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Hydrogen bonding and the phase behavior of rod/coil mixtures
Author(s) -
Tang WeiLong,
Coleman Michael M.,
Painter Paul C.
Publication year - 1994
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19940840133
Subject(s) - rod , electromagnetic coil , hydrogen bond , materials science , polymer , phase (matter) , hydrogen , lattice (music) , side chain , thermodynamics , chemistry , composite material , organic chemistry , molecule , physics , medicine , alternative medicine , pathology , quantum mechanics , acoustics
On the basis of a Flory lattice model it has been calculated that single phase rod/coil mixtures can be obtained and this is supported by some recent experimental results. However, in the absence of flexible side chains attached to the rigid rods, single phase mixtures are only obtained if the interactions between the rod and coil functional groups are very strong (e.g. phenol/pyridine) and the polymers are chemically similar (i.e. χ, describing non‐specific interactions, is small). If both flexible side chains and hydrogen bonding functional groups are attached to the rig rod, however, a much broader range of allowed χ values is obtained, so that with careful chemical design it should be possible to obtain a number of miscible rod/coil mixtures.