A Film of Polystyrene Hydroxyl End Group Supported On Sio2 Monoliths: Thermal Conductivity and Micro-Indentation

Ξ±
Salomon Ramiro Vasquez Garcia
Salomon Ramiro Vasquez Garcia
Οƒ
Dr. O.Gutirrez-Arriaga
Dr. O.Gutirrez-Arriaga
ρ
S.R. VAsquez-GarcAa
S.R. VAsquez-GarcAa
Ρ 
N. Flores-RamArez
N. Flores-RamArez
Β₯
G. Luna-BArcenas
G. Luna-BArcenas
Β§
G. Barrera-Cardiel
G. Barrera-Cardiel
Ο‡
C.A. LeAn-PatiAo
C.A. LeAn-PatiAo
Ξ± Universidad Michoacana de San NicolΓ‘s de Hidalgo Universidad Michoacana de San NicolΓ‘s de Hidalgo

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A Film of Polystyrene Hydroxyl End Group Supported On Sio2 Monoliths: Thermal Conductivity and Micro-Indentation

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Abstract

Thin films (average thickness ~1132, 2236, and 3785 nm) of polystyrene with a hydroxyl end group, PSOH (Mw= 70345 g.mol) were supported on SiO 2 monolith disks (thickness ~ 0.2, 0.4, and 0.6 cm) to measure its thermal conductivity response using the Lee’s Disk method. The various analyses were carried out over a 40 minute period at intervals of 5 minutes, at a temperature range of 20 to 110Β°C, as a function of PSOH film and monolith disk thickness. As a result, an extremely low thermal conductivity was determined in reference to the individual materials. Additionally, the thermal conductivity was unaltered as a result of the variation of the film and monolith thickness. In contrast, the hardness and ductile behavior were increased by increasing the thickness of the PSOH film. As a result of this, monoliths with a PSOH film of 3782 nm thicknesses (and load of 100 gf) were considered materials of intermediate hardness (value of 31.5720 GPa). In addition, FTIR was the technique employed to establish the PSOH and SiO 2 monolith structures.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Salomon Ramiro Vasquez Garcia. 2012. \u201cA Film of Polystyrene Hydroxyl End Group Supported On Sio2 Monoliths: Thermal Conductivity and Micro-Indentation\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 12 (GJSFR Volume 12 Issue B6): .

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Version of record

v1.2

Issue date

November 8, 2012

Language
en
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Thin films (average thickness ~1132, 2236, and 3785 nm) of polystyrene with a hydroxyl end group, PSOH (Mw= 70345 g.mol) were supported on SiO 2 monolith disks (thickness ~ 0.2, 0.4, and 0.6 cm) to measure its thermal conductivity response using the Lee’s Disk method. The various analyses were carried out over a 40 minute period at intervals of 5 minutes, at a temperature range of 20 to 110Β°C, as a function of PSOH film and monolith disk thickness. As a result, an extremely low thermal conductivity was determined in reference to the individual materials. Additionally, the thermal conductivity was unaltered as a result of the variation of the film and monolith thickness. In contrast, the hardness and ductile behavior were increased by increasing the thickness of the PSOH film. As a result of this, monoliths with a PSOH film of 3782 nm thicknesses (and load of 100 gf) were considered materials of intermediate hardness (value of 31.5720 GPa). In addition, FTIR was the technique employed to establish the PSOH and SiO 2 monolith structures.

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A Film of Polystyrene Hydroxyl End Group Supported On Sio2 Monoliths: Thermal Conductivity and Micro-Indentation

Dr. O.Gutirrez-Arriaga
Dr. O.Gutirrez-Arriaga
S.R. VAsquez-GarcAa
S.R. VAsquez-GarcAa
N. Flores-RamArez
N. Flores-RamArez
G. Luna-BArcenas
G. Luna-BArcenas
G. Barrera-Cardiel
G. Barrera-Cardiel
C.A. LeAn-PatiAo
C.A. LeAn-PatiAo

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