Phase Separation of Binary Polymer Blends Driven by Photoisomerization:  An Example for a Wavelength-Selection Process in Polymers

1998 ◽  
Vol 31 (20) ◽  
pp. 6845-6854 ◽  
Author(s):  
Takashi Ohta ◽  
Osamu Urakawa ◽  
Qui Tran-Cong
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Selection Process ◽  
Wavelength Selection ◽  
Binary Polymer

Target Morphologies in Polymer Blends

2004 ◽  
Vol 856 ◽  
Author(s):  
Nigel Clarke ◽  
Ian Henderson
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Selection Process ◽  
Matrix Material ◽  
Phase Region ◽  
Wavelength Selection ◽  
Two Phase ◽  
Inhomogeneous Surface ◽  
The Matrix ◽  
Separation Results

ABSTRACTWe model a novel process for obtaining controlled morphologies in polymer blends. Particles of one type of polymer are allowed to dissolve in a matrix of a dissimilar polymer. Prior to complete dissolution the blend is quenched into the two phase region, such that phase separation takes place. The combination of the incomplete dissolution and the wavelength selection process associated with phase separation results in particles that during the ‘intermediate’ stages have a core that is significantly rich in the matrix material. The concept is extended to consider the effect of phase separation on an inhomogeneous surface chemically patterned with regions which are more attractive to one component of the blend.

Effects of sample preparation method on mixing and phase separation in binary polymer blends

Polymer ◽  
2001 ◽  
Vol 42 (8) ◽  
pp. 3475-3487 ◽  
Author(s):  
P. Rojanapitayakorn ◽  
S. Thongyai ◽  
J.S. Higgins ◽  
N. Clarke
Keyword(s):  
Phase Separation ◽  
Sample Preparation ◽  
Polymer Blends ◽  
Preparation Method ◽  
Sample Preparation Method ◽  
Binary Polymer

Criteria of Process Optimization in Binary Polymer Blends with Both Phase Separation and Crystallization

2009 ◽  
Vol 42 (20) ◽  
pp. 7623-7626 ◽  
Author(s):  
Yanhua Niu ◽  
Liang Yang ◽  
Howard Wang ◽  
Zhigang Wang
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Process Optimization ◽  
Binary Polymer

Pinning of phase separation in a model of binary polymer blends

2000 ◽  
Vol 61 (3) ◽  
pp. 3252-3255 ◽  
Author(s):  
Claudio Castellano ◽  
Federico Corberi
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Binary Polymer

Soft-shear induced phase-separated nanoparticle string-structures in polymer thin films

2016 ◽  
Vol 186 ◽  
pp. 31-43 ◽  
Author(s):  
Ren Zhang ◽  
Bongjoon Lee ◽  
Michael R. Bockstaller ◽  
Abdullah M. Al-Enizi ◽  
Ahmed Elzatahry ◽  
...  
Keyword(s):  
Thin Film ◽  
Phase Separation ◽  
Polymer Blends ◽  
Polymer Blend ◽  
Polymer Chains ◽  
Translation Speed ◽  
Binary Polymer ◽  
The Matrix ◽  
P Application ◽  
Nanoparticle Structure

Application of shear stress has been shown to unidirectionally orient the microstructures of block copolymers and polymer blends. In the present work, we study the phase separation of a novel nanoparticle (NP)–polymer blend thin film system under shear using a soft-shear dynamic zone annealing (DZA-SS) method. The nanoparticles are densely grafted with polymer chains of chemically dissimilar composition from the matrix polymer, which induces phase separation upon thermal annealing into concentrated nanoparticle domains. We systematically examine the influence of DZA-SS translation speed and thus the effective shear rate on nanoparticle domain elongation and compare this with the counterpart binary polymer blend behavior. Unidirectionally aligned nanoparticle string-domains are fabricated in the presence of soft-shear in confined thin film geometry. We expect this DZA-SS method to be applicable to various NP–polymer blends towards unidirectionally aligned nanoparticle structures, which are important to functional nanoparticle structure fabrication.

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