Abstract
Temperature-dependent 1H NMR and dilute solution viscometry coupled with dynamic light scattering techniques were used to elucidate the aqueous phase conformation of several poly(vinyl alcohol)s (PVAs) differing in their molecular architecture (i.e., degree of blockiness, molecular weight, and degree of hydrolysis). The aqueous phase conformation of semidilute poly(vinyl alcohol) solutions possessing different residual acetate sequence distributions (degree of blockiness) and molecular weights were studied as a function of polymer concentration. Increases in the intrinsic viscosity, [η], and hydrodynamic radius, Rh, were observed as a function of increasing degree of blockiness and molecular weight of the PVAs, with a corresponding decrease in the cluster density, ρagg, which gave further support to the proposed aqueous phase conformations of the PVAs. The partially hydrolyzed PVAs can adopt different conformations in aqueous solution, depending on the molecular weight and degree of blockiness.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
