Development of analytical system of composition- and molecular weight-distributions for organic functional materials
Project/Area Number |
03650604
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Research Category |
Grant-in-Aid for General Scientific Research (C)
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Allocation Type | Single-year Grants |
Research Field |
工業分析化学
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Research Institution | Mie University |
Principal Investigator |
MORI Sadao Mie University,Faculty of Engineering, Assistant Professor, 工学部, 助教授 (10020421)
|
Project Period (FY) |
1991 – 1992
|
Project Status |
Completed (Fiscal Year 1992)
|
Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
Keywords | Temperature descending adsorption chromatography, / Styrene-methyl methacrylate copolymer / Separation by composition / Composition distribution / Molecular weight distribution / 共重合体 / 液体クロマトグラフィ- / 吸着 / 降温吸着クロマトグラフィ- |
Research Abstract |
The purpose of this research project has been the development of the analytical system to measure both the composition- and molecular weight distributions independently each other and successively. Temperature descending adsorption chromatography (TDAC) was designed and preheater tubing and a by-pass column were connected in a column-oven of the TDAC system. The performance of the system was estimated with styrene-methyl methacrylate copolymers. The mobile phase was a mixture of 1,2-dichlo-roethane and ethanol and a silica gel column was connected in the column-oven as the stationary phase. Column temperature at the begining was 60 ゚C and a sample solution was injected into the system. The column temperature was decreased from 60 ゚C to room temperature every 5 ゚C and the fraction at each column temperature was monitored with UV detectors. Two UV detectors at 260 nm and 233 nm were used to monitor the effluent from the column: the wavelength at 260 nm was used to measure the composition and that at 233 nm the content of the copolymers. The results showed that the copolymers were separated according to their composition. Next step was to connect the size exclusion chromatography (SEC) system to the TDAC system. The effluent from the TDAC column at each column temperature was then introduced to the SEC system directly and molecular weight and molecular weight distribution of the copolymers were thus determined. With this TDAC-SEC system, both distributions, composition and molecular weight, could be measured directly without any fractionation technique.
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Report
(3 results)
Research Products
(26 results)