Synthesis and Characterization of Soluble Polyester Based on Calixarene Dicarboxylic Acid with Tertiary Butyl Pendant Groups

A series of new polycalixesters （PCES） were synthesized by polyesterification of calixarene dicarboxylic acid derivatives having tertiary butyl pendant groups at the upper rim using five different diols. All polyesters were readily soluble in polar solvents such as NMP （N-methylpyrrolidone）, DMF （di...

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Bibliographic Details
Published in:Chinese journal of polymer science 2014-05, Vol.32 (5), p.551-557
Main Authors: Mighani, Hossein, Tashakkorian, Hamed, Mighani, Moein
Format: Article
Language:English
Subjects:
Calixarenes
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Combustion
Condensed Matter Physics
Dicarboxylic acids
Industrial Chemistry/Chemical Engineering
Jewelry
N-甲基吡咯烷酮
Polyester resins
Polymer Sciences
Pyridines
Viscosity
Weight loss
二羧酸
侧基
叔丁基
合成
杯芳烃
水溶性聚酯
玻璃化转变温度
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Summary:A series of new polycalixesters （PCES） were synthesized by polyesterification of calixarene dicarboxylic acid derivatives having tertiary butyl pendant groups at the upper rim using five different diols. All polyesters were readily soluble in polar solvents such as NMP （N-methylpyrrolidone）, DMF （dimethylformamide）, DMSO （dimethylsulfoxide）, pyridine, THF （tetrahydrofurane）, HMPA （hexamethylenephosphoramide） and DMAC （dimethylacetamide）. The PCES were also partially soluble in TCE （tetrachloroethane） and ethanol and they were unsoluble in aceton. The glass transition temperatures of polyesters were between 80-184 ℃, the crystallinity temperatures of polyesters were between 130-212 ℃ and the melting temperatures of polyesters were between 185-234 ℃, as determined by differential scanning calorimeter （DSC）. The inherent viscosities of polyesters were obtained from 0.55 dL/mg to 0.61 dL/mg. The temperatures at 10% weight loss of polyesters ranged from 182 ℃ to 237 ℃. The temperatures at 25% weight loss of polyesters ranged from 258 ℃ to 331 ℃. The half weight loss （50%） temperatures of polyesters were among 315 ℃ to 371 ℃ and the char yields at 600 ℃ were determined within 13% to 22.3% in N2 atmosphere, as determined by thermo gravimetric analysis （TGA）. The polyester, PES3, has the higher melting point （234 ℃） and higher inherent viscosity （molecular weight） than the other polyesters.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-014-1430-0