Constant rotational rheological behaviors of the PAN/DMSO/nonsolvent systems | Zendy

Du Weiping | Zendy; Chen Huifang | Zendy; Xu Yurun | Zendy; Pan Ding | Zendy

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Constant rotational rheological behaviors of the PAN/DMSO/nonsolvent systems

Author(s) -

Du Weiping,

Chen Huifang,

Xu Yurun,

Pan Ding

Publication year - 2009

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.30568

Subject(s) - rheology , shear thinning , shear rate , viscosity , rheometer , activation energy , shear (geology) , polymer chemistry , materials science , thermodynamics , apparent viscosity , viscosity index , chemistry , composite material , scanning electron microscope , physics , base oil

The constant rotational rheological behaviors of PAN/DMSO solutions with two kinds of nonsolvent (water and ethanol) have been investigated, respectively, using a cone‐plate rheometer. From viscosity measurements, the flow behavior was described within the shear rate range 0.1–1000 s −1 . The PAN solutions show shear thinning at high shear rates. The viscosities of the solutions decreased with the rising of the temperature at low shear rate. H 2 O content has great influence on the viscosity of the solutions, depending on the hydration of H 2 O and PAN or desolvent effect, according to different H 2 O content. The role of ethanol compared with H 2 O was also researched and higher viscosity was found. Non‐Newtonian index, structural viscosity index Δη, and flow activation energy of the PAN/DMSO/H 2 O systems were also studied. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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