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Optimizing Noncovalent Interactions Between Lignin and Synthetic Polymers to Develop Effective Compatibilizers
Author(s) -
Henry Nathan,
Harper David,
Dadmun Mark
Publication year - 2012
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.201100633
Subject(s) - intermolecular force , copolymer , lignin , hydrogen bond , polymer , polymer chemistry , materials science , polystyrene , non covalent interactions , molecule , styrene , polymer science , chemical engineering , organic chemistry , chemistry , composite material , engineering
Experiments are designed and completed to identify an effective polymeric compatibilizer for lignin–polystyrene blends. Copolymers of styrene and vinylphenol are chosen as the structure of the compatibilizer as the VPh unit can readily form intermolecular hydrogen bonds with the lignin molecule. Electron microscopy, thermal analysis, and neutron reflectivity results demonstrate that among these compatibilizers, a copolymer of styrene and VPh with ≈20%–30% VPh most readily forms intermolecular interactions with the lignin molecule and results in the most well‐dispersed blends with lignin. This behavior is explained by invoking the competition of intra‐ and intermolecular hydrogen bonding and functional group accessibility in forming intermolecular interactions.