Role of High‐Molecular‐Weight Homopolymers on Block Copolymer Self‐Assembly: From Morphology Modifier to Template

2018 ◽  
Vol 220 (3) ◽  
pp. 1800443 ◽  
Author(s):  
Shuo Zhang ◽  
Chunhua Cai ◽  
Zhanwen Xu ◽  
Jiaping Lin ◽  
Xiao Jin
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Self Assembly

Expanding the morphology library of block copolymer self-assemblies with clews of tubules

2017 ◽  
Vol 53 (36) ◽  
pp. 5005-5008 ◽  
Author(s):  
Xiao-Li Sun ◽  
Dong-Ming Liu ◽  
Pan Wang ◽  
Jia-Lin Tan ◽  
Kang-Kang Li ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Self Assembly ◽  
High Asymmetry ◽  
Very High

Clews of tubules are reported via block copolymer self-assembly of P4VP-b-PS with both high asymmetry and very high molecular weight.

scholarly journals Giant Gyroid and Templates from High-Molecular-Weight Block Copolymer Self-assembly

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Sungmin Park ◽  
Yeongsik Kim ◽  
Hyungju Ahn ◽  
Jong Hak Kim ◽  
Pil J. Yoo ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Self Assembly

Self-assembly of an ultra-high-molecular-weight comb block copolymer at the air–water interface

Soft Matter ◽  
2009 ◽  
Vol 5 (23) ◽  
pp. 4698 ◽  
Author(s):  
Lei Zhao ◽  
Matthew D. Goodman ◽  
Ned B. Bowden ◽  
Zhiqun Lin
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Self Assembly ◽  
Water Interface ◽  
Air Water Interface ◽  
Ultra High Molecular Weight

Morphology, directed self-assembly and pattern transfer from a high molecular weight polystyrene-block-poly(dimethylsiloxane) block copolymer film

2017 ◽  
Vol 28 (14) ◽  
pp. 145301 ◽  
Author(s):  
Li-Chen Cheng ◽  
Wubin Bai ◽  
Eduardo Fernandez Martin ◽  
Kun-Hua Tu ◽  
Konstantinos Ntetsikas ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Self Assembly ◽  
Copolymer Film ◽  
Pattern Transfer

Structural Reorganization in Thin Films of High Molecular Weight Block Copolymer Self-Assembly

2013 ◽  
Vol 853 ◽  
pp. 53-56
Author(s):  
Sung Min Park ◽  
Hyung Ju Ahn ◽  
Sang Woo Kim ◽  
Jin Sam Gong ◽  
Du Yeol Ryu
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Thermal Annealing ◽  
Self Assembly ◽  
Film Surface ◽  
Structural Reorganization ◽  
Solvent Vapor ◽  
Lamellar Morphology

We demonstrate the structural reorganization of microdomain arrays toward the perpendicular orientation of lamellar morphology in high-molecular-weight PS-b-PMMA films using a combinational approach by solvent-vapor and sequential thermal annealing processes. Solvent annealing with a PMMA-selective acetone vapor induced a cylindrical morphology. However, the sequential thermal annealing of block copolymer (BCP) films led to structural reorganization to an equilibrium lamellar morphology, where the lamellar microdomains were oriented to normal to the film surface. This technique suggests an efficient route for directing orientation and structural reorganization of microdomain arrays in the thin films of high-molecular-weight BCP self-assembly.

scholarly journals The Role of High Molecular Weight Kininogen and Prothrombin as Cofactors in the Binding of Factor XI A3 Domain to the Platelet Surface

2000 ◽  
Vol 275 (33) ◽  
pp. 25139-25145 ◽  
Author(s):  
David H. Ho ◽  
Karen Badellino ◽  
Frank A. Baglia ◽  
Mao-Fu Sun ◽  
Ming-Ming Zhao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
High Molecular Weight Kininogen ◽  
Factor Xi ◽  
Platelet Surface

scholarly journals Role of Sintering Temperature in Production of Nepheline Ceramics-Based Geopolymer with Addition of Ultra-High Molecular Weight Polyethylene

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1077
Author(s):  
Romisuhani Ahmad ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Wan Mastura Wan Ibrahim ◽  
Kamarudin Hussin ◽  
Fakhryna Hannanee Ahmad Zaidi ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Sintering Temperature ◽  
Ceramic Materials ◽  
Microstructural Properties ◽  
Sintering Process ◽  
Final Microstructure ◽  
Change Of Microstructure ◽  
Ultra High Molecular Weight

The primary motivation of developing ceramic materials using geopolymer method is to minimize the reliance on high sintering temperatures. The ultra-high molecular weight polyethylene (UHMWPE) was added as binder and reinforces the nepheline ceramics based geopolymer. The samples were sintered at 900 °C, 1000 °C, 1100 °C, and 1200 °C to elucidate the influence of sintering on the physical and microstructural properties. The results indicated that a maximum flexural strength of 92 MPa is attainable once the samples are used to be sintered at 1200 °C. It was also determined that the density, porosity, volumetric shrinkage, and water absorption of the samples also affected by the sintering due to the change of microstructure and crystallinity. The IR spectra reveal that the band at around 1400 cm−1 becomes weak, indicating that sodium carbonate decomposed and began to react with the silica and alumina released from gels to form nepheline phases. The sintering process influence in the development of the final microstructure thus improving the properties of the ceramic materials.

Self-assembly behavior of ultra-high molecular weight in-situ anionically synthesized polymer matrix composite materials “grafted from” single- or multi-wall CNTs

Polymer ◽  
2021 ◽  
Vol 235 ◽  
pp. 124243
Author(s):  
Evangelos Kasapis ◽  
Konstantina Tsitoni ◽  
Gkreti-Maria Manesi ◽  
Ioannis Moutsios ◽  
Dimitrios Moschovas ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Composite Materials ◽  
High Molecular Weight ◽  
Matrix Composite ◽  
Polymer Matrix ◽  
Self Assembly ◽  
Polymer Matrix Composite ◽  
Assembly Behavior ◽  
Ultra High Molecular Weight

scholarly journals Actinobacteria challenge the paradigm: A unique protein architecture for a well-known, central metabolic complex

2021 ◽  
Vol 118 (48) ◽  
pp. e2112107118
Author(s):  
Eduardo M. Bruch ◽  
Pierre Vilela ◽  
Lu Yang ◽  
Alexandra Boyko ◽  
Norik Lexa-Sapart ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Metabolic Engineering ◽  
High Molecular Weight ◽  
Protein Oligomerization ◽  
Central Metabolism ◽  
Hollow Core ◽  
Protein Architecture ◽  
Unique Protein ◽  
Gene Coding

α-oxoacid dehydrogenase complexes are large, tripartite enzymatic machineries carrying out key reactions in central metabolism. Extremely conserved across the tree of life, they have been, so far, all considered to be structured around a high–molecular weight hollow core, consisting of up to 60 subunits of the acyltransferase component. We provide here evidence that Actinobacteria break the rule by possessing an acetyltranferase component reduced to its minimally active, trimeric unit, characterized by a unique C-terminal helix bearing an actinobacterial specific insertion that precludes larger protein oligomerization. This particular feature, together with the presence of an odhA gene coding for both the decarboxylase and the acyltransferase domains on the same polypetide, is spread over Actinobacteria and reflects the association of PDH and ODH into a single physical complex. Considering the central role of the pyruvate and 2-oxoglutarate nodes in central metabolism, our findings pave the way to both therapeutic and metabolic engineering applications.

Role of nano-fillers on tribological behaviour of ultra high molecular weight polyethylene composites

2020 ◽  
Vol 27 ◽  
pp. 2169-2173
Author(s):  
B. Suresha ◽  
B. Harshavardhan ◽  
Ashwij M. Rao ◽  
U.R. Koushik ◽  
R. Hemanth
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Tribological Behaviour ◽  
Ultra High Molecular Weight ◽  
Polyethylene Composites
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