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KMID : 1011420110160010013
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Journal of Korean Ophthalmic Optics Society
2011 Volume.16 No. 1 p.13 ~ p.19
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Studies on the Cellulose Acetate Glasses Frame Sheet
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Lee Hae-Sung
Lee Sung-Jun
Jung Sang-Won
Kim Hyun-Chul
Kim Eun-Joo
Go Young-Jun
Lee Se-Guen
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Abstract
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Purpose: The purpose of this study was to assess characterize overseas company’s Cellulose acetate glasses frame sheets (overseas company’s CA sheet) Also, the optimum content of plasticizer and melt extrusion condition of industrial CA resin were established for appropriate glasses frame.
Methods: Overseas company’s Cellulose acetate glasses frame sheets (overseas company’s CA sheet) were characterized by 1H-NMR, GPC, and TGA. Also, the optimum content of plasticizer and melt extrusion condition of industrial CA resin were established.
Results: The plasticizer of overseas company’s CA sheet measured by 1H-NMR was diethyl phthalate, and its content was measured 30 wt% by TGA. Also, industrial CA resin showed enough melting behavior in the range of 190~200oC. Compared to overseas company’s CA sheet’s tensile strength value of 2.2~2.8 kgf/mm2, industrial CA resin exhibited sufficient tensile strength value of 2.3 kgf/mm2 for glasses frame.
Conclusions: Industrial CA resin with 30 wt% plasticizer content would be a promising material for glasses frame prepared by melt extrusion to replace China CA sheet.
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KEYWORD
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Cellulose acetate, Glasses frame, Melt processing
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