| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 | 28권 1호, p.99 |
| 발표분야 | 고분자 가공/블렌드 |
| 제목 | Qualitative Consideration on the Effect of Molecular Orientation during Preform Drawing on the Optical Loss of Polymer Optical Fiber |
| 초록 | During manufacturing the optical fiber, the heat drawing process is very common method which heats up the pre-fabricating rod, namely perform, and pull down into a fiber with a small diameter. In the case of polymer optical fiber manufacturing, the perform, which is made of amorphous thermopolymer polymers, undergoes large stretching flows over the glass transition and, then, is subsequently cooled down. While necking the preform where polymers are deformed anisotropically in the rubbery state it will have intricate thermal history. Thus, the molecules tend to become oriented and retain varying degrees of that orientation as they are cooled down into the glassy state. This fronzen-in orientation can have significant effects on the subsequent release of molecular orientation and resultant properties of polymer optical fiber. In this article, we investigated the qualitative effect of molecular orientation according to the molecular weight and drawing conditions on the optical loss of polymer optical fiber. Due to lack of quantitative information on the detailed changes during necking and complexity in the constitutive equation describing near-glass-transition of polymeric material, we used the phenomenological approach based both on the simple constitutive equation of glass-to-rubber transition and the simulation method similar to that of glass optical fiber. In conclusion, even the very small degree of molecular orientation can results in excess light scattering of polymer optical fiber and, thus, significantly increase the optical loss. |
| 저자 | 조한솔;황진택;최진성;조성헌;김무겸;라병주;박용영;한욱 |
| 소속 | 삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab.;삼성종합기술원 E-polymer lab. |
| 키워드 | POF; preform; drawing; glass transition; orientation |
