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Volumn 352, Issue 42-49 SPEC. ISS., 2006, Pages 4888-4894

Temperature versus density effects in glassforming liquids and polymers: A scaling hypothesis and its consequences

Author keywords

Fragility; Glass formation; Glass transition; Liquid crystals and molecular liquids; Polymers and organics; Pressure effects; Viscosity and relaxation

Indexed keywords

DENSITY (SPECIFIC GRAVITY); GLASS TRANSITION; LIQUID CRYSTALS; PRESSURE EFFECTS; RELAXATION PROCESSES; THERMAL EFFECTS; VISCOSITY;

EID: 33750466579     PISSN: 00223093     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jnoncrysol.2006.05.037     Document Type: Article
Times cited : (54)

References (38)
  • 7
    • 33750427707 scopus 로고    scopus 로고
    • note
    • Note that in a recent work Win and Menon (preprint cond-mat/ 0508648) claim that the dynamics in glycerol are quantitatively more sensitive to fractional changes in density (volume) than temperature. This finding, which seems completely orthogonal to what found earlier [2,8], is due to the fact that the authors do not properly evaluate the relative contributions of density and temperature effects along an isobar. As a result they miss a large effect due to the isobaric coefficient of expansivity.
  • 13
    • 33750490637 scopus 로고    scopus 로고
    • note
    • P decreases as one approaches the glass transition whether along an isobar or an isotherm.
  • 18
    • 33750467244 scopus 로고    scopus 로고
    • A. Chauty-Cailliau, PhD thesis, Université de Paris-Sud, 11 July, 2003.
  • 21
    • 33750432708 scopus 로고    scopus 로고
    • note
    • τ{divides}, exceptionally high at the glass transition, behaves in the opposite direction over the first hundreds of MPa, and tends to increases along an isochrone as T increases [8]; the isobaric fragility behaves accordingly. This could be related to the strength of the H-bond network, whose contribution decreases as T increases.
  • 38
    • 33750451806 scopus 로고    scopus 로고
    • note
    • ∞(ρ) is small for the binary Lennard-Jones model, large for the H-bonded liquid Glycerol and intermediate for the organic liquid o-terphenyl (see Refs. [3,12]).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.