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Intracrystalline Dynamics in Oligomer‐Diluted Poly(Ethylene Oxide)
Author(s) -
Schäfer Mareen,
Wallstein Niklas,
Schulz Martha,
ThurnAlbrecht Thomas,
Saalwächter Kay
Publication year - 2020
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201900393
Subject(s) - oligomer , lamellar structure , poly ethylene , monomer , materials science , ethylene oxide , amorphous solid , polymer , polymer chemistry , phase (matter) , crystal (programming language) , spherulite (polymer physics) , ductility (earth science) , oxide , chemical engineering , creep , crystallography , ethylene , composite material , chemistry , copolymer , organic chemistry , programming language , computer science , metallurgy , engineering , catalysis
Abstract Solid‐state creep, ductility, and drawability are relevant mechanical properties of “crystal‐mobile” polymers, related to a large‐scale chain transport through the crystal, which is in turn mediated by intracrystalline monomer jumps. Here, high‐ M w poly(ethylene oxide) is used as a well‐controlled model system, modulating the properties of the amorphous phase by diluting with a non‐crystallized oligomer. Faster intracrystalline motions are found upon oligomer addition, indicating little changes in the fold surface and a dominant influence of the somewhat reduced lamellar thickness.