PREPARATION OF NEW POLY(ESTER-IMIDE)S FROM N,N'-(4,4'-HEXAFLUOROISOPROPYLIDENDIPHTHALOYL)- BIS-L-ISOLEUCINE AND AROMATIC DIOLS WITH TSCL/PY/DMF AS A CONDENSING AGENT

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MALAKPOUR SH.; MOGHADAM E.

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Journal: Iranian Polymer Journal Year:2006 | Volume:15 | Issue:7 (73) Page(s): 547-554

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Title

PREPARATION OF NEW POLY(ESTER-IMIDE)S FROM N,N'-(4,4'-HEXAFLUOROISOPROPYLIDENDIPHTHALOYL)- BIS-L-ISOLEUCINE AND AROMATIC DIOLS WITH TSCL/PY/DMF AS A CONDENSING AGENT

Author(s)

MALAKPOUR SH. | MOGHADAM E. | Issue Writer Certificate

Keywords

POLY(ESTER-IMIDE)S

OPTICALLY ACTIVE POLYMERS

DIRECT POLYCONDENSATION

L-ISOLEUCINE; THERMALLY STABLE POLYMERS

INHERENT VISCOSITIES

Abstract

4,4'-Hexafluoroisopropylidene-2,2'-bis-(phthalic acid anhydride) (1) was reacted with L-isoleucine (2) in acetic acid and the resulting N,N'-(4,4'-Hexafluoroisopropylidendiphthaloyl)- bis-L-isoleucine (3) was obtained in high yield. The DIRECT POLYCONDENSATION reaction of this diacid with several aromatic diols such as bisphenol A (4a), phenolphthalein (4b), 1,4-dihydroxybenzene (4c), 4,4'-dihydroxydiphenyl sulphide (4d), bisphenyl-2,2'-diol (4e) and 4,4'-dihydroxydiphenyl sulphone (4f) and 2,6 dihydroxy toluene (4g) was carried out in a system of tosyl chloride (TsCl), pyridine (Py) and N,N-dimethylformamide (DMF). The reactions with TsCl were significantly promoted by controlling alcoholysis with diols in the presence of the catalytic amounts of DMF to give a series of optically active poly(ester-imide)s (PEI)s with good yield and moderate to high inherent viscosity ranging 0.35-0.66 dL/g. The polycondensation reactions were significantly affected by the amounts of DMF, molar concentration of monomers, TsCl and Py, aging time, temperature and the reaction time. Some of the above polymers were fully characterized by 1H NMR, FTIR, elemental analysis and specific rotation. Some structural characterization and physical properties of these optically active PEIs are reported.

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APA: Copy

MALAKPOUR, SH., & MOGHADAM, E.. (2006). PREPARATION OF NEW POLY(ESTER-IMIDE)S FROM N,N'-(4,4'-HEXAFLUOROISOPROPYLIDENDIPHTHALOYL)- BIS-L-ISOLEUCINE AND AROMATIC DIOLS WITH TSCL/PY/DMF AS A CONDENSING AGENT. IRANIAN POLYMER JOURNAL (ENGLISH), 15(7 (73)), 547-554. SID. https://sid.ir/paper/529397/en

Vancouver: Copy

MALAKPOUR SH., MOGHADAM E.. PREPARATION OF NEW POLY(ESTER-IMIDE)S FROM N,N'-(4,4'-HEXAFLUOROISOPROPYLIDENDIPHTHALOYL)- BIS-L-ISOLEUCINE AND AROMATIC DIOLS WITH TSCL/PY/DMF AS A CONDENSING AGENT. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2006;15(7 (73)):547-554. Available from: https://sid.ir/paper/529397/en

IEEE: Copy

SH. MALAKPOUR, and E. MOGHADAM, “PREPARATION OF NEW POLY(ESTER-IMIDE)S FROM N,N'-(4,4'-HEXAFLUOROISOPROPYLIDENDIPHTHALOYL)- BIS-L-ISOLEUCINE AND AROMATIC DIOLS WITH TSCL/PY/DMF AS A CONDENSING AGENT,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 15, no. 7 (73), pp. 547–554, 2006, [Online]. Available: https://sid.ir/paper/529397/en

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