Patterning of Au nanoparticles via secondary phase-separation of large-sized compound micelles of amphiphilic block copolymer

2017 ◽  
Vol 194 ◽  
pp. 135-137
Author(s):  
Zhida Wang ◽  
Changqing Guo ◽  
Yuan Gan ◽  
Changfeng Yan
Keyword(s):  
Phase Separation ◽  
Block Copolymer ◽  
Au Nanoparticles ◽  
Secondary Phase ◽  
Amphiphilic Block Copolymer ◽  
Secondary Phase Separation

scholarly journals Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution

2021 ◽  
Author(s):  
Maciej Łojkowski ◽  
Adrian Chlanda ◽  
Emilia Choińska ◽  
Wojciech Swieszkowski
Keyword(s):  
Molecular Weight ◽  
Phase Separation ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Self Assembly ◽  
Secondary Phase ◽  
Honeycomb Structure ◽  
Polymer Chains ◽  
Molecular Weights ◽  
Secondary Phase Separation

<p>The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed.</p>

Evaporation-induced pattern formation in polymer films via secondary phase separation

2002 ◽  
Vol 57 (15) ◽  
pp. 2901-2905 ◽  
Author(s):  
Masato Yamamura ◽  
Takatoshi Nishio ◽  
Toshihisa Kajiwara ◽  
Kitaro Adachi
Keyword(s):  
Phase Separation ◽  
Pattern Formation ◽  
Polymer Films ◽  
Secondary Phase ◽  
Secondary Phase Separation

Recyclable Oil-Absorption Foams via Secondary Phase Separation

2018 ◽  
Vol 6 (11) ◽  
pp. 13834-13843 ◽  
Author(s):  
Yongtao Wang ◽  
Huige Yang ◽  
Zhihao Chen ◽  
Ning Chen ◽  
Xinchang Pang ◽  
...  
Keyword(s):  
Phase Separation ◽  
Secondary Phase ◽  
Oil Absorption ◽  
Secondary Phase Separation

Primary and Secondary Phase Separation in CdF2-LiF-AlF3-PbF2 Glasses

1988 ◽  
Vol 71 (12) ◽  
pp. 1134-1141 ◽  
Author(s):  
MICHAEL S. RANDALL ◽  
JOSEPH H. SIMMONS ◽  
OSAMA H. EL-BAYOUMI
Keyword(s):  
Phase Separation ◽  
Secondary Phase ◽  
Secondary Phase Separation

New amphiphilic block copolymer-modified electrodes for supercapacitors

2018 ◽  
Vol 42 (2) ◽  
pp. 1290-1299 ◽  
Author(s):  
Zhen Wang ◽  
Yongtao Tan ◽  
Ying Liu ◽  
Lengyuan Niu ◽  
Lingbin Kong ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Phase Separation ◽  
Block Copolymer ◽  
Acrylic Acid ◽  
Modified Electrodes ◽  
Amphiphilic Block Copolymer ◽  
Surface Modifier ◽  
Poly Acrylonitrile ◽  
Electrodes For Supercapacitors ◽  
Poly Acrylic Acid

Herein, amphiphilic block copolymer-modified film electrodes were fabricated using poly(acrylic acid)-b-poly(acrylonitrile)-b-poly(acrylic acid) as a surface modifier, polyethersulfone as a matrix polymer, and activated carbon as an active substance by the phase separation method to enhance the wettability of the electrodes.

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