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Importance of Multi‐ A ngle Light Scattering in Polyolefin Characterization
Author(s) -
Podzimek Stepan
Publication year - 2013
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201300014
Subject(s) - molar mass , polyolefin , size exclusion chromatography , light scattering , elution , multiangle light scattering , characterization (materials science) , branching (polymer chemistry) , materials science , chromatography detector , chromatography , scattering , polymer , chemistry , nanotechnology , optics , organic chemistry , high performance liquid chromatography , composite material , physics , layer (electronics) , enzyme
Summary The paper reviews basic principles and applications of multi‐angle light scattering (MALS) employed as a detector for high temperature size exclusion chromatography (SEC). The presented MALS data were acquired with state‐of‐the‐art MALS instrumentation. A special attention is paid to the specific elution behavior of branched polyolefins during their SEC separation, to the characterization of long chain branching, and to overcoming the limitations arising from abnormal SEC elution. The MALS detection is also presented as highly reproducible method of the determination of molar mass averages and extremely sensitive technique for the detection of high molar mass fractions.