On the Relationship between the Characteristic Ratio of a Finite Chain, Cn, and the Asymptotic Limit, C∞

摘要: Often experiments with chains containing a finite number of bonds, n, are interpreted the assumption that characteristic ratio, Cn, is determined completely by C∞ and n. This supported some, but not all, textbook models for simple flexible chains. The freely jointed chain, rotating chain fixed bond angle, wormlike predict Cn = f(C∞,n). These three share feature stiffness specified no more than one parameter. However, when parameter affects as in model angle symmetric hindered rotation about independent longer n alone, ≠ Since virtually all real have rotation, they cannot be expected to dimensions given conclusion numerical calculations using previously published rotational isomeric state polyethylene, polyisobutylene, poly(...