902452-60-2Relevant academic research and scientific papers
Polyamidoimides with side chromophoric groups
Goikhman,Subbotina,Gofman,Yakimanskii,Bursian,Lukoshkin,Fedorova,Sidorovich,Praslova,Smirnov,Abalov,Kudryavtsev
, p. 1481 - 1487 (2005)
A new method was elaborated for the introduction of chromophores into the side chains of polymers by esterification of polyamidoimides containing side carboxy groups with glycidyl ethers of dyes, 4-(4-nitrophenylazo)phenol and 4-(6-nitrobenzothiazol-2-ylazo)phenol. The optimum modification conditions were found that made it possible to esterify 15, 30, 50, and 90% of the carboxy groups. The synthesized polymers possess valuable physicomechanical properties (E = 2.8-3.3 GPa, σu = 69-90 MPa, εu = 38-77%) and glass transition temperatures of 115-125°C, depending on the degree of esterification. After chromophore orientation in the corona discharge, all the polymers demonstrate nonlinear optical properties of the second order.
