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Preparations of plastic optical fiber having amplifier function by impregnation of organic dye using supercritical carbon dioxide

超临界二氧化碳浸渍有机染料制备具有放大器功能的塑料光纤

基本信息

批准号：
15550181
负责人：
HORI Teruo
金额：
$ 2.43万
依托单位：
University of Fukui
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

In general the plastic optical fibers having amplifier function has been prepared by spinning polymer melt mixed with some photosensitizer. In this work a quite different method was tried to prepare the plastic optical fiber having amplifier function ; a photo sensitizer, Rhodamine 6G was impregnate into some commercial plastic fibers from the supercritical carbon dioxide solution.As fundamental research, some synthetic fibers such as polyester and polypropyren fibers were dyed with disperse dyes in supercritical carbon dioxide. The solubility of dyestuffs, the swelling behavior, adsorption rate and adsorption isotherm were investigated. Consequently, the effects of dyeing temperature, pressure, time on the dying rate and equilibrium dyeing were made clear.In the case of impregnation of Rhodamine 6G into acrylic plastic optical fiber the structure change optical fiber was observed. Especially changing in diameter and/or foaming of the fiber were observed at higher temperature. Optimal condition was obtained at very low temperature. Using pure carbon dioxide no enough amount of Rhodamine 6G was impregnated. In order to impregnate much amount of Rhodamine small amounts of co-solvents was added in supercritical CO2. High amount of impregnation was obtained by adding of 3-5 mol % methanol.Optical property of the Rhodamin 6G impregnated acrylic optical fiber shows enough degree of luminescence. It is also suggested that the prepared fiber acts as a organic dye laser and a new type of plastic optical fiber having amplifier function.

一般情况下，具有放大功能的塑料光纤是通过聚合物熔体与光敏剂混合纺丝制成的。本工作尝试了一种不同的方法来制备具有放大功能的塑料光纤；将光敏剂罗丹明6G从超临界二氧化碳溶液中浸渍到一些商业塑料纤维中；作为基础研究，在超临界二氧化碳中用分散染料对聚酯和丙纶纤维等合成纤维进行了染色。考察了染料的溶解度、溶胀行为、吸附速率和吸附等温线。明确了染色温度、压力、时间对上染率和平衡染色的影响。以罗丹明6G浸渍丙烯酸酯塑料光纤为例，观察了纤维结构变化。特别是在较高的温度下观察到纤维的直径和/或发泡的变化。在很低的温度下得到了最佳的反应条件。用纯二氧化碳浸渍的罗丹明6G不够用。为了浸渍大量的罗丹明，在超临界CO2中加入少量的助溶剂。当加入3-5mol%的甲醇时，可获得较高的浸渍量。浸渍罗丹明6G的丙烯酸光纤的光学性能表现出足够的发光度。该光纤可作为有机染料激光器和一种新型的具有放大功能的塑料光纤。