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Molecular self‐assembly and morphology induction in high‐performance aromatic phosphonated block copolymers
Author(s) -
Kumar Avneesh,
Pisula Wojciech,
Müllen Klaus
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46750
Subject(s) - copolymer , phenylene , stacking , macromolecule , materials science , polymer , oxide , polymer chemistry , self assembly , morphology (biology) , ethylene oxide , scattering , chemical engineering , phase (matter) , chemistry , nanotechnology , organic chemistry , composite material , optics , biochemistry , physics , engineering , biology , metallurgy , genetics
Well‐defined morphology induction in new block copolymers based on high‐performance individual blocks is presented here. Rod‐ and coil‐like polymers such as poly(phenylene oxide) and poly(vinybenzyl phosphonic acid), respectively, contribute to the origin of self‐assembly via phase separation between chemically dissimilar regions. Individual blocks of homopolymer are oriented in a cooperative manner leading to a controlled stacking of macromolecules and evolution of microspheres with a size up to 200 nm in solution. Growth of ordered phase in poly( p ‐phenylene oxide) chains are recorded as a result of molecular reorganization guided by poly(vinybenzyl phosphonic acid) segment. The stacking of macromolecules is noticed under atomic force microscope. Influence of the size of poly(phenylene oxide) block on self‐assembly is also examined. Scattering patterns from two‐dimensional wide angle X‐ray scattering verifies the crystalline domains in copolymers. Further end to end and side by side orientations of macromolecules are confirmed by X‐ray experiments. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46750.