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Conformational Rearrangement in the Nematic Phase of a Polymer Comprising Rigid and Flexible Sequences in Alternating Succession. Orientation-Dependent Interactions Included

Published online by Cambridge University Press:  26 February 2011

P. J. Flory
P. J. Flory*
Affiliation:
Department of Chemistry, Stanford University, Stanford, California 94305
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Extract

Consider a homopolymer consisting of rigid and flexible sequences in alternating succession. The prototype is

The degree of polymerization DP is very large. The oxyethylene units may occur in various disordered conformations or in the ordered one, ttt, with a statistical weight s* compared with unity for the disordered forms, collectively. Let γζ be the number of rigid sequences containing ζ rigid units, i.e., consisting of ζ rigid members joined by ζ-1 oxyethylene units in extended (ordered, ttt) conformations, the oxyethylene units flanking this sequence being otherwise conformed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 134: Symposium J – Materials Science and Engineering of Rigid-Rod Polymers , 1988 , 3
Copyright
Copyright © Materials Research Society 1989

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