Abstract
Relaxation times τw and τ0 of polymer solutions in the semidilute region for the zero-shear viscosity η0 were studied in good and θ solvents. Here, τw is the weight-average relaxation time evaluated from the product of η° and the steady-state compliance Je, and τ0 is the relaxation time specifying shear rate dependence of viscosity. It is found that τ0 is proportional to τw regardless of concentration and solvent power, and the concentration and molecular weight dependences” of both relaxation times can be well understood if the semidilute region for η° Is divided into two regions, i.e., the dilute and entangled regions for Je.
| Original language | English |
|---|---|
| Pages (from-to) | 2257-2262 |
| Number of pages | 6 |
| Journal | Macromolecules |
| Volume | 21 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1988 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
Cite this
Relaxation Times of Polymer Solutions in the Semidilute Region for Zero-Shear Viscosity. / Takahashi, Yoshiaki; Umeda, Masanari; Noda, Ichiro.
In: Macromolecules, Vol. 21, No. 7, 07.1988, p. 2257-2262.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relaxation Times of Polymer Solutions in the Semidilute Region for Zero-Shear Viscosity
AU - Takahashi, Yoshiaki
AU - Umeda, Masanari
AU - Noda, Ichiro
PY - 1988/7
Y1 - 1988/7
N2 - Relaxation times τw and τ0 of polymer solutions in the semidilute region for the zero-shear viscosity η0 were studied in good and θ solvents. Here, τw is the weight-average relaxation time evaluated from the product of η° and the steady-state compliance Je, and τ0 is the relaxation time specifying shear rate dependence of viscosity. It is found that τ0 is proportional to τw regardless of concentration and solvent power, and the concentration and molecular weight dependences” of both relaxation times can be well understood if the semidilute region for η° Is divided into two regions, i.e., the dilute and entangled regions for Je.
AB - Relaxation times τw and τ0 of polymer solutions in the semidilute region for the zero-shear viscosity η0 were studied in good and θ solvents. Here, τw is the weight-average relaxation time evaluated from the product of η° and the steady-state compliance Je, and τ0 is the relaxation time specifying shear rate dependence of viscosity. It is found that τ0 is proportional to τw regardless of concentration and solvent power, and the concentration and molecular weight dependences” of both relaxation times can be well understood if the semidilute region for η° Is divided into two regions, i.e., the dilute and entangled regions for Je.
UR - http://www.scopus.com/inward/record.url?scp=0024048678&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024048678&partnerID=8YFLogxK
U2 - 10.1021/ma00185a065
DO - 10.1021/ma00185a065
M3 - Article
AN - SCOPUS:0024048678
VL - 21
SP - 2257
EP - 2262
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 7
ER -