6533b856fe1ef96bd12b246b

RESEARCH PRODUCT

Synthesis and solid state structures of macromolecular cylindrical brushes with varying side chain length

Shanju ZhangManfred SchmidtTim StephanTadeusz PakulaLidia OkrasaBin Zhang

subject

chemistry.chemical_classificationMolar massMaterials sciencePolymers and PlasticsOrganic ChemistryIntermolecular forcePolymerchemistry.chemical_compoundCrystallographyMonomerchemistryPolymerizationIntramolecular forcePolymer chemistryMaterials ChemistrySide chainCopolymer

description

Abstract Cylindrical brushes with a macromolecular backbone and well-defined side chains of different length (4≤ P n sc ≤38) were synthesized by polymerization of macromonomers. The effect of side chain length on the intermolecular order has been investigated by means of X-ray scattering on the melt-extruded samples. The increase of the side chain molar mass results in an increase of the intermolecular distance d according to d ∼( M n sc ) 0.476 . The contour length of the cylindrical brush polymers per main chain monomer unit, l m , was determined to slightly vary with side chain molar mass M n sc according to l m ∼( M n sc ) 0.059 . The resulting values are much less than the maximum extension, l m =0.25 nm , which is found to be almost independent of side chain molar mass. Also, supermolecular structure formation of a random copolymer brush prepared by radical copolymerization of methacryloyl end functionalized polyvinylpyridine and polymethylmethacrylate macromonomers has been observed and is interpreted as a consequence of intramolecular phase separation.

yearjournalcountryeditionlanguage
2004-05-01Polymer
https://doi.org/10.1016/j.polymer.2004.04.012