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Formation of Structured Polygonal Nanoparticles by Phase‐Separated Comb‐Like Polymers
Author(s) -
Weiss Verena M.,
Naolou Toufik,
Amado Elkin,
Busse Karsten,
Mäder Karsten,
Kressler Jörg
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100565
Subject(s) - adipate , nanoparticle , polymer , lamellar structure , materials science , volume fraction , phase (matter) , chemical engineering , polymer chemistry , nanotechnology , chemistry , composite material , organic chemistry , engineering
A simple approach using comb‐like polymers that undergo nanophase separation between the polyester backbone and the stearoyl side chains is proposed for the preparation of structured non‐spherical nanoparticles from a nanoemulsion. Depending on the degree of esterification of the OH groups of poly(glycerol adipate) differently ordered nanostructures is obtained. A perfect lamellar arrangement is obtained for polymers with a high degree of esterification and leads to spherical nanoparticles with an internal onion‐like structure. However, when the degree of esterification is only 20 mol%, polygonal nanoparticles with an internal pseudo‐hexagonal structure are obtained. The differences in the nanoparticle shapes are related to the volume fraction of the paraffinic pool.