| 摘要 |
PURPOSE:To obtain the titled film material having thermally reversible temperature-sensitivity and being useful as a light-screening body or a permeable membrane for separating materials, by grafting N-isopropylacrylamide onto one of the surface of a cellulose film. CONSTITUTION:One cell 2 of a reaction apparatus 1 partitioned in the middle by a cellulose film 20 of a thickness of about 0.1mm. is charged with an aqueous N-isopropylacrylamide solution containing (NH4)<2>Ce(NO3)6 as a plymerization initiator, and the other cell 3 is charged with an aqueous N-isopropyl-acrylamide solution. The system is kept at a constant temperature by recirculating water 10 and 11 through jackets 17 and 18, while the system is agitated by magnetic stirrers 12 and 13. The N-isopropylacrylamide is grafted onto the cell 2 side of the film 5 under a N2 atmosphere passed through rubber tubes 6-9 and the film 5 is washed with water without removal and then stored in water. |
