3041

132 دكتري

دكتري

﴿ شيمي آلي﴾

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1384

يازده، 165، [II]ص.: مصور، جدول، شكل، نمودار

ص. ع. به فارسي و انگليسي

1396/01/29

كتابنامه

شيمي

شيمي

ID132 دكتري

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

r Abstract Novel optically active poly amide iIilide s poly ester imide s and poly imide urethane s based on L leucine s isoleucine s valine and L methioninewere synthesized and some structural characterization and physical propertiesof this new optically active polymersare reported The direct polycondensation reactionof the N trimellitylimido s valine imide diacid andN trimellitylimido L isoleucineimide acid with aromaticdiamines was carried out in a medium consisting of triphenyl phosphite N methyl 2 pyrolidone NMP pyridine and calcium chloride The resulting poly aimde imide s having inherent viscosities0 15 0 73dL g and 0 21 0 37 were obtainedrespectively The polycondensation reactionof N N pyromellitoyl bis s valinediacid chloride and N N pyromellitoyl bis L isoleucinediacid chloride with several aromatic diamines was developedby using a domesticmicrowave oven and solution polycondensation the presence trimethylsilyl in of chloride as an activating agent for diamines The resulting poly aimde imide shaving inherentviscosities 0 17 0 25dL g and 0 25 0 43were obtainedrespectively Poly ester imide s derived from N trimellitylimido L isoleucineand N trimellitylimido L methionine were synthesizedby direct polycondensationreaction of these diacids with several aromatic diols in a system of tosyl chloride TsCI pyridine Py and N N Dimethylformamide DMF The resulting poly ester imide shaving inherent viscosities 0 18 0 28dL g and 0 22 0 62 were obtained respectively N N pyromellitoyl bis L leucine diisocyanatewas generatedinsitu by heating of N N pyromellitoyl bis L leucine diacylazidein dry toluene and polycondensation reactionof this monomer with severalaromatic diols was performed in the presenceof DABCO as a catalyst The polymerizationreactions proceededwithin 48h producing a series of optically active poly imide urethane swith inherent viscosi of 0 18 0 28 dUg All of the above compoundswere fully characterizedby IR H NMR elementalanalysesand specific rotation 01 r I t I 1 8 j J r I J t I 1

شاد پور ملك پور

مهران غياثي، ايرج محمدپور بالترك، حميدرضا معماريان، عبدالرضا مير محسني