Chain collapse and phase separation in poor-solvent polymer solutions: A unified molecular description

Journal of Chemical Physics

Volumn 104, Issue 4, 1996, Pages 1626-1645

  Raos, Guido ^a   Allegra, Giuseppe ^a  

^a POLITECNICO DI MILANO   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 5244224572     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.470750     Document Type: Article

References (36)

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21. it should be remarked that the present definition of ⊖ already accounts for the downward shift caused by the three-atom repulsions wherein two atoms are very close along the chain sequence (Ref. 20).
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25. The screened interactions among the chain monomers (Refs. 16, 17, 24) which at the ⊖ temperature can cause a sizeable deviation of the chain conformation from the unperturbed state, have not been included in this work. They are of relatively minor importance away from the ⊖ temperature for polymers of large molecular mass. Thus although their introduction would be a straightforward task, they have been discarded in order to keep the number of parameters in this preliminary study to a minimum.
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27. Formally, the good-solvent expansion could be described by allowing q to take imaginary values; however there is little physical justification for this generalization of our equations.
28. 2) contained in Ref. 22 are due to a different choice of the normal mode vectors which was made there (the periodic chain normal modes). Those given in Eq. (7) are exact for a finite chain of arbitrary length. The differences between the two are negligible for large values of N.
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34. intra breaks down in the same limit.
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36. The fact that V is unitary implies |det(V)|= 1; in addition this determinant has to be real and positive, for otherwise the mean-square radius of gyration would turn out to be complex or negative.