Melt rheology of polypropylene containing small amounts of high molecular weight chain. I. Shear flow

2001 ◽  
Vol 39 (21) ◽  
pp. 2692-2704 ◽  
Author(s):  
M. Sugimoto ◽  
Y. Masubuchi ◽  
J. Takimoto ◽  
K. Koyama
Keyword(s):  
Molecular Weight ◽  
Shear Flow ◽  
High Molecular Weight ◽  
Melt Rheology

Melt Rheology of Polypropylene Containing Small Amounts of High-Molecular-Weight Chain. 2. Uniaxial and Biaxial Extensional Flow

2001 ◽  
Vol 34 (17) ◽  
pp. 6056-6063 ◽  
Author(s):  
M. Sugimoto ◽  
Y. Masubuchi ◽  
J. Takimoto ◽  
K. Koyama
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Extensional Flow ◽  
Melt Rheology

A new shear technique: Semi Continuous Shear Flow (SCSF) in medium and ultra high molecular weight Polyhydroxybutyrate blends

2006 ◽  
Vol 41 (17) ◽  
pp. 5687-5695 ◽  
Author(s):  
Lakshmi Sharma ◽  
Yoshino Ogino ◽  
Toshiji Kanaya ◽  
Tadahisa Iwata ◽  
Yoshiharu Doi
Keyword(s):  
Molecular Weight ◽  
Shear Flow ◽  
High Molecular Weight ◽  
Continuous Shear ◽  
Ultra High Molecular Weight

Effects of high molecular weight component on crystallization of polyethylene under shear flow

Polymer ◽  
2006 ◽  
Vol 47 (15) ◽  
pp. 5669-5677 ◽  
Author(s):  
Y. Ogino ◽  
H. Fukushima ◽  
G. Matsuba ◽  
N. Takahashi ◽  
K. Nishida ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Shear Flow ◽  
High Molecular Weight ◽  
High Molecular Weight Component

Semi-Continuous Shear Flow Investigation into Medium and High Molecular Weight Polyhydroxybutyrate Blends

2007 ◽  
Vol 15 (2) ◽  
pp. 161-165
Author(s):  
Lakshmi Sharma ◽  
Yoshino Ogino ◽  
Toshiji Kanaya ◽  
Tadahisa Iwata ◽  
Yoshiharu Doi
Keyword(s):  
Molecular Weight ◽  
Shear Flow ◽  
High Molecular Weight ◽  
Continuous Shear ◽  
Flow Investigation

scholarly journals A Dissipative Particle Dynamics Study of Flow Behaviors in Ultra High Molecular Weight Polyethylene/Polyamide 6 Blends Based on Souza-Martins Method

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1275 ◽  
Author(s):  
Wang ◽  
Li ◽  
Cao ◽  
ShijieRen ◽  
Yu
Keyword(s):  
Molecular Weight ◽  
Shear Flow ◽  
High Molecular Weight ◽  
Flow Behavior ◽  
Dissipative Particle Dynamics ◽  
Polyamide 6 ◽  
Particle Dynamics ◽  
Simple Shear Flow ◽  
Coupled Flow ◽  
Ultra High Molecular Weight

This paper presents our study on the use of dissipative particle dynamics (DPD) simulations to discover the flow behavior in ultra high molecular weight polyethylene/polyamide 6 (UHMWPE/PA6) blends associated with extensional-shear coupled flow, based on the Souza-Martins method, for the first time. By way of simulations, we aimed at investigating the mesoscopic morphology and alignment behavior in response to extensional-shear coupled flow, in comparison with simple shear flow and simple extensional flow. Our results reveal that the aggregation of polymers is noticeable under zero flow, as expected. Within the considered range of extensional-shear coupled rates, the morphology transforms from micelle-like clusters to a chain-like network structure by increasing coupled rates from 0.01 to 2.0. Furthermore, it shows a linear distribution along the flow direction at a high coupled rate. It can be concluded that the flow behaviors in UHMWPE/PA6 blends are significantly impacted by extensional-shear coupled rates. The orientation behavior induced by extensional-shear coupled flow is more obvious than shear flow, even though flow variations and mass fractions yield less effects on the distribution behaviors of UHMWPE/PA6 blends. The DPD results are verified by mean square displacement (MSD) as a function of simulation time and relative concentration distribution along Z direction.

Sign in / Sign up

Export Citation Format

Share Document