On the static scattering of linear and cyclic copolymers in solution

✍ Scribed by M. Benmouna; E. W. Fischer; A. Bensafi; S. Khaldi

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 637 KB
• Volume: 34
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19960715)34:9<1629::aid-polb12>3.0.co;2-9

✦ Synopsis

In this article, the static scattering properties of linear and cyclic copolymers in solution are discussed. A theoretical formalism is proposed which could be useful in examining the recent light scattering data obtained by Amis et al. The cases of a triblock linear copolymer made of three equal blocks PDMS-PS-PDMS in cyclohexane, and its counterpart, the cyclic diblock PDMS-PS in the same conditions of molecular weight, composition, concentration, and temperature are considered. Another linear copolymer made of two blocks of the same nature as the cyclic copolymer is also investigated within the same formalism. The variations of the scattered intensity with the wave vector q, the concentration of polymer and the temperature of the solution are considered. The effects of temperature on the apparent virial coefficient and the effects of concentration on the apparent radius of gyration are also discussed.