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Quenching Phase Separation by Vapor Deposition Polymerization
Author(s) -
Tao Ran,
Anthamatten Mitchell
Publication year - 2016
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201500280
Subject(s) - materials science , polymerization , quenching (fluorescence) , chemical engineering , phase (matter) , vapor phase , deposition (geology) , polymer , thermodynamics , composite material , organic chemistry , fluorescence , optics , chemistry , paleontology , physics , sediment , biology , engineering
The formation of porous polymer by a template‐free, vapor deposition method is studied. Liquid–liquid phase separation of deposited species is quenched by the formation of chemical cross‐links. The resulting morphology depends on the relative rates of polymerization, cross‐linking, and phase separation. The use of a highly immiscible, liquid porogen results in open‐cell, macroporous structures. If an immiscible and crystallizable porogen is employed, porous materials grow as scaffolds of interconnected sheets. The relationship between process conditions and resulting pore‐shape and size is evaluated. The ability to control porous polymer growth, morphology, and density can be used in applications to tune modulus and damping characteristics, biological function, or drug delivery at small scales.