Azoaromatic polyethers

Thermal, optical, electrochemical, and electrochromic characteristics of novel polyimides bearing the Acridine Yellow moiety

“…Polymers investigated in these work exhibited an excellent residual weights at 800 C, in the range between 51 and 66%. This may indicate good flame-retardant characteristics associated with these polymers [37,38]. The calculated limited oxygen index (LOI) values using a linear relationship with char residue (CR): LOI ¼ 17.5 þ 0.4 CR [39,40] was in the range 38e41%.…”

Stimuli-responsive polymers. III. Poly(aryl ether ketone amide)s with reversibletrans- ?cis-4,4?-azobenzene and fixed 2,2?-binaphthyl kinking elements in the main chain

“…Similar suggestions have been offered for other macromolecules containing main chain azobenzene linkages. 20,21,24 …”

Preparation and properties of novel aromatic poly(thioethers) derived from 4,4′-thiobisbenzenethiol

“…3. From examination of the figure it is apparent that the poly(thioethers) demonstrate very good thermal stability with polymer decomposition temperatures ranging from 360 8 C to 495 8 C. The azo-containing poly(thioether) 13 exhibited the lowest onset of decomposition at 360 8 C due to the presence of the thermally labile azo groups in the polymer backbone 19) . The lower molecular weight nature of the polymers may have also contributed to the lower thermal stability.…”

“…The reaction conditions (150 8 C, 30 h, Tab. 1) were selected on the basis of our previous observations with the polymerization reactions of 4,49-difluoroazobenzene with a variety of bisphenols 19) . The solubility behavior (10% w/v) of aromatic poly-(thioethers) 10 -13 are listed in Tab.…”