title: Size-exclusion-chromatography separation of randomly branched polymers with tetrafunctional branch points and local dispersity.
abstract: The SEC separation of a randomly branched polymer, in particular local dispersity due to branching, are theoretically examined. A model of the SEC separation of randomly branched polymer with tetrafunctional branch points enabling the estimation of local dispersity was developed. Measurable quantities (branching indices) were compared with real data. Local dispersity due to branching is demonstrated to depend on elution volume and degree of branching and in the area of the beginning of the elution curve it can reach non-negligible values.
authors.affiliation: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic. netopil@imc.cas.cz
authors.forename: Miloš
authors.initials: M
authors.lastname: Netopilík
mesh_terms: D002850:Chromatography, Gel / Q000379:methods*; D011108:Polymers / Q000737:chemistry* / Q000302:isolation & purification*; D014783:Viscosity
chemical_list: D011108:Polymers