The Early Stages of the Phase Separation Dynamics in Polydisperse Polymer Blends

1994 ◽  
Vol 27 (15) ◽  
pp. 4231-4241 ◽  
Author(s):  
C. Huang ◽  
M. Olvera de la Cruz
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Early Stages ◽  
Polydisperse Polymer

Viscoelastic Effects on the Early Stages of Phase Separation in Polymer Blends

1997 ◽  
Vol 30 (15) ◽  
pp. 4459-4463 ◽  
Author(s):  
N. Clarke ◽  
T. C. B. McLeish ◽  
S. Pavawongsak ◽  
J. S. Higgins
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Early Stages ◽  
Viscoelastic Effects

Early stages of phase separation from polydisperse polymer mixtures

2001 ◽  
Vol 4 (3) ◽  
pp. 327-336 ◽  
Author(s):  
N. Clarke
Keyword(s):  
Phase Separation ◽  
Polymer Mixtures ◽  
Early Stages ◽  
Polydisperse Polymer

scholarly journals Phase Separation and Pattern Formation in Polymer Blends.

Kobunshi ◽  
1992 ◽  
Vol 41 (11) ◽  
pp. 790-793
Author(s):  
Hajime Tanaka
Keyword(s):  
Phase Separation ◽  
Pattern Formation ◽  
Polymer Blends

scholarly journals On the Role of Poly-Glutamic Acid in the Early Stages of Iron(III) (Oxy)(hydr)oxide Formation

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 715
Author(s):  
Miodrag J. Lukić ◽  
Felix Lücke ◽  
Teodora Ilić ◽  
Katharina Petrović ◽  
Denis Gebauer
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Phase Separation ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Nucleation Theory ◽  
Classical Nucleation Theory ◽  
Oxide Formation ◽  
Early Stages ◽  
Titration Assay

Nucleation of minerals in the presence of additives is critical for achieving control over the formation of solids in biomineralization processes or during syntheses of advanced hybrid materials. Herein, we investigated the early stages of Fe(III) (oxy)(hydr)oxide formation with/without polyglutamic acid (pGlu) at low driving force for phase separation (pH 2.0 to 3.0). We employed an advanced pH-constant titration assay, X-ray diffraction, thermal analysis with mass spectrometry, Fourier Transform infrared spectroscopy, and scanning electron microscopy. Three stages were observed: initial binding, stabilization of Fe(III) pre-nucleation clusters (PNCs), and phase separation, yielding Fe(III) (oxy)(hydr)oxide. The data suggest that organic–inorganic interactions occurred via binding of olation Fe(III) PNC species. Fourier Transform Infrared Spectroscopy (FTIR) analyses revealed a plausible interaction motif and a conformational adaptation of the polypeptide. The stabilization of the aqueous Fe(III) system against nucleation by pGlu contrasts with the previously reported influence of poly-aspartic acid (pAsp). While this is difficult to explain based on classical nucleation theory, alternative notions such as the so-called PNC pathway provide a possible rationale. Developing a nucleation theory that successfully explains and predicts distinct influences for chemically similar additives like pAsp and pGlu is the Holy Grail toward advancing the knowledge of nucleation, early growth, and structure formation.

scholarly journals Mechanical and Morphological Properties of Bio-Phenolic/Epoxy Polymer Blends

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 773
Author(s):  
Ahmad Safwan Ismail ◽  
Mohammad Jawaid ◽  
Norul Hisham Hamid ◽  
Ridwan Yahaya ◽  
Azman Hassan
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Polymer Blends ◽  
Epoxy Polymer ◽  
Flexural Modulus ◽  
Polymeric Materials ◽  
Morphological Properties ◽  
Comparison Results ◽  
Unique Material ◽  
Different Types

Polymer blends is a well-established and suitable method to produced new polymeric materials as compared to synthesis of a new polymer. The combination of two different types of polymers will produce a new and unique material, which has the attribute of both polymers. The aim of this work is to analyze mechanical and morphological properties of bio-phenolic/epoxy polymer blends to find the best formulation for future study. Bio-phenolic/epoxy polymer blends were fabricated using the hand lay-up method at different loading of bio-phenolic (5 wt%, 10 wt%, 15 wt%, 20 wt%, and 25 wt%) in the epoxy matrix whereas neat bio-phenolic and epoxy samples were also fabricated for comparison. Results indicated that mechanical properties were improved for bio-phenolic/epoxy polymer blends compared to neat epoxy and phenolic. In addition, there is no sign of phase separation in polymer blends. The highest tensile, flexural, and impact strength was shown by P-20(biophenolic-20 wt% and Epoxy-80 wt%) whereas P-25 (biophenolic-25 wt% and Epoxy-75 wt%) has the highest tensile and flexural modulus. Based on the finding, it is concluded that P-20 shows better overall mechanical properties among the polymer blends. Based on this finding, the bio-phenolic/epoxy blend with 20 wt% will be used for further study on flax-reinforced bio-phenolic/epoxy polymer blends.

Phase separation of polymer blends under shear field

1996 ◽  
Vol 101 (1) ◽  
pp. 157-165 ◽  
Author(s):  
Charles C. Han
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Shear Field

scholarly journals Oxidation of polycrystalline Ni studied by spectromicroscopy: Phase separation in the early stages of crystallite growth

2010 ◽  
Vol 81 (8) ◽  
Author(s):  
A. Cornish ◽  
T. Eralp ◽  
A. Shavorskiy ◽  
R. A. Bennett ◽  
G. Held ◽  
...  
Keyword(s):  
Phase Separation ◽  
Crystallite Growth ◽  
Early Stages

Morphology control in symmetric polymer blends using two-step phase separation

2006 ◽  
Vol 37 (3) ◽  
pp. 328-335 ◽  
Author(s):  
Tuyet L. Tran ◽  
Philip K. Chan ◽  
Derick Rousseau
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Morphology Control
Sign in / Sign up

Export Citation Format

Share Document