The Synthesis And Characterization Of Ferrocene Derivative

A novel char-forming polym er bas ed on ferrocene(PCFEDA) has been prepared by Michael addition. The interm ediates 1,1’-diacetylferrocene was synthesi zed by Fridel- Crafts and 1,1’-dicinnam oylf errocene was prepa red by Cl aisen-S chmidt condensations under sol vent-free conditi on. The synthetic conditions of three products have been optimized. The products were char acterized through FT-IR spectra,1H NMR spect ra,13 C NMR spect ra, liquid chrom atogra ph/mass spectra and the m olecular weight of the polym er was measured by gel permeation chromatography(GPC).The thermal property of PC FEDA was investigated by TG-FTIR measurem ent. At N2 atm os pher e, the TGA re s ult show s that s imilar to ot her fer roc ene- containin g polym e r,mult istage weight loss was observed and t hree main weight loss stages can be distinguished for degradat ion of PCFEDA. There is a different third st age compared to other ferroc ene-base d polym er due to the s pecial structure of PCFEDA. A compact char re sidue is for med af ter TGA mea su rement an d 62. 07% ch ar residu e is obtained at 800oC.However, the decom positi on of P CFEDA is very fast. There is only one weight loss stage. CO and CO2 are its ga s eous products and red Fe 2O3 is the residue.The effects of P CFEDA, IFR and PCFEDA/ LDPE on decomposit ion property and char-forming property of LD P E were i nvestigated by TGA and SEM, res pectively. The results show that the largest thermal degradation rate of PCFEDA/LDPE composites decreases and m ore char form ing with increase of PCFEDA loading. IF R is effective for inhibi tion of degr adation of LDPE and PCFEDA can delay the decomposition of IFR /PCFEDA/LDPE composites. The SEM micrographs of the char res idues of various composites aft er combusti on in air show that a com pact structure was form ed by PCFEDA/LDPE and a foaming char was observed from IF R/LDPE. However, the char foam ing of IFR /PCFEDA/LDPE composite was not obvious. The reason may be due to the catalyz ing degradation effect of PCFEDA in earlier stage which prevent s the gr owt h of foaming char.