EFFECT OF THE PHASE STRUCTURE EVOLUTION ON THE PROPERTIES OF FILMS FORMED FROM PBA/P(ST-co-MMA) COMPOSITE LATEX

2008 ◽  
Vol 26 (01) ◽  
pp. 39 ◽  
Author(s):  
Dong-xia Huo ◽  
Xian-yong Yuan ◽  
Da-zhuang Liu ◽  
Li Zhang ◽  
Fang Wang
Keyword(s):  
Phase Structure ◽  
Structure Evolution

Surface phase structure evolution of the fcc MoC (001) surface in steam reforming atmosphere: systematic kinetic and thermodynamic investigations

2022 ◽  
Author(s):  
Changqing Chu ◽  
Chao Li ◽  
Xue Liu ◽  
Hang Zhao ◽  
Changning Wu ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Phase Structure ◽  
Structure Evolution ◽  
Surface Phase

The kinetic and thermodynamic aspects of the surface phase structure evolution on a fcc MoC (001) surface under H2O/H2-rich atmosphere typical in steam reforming processes were systematically studied by periodic...

scholarly journals Description of the Droplet Size Evolution in Flowing Immiscible Polymer Blends

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 761 ◽  
Author(s):  
Fortelný ◽  
Jůza
Keyword(s):  
Polymer Blends ◽  
Droplet Size ◽  
Phase Structure ◽  
Droplet Breakup ◽  
Structure Evolution ◽  
Immiscible Polymer Blends ◽  
Collision Efficiency ◽  
Immiscible Polymer ◽  
Size Evolution ◽  
Analytic Expressions

Control of the phase structure evolution in flowing immiscible polymer blends during their mixing and processing is fundamental for tailoring of their performance. This review summarizes present state of understanding and predictability of the phase structure evolution in flowing immiscible polymer blends with dispersed structure. Results of the studies of the droplet breakup in flow, important for determination of the droplet breakup frequency and of the size distribution of the daughter droplets, are reviewed. Theories of the flow-induced coalescence providing equations for collision efficiency are discussed. Approximate analytic expressions reliably describing dependence of the collision efficiency on system parameters are presented. Available theories describing the competition between the droplet breakup and coalescence in flow are summarized and approximations used in their derivation are discussed. Problems with applicability of available theories on prediction of the droplet size evolution during mixing and processing of immiscible polymer blends, which have not been broadly discussed so far, are addressed.

Phase structure evolution and magnetic properties of La/Ce doped melt-spun NdFeB alloys

2019 ◽  
Vol 490 ◽  
pp. 165454 ◽  
Author(s):  
Xiao Lin ◽  
Yang Luo ◽  
Hai-jun Peng ◽  
Yuan-fei Yang ◽  
Ya-kun Dou ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Phase Structure ◽  
Structure Evolution ◽  
Melt Spun

Instantaneous Phase Separation at the Contact Surface in Compression Molding of Immiscible Polymer Blend

2010 ◽  
Author(s):  
Wei Zhang ◽  
Min Li ◽  
Sarang Deodhar ◽  
Donggang Yao ◽  
Jack G. Zhou
Keyword(s):  
Phase Separation ◽  
Compression Ratio ◽  
Contact Surface ◽  
Phase Structure ◽  
Compression Molding ◽  
Continuous Phase ◽  
Structure Evolution ◽  
Compression Rate ◽  
Mold Surface ◽  
Immiscible Polymer

Immiscible polymer blends with a co-continuous phase structure (CPS) can yield synergistic material properties. In this study, a 50/50 wt% PLA/PS blend with CPS was used as a model system to explore the influence of compression molding conditions (including compression rate, compression ratio, and mold surface characteristics) on the final phase structure of the molded part. The microscopic characterization clearly demonstrated the instantaneous formation of a PLA rich layer at the mold contact surface when a high compression ratio and fast compression rate were applied during molding. CFD simulations were performed to numerically study the effects of compression on phase structure evolution in binary blends. If harnessed appropriately, this phase separation process may be utilized for creating innovative material structures.

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