CHARACTERIZATION OF TRIMETHYLOL PHENOL BY THERMAL-ANALYSIS

被引:3
作者
GOSWAMI, TH [1 ]
MAITI, MM [1 ]
机构
[1] INDIAN INST TECHNOL,DEPT CHEM,KHARAGPUR 721302,W BENGAL,INDIA
关键词
D O I
10.1016/0040-6031(92)85046-X
中图分类号
O414.1 [热力学];
学科分类号
摘要
A study was made of the condensation and thermal behaviour of trimethylol phenol (TMP) as a model of a phenol-formaldehyde (PF) resin. Results of study by the combined techniques of differential thermal analysis and thermogravimetry, without resorting to spectroscopic or chromatographic methods, clearly corroborate existing theories regarding the mechanism of curing of PF resins, but in addition it proved possible to attempt a quantitative evaluation of the thermoanalytical behaviour of TMP in air. The relative reactivities of 2,2'-, 2,4'- and 4,4'-dimethylene ethers in their decomposition to methylene bridges are shown to decrease in the order 4,4'- > 2,4'- > 2,2'-. It is concluded that the purity and/or identity of any methylol phenol can be established by conventional combined DTA-TG measurements.
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页码:453 / 462
页数:10
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