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Copolysulfonate (CPMCAD) of 1,1′-bis(3-methyl-4-hydroxyphenyl)cyclohexane (0.0025 mol), bisphenol-A (0.0025 mol), and 4,4′-diphenyl disulfonyl chloride(0.005 mol) has been synthesized by interfacial polycondensation technique at 5 °C for 4 h using water-1,2-dichloroethane (50:12.5 ml) as an interphase, alkali (0.015 mol) as an acid acceptor, and cetyl trimethyl ammonium bromide (100 mg) as an emulsifier. CPMCAD is characterized by solubility, infrared (IR) and nuclear magnetic resonance (NMR) spectroscopic techniques, viscosity in two different solvents at 30 °C, molecular weight and molecular weight distribution by gel permeation chromatograph,,), and density (1.3024 g cm−3) by floatation method. A 0.10 mm thick CPMCAD film has 15.56 ± 1.26 MPa tensile strength, 30 kV/mm electric strength at 27 °C, and 6.5 × 1013 Ω-cm volume resistivity at 25 °C. CPMCAD possesses good hydrolytic stability against water, acids, alkali, and salt solutions at 35 °C, goodTg(166.2 °C), and excellent thermal stability (315 °C). [ABSTRACT FROM AUTHOR]

Copoly (ester-sulfonate) (CPMCDI) of 1,1'-bis(3-methyl-4-hydroxy phenyl) cyclohexane (5mmol), isophthaloyl chloride(2.5mmol) and 4,4'-diphenyl disulfonyl chloride(2.5 mmol) has been synthesized by interfacial polycondensation technique at 5°C for 31/2 h using water-1,2- dichloroethane(50:12.5 mL) as diphasic system, alkali (0.015 mol) as an acid acceptor and cetyltrimethyl ammonium bromide (CTAB)(110mg) and sodium lauryl sulfate (SLS) (20mg) as mixed emulsifiers. CPMCDI is characterized by solubility, IR and NMR spectroscopic techniques, viscosity in four different solvents at 30 0C, molecular weight by GPC (...Mw= 2.5 x 104, ...Mn= 0.87 x 104, ...Mn...Mw ) and density (1.2644 g/cm³) by flotation method. A 0.10 mm thick CPMCDI film has 17.4 MPa tensile strength, 30kV/mm electric strength at 27°C and 8.7x 1011 Ω cm volume resistivity at 25°C. CPMCDI possesses fairly good hydrolytic stability against water, acids, alkalis and salts at 35°C, high Tg (183°C) and good thermal stability (325°C). [ABSTRACT FROM AUTHOR]