Fluorinated Polymers Derived from Tetrafunctional Cyclic Siloxanes Possessing Low Optical Loss and High Thermo-Optic Property
摘要:
We have prepared UV-curable fluorinated polymeric materials based on tetrafunctional cyclic siloxanes substituted with perfluoropolyether structure in order to have low optical loss, low birefringence, high thermo-optic coefficient, and good thermal stability. Perfluoropolyether structure with hydroxyl as one end and allyl as the other was prepared by reaction between fluorinated diols and allyl bromide. Then it was reacted with cyclic siloxane with platinum catalyst in a fairly high yield. The terminal hydroxyl was converted to acryl by reaction with acryloyl chloride. Transparent and stable films were obtained from the fluorinated monomers by UV irradiation. The photo-cured film was found to be thermally durable up to 300 degrees C, where 2% weight loss occurred. The polymer films showed -1.59 x 10 (4) /K of thermo-optic coefficient, 0.0002 of birefringence, and 0.121 dB/cm of optical loss, which were measured by prism coupler at 1550 nm of laser source.
Fluorinated Polymers Derived from Tetrafunctional Cyclic Siloxanes Possessing Low Optical Loss and High Thermo-Optic Property
摘要:
We have prepared UV-curable fluorinated polymeric materials based on tetrafunctional cyclic siloxanes substituted with perfluoropolyether structure in order to have low optical loss, low birefringence, high thermo-optic coefficient, and good thermal stability. Perfluoropolyether structure with hydroxyl as one end and allyl as the other was prepared by reaction between fluorinated diols and allyl bromide. Then it was reacted with cyclic siloxane with platinum catalyst in a fairly high yield. The terminal hydroxyl was converted to acryl by reaction with acryloyl chloride. Transparent and stable films were obtained from the fluorinated monomers by UV irradiation. The photo-cured film was found to be thermally durable up to 300 degrees C, where 2% weight loss occurred. The polymer films showed -1.59 x 10 (4) /K of thermo-optic coefficient, 0.0002 of birefringence, and 0.121 dB/cm of optical loss, which were measured by prism coupler at 1550 nm of laser source.
Fluorinated Polymers Derived from Tetrafunctional Cyclic Siloxanes Possessing Low Optical Loss and High Thermo-Optic Property
作者:Hyun Kyung Ju、Yongku Kang、Changjin Lee、Dong Wook Kim
DOI:10.1080/15421400903584234
日期:2010.4.13
We have prepared UV-curable fluorinated polymeric materials based on tetrafunctional cyclic siloxanes substituted with perfluoropolyether structure in order to have low optical loss, low birefringence, high thermo-optic coefficient, and good thermal stability. Perfluoropolyether structure with hydroxyl as one end and allyl as the other was prepared by reaction between fluorinated diols and allyl bromide. Then it was reacted with cyclic siloxane with platinum catalyst in a fairly high yield. The terminal hydroxyl was converted to acryl by reaction with acryloyl chloride. Transparent and stable films were obtained from the fluorinated monomers by UV irradiation. The photo-cured film was found to be thermally durable up to 300 degrees C, where 2% weight loss occurred. The polymer films showed -1.59 x 10 (4) /K of thermo-optic coefficient, 0.0002 of birefringence, and 0.121 dB/cm of optical loss, which were measured by prism coupler at 1550 nm of laser source.