Dependence of segmental orientation on polymer conformational characteristics
Polymer, cilt.36, sa.21, ss.4131-4134, 1995 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 36 Sayı: 21
- Basım Tarihi: 1995
- Doi Numarası: 10.1016/0032-3861(95)90995-e
- Dergi Adı: Polymer
- Derginin Tarandığı İndeksler: Scopus
- Sayfa Sayıları: ss.4131-4134
- Anahtar Kelimeler: conformational characteristics, polymer chains, segmental orientation
- Boğaziçi Üniversitesi Adresli: Evet
Özet
The correlation between segmental orientability and unperturbed chain dimensions has been studied. Calculations are carried out by a matrix generation technique based on a two-parameter rotational isomeric state model with interdependent bond rotation. Orientations of vectors along backbone bonds (u|) and perpendicular to the chain contour (u⊥) have been considered as a function of first (σ) and second (ω) order interaction parameters along the chain. A linear relationship of the form D0 ≅ 1.78 × 10-3〈r2〉0/nl2 for u| and D0 ≅ - 1.63 × 10 -3 〈r2〉0/nl2 for u⊥ is obtained between the orientability of a chain of n bonds of length l, which is expressed through the configurational factor D0, and the unperturbed mean-square end-to-end separation, provided that σ ≤ 1.8 or ω ≥ 0.6. © 1995.