Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage

Taiki Hoshino; Shiki Nojima; Masanao Sato; Tomoyasu Hirai; Yuji Higaki; So Fujinami; Daiki Murakami; Shigesaburo Ogawa; Hiroshi Jinnai; Atsushi Takahara; Masaki Takata

doi:10.1016/j.polymer.2016.08.040

Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage

Taiki Hoshino, Shiki Nojima, Masanao Sato, Tomoyasu Hirai, Yuji Higaki, So Fujinami, Daiki Murakami, Shigesaburo Ogawa, Hiroshi Jinnai, Atsushi Takahara, Masaki Takata

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

6 Citations (Scopus)

Abstract

The surface dynamics of polyhedral oligomeric silsesquioxane (POSS)-functionalized polystyrene (PS-POSS) thin films above the glass transition temperature were studied by grazing-incidence X-ray photon correlation spectroscopy in order to elucidate the effects of POSS at the end of the polystyrene chains. Much slower fluctuations were observed in the surface of PS-POSS thin films than in the polystyrene thin films, despite the negligible difference in their bulk viscosity. Quantitative analysis based on fluctuation-dissipation theorem indicated that there is a high-viscosity layer at the surface of the PS-POSS films, and that the substrate interface originated from POSS segregation.

Original language	English
Pages (from-to)	487-499
Number of pages	13
Journal	polymer
Volume	105
DOIs	https://doi.org/10.1016/j.polymer.2016.08.040
Publication status	Published - Nov 22 2016

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2016.08.040

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title = "Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage",

abstract = "The surface dynamics of polyhedral oligomeric silsesquioxane (POSS)-functionalized polystyrene (PS-POSS) thin films above the glass transition temperature were studied by grazing-incidence X-ray photon correlation spectroscopy in order to elucidate the effects of POSS at the end of the polystyrene chains. Much slower fluctuations were observed in the surface of PS-POSS thin films than in the polystyrene thin films, despite the negligible difference in their bulk viscosity. Quantitative analysis based on fluctuation-dissipation theorem indicated that there is a high-viscosity layer at the surface of the PS-POSS films, and that the substrate interface originated from POSS segregation.",

author = "Taiki Hoshino and Shiki Nojima and Masanao Sato and Tomoyasu Hirai and Yuji Higaki and So Fujinami and Daiki Murakami and Shigesaburo Ogawa and Hiroshi Jinnai and Atsushi Takahara and Masaki Takata",

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year = "2016",

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doi = "10.1016/j.polymer.2016.08.040",

language = "English",

volume = "105",

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T1 - Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage

AU - Hoshino, Taiki

AU - Nojima, Shiki

AU - Sato, Masanao

AU - Hirai, Tomoyasu

AU - Higaki, Yuji

AU - Fujinami, So

AU - Murakami, Daiki

AU - Ogawa, Shigesaburo

AU - Jinnai, Hiroshi

AU - Takahara, Atsushi

AU - Takata, Masaki

PY - 2016/11/22

Y1 - 2016/11/22

N2 - The surface dynamics of polyhedral oligomeric silsesquioxane (POSS)-functionalized polystyrene (PS-POSS) thin films above the glass transition temperature were studied by grazing-incidence X-ray photon correlation spectroscopy in order to elucidate the effects of POSS at the end of the polystyrene chains. Much slower fluctuations were observed in the surface of PS-POSS thin films than in the polystyrene thin films, despite the negligible difference in their bulk viscosity. Quantitative analysis based on fluctuation-dissipation theorem indicated that there is a high-viscosity layer at the surface of the PS-POSS films, and that the substrate interface originated from POSS segregation.

AB - The surface dynamics of polyhedral oligomeric silsesquioxane (POSS)-functionalized polystyrene (PS-POSS) thin films above the glass transition temperature were studied by grazing-incidence X-ray photon correlation spectroscopy in order to elucidate the effects of POSS at the end of the polystyrene chains. Much slower fluctuations were observed in the surface of PS-POSS thin films than in the polystyrene thin films, despite the negligible difference in their bulk viscosity. Quantitative analysis based on fluctuation-dissipation theorem indicated that there is a high-viscosity layer at the surface of the PS-POSS films, and that the substrate interface originated from POSS segregation.

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DO - 10.1016/j.polymer.2016.08.040

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SN - 0032-3861

VL - 105

SP - 487

EP - 499

JO - Polymer

JF - Polymer

ER -

Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage

Abstract

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