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Rigid cross‐shaped multipodes: molecules designed for molecular reinforcement
Author(s) -
Schartel B.,
Stümpflen V.,
Wendling J.,
Wendorff J. H.
Publication year - 1996
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199603)7:3<160::aid-pat490>3.0.co;2-4
Subject(s) - materials science , solubility , polymer , crystallization , molecule , matrix (chemical analysis) , molecular dynamics , reinforcement , polymer chemistry , composite material , chemical physics , chemical engineering , computational chemistry , organic chemistry , chemistry , engineering
Cross‐like rigid multipodes consisting of a spyro center unit and arms containing one or two phenyl units designed for molecular reinforcement effects are considered. The expectation based on theoretical considerations was that such multipodes would display an enhanced solubility both in low molar mass solvents and in polymer matrices. The shape, structure formation in the condensed state, dynamic properties, solubility and the effect of the multipodes on the dynamics of the polymer matrix were investigated. The main results are that the peculiar shape of such multipodes does not prevent a dense packing and crystallization, that the solubility is enhanced by two orders of magnitude compared with linear rigid molecules and that the presence of such multipodes in a polymer matrix composed of flexible chain molecules affects the matrix dynamics.