Aromatic polyesters containing pendent 4-(phenylsulfonyl)phenyl groups: synthesis and characterization

TitleAromatic polyesters containing pendent 4-(phenylsulfonyl)phenyl groups: synthesis and characterization
Publication TypeJournal Article
Year of Publication2017
AuthorsBapat, SP, Jadhav, SA, Valsange, NG, Tawade, BV, Honkhambe, PN, Chavan, NN, Wadgaonkar, PP
JournalJournal of Polymer Research
Date PublishedMAR
Type of ArticleArticle
KeywordsAromatic polyesters, Bulky pendent group, solubility, thermal stability

A new bisphenol, 1,1-bis-[(4-hydroxyphenyl)-1-(4-phenylsulfonyl) phenyl)] ethane (DPSBP) was synthesized starting from diphenylsulfide and was characterized by spectroscopic methods. DPSBP was polycondensed with isophthalic acid chloride (IPC), terephthalic acid chloride (TPC) and a mixture of IPC and TPC (50: 50 mol%) by phase-transfer catalysed interfacial polymerization method to obtain aromatic polyesters containing pendent 4-(phenylsulfonyl)phenyl groups. A series of copolyesters was also obtained by polycondensation of varying molar proportions of DPSBP and bisphenol-A (BPA) with TPC. (Co) polyesters exhibited inherent viscosities in the range 0.56-1.57 dLg(-1) and number average molecular weights (Mn) were in the range 28,650-80,230 g/mol. Polyesters dissolved readily in common organic solvents such as dichloromethane, chloroform, tetrahydrofuran and aprotic polar solvents such as N-methylpyrrolidone, and N, N-dimethylacetamide. Tough, transparent and flexible films of polyesters could be cast from their chloroform solutions. X-Ray diffraction studies indicated amorphous nature of aromatic polyesters. Polyesters showed T-g values in the range 223-257 degrees C while T-10 values were in the range of 469-484 degrees C indicating their excellent thermal stability.

Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.434
Divison category: 
Polymer Science & Engineering

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