The percolation‐to‐cluster transition during spinodal decomposition of an off‐critical polymer mixture. Observation by light scattering and optical microscopy

1994 ◽  
Vol 101 (8) ◽  
pp. 7181-7184 ◽  
Author(s):  
J. Läuger ◽  
R. Lay ◽  
W. Gronski
Keyword(s):  
Light Scattering ◽  
Optical Microscopy ◽  
Spinodal Decomposition ◽  
Polymer Mixture

The Phase Behavior of a Hydrogen Bonding Molecular Composite

1993 ◽  
Vol 305 ◽  
Author(s):  
M. D. Dadmun ◽  
C. C. Han
Keyword(s):  
Hydrogen Bonding ◽  
Glass Transition ◽  
Light Scattering ◽  
Binary System ◽  
Phase Behavior ◽  
Optical Microscopy ◽  
Spinodal Decomposition ◽  
Random Copolymer ◽  
Nucleation And Growth ◽  
Ordering Transition

AbstractThe phase behavior of a blend containing poly(hydroxypropyl L-glutamine) (PHOPG), a rod-like polypeptide, and a coil-like random copolymer with 1.5% hydrogen bonding monomer is studied using light scattering, DSC, and optical microscopy. The results show that this system has an LCST. The phase behavior of this binary system is complicated by a glass transition and an ordering transition. Evidence is also observed of a possible change in phase demixing process, from nucleation and growth to spinodal decomposition, for a 50/50 blend with a change in temperature.

scholarly journals Influence of size polydispersity on magnetic field tunable structures in magnetic nanofluids containing superparamagnetic nanoparticles.

2021 ◽  
Author(s):  
Dillip Kumar Mohapatra ◽  
Philip James Camp ◽  
John Philip
Keyword(s):  
Magnetic Field ◽  
Particle Size ◽  
Light Scattering ◽  
Optical Microscopy ◽  
Brownian Dynamics ◽  
Phase Contrast ◽  
Superparamagnetic Nanoparticles ◽  
Magnetic Nanofluids ◽  
Dynamics Simulations ◽  
Brownian Dynamics Simulations

We probe the influence of particle size polydispersity on field-induced structures and structural transitions in magnetic fluids (ferrofluids) using phase contrast optical microscopy, light scattering and Brownian dynamics simulations. Three...

scholarly journals Pretransitional Phenomena of a Colloid Polymer Mixture Studied with Static and Dynamic Light Scattering

1996 ◽  
Vol 100 (50) ◽  
pp. 19614-19619 ◽  
Author(s):  
Igor Bodnár ◽  
Jan K. G. Dhont ◽  
Henk N. W. Lekkerkerker
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Polymer Mixture

Microstructures in titanomagnetites as guides to cooling rates of a Swedish intrusion

1979 ◽  
Vol 116 (4) ◽  
pp. 313-318 ◽  
Author(s):  
G. D. Price
Keyword(s):  
Electron Microscope ◽  
Optical Microscopy ◽  
Spinodal Decomposition ◽  
Homogeneous Nucleation ◽  
Titanium Oxides ◽  
Cooling Rates

SummaryIron-titanium oxides from Taberg in Sweden exhibit under the electron microscope several microstructural features not visible when studied by optical microscopy, including homogeneous nucleation of magnetitess from ulvöspinelss, and the spinodal decomposition of magnetitesss. Such microstructures have promise as indicators of cooling rates.

Validity of linear analysis in early-stage spinodal decomposition of a polymer mixture

2000 ◽  
Vol 113 (8) ◽  
pp. 3414-3422 ◽  
Author(s):  
Masaki Hayashi ◽  
Hiroshi Jinnai ◽  
Takeji Hashimoto
Keyword(s):  
Spinodal Decomposition ◽  
Early Stage ◽  
Linear Analysis ◽  
Polymer Mixture
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