Characterization of Comb-Shaped Copolymers by Multidetection SEC, DLS and SANS.

ABSTRACT: PolyCarboxylate ether-based superplasticizers (PCEs) are a type of comb-shaped copolymers used as polymeric dispersants in cementitious materials. PCEs have a high degree of dispersity, which limits the suitability of conventional characterization techniques, such as Size Exclusion Chromatography (SEC). Properties of PCEs strongly depend on their molecular structure and a comprehensive characterization is needed to fully understand the structure⁻property relationships. PCEs with well-defined molecular structures were synthesized to study their solution conformation by SEC and scattering techniques. The combined use of SEC, dynamic light scattering and small-angle neutron scattering allowed us to demonstrate the validity of a scaling law describing the radius of gyration of comb-shaped copo

SUBMITTER: Gelardi G 

PROVIDER: S-EPMC6432231 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature