ONE-STEP SYNTHESIS AND EVALUATION OF PROPERTIES OF THE OPTICALLY ACTIVE POLY (IMIDE-URETHANE) S

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TOISERKANI HOJJAT; RAFIAEE MARZIYEH

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Seminar Paper

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Seminar: IRANIAN SEMINAR OF ORGANIC CHEMISTRY
Year:2012 | Issue:19

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Title

ONE-STEP SYNTHESIS AND EVALUATION OF PROPERTIES OF THE OPTICALLY ACTIVE POLY (IMIDE-URETHANE) S

Author(s)

TOISERKANI HOJJAT | RAFIAEE MARZIYEH

Keywords

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Abstract

POLYURETHANES (PU) S ARE A CLASS OF VERSATILE ENGINEERING MATERIALS BECAUSE OF THEIR EXCELLENT PROPERTIES SUCH AS HIGH ABRASION RESISTANCE, EXCELLENT FLEXIBILITY, CHEMICAL RESISTANCE, AND DAMPING ABILITY. DESPITE THE MERITS OF THIS VERSATILE POLYMER, ITS THERMAL STABILITY IS A POINT OF CONCERN, WHICH RESTRICTS ITS APPLICATION ABOVE 150°C, WHERE ITS ACCEPTABLE MECHANICAL PROPERTIES VANISH.THEREFORE, SIGNIFICANT SYNTHETIC EFFORTS HAVE BEEN FOCUSED ON IMPROVING THE HEAT-RESISTANCE OF PUS BY ALLOYING OR COPOLYMERIZATION WITH POLYIMIDES WHILE MAINTAINING THEIR EXCELLENT PHYSICAL, MECHANICAL AND ELECTRICAL PROPERTIES OVER A WIDE TEMPERATURE RANGE. POLYMERS WITH OPTICALLY ACTIVE PROPERTIES HAVE FOUND SUCCESSFUL USES AS CHIRAL STATIONARY PHASES FOR ENANTIOMERIC SEPARATIONS AND SHOWN POTENTIAL APPLICATIONS IN ASYMMETRIC CATALYTIC REACTIONS, AND BIOMEDICAL DEVICES [6], ETC. THE OBJECTIVE OF THIS STUDY IS TO SYNTHESIZE AND CHARACTERIZE THE OPTICALLY ACTIVE POLY (IMIDE–URETHANE) S (PIU) S DERIVED FROM DIACYLAZIDE1 AND VARIOUS AROMATIC DIOLS IN DRY TOLUENE UNDER REFLUXING IN THE PRESENCE OF 1, 4-DIAZABICYCLO [2.2.2] OCTANE (DABCO, TRIETHYLENEDIAMINE) AS A CATALYST VIA ‘‘ONE-POT’’ PROCEDURE. THE THERMAL AND CHIROPTICAL PROPERTIES OF THE PRODUCTS AS WELL AS THEIR SOLUBILITIES ARE PRESENTED.

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APA: Copy

TOISERKANI, HOJJAT, & RAFIAEE, MARZIYEH. (2012). ONE-STEP SYNTHESIS AND EVALUATION OF PROPERTIES OF THE OPTICALLY ACTIVE POLY (IMIDE-URETHANE) S. IRANIAN SEMINAR OF ORGANIC CHEMISTRY. SID. https://sid.ir/paper/909493/en

Vancouver: Copy

TOISERKANI HOJJAT, RAFIAEE MARZIYEH. ONE-STEP SYNTHESIS AND EVALUATION OF PROPERTIES OF THE OPTICALLY ACTIVE POLY (IMIDE-URETHANE) S. 2012. Available from: https://sid.ir/paper/909493/en

IEEE: Copy

HOJJAT TOISERKANI, and MARZIYEH RAFIAEE, “ONE-STEP SYNTHESIS AND EVALUATION OF PROPERTIES OF THE OPTICALLY ACTIVE POLY (IMIDE-URETHANE) S,” presented at the IRANIAN SEMINAR OF ORGANIC CHEMISTRY. 2012, [Online]. Available: https://sid.ir/paper/909493/en

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