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Abstract
The role of different organic polar solvents containing methylene group on rheological behaviour of coated polyimide precursor on silica optical fibre were investigated at different concentrations and temperatures with respect to corresponding original precursor itself. The influence of keto-methyl and N-methyl polar groups are in different chemical structure of organic solvents into the coated precursor against–solvent dilution process has been explored. The interaction in between functional groups moiety containing into precursor and polar methyl group of solvents was also analysed. A substantial knowledge of rheology into coating precursor of polyimide is an important issue to coat successfully into optical fibre.
ACKNOWLEDGMENTS
The authors wish to acknowledge Ms. Swati Samanta for assistance in rheology measurements, CGCRI staff members for cooperation. This work was supported by the Council of Scientific Industrial Research (CSIR), Govt. of India sponsor through EMPOWER project OLP-0285 for financial support.
