Viscosimetric study of polystyrene polymacromonomer dilute solutions

• Published in: Colloid and polymer science Vol. 279; no. 2; pp. 190 - 195
• Main Authors: LESNE, T, HEROGUEZ, V, GNANOU, Y, DUPLESSIX, R
• Format: Journal Article
• Language: English
• Published: Berlin Springer 01-02-2001; Springer Nature B.V
• Subjects: Applied sciences; Colloids; Deviation; Dilution; Exact sciences and technology; Green chemistry; Neutron scattering; Neutrons; Organic polymers; Physicochemistry of polymers; Polymerization; Polystyrene resins; Properties and characterization; Scattering; Solution and gel properties; Molecular rigidity; Norbornene copolymer; Graft copolymer; Molecular weight viscosity relationship; Dilute solution; Experimental study; Styrene copolymer
• ISSN: 0303-402X; 1435-1536
• DOI: 10.1007/s003960000422

The viscosimetric behaviour of poly(ω-norbornenyl polystyrene) polymacromonomers is studied in dilute solutions as a function of the degree of polymerisation and the branch molar mass. We emphasise the fact that the exact molar mass characterisation using scattering techniques is illusory, owing to a strong intermolecular contribution in the scattering distribution, as evidenced by neutron scattering. Two characteristic behaviours are evidenced in the viscosimetric dependence versus molar mass of the polymacromonomer and are attributed to their global conformation when they could be considered as spherically or cylindrically symmetric. Moreover for the branch of higher molar mass used an unexplained deviation appears between the two behaviours.[PUBLICATION ABSTRACT]