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A new fluorinated poly(ether amide) bearing xanthene group was prepared from 9,9-bis[4-(2-trifluoromethyl-4-aminophenoxy) phenyl]xanthene(BTFAPX) with 9,9-bis[4-(4-carboxyphenoxy)phenyl]xanthene(BCAPX) in the presence of triphenyl phosphate and pyridine(Py).The polymer had the weight-average molecular weight(M_w) of 69,000 and number-average molecular weight(Mn) of 39,000,showed the glass transition temperature(T_g) of 267℃,5%weight loss temperature(T_(d5)) over 460℃both in N_2 and air,and char yield of 62%at 800℃in N_2.This polymer was amorphous and readily soluble in amide-type solvents such as N,N-dimethylacetamide(DMAc),and even in m-cressol,Py and tetrahydrofuran(THF) at room temperature,and exhibited tensile strength of 74 MPa,elongation at break of 6%,tensile moduli of 2.2 GPa.The polymer had low dielectric constant of 3.69(100 Hz), low moisture absorption of 0.56%,and high transparency with an ultraviolet-visible absorption cut-off wavelength at 334 nm.
A new fluorinated poly (ether amide) bearing xanthene group was prepared from 9,9-bis [4- (2-trifluoromethyl-4-aminophenoxy) phenyl] ) phenyl] xanthene (BCAPX) in the presence of triphenyl phosphate and pyridine (Py). The polymer had the weight-average molecular weight (M_w) of 69,000 and number-average molecular weight (Mn) of 39,000, showed the glass transition temperature (T_g) of 267 ° C, 5% weight loss temperature (T_ (d5)) over 460 ° C both in N_2 and air, and char yield of 62% at 800 ° C in N_2.This polymer was amorphous and readily soluble in amide- type solvents such as N, N-dimethylacetamide (DMAc), and even in m-cressol, Py and tetrahydrofuran (THF) at room temperature, and tensile strength of 74 MPa, elongation at break of 6%, tensile moduli of 2.2 GPa. The polymer had low dielectric constant of 3.69 (100 Hz), low moisture absorption of 0.56%, and high transparency with an ultraviolet-visible absorption cut-off wavelength at 334 nm.