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- W1991749501 abstract "Polycondensate resin was prepared from Egyptian Eichhornia Crassipes powder (EECP) and phenol using conc. HCl as catalyst at 100C. Modifications of the produced resin with phenol-formaldehyde and phenol-benzaldehyde were performed. Infrared spectroscopic studies and element analysis were carried out in order to determine the complicated resin structure. The d.c electrial resistivity ( … ) of these materials was measured. It was found that … increases with the temperature (T), together with the resin concentration (c). A maximum in … was found for all samples varied from … =10 5 to 10 9 Omega cdot cm in the temperature range from room temperature upto 100C. The resistivity of the fllter paper sheet was found to increase when impregnated with the resin EECP-phenol in a similar way with T and c. … was found to increase more when the resin was modified with phenol-formaldehyde and less so when the resin was modified with phenol-benzaldehyde. The data obtained for … was explained in relation to both the temperature and the structure. An attempt was made to interpret the conduction mechanism in view of current theories." @default.
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- W1991749501 date "2002-01-01" @default.
- W1991749501 modified "2023-09-27" @default.
- W1991749501 title "Electrical conductivity studies on impregnated paper sheet with Eichhornia Crassipes phenol polycondensate resins" @default.
- W1991749501 doi "https://doi.org/10.1080/714975672" @default.
- W1991749501 hasPublicationYear "2002" @default.
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