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Volumn 44, Issue 14, 2006, Pages 2014-2023

Viscoelastic properties of silica-grafted poly(styrene-acrylonitrile) nanocomposites

Author keywords

ATRP; Nanocomposites; Rheology; Silica; Viscoelasticity

Indexed keywords

ATOM TRANSFER RADICAL POLYMERIZATION; ATRP; FLOW REVERSAL; NANOPARTICLES;

EID: 33746178143     PISSN: 08876266     EISSN: None     Source Type: Journal    
DOI: 10.1002/polb.20827     Document Type: Article
Times cited : (61)

References (58)
  • 37
    • 0023366350 scopus 로고
    • Wu, S. Polymer 1987, 28, 1144-1148.
    • (1987) Polymer , vol.28 , pp. 1144-1148
    • Wu, S.1
  • 42
    • 33746126551 scopus 로고    scopus 로고
    • note
    • 4 P for both samples A and B, respectively.
  • 43
    • 33746111901 scopus 로고    scopus 로고
    • note
    • An alternative method was to extrapolate previously published values of 0 shear viscosity to the desired molecular weights and temperatures used in our measurements. However, most data in the literature are on high molecular weight polymers and extrapolation to low molecular weight samples, particularly attempting to account for changes in the glass transition temperature, led to large errors and was not undertaken in this work.
  • 45
    • 33746110804 scopus 로고    scopus 로고
    • note
    • It is to be noted that the relatively frequency-in-dependent nature of tan δ changes to a decreasing function with reducing frequency at approximately 15.5 and 43.8 rad/s for samples A and B respectively, earlier in time and implying faster response to the network superstructure dominance for sample B. On the basis of these frequencies as corresponding to the frequency where the free chain response is masked by the mesoscale structure, we estimate a length scale of 8.6 and 6.1 nm respectively for samples A and B (considering translational diffusion) as corresponding to the smallest moieties whose relaxation was arrested because of the presence of the superstructure.
  • 46
    • 33746127660 scopus 로고    scopus 로고
    • note
    • This preconditioning was done to avoid lack of reproducibility and provide a similar initial morphology for each shear rate measured.
  • 54


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.