Synthesis and Physico-Chemical Characterization of Halogenated Partly Aromatic Cardo Copolyesters

Joshi, N.; Parsania, P. H.

doi:10.1080/03602550701558157

Cited by 5 publications

(1 citation statement)

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“…Yet, scanty work has been reported on cardo polysulfonates except our recent work on cardo polymers containing cyclohexyl as a cardo group [12,13] . With an objective of developing new cardo aromatic polysulfonates with improved physicochemical properties, the present paper describes synthesis and evaluation of physicochemical properties of copolysulfonate of bisphenol-C and bisphenol-A with diphenyl ether disulfonyl chloride (I):…”

Section: Introductionmentioning

confidence: 98%

Synthesis and Physicochemical Study of High-Performance Ether-Sulfonate Copolymer

Matariya

Parsania

2011

Polymer-Plastics Technology and Engineering

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Ether-sulfonate copolymer of 1,1 0 -bis(4-hydroxyphenyl) cyclohexane, bisphenol-A and 4,4 0 -disulfonyl chloride diphenyl ether [PESAC] has been synthesized and characterized by IR, 1 H NMR, viscosity ([g] ¼ 0.23-0.25 gdl À1 ), density (1.3172 g/cm 3 ), tensile strength (11.8 MPa), electric strength (64 kV/mm), volume resistivity (4.24 Â 10 14 X cm) and dielectric constant (1.0). PESAC possesses excellent solubility, good hydrolytic stability against water, acids, alkalis and salt, high T g (170 C) and high thermal stability (290 C). The associated kinetic parameters namely energy of activation E (386.6 kJ mol À1 ), order of the reaction n (3.1), frequency factor A (1.53 Â 10 31 s À1 ) and entropy change DS Ã (346.1 kJ mol À1 ) have been determined and discussed.

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Section: Introductionmentioning

confidence: 98%