02480nas a2200277   4500008004100000022001400041245010800055210006900163260007400232300001200306490000700318520145600325653000601781653002501787653004101812653003101853653004301884653001701927653001501944653002201959100002001981700001902001700002302020700002802043856013102071       2009                        eng d  a1388-615000aSynthesis and thermal properties of soluble silicon containing phenylated aromatic-aliphatic polyamides0 aSynthesis and thermal properties of soluble silicon containing p  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcNOV  a539-5450 v983 a<p>Aromatic polyamides find many applications in diverse and critical areas due to their high thermal stability coupled with high mechanical properties. However most of such aramides are difficult to fabricate because of their limited solubility and high melting temperature. Improvements in processability have been reported by incorporating bulky pendant groups and aliphatic spacer groups. Similarly to improve the solubility of polymers approaches of incorporating silicon in main polymer chain and co-polymerization techniques were useful. We report the synthesis and characterization of a series of phenylated silicon containing aromatic-aliphatic polyamides from a mixture of 2, 5-bis (4-carboxy methylene phenyl)-3, 4-diphenyl thiophene (CMPDT) and bis-(4-carboxy phenyl) dimethyl silane (BCPDS) in various mole proportions, with commercial aromatic diamine. Thus a series of novel co-polyamides having pendant phenyl groups, methylene spacer and silicon moiety was prepared by judicious combination of (CMPDT); BCPDS and aromatic diamine; bis-(4-aminophenyl) ether (ODA), by direct polycondensation using Yamazaki's phosphorylation method. These high molecular mass polyamides were obtained in high (89-98%) yields and had viscosities in the range of 0.23-0.57 dL/g in DMAc. Polyamides showed improved solubility in polar aprotic solvents, like NMP, DMAc, DMSO and DMF; had high thermal stability; with no mass loss below 335 A degrees C.</p>10a210a4-diphenyl thiophene10a5-bis (4-carboxy methylene phenyl)-310abis-(4-amino phenyl) ether10abis-(4-carboxy phenyl) dimethyl silane10aCopolyamides10asolubility10athermal stability1 aGhanwat, A., A.1 aSayyed, M., M.1 aWadgaonkar, P., P.1 aMaldar, Noormahamad, N.  uhttps://library.ncl.res.in/content/synthesis-and-thermal-properties-soluble-silicon-containing-phenylated-aromatic-aliphatic-0