scholarly journals Microphase Separation Induced by a Differentiating Non-Solvent in a Semi-Dilute Solution of an Ultra-High-Molecular-Weight Block Copolymer

2011 ◽  
Vol 60 (1) ◽  
pp. 24-28
Author(s):  
Koji ANDO ◽  
Takahiko YAMANAKA ◽  
Shigeru OKAMOTO ◽  
Naoki SAKAMOTO ◽  
Hirokazu HASEGAWA ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Microphase Separation ◽  
Dilute Solution ◽  
Ultra High Molecular Weight

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

Tribomechanical Properties of Polymeric Composites Based on Mixture of Ultra High Molecular Weight Polyethylene and Polyamide

2015 ◽  
Vol 770 ◽  
pp. 87-92
Author(s):  
Sergey Panin ◽  
Lyudmila А. Kornienko ◽  
Nguyen Xuan Thuc ◽  
Larisa R. Ivanova ◽  
Mikhail A. Poltaranin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Block Copolymer ◽  
High Molecular Weight ◽  
Sliding Friction ◽  
Polymeric Composites ◽  
Flow Index ◽  
Dry Sliding ◽  
Dry Sliding Friction ◽  
Ultra High Molecular Weight

In order to find out optimum filler to increase manufacturability (extrudability) of composites based on ultra-high molecular weight polyethylene (UHMWPE) matrix as well as to develop polymer-polymeric composites with improved tribological characteristics, the structure, mechanical properties and wear resistance of UHMWPE mixtures with elasticizing block-copolymer PA-b-LLDPE (UHMWPE + PA-b-LLDPE) was investigated under dry sliding friction. Applied aspect of the study is related to the selection of commercially available fillers being compatible with UHMWPE for manufacturing anti-frictional extrudable nanocomposites. It is shown that as compared with pure UHMWPE mechanical properties (ultimate strength, value of elongation at failure) do not vary substantially, but the wear rate under dry sliding friction of polymeric composites UHMWPE + n wt.% PA-b-LLDPE is reduced only when block copolymer weight fraction is less than ≤ 5 wt.%. By the polymeric filling an important technological characteristic - specific pressure of extrusion (that is proportional to melt flow index) might be decreased. Permolecular structure and wear track surfaces of polymer-polymer composites UHMWPE + n wt.% PA-b-LLDPE was examined and numerically characterized.

Effect of Carbon Coating on the Properties of Gamma Irradiated Ultra-High-Molecular-Weight Polyethylene Specimens

2000 ◽  
Vol 28 (3-4) ◽  
pp. 445-449 ◽  
Author(s):  
Debi P. Mukherjee ◽  
Alan L. Ogden ◽  
R. H. Mayeux ◽  
U. Siriwardane ◽  
H. R. Patel
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Carbon Coating ◽  
Gamma Irradiated ◽  
Ultra High Molecular Weight
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