Internal motion in chain polymers

✍ Scribed by T.A. King; A. Knox; J.D.G. McAdam

• Publisher: Elsevier Science
• Year: 1973
• Tongue: English
• Weight: 320 KB
• Volume: 19
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(73)80377-x

✦ Synopsis

Internal motion in polystyrene chain polymers with molecular weights greater than IO6 has been masured from the linewidths of the light scattered Rayleigh components. The relaxation time of this motion is around LO4 set for low viscosity solvents and is lower than but in the same region as the fundamental mode of the Rouse-Zimm modsl. We wish to report the quantitative observation of internal motion in a chain polymer deduced from the analysis of the lineshape of the Iight scattered Rayleigh component. The observational methods used here have the advantage of not perolrbing the molecular system. Previous investigations using Rayleigh linewidth techriques [I] have shown evidence for internal motion but without quantitative analysis. The dynamics of polymer systems are of fundamental interest.