Abstract
Gas barrier silica coatings were prepared from perhydropolysilazane (PHPS) by vacuum ultraviolet (VUV) irradiation under several irradiation conditions to investigate the relationship between their water vapor transmission rate (WVTR) and the irradiation conditions. PET substrates were coated with PHPS using its xylene solution, and the coatings were irradiated with VUV light (172 nm). The oxygen concentrations and irradiation distances were varied. The sample irradiated under conditions of lower oxygen concentration (less than 5%) and shorter irradiation distance (2.6mm) showed the lowest WVTR (0.721 g m 2 d-1). The sample irradiated under conditions of higher oxygen concentration (19%) and longer irradiation distance (13.4 mm), on the other hand, showed the highest WVTR (2.738g m2 d-1). These results suggest that VUV irradiation improves the gas barrier properties by Si-N bond cleavage rather than by oxidative reactions caused by O(1D) and O3.
| Original language | English |
|---|---|
| Pages (from-to) | 215-218 |
| Number of pages | 4 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 121 |
| Issue number | 1410 |
| Publication status | Published - 2013 Feb |
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Keywords
- Gas barrier properties
- Perhydropolysilazane
- Silica coating
- Vacuum ultraviolet light
- Water vapor transmission rate
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
- Chemistry(all)
- Condensed Matter Physics
Cite this
Characterization of gas barrier silica coatings prepared from perhydropolysilazane films by vacuum ultraviolet irradiation. / Kobayashi, Yuta; Yokota, Hirotaka; Fuchita, Yasushi; Takahashi, Atsushi; Sugahara, Yoshiyuki.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 121, No. 1410, 02.2013, p. 215-218.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterization of gas barrier silica coatings prepared from perhydropolysilazane films by vacuum ultraviolet irradiation
AU - Kobayashi, Yuta
AU - Yokota, Hirotaka
AU - Fuchita, Yasushi
AU - Takahashi, Atsushi
AU - Sugahara, Yoshiyuki
PY - 2013/2
Y1 - 2013/2
N2 - Gas barrier silica coatings were prepared from perhydropolysilazane (PHPS) by vacuum ultraviolet (VUV) irradiation under several irradiation conditions to investigate the relationship between their water vapor transmission rate (WVTR) and the irradiation conditions. PET substrates were coated with PHPS using its xylene solution, and the coatings were irradiated with VUV light (172 nm). The oxygen concentrations and irradiation distances were varied. The sample irradiated under conditions of lower oxygen concentration (less than 5%) and shorter irradiation distance (2.6mm) showed the lowest WVTR (0.721 g m 2 d-1). The sample irradiated under conditions of higher oxygen concentration (19%) and longer irradiation distance (13.4 mm), on the other hand, showed the highest WVTR (2.738g m2 d-1). These results suggest that VUV irradiation improves the gas barrier properties by Si-N bond cleavage rather than by oxidative reactions caused by O(1D) and O3.
AB - Gas barrier silica coatings were prepared from perhydropolysilazane (PHPS) by vacuum ultraviolet (VUV) irradiation under several irradiation conditions to investigate the relationship between their water vapor transmission rate (WVTR) and the irradiation conditions. PET substrates were coated with PHPS using its xylene solution, and the coatings were irradiated with VUV light (172 nm). The oxygen concentrations and irradiation distances were varied. The sample irradiated under conditions of lower oxygen concentration (less than 5%) and shorter irradiation distance (2.6mm) showed the lowest WVTR (0.721 g m 2 d-1). The sample irradiated under conditions of higher oxygen concentration (19%) and longer irradiation distance (13.4 mm), on the other hand, showed the highest WVTR (2.738g m2 d-1). These results suggest that VUV irradiation improves the gas barrier properties by Si-N bond cleavage rather than by oxidative reactions caused by O(1D) and O3.
KW - Gas barrier properties
KW - Perhydropolysilazane
KW - Silica coating
KW - Vacuum ultraviolet light
KW - Water vapor transmission rate
UR - http://www.scopus.com/inward/record.url?scp=84874926131&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874926131&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84874926131
VL - 121
SP - 215
EP - 218
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1410
ER -