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RESEARCH PRODUCT

Transfer to Polymer and Long-Chain Branching in PLP-SEC of Acrylates

Patrice Castignolles

subject

chemistry.chemical_classificationAcrylatePolymers and PlasticsChemistryOrganic ChemistryRadical polymerizationSize-exclusion chromatographySolution polymerizationChain transferBranching (polymer chemistry)chemistry.chemical_compoundPolymerizationPolymer chemistryMaterials ChemistryAlkyl

description

Pulsed laser polymerization (PLP) combined with size exclusion chromatography (SEC) is the method of choice for determining propagation rate coefficients. The influence of the long-chain branching in PLP-SEC is investigated using multiple-detection SEC and a recently developed method to detect long-chain branching [P. Castignolles, R. Grab, M. Parkinson, M. Wilhelm, M. Gaborieau, Polymer 2009, 50, 2373.] While little or no long-chain branching is detected in poly(n-butyl acrylate), the error in relevant molecular weights of poly(2-ethylhexyl acrylate) is large (30-100%) due to long-chain branching. Possible variations of propagation rate coefficient with alkyl groups in alkyl acrylates or with the solvent have to be reconsidered.

yearjournalcountryeditionlanguage
2009-11-18Macromolecular Rapid Communications
https://doi.org/10.1002/marc.200900530