Theory of Multiple‐Detection Size‐Exclusion Chromatography of Complex Branched Polymers
Citations Over TimeTop 10% of 2007 papers
Abstract
Abstract SEC separates complex branched polymers by hydrodynamic volume, rather than by molecular weight or branching characteristics. Equations relating the response of different types of detectors are derived including band broadening, by defining a distribution function N′ ( M , V h ), the number of chains with molecular weight M and hydrodynamic volume V h . While the true molecular weight distribution of complex polymers cannot be determined by SEC, irrespective of the detector used, the formalism enables multiple detection SEC data to be processed to both analyze the polymer sample and reveal mechanistic information about polymer synthesis. The formalism also shows how the true weight‐ and number‐average molecular weight, $\overline M _{\rm w}$ and $\overline M _{\rm n}$ , can be obtained from correct processing of the hydrodynamic volume distributions. magnified image
Related Papers
- → Characterization of melt-polymerized polycarbonate: preparative fractionation, branching distribution and simulation(2001)22 cited
- → Solvent gradient fractionation and chain microstructure of complex branched polyethylene resin(2016)13 cited
- → Effects of molecular weight distribution and branching on rheological parameters of polyethylene melts. Part I. Unfractionated polymers(1965)45 cited
- → Determining molecular weight distribution and long-chain branching of polyethylene(1980)11 cited
- DETERMINATION OF BRANCHING DISTRIBUTION IN HIGH cis-1,4-POLYBUTADIENE BY GPC AND AUTOMATIC VISCOMETRY(1984)