Sang Ouk} and Wang, {Ki Hyun} and Chung, {In Jae} and Kim, {Dae Cheol} and Zin, {Wang Cheol}",
year = "2002",
month = "6",
day = "18",
doi = "10.1021/ma011770d",
language = "English",
volume = "35",
pages = "5116--5122",
journal = "Macromolecules",
issn = "0024-9297",
publisher = "American Chemical Society",
number = "13",

}

TY - JOUR

T1 - Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites

AU - Koo, Chong Min

AU - Ham, Hyeong Taek

AU - Kim, Sang Ouk

AU - Wang, Ki Hyun

AU - Chung, In Jae

AU - Kim, Dae Cheol

AU - Zin, Wang Cheol

PY - 2002/6/18

Y1 - 2002/6/18

N2 - Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites are investigated by using synchrotron small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and polarized optical microscopy (POM). Despite favorable compatibility between polymer and organically modified layered silicates, the final morphology of the nanocomposite evolves via four stages: disordered exfoliation, ordered exfoliation, dual morphologies of intercalation and exfoliation, and intercalation in sequence with the content of silicate. The formation of the ordered exfoliation state is attributed to the steric interaction between anisotropic silicate plates. Particularly, the transition from exfoliation to intercalation provides us with the significant clue that the interaction between layer silicates gets dominant when the distance between them is smaller than a certain value. It is found that the silicate layers need larger layer Spacing than 9 nm to avoid the attractive interaction between adjacent silicate layers and to keep the exfoliation state in this nanocomposite system. Additionally, the nanocomposite shows the optical anisotropy above 12 vol % clay due to the ordering of silicate layers. The optical anisotropy becomes stronger with the content of silicate.

AB - Morphology evolution and anisotropic phase formation of the maleated polyethylene-layered silicate nanocomposites are investigated by using synchrotron small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and polarized optical microscopy (POM). Despite favorable compatibility between polymer and organically modified layered silicates, the final morphology of the nanocomposite evolves via four stages: disordered exfoliation, ordered exfoliation, dual morphologies of intercalation and exfoliation, and intercalation in sequence with the content of silicate. The formation of the ordered exfoliation state is attributed to the steric interaction between anisotropic silicate plates. Particularly, the transition from exfoliation to intercalation provides us with the significant clue that the interaction between layer silicates gets dominant when the distance between them is smaller than a certain value. It is found that the silicate layers need larger layer Spacing than 9 nm to avoid the attractive interaction between adjacent silicate layers and to keep the exfoliation state in this nanocomposite system. Additionally, the nanocomposite shows the optical anisotropy above 12 vol % clay due to the ordering of silicate layers. The optical anisotropy becomes stronger with the content of silicate.

UR - http://www.scopus.com/inward/record.url?scp=0037130035&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037130035&partnerID=8YFLogxK

U2 - 10.1021/ma011770d

DO - 10.1021/ma011770d

M3 - Article

VL - 35

SP - 5116

EP - 5122

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 13

ER -