Solution properties of poly[1-(9-carbazyl)-2,3-(diethoxycarbonyl)-butane-1,4-diyl]

✍ Scribed by Cr. Simionescu; N. Cobianu

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 360 KB
• Volume: 15
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(79)90204-0

✦ Synopsis

-butane-l,4-diyl] 11), obtained by radical copolymcrization of 9-vinylcarbazole with diethylfumaratc, has been characterized by viscometry and light scattering. The Huggins constant in benzene at 25 is k u = 0.33. The Mark-Houwink relationship suggests that benzene is a good solvent for the alternating copolymer I (a = 0.67: K = 1.46.10 -" ml/g). The unperturbed dimension of the chain is given by value (Ro/M) °'5= 5.73.10 .9 cm.mol °~ g-0.5. The steric factor a = 2.51 indicates a higher flexibility for this polymer than for poly[l-19-carbazyl)ethylene].