플라스틱 광섬유용 클래드 재료 개발 -PMMA/THV 블렌드의 상용성과 계면 접착력- (Preparation of Cladding Polymers for Plastic Optical Fibers -Miscibility and Interfacial Adhesion of PMMA/THV Blends-)

서지정보

· 발행기관 : 한국섬유공학회
· 수록지 정보 : 한국섬유공학회지 / 45권 / 6호 / 364 ~ 369페이지
· 저자명 : 박은주, 박인철, 박민, 이무성

초록

We investigated the miscibility of poly(methyl methacrylate) (PMMA) and random copolymers of tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride (THV) blends and their interfacial adhesion as part of the development of cladding materials for PMMA based plastic optical fiber. Three different types of THV with different copolymer composition were used as candidates for them. PMMA/THV blends being melt-mixed at 240℃ showed typical immiscible
morphology and the glass transition temperatures of the component polymers did not change after mixing. However, tie chains connecting matrix and dispersed phase were identified when THV with high content of vinylidene fluoride, i.e., THV220 was used. In spite of the intrinsic immiscibility of PMMA/THV blends the interfacial adhesion obtained from peel test was above 10⁴N/㎡ at the adhesion temperature of 240℃ and increased with increasing the
temperature for THV220. From the melt viscosity data of the polymers it was recommended that the extrusion temperature of THV should be higher than that of PMMA in order to obtain smooth interface between core and cladding layer.

영어초록

We investigated the miscibility of poly(methyl methacrylate) (PMMA) and random copolymers of tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride (THV) blends and their interfacial adhesion as part of the development of cladding materials for PMMA based plastic optical fiber. Three different types of THV with different copolymer composition were used as candidates for them. PMMA/THV blends being melt-mixed at 240℃ showed typical immiscible
morphology and the glass transition temperatures of the component polymers did not change after mixing. However, tie chains connecting matrix and dispersed phase were identified when THV with high content of vinylidene fluoride, i.e., THV220 was used. In spite of the intrinsic immiscibility of PMMA/THV blends the interfacial adhesion obtained from peel test was above 10⁴N/㎡ at the adhesion temperature of 240℃ and increased with increasing the
temperature for THV220. From the melt viscosity data of the polymers it was recommended that the extrusion temperature of THV should be higher than that of PMMA in order to obtain smooth interface between core and cladding layer.

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