Static light scattering from poly(ethylene oxide) in methanol

✍ Scribed by Shinichi Kinugasa; Hisae Nakahara; Jun-Ichi Kawahara; Yoshinori Koga; Haruo Takaya

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 308 KB
• Volume: 34
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(199602)34:3<583::aid-polb17>3.0.co;2-e

✦ Synopsis

Static light scattering measurements were performed on dilute solutions of monodisperse poly(ethy1ene oxide) (PEO) in methanol at 25°C. PEOs of five different molecular weights ranging from nominal M , = 8.6 X lo4 to 9.13 X lo5 were used. Linear Zimm plots were obtained for all the PEO samples: no downturn was observed a t small angles, indicating that no large aggregates of PEO molecules exist in the solution. From the plots, values of the weight-average molecular weight, M,, the radius of gyration, Rc, and the second virial coefficient, A2, were successfully determined for respective PEOs. Observed relationship between RG and M , indicates that methanol is certainly a good solvent for the polymer.