Hybrids of poly(ethylene oxide-co-epichlorhydrin) and silica: Phase separation, morphology and thermal properties

R. A. Zoppi; S. P. Nunes

doi:10.1016/S0032-3861(98)00156-6

Hybrids of poly(ethylene oxide-co-epichlorhydrin) and silica: Phase separation, morphology and thermal properties

R. A. Zoppi^*, S. P. Nunes

^*Corresponding author for this work

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

11 Scopus citations

Abstract

Hybrid materials of poly(ethylene oxide-co-epichlorhydrin), HYDRIN, and silica were prepared by a sol-gel process. An inorganic network was grown in a tetrahydrofuran/organic polymer solution from acid hydrolysis and polycondensation of tetraethoxysilane, TEOS. During solvent evaporation and simultaneous growth of the inorganic network, phase separation was observed. The mechanism of phase separation of these sol-gel systems was investigated by light scattering. Spinodal decomposition (SD) was observed for HYDRIN/TEOS systems with composition equal to 71/29, 67/33, 60/40, 50/50, 40/60, 33/67 and 29/71. The morphology of the final HYDRIN/TEOS hybrid material was investigated by scanning electron microscopy. The thermal properties of these materials were investigated by differential scanning calorimetry and their hydrophilicity was evaluated by contact angle measurements.

Original language	English (US)
Pages (from-to)	6195-6203
Number of pages	9
Journal	Polymer
Volume	39
Issue number	25
DOIs	https://doi.org/10.1016/S0032-3861(98)00156-6
State	Published - Dec 1998
Externally published	Yes

Keywords

Hybrids
Phase separation
Sol-gel process

ASJC Scopus subject areas

Materials Chemistry
Polymers and Plastics
Organic Chemistry

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10.1016/S0032-3861(98)00156-6

Cite this

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title = "Hybrids of poly(ethylene oxide-co-epichlorhydrin) and silica: Phase separation, morphology and thermal properties",

abstract = "Hybrid materials of poly(ethylene oxide-co-epichlorhydrin), HYDRIN, and silica were prepared by a sol-gel process. An inorganic network was grown in a tetrahydrofuran/organic polymer solution from acid hydrolysis and polycondensation of tetraethoxysilane, TEOS. During solvent evaporation and simultaneous growth of the inorganic network, phase separation was observed. The mechanism of phase separation of these sol-gel systems was investigated by light scattering. Spinodal decomposition (SD) was observed for HYDRIN/TEOS systems with composition equal to 71/29, 67/33, 60/40, 50/50, 40/60, 33/67 and 29/71. The morphology of the final HYDRIN/TEOS hybrid material was investigated by scanning electron microscopy. The thermal properties of these materials were investigated by differential scanning calorimetry and their hydrophilicity was evaluated by contact angle measurements.",

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year = "1998",

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doi = "10.1016/S0032-3861(98)00156-6",

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journal = "Polymer",

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T1 - Hybrids of poly(ethylene oxide-co-epichlorhydrin) and silica

T2 - Phase separation, morphology and thermal properties

AU - Zoppi, R. A.

AU - Nunes, S. P.

PY - 1998/12

Y1 - 1998/12

N2 - Hybrid materials of poly(ethylene oxide-co-epichlorhydrin), HYDRIN, and silica were prepared by a sol-gel process. An inorganic network was grown in a tetrahydrofuran/organic polymer solution from acid hydrolysis and polycondensation of tetraethoxysilane, TEOS. During solvent evaporation and simultaneous growth of the inorganic network, phase separation was observed. The mechanism of phase separation of these sol-gel systems was investigated by light scattering. Spinodal decomposition (SD) was observed for HYDRIN/TEOS systems with composition equal to 71/29, 67/33, 60/40, 50/50, 40/60, 33/67 and 29/71. The morphology of the final HYDRIN/TEOS hybrid material was investigated by scanning electron microscopy. The thermal properties of these materials were investigated by differential scanning calorimetry and their hydrophilicity was evaluated by contact angle measurements.

AB - Hybrid materials of poly(ethylene oxide-co-epichlorhydrin), HYDRIN, and silica were prepared by a sol-gel process. An inorganic network was grown in a tetrahydrofuran/organic polymer solution from acid hydrolysis and polycondensation of tetraethoxysilane, TEOS. During solvent evaporation and simultaneous growth of the inorganic network, phase separation was observed. The mechanism of phase separation of these sol-gel systems was investigated by light scattering. Spinodal decomposition (SD) was observed for HYDRIN/TEOS systems with composition equal to 71/29, 67/33, 60/40, 50/50, 40/60, 33/67 and 29/71. The morphology of the final HYDRIN/TEOS hybrid material was investigated by scanning electron microscopy. The thermal properties of these materials were investigated by differential scanning calorimetry and their hydrophilicity was evaluated by contact angle measurements.

KW - Hybrids

KW - Phase separation

KW - Sol-gel process

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DO - 10.1016/S0032-3861(98)00156-6

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SN - 0032-3861

VL - 39

SP - 6195

EP - 6203

JO - Polymer

JF - Polymer

IS - 25

ER -

Hybrids of poly(ethylene oxide-co-epichlorhydrin) and silica: Phase separation, morphology and thermal properties

Abstract

Keywords

ASJC Scopus subject areas

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