Phase separation and crystallization of binary nanoparticles induced by polymer brushes

Soft Matter ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1789-1797 ◽  
Author(s):  
Dong Zhang ◽  
Yangwei Jiang ◽  
Xiaohui Wen ◽  
Linxi Zhang
Keyword(s):  
Phase Separation ◽  
Polymer Brushes ◽  
Binary Nanoparticles

scholarly journals Stable polymer brushes with effectively varied grafting density synthesized from highly crosslinked random copolymer thin films

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24166-24174 ◽  
Author(s):  
Hyungoo Kang ◽  
Sol An ◽  
Woo Jung Lee ◽  
Ga Ryang Kang ◽  
Sangwon Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Separation ◽  
Polymer Brushes ◽  
Random Copolymer ◽  
Grafting Density

Crosslinkable epoxy copolymers enable achieving highly stable P(S-b-MMA) brushes with controlled grafting density for close examination of phase separation behaviors.

Phase Separation of Mixed Solvents within Polymer Brushes

1997 ◽  
Vol 30 (24) ◽  
pp. 7588-7595 ◽  
Author(s):  
Yulia Lyatskaya ◽  
Anna C. Balazs
Keyword(s):  
Phase Separation ◽  
Polymer Brushes ◽  
Mixed Solvents

Helicoidal Patterning of Gold Nanorods by Phase Separation in Mixed Polymer Brushes

Langmuir ◽  
2019 ◽  
Vol 35 (48) ◽  
pp. 15872-15879 ◽  
Author(s):  
Huachen Tao ◽  
Linye Chen ◽  
Elizabeth Galati ◽  
Joseph G. Manion ◽  
Dwight S. Seferos ◽  
...  
Keyword(s):  
Phase Separation ◽  
Gold Nanorods ◽  
Polymer Brushes

Phase Behaviours of Polybutadiene–Polyacrylic Acid Brushes in Compressed Carbon Dioxide

2015 ◽  
Vol 68 (8) ◽  
pp. 1255 ◽  
Author(s):  
Rui Zhang ◽  
Lixiao Liu ◽  
Yicun Wen ◽  
Yu Cang ◽  
Guixin Shi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Separation ◽  
Acrylic Acid ◽  
Ternary System ◽  
Polyacrylic Acid ◽  
Polymer Brushes ◽  
Phase Behaviour ◽  
Point Pressure ◽  
Cloud Point Pressure ◽  
Co2 Addition

Our present work investigated the phase behaviour of polybutadiene–poly acrylic acid (PB–PAA) brushes–solvent–CO2 ternary system in detail. The phase separation pressures increased with increasing temperatures and solid contents of PB–PAA solution, and decreased with increasing sizes of the brushes. Considering that the expansion of water was much smaller than that of ethanol by compressed CO2, a higher cloud point pressure of CO2 could be employed to reach the phase separation when water was added as the co-solvent. Owing to the penetration of CO2 into the periphery of the shell, the chains of the polymer brushes initially shrank and then turned to aggregations before finally precipitating upon CO2 addition. Our results provide a simple and effective way for separation and recovery of polymer brushes that could promote a wider range of their applications.

scholarly journals Phase separation in mixed polymer brushes on nanoparticle surfaces enables the generation of anisotropic nanoarchitectures

Soft Matter ◽  
2018 ◽  
Vol 14 (22) ◽  
pp. 4551-4557 ◽  
Author(s):  
Christian Rossner ◽  
Qiyun Tang ◽  
Marcus Müller ◽  
Gerald Kothleitner
Keyword(s):  
Phase Separation ◽  
Polymer Brushes ◽  
Site Specific ◽  
Experiment And Simulation

Anisotropic nanoparticle arrangements formed via phase separation in mixed polymer brushes and site-specific functionalization are studied by experiment and simulation.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

Phase separation in sol gel-derived ceramic films of silica-zirconia, alumina-zirconia, and titania-zirconia system

1994 ◽  
Vol 52 ◽  
pp. 646-647
Author(s):  
J. Tong ◽  
L. Eyring
Keyword(s):  
Fracture Toughness ◽  
Phase Separation ◽  
Sol Gel ◽  
Great Influence ◽  
High Strength ◽  
Chemical Durability ◽  
Separation Method ◽  
Toughening Mechanism ◽  
Ceramic Films ◽  
Zirconia Toughened Alumina

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

Phase separation in fluid additive hard sphere mixtures?

1998 ◽  
Vol 95 (2) ◽  
pp. 131-135 ◽  
Author(s):  
DOUGLAS HENDERSON DEZSO BODA KWONG-YU CHAN
Keyword(s):  
Phase Separation ◽  
Hard Sphere
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