Flow-induced size distribution and anisotropy of the minor phase droplets in a polypropylene/poly (ethylene-octene) copolymer blend: Interplay between break-up and coalescence

Polymer ◽  
2012 ◽  
Vol 53 (3) ◽  
pp. 755-760 ◽  
Author(s):  
V.V. Zuev ◽  
B. Steinhoff ◽  
S. Bronnikov ◽  
H. Kothe ◽  
I. Alig
Keyword(s):  
Size Distribution ◽  
Minor Phase ◽  
Copolymer Blend ◽  
Ethylene Octene Copolymer ◽  
Break Up ◽  
Poly Ethylene

scholarly journals Size distribution and anisotropy of the minor phase droplets in polypropylene/ethylene-octene copolymer blends: Effects of shear and component miscibility

2013 ◽  
Vol 32 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Cheng-zhen Geng ◽  
Yan-ling Zhu ◽  
Guang-hui Yang ◽  
Qiang Fu ◽  
Chao-liang Zhang ◽  
...  
Keyword(s):  
Size Distribution ◽  
Minor Phase ◽  
Copolymer Blends ◽  
Ethylene Octene Copolymer

Note on the break-up of a charged liquid jet

1962 ◽  
Vol 13 (1) ◽  
pp. 151-157 ◽  
Author(s):  
R. H. Magarvey ◽  
L. E. Outhouse
Keyword(s):  
Size Distribution ◽  
Drop Size ◽  
Drop Size Distribution ◽  
Point Of View ◽  
Liquid Jet ◽  
Disintegration Process ◽  
Photographic Evidence ◽  
Break Up

The disintegration of a charged liquid jet is examined, and the break-up mechanism inferred from photographic evidence. Gravitational, molecular and electrical forces all contribute to the segmentation of the jet and determine the drop size distribution. The disintegration process is investigated from the point of view of drop generation. The segmentation of the charged jet differs from the known ways in which an uncharged jet is broken into drops.

Copolymer Nanoparticles Prepared by Self-Assembly of Poly(ethylene glycol) and Poly-γ-Glutamic Acid and its Characteristics

2013 ◽  
Vol 662 ◽  
pp. 136-139
Author(s):  
Ge Yang ◽  
Ke Shuai Lu ◽  
Xue Yan Su
Keyword(s):  
Ethylene Glycol ◽  
Glutamic Acid ◽  
Size Distribution ◽  
Self Assembly ◽  
Aqueous Media ◽  
Poly Ethylene Glycol ◽  
Polyelectrolyte Complexes ◽  
Self Assembling ◽  
Transmission Electron ◽  
Poly Ethylene

The paper describes the preparation and characterization of novel biodegradable nanoparticles based on self-assembly of poly-gamma-glutamic acid (γ-PGA) and poly(ethylene glycol) (PEG). The nanosystems were stable in aqueous media at low pH conditions. Solubility of the systems was determined by turbidity measurements. The particle size and the size distribution of the polyelectrolyte complexes were identified by dynamic lightscattering and transmission electron microscopy.It was found that the size and size distribution of the nanosystems depends on the concentrations of γ-PGA and PEG solutions and their ratio as well as on the pH of the mixture and the order of addition. The diameter of individual particles was in the range of 30–270 nm. measured by TEM, and the average hydrodynamic diameters were between 130 and 300 nm. These biodegradable, self-assembling stable nanocomplexes might be useful for several biomedical applications.

Hydrodynamic conditioning of aluminium–bentonite flocs

2006 ◽  
Vol 6 (1) ◽  
pp. 11-19 ◽  
Author(s):  
C. Coufort ◽  
A. Liné
Keyword(s):  
Image Analysis ◽  
Size Distribution ◽  
High Sensitivity ◽  
Size Distributions ◽  
Hydrodynamic Stress ◽  
Floc Size ◽  
Micro Scale ◽  
Break Up ◽  
Floc Size Distributions

The aim of this paper is to analyse the role of hydrodynamics in flocculation. The effects of a hydrodynamic sequencing (flocculation–break-up–reflocculation–break-up–reflocculation) on the evolution of aluminium–bentonite floc size distributions and structure are investigated by image analysis in a Taylor–Couette reactor. The flocculation phenomena analysed in this study mainly occur in the viscous subrange, with floc size below the Kolmogorov micro-scale. The high sensitivity of steady-state floc size distribution to initial floc size distribution (elementary particles or flocs formed issuing break-up stages) is highlighted. Reversibility or irreversibility of agglomeration and break-up phenomena are discussed in terms of floc history and hydrodynamic stress. Finally, the hydrodynamic conditioning for aluminium–bentonite flocs is examined.

Sign in / Sign up

Export Citation Format

Share Document