Formation and properties of core-shell pentablock copolymer/silica hybrids

Aizhao Pan; Ling He

doi:10.1016/j.matchemphys.2014.04.027

Formation and properties of core-shell pentablock copolymer/silica hybrids

Aizhao Pan
, Ling He

School of Chemistry

Xi'an Jiaotong University

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

7 Scopus citations

Abstract

Two novel core-shell pentablock copolymer/silica hybrids are prepared for coating applications via growing silica on the precursor of pentablock copolymer PDMS-b-(PMMA-b-PMPS)₂ (PDMM), which is synthesized by dimethylsiloxane (DMS), methylmethacrylate (MMA) and 3-(trimethyoxysilyl)propyl methacrylate (MPS). The hybrid of PDMM core/silica shell (PDMM@SiO₂) is obtained by the assembled PDMM in THF/CH₃OH solution with tetraethyl orthosilicate (TEOS), but the hybrid of silica core/PDMM shell (SiO₂@PDMM) is obtained by the hydrolyzed TEOS with -Si(OCH ₃)₃ groups during assembling of PDMM in THF solution. PDMM@SiO₂ could produce a film distributed agminated SiO₂ particles with 45 nm roughness, but SiO₂@PDMM could produce a film scatted individual SiO₂ particles with 26 nm roughness. Therefore, PDMM@SiO₂ film gives an obvious hydrophobicity (116°), higher T_g (121 °C), high T_d (>400 °C), low amount of water absorption (300 Hz of Δf), low viscoelasticity (-0.32 of ΔD/Δf), but tight layer structure (10 × 10^-6 of ΔD) and high storage modulus (2350 MPa). However, both core-shell hybrids have the similar adhesion to the substrate (185-187 N).

Original language	English
Pages (from-to)	5-10
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	147
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2014.04.027
State	Published - 15 Sep 2014

Keywords

Composite materials
Mechanical properties
Sol-gel growth
Surface properties
Thermal properties

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10.1016/j.matchemphys.2014.04.027

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@article{2890b0effb9944d09ddd3e8abe1307d6,

title = "Formation and properties of core-shell pentablock copolymer/silica hybrids",

abstract = "Two novel core-shell pentablock copolymer/silica hybrids are prepared for coating applications via growing silica on the precursor of pentablock copolymer PDMS-b-(PMMA-b-PMPS)2 (PDMM), which is synthesized by dimethylsiloxane (DMS), methylmethacrylate (MMA) and 3-(trimethyoxysilyl)propyl methacrylate (MPS). The hybrid of PDMM core/silica shell (PDMM@SiO2) is obtained by the assembled PDMM in THF/CH3OH solution with tetraethyl orthosilicate (TEOS), but the hybrid of silica core/PDMM shell (SiO2@PDMM) is obtained by the hydrolyzed TEOS with -Si(OCH 3)3 groups during assembling of PDMM in THF solution. PDMM@SiO2 could produce a film distributed agminated SiO2 particles with 45 nm roughness, but SiO2@PDMM could produce a film scatted individual SiO2 particles with 26 nm roughness. Therefore, PDMM@SiO2 film gives an obvious hydrophobicity (116°), higher Tg (121 °C), high Td (>400 °C), low amount of water absorption (300 Hz of Δf), low viscoelasticity (-0.32 of ΔD/Δf), but tight layer structure (10 × 10-6 of ΔD) and high storage modulus (2350 MPa). However, both core-shell hybrids have the similar adhesion to the substrate (185-187 N).",

keywords = "Composite materials, Mechanical properties, Sol-gel growth, Surface properties, Thermal properties",

author = "Aizhao Pan and Ling He",

year = "2014",

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day = "15",

doi = "10.1016/j.matchemphys.2014.04.027",

language = "英语",

volume = "147",

pages = "5--10",

journal = "Materials Chemistry and Physics",

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T1 - Formation and properties of core-shell pentablock copolymer/silica hybrids

AU - Pan, Aizhao

AU - He, Ling

PY - 2014/9/15

Y1 - 2014/9/15

N2 - Two novel core-shell pentablock copolymer/silica hybrids are prepared for coating applications via growing silica on the precursor of pentablock copolymer PDMS-b-(PMMA-b-PMPS)2 (PDMM), which is synthesized by dimethylsiloxane (DMS), methylmethacrylate (MMA) and 3-(trimethyoxysilyl)propyl methacrylate (MPS). The hybrid of PDMM core/silica shell (PDMM@SiO2) is obtained by the assembled PDMM in THF/CH3OH solution with tetraethyl orthosilicate (TEOS), but the hybrid of silica core/PDMM shell (SiO2@PDMM) is obtained by the hydrolyzed TEOS with -Si(OCH 3)3 groups during assembling of PDMM in THF solution. PDMM@SiO2 could produce a film distributed agminated SiO2 particles with 45 nm roughness, but SiO2@PDMM could produce a film scatted individual SiO2 particles with 26 nm roughness. Therefore, PDMM@SiO2 film gives an obvious hydrophobicity (116°), higher Tg (121 °C), high Td (>400 °C), low amount of water absorption (300 Hz of Δf), low viscoelasticity (-0.32 of ΔD/Δf), but tight layer structure (10 × 10-6 of ΔD) and high storage modulus (2350 MPa). However, both core-shell hybrids have the similar adhesion to the substrate (185-187 N).

AB - Two novel core-shell pentablock copolymer/silica hybrids are prepared for coating applications via growing silica on the precursor of pentablock copolymer PDMS-b-(PMMA-b-PMPS)2 (PDMM), which is synthesized by dimethylsiloxane (DMS), methylmethacrylate (MMA) and 3-(trimethyoxysilyl)propyl methacrylate (MPS). The hybrid of PDMM core/silica shell (PDMM@SiO2) is obtained by the assembled PDMM in THF/CH3OH solution with tetraethyl orthosilicate (TEOS), but the hybrid of silica core/PDMM shell (SiO2@PDMM) is obtained by the hydrolyzed TEOS with -Si(OCH 3)3 groups during assembling of PDMM in THF solution. PDMM@SiO2 could produce a film distributed agminated SiO2 particles with 45 nm roughness, but SiO2@PDMM could produce a film scatted individual SiO2 particles with 26 nm roughness. Therefore, PDMM@SiO2 film gives an obvious hydrophobicity (116°), higher Tg (121 °C), high Td (>400 °C), low amount of water absorption (300 Hz of Δf), low viscoelasticity (-0.32 of ΔD/Δf), but tight layer structure (10 × 10-6 of ΔD) and high storage modulus (2350 MPa). However, both core-shell hybrids have the similar adhesion to the substrate (185-187 N).

KW - Composite materials

KW - Mechanical properties

KW - Sol-gel growth

KW - Surface properties

KW - Thermal properties

UR - https://www.scopus.com/pages/publications/84902360920

U2 - 10.1016/j.matchemphys.2014.04.027

DO - 10.1016/j.matchemphys.2014.04.027

M3 - 文章

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SP - 5

EP - 10

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Formation and properties of core-shell pentablock copolymer/silica hybrids

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