Defect evolution and hydrodynamic effects in lamellar ordering process of two-dimensional quenched block copolymers

2009 ◽  
Vol 130 (12) ◽  
pp. 124907 ◽  
Author(s):  
Kai-Xu Song ◽  
Zhao-Yan Sun ◽  
Li-Jia An
Keyword(s):  
Block Copolymers ◽  
Two Dimensional ◽  
Defect Evolution ◽  
Hydrodynamic Effects

Ordered Structures of Styrene Butadiene Block Copolymers

1967 ◽  
Vol 40 (5) ◽  
pp. 1526-1528
Author(s):  
Ed Vanzo
Keyword(s):  
Solid State ◽  
Block Copolymers ◽  
Mechanical Deformation ◽  
Solution Properties ◽  
Two Dimensional ◽  
Ordered Structure ◽  
Ordered Structures ◽  
Polymer Molecules ◽  
Cast Films ◽  
Styrene Butadiene

Abstract Anionically prepared block copolymers of butadiene and styrene exhibit solution properties which result from a two dimensional ordering of the polymer molecules. The most notable of these properties is the iridescent colors of toluene solutions which are dependent on concentration and abruptly change on mechanical deformation. Electron micrographs of the surface of cast films indicate that the ordered structure is retained to some degree in the solid state.

scholarly journals Two-dimensional chromatography of complex polymers. 3. Full analysis of polystyrene-poly(methyl methacrylate) diblock copolymers

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Harald Pasch ◽  
Kibret Mequanint ◽  
Adrian Jörg
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Diblock Copolymers ◽  
Size Exclusion ◽  
Molecular Heterogeneity ◽  
Two Dimensional ◽  
Poly Methyl Methacrylate ◽  
Mass Distributions ◽  
Exclusion Chromatography ◽  
Complex Polymers

AbstractPoly(styrene-block-methyl methacrylate)s were fully analyzed by liquid chromatography at the critical point of adsorption (LC-CC) and two-dimensional chromatography. Operating at chromatographic conditions corresponding to the critical points of the homopolymers polystyrene and poly(methyl methacrylate), the block lengths distributions for the different blocks of the block copolymers were determined quantitatively. Information on the amounts and molar mass distributions of homopolymers and coupling products that were identified in the samples as by-products was obtained by on-line coupled 2D chromatography. It was shown that a complete picture of the molecular heterogeneity of block copolymers can be obtained only when information from different chromatographic experiments is combined. Size exclusion chromatography alone is inappropriate for evaluating the molecular heterogeneity of such samples.

Scattering patterns and stress–strain relations on phase-separated ABA block copolymers under uniaxial elongating simulations

Soft Matter ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 926-936 ◽  
Author(s):  
Katsumi Hagita ◽  
Keizo Akutagawa ◽  
Tetsuo Tominaga ◽  
Hiroshi Jinnai
Keyword(s):  
Molecular Dynamics ◽  
Block Copolymers ◽  
Molecular Dynamics Simulations ◽  
Coarse Grained ◽  
Two Dimensional ◽  
Stress Strain ◽  
Uniaxial Stretching ◽  
Dynamics Simulations ◽  
Coarse Grained Molecular Dynamics

To develop molecularly based interpretations of the two-dimensional scattering patterns (2DSPs) of phase-separated block copolymers (BCPs), we performed coarse-grained molecular dynamics simulations of ABA tri-BCPs under uniaxial stretching for block-fractions where the A-segment (glassy domain) is smaller than the B-segment (rubbery domain), and estimated the behaviour of their 2DSPs.

Two-Dimensional Pattern Formation Using Graphoepitaxy of PS-b-PMMA Block Copolymers for Advanced FinFET Device and Circuit Fabrication

ACS Nano ◽  
2014 ◽  
Vol 8 (5) ◽  
pp. 5227-5232 ◽  
Author(s):  
Hsinyu Tsai ◽  
Jed W. Pitera ◽  
Hiroyuki Miyazoe ◽  
Sarunya Bangsaruntip ◽  
Sebastian U. Engelmann ◽  
...  
Keyword(s):  
Pattern Formation ◽  
Block Copolymers ◽  
Two Dimensional ◽  
Circuit Fabrication

Ordering Dynamics of Directed Self-Assembly of Block Copolymers in Periodic Two-Dimensional Fields

2010 ◽  
Vol 43 (3) ◽  
pp. 1644-1650 ◽  
Author(s):  
Weihua Li ◽  
Feng Qiu ◽  
Yuliang Yang ◽  
An-Chang Shi
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Two Dimensional

Defect evolution behaviors from single sulfur point vacancies to line vacancies in the monolayer molybdenum disulfide

2021 ◽  
Author(s):  
Chan Gao ◽  
Xiaoyong Yang ◽  
Ming Jiang ◽  
LiXin Chen ◽  
Zhi Wen Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Transition Metal ◽  
Molybdenum Disulfide ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Defect Evolution ◽  
Metal Dichalcogenides ◽  
Optoelectronic Applications

Two-dimensional monolayer transition metal dichalcogenides (TMDs) are the promising candidates for many novel nanoelectronic and optoelectronic applications due to their exceptional electronic, optical, chemical and mechanical properties. Experimentally, single chalcogen...

Directed Self-Assembly of Block Copolymers on Two-Dimensional Chemical Patterns Fabricated by Electro-Oxidation Nanolithography

2010 ◽  
Vol 22 (20) ◽  
pp. 2268-2272 ◽  
Author(s):  
Ji Xu ◽  
Soojin Park ◽  
Shiliu Wang ◽  
Thomas P. Russell ◽  
Benjamin M. Ocko ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Two Dimensional ◽  
Electro Oxidation
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