scholarly journals Block Copolymer Nanoparticles Prepared via Polymerization-Induced Self-Assembly Provide Excellent Boundary Lubrication Performance for Next-Generation Ultralow-Viscosity Automotive Engine Oils

2019 ◽  
Vol 11 (36) ◽  
pp. 33364-33369 ◽  
Author(s):  
Matthew J. Derry ◽  
Timothy Smith ◽  
Paul S. O’Hora ◽  
Steven P. Armes
Keyword(s):  
Block Copolymer ◽  
Boundary Lubrication ◽  
Self Assembly ◽  
Next Generation ◽  
Automotive Engine ◽  
Engine Oils ◽  
Lubrication Performance

scholarly journals Lubrication Performance of Engine Commercial Oils with Different Performance Levels: The Effect of Engine Synthetic Oil Aging on Piston Ring Tribology under Real Engine Conditions

Lubricants ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 90 ◽  
Author(s):  
Pantelis Nikolakopoulos ◽  
Stamatis Mavroudis ◽  
Anastasios Zavos
Keyword(s):  
Piston Ring ◽  
Engine Oil ◽  
Performance Levels ◽  
Automotive Engine ◽  
Engine Oils ◽  
Shear Rates ◽  
Lubrication Performance ◽  
Computational Fluid Dynamics Cfd ◽  
Engine Systems

To further improve efficiency in automotive engine systems, it is important to understand the generation of friction in its components. Accurate simulation and modeling of friction in machine components is, amongst other things, dependent on realistic lubricant rheology and lubricant properties, where especially the latter may change as the machine ages. Some results of research under laboratory conditions on the aging of engine commercial oils with different performance levels (mineral SAE 30, synthetic SAE10W-40, and bio-based) are presented in this paper. The key role of the action of pressure and temperature in engine oils’ aging is described. The paper includes the results of experiments over time in laboratory testing of a single cylinder motorbike. The aging of engine oil causes changes to its dynamic viscosity value. The aim of this work is to evaluate changes due to temperature and pressure in viscosity of engine oil over its lifetime and to perform uncertainty analysis of the measured values. The results are presented as the characteristics of viscosity and time in various temperatures and the shear rates/pressures. This paper also includes a Computational Fluid Dynamics (CFD) model, applying the experimental results in the piston ring tribology problem.

Fabrication of Sub-3 nm Feature Size Based on Block Copolymer Self-Assembly for Next-Generation Nanolithography

2017 ◽  
Vol 50 (17) ◽  
pp. 6813-6818 ◽  
Author(s):  
Jongheon Kwak ◽  
Avnish Kumar Mishra ◽  
Jaeyong Lee ◽  
Kyu Seong Lee ◽  
Chungryong Choi ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Next Generation ◽  
Feature Size

The Self-Assembly of an Amphiphilic Block Copolymer: A Dissipative Particle Dynamics Study

2005 ◽  
Vol 42 (3) ◽  
pp. 180-183 ◽  
Author(s):  
S. G. Schulz ◽  
U. Frieske ◽  
H. Kuhn ◽  
G. Schmid ◽  
F. Müller ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
The Self ◽  
Amphiphilic Block Copolymer

Nanoscratch-Directed Self-Assembly of Block Copolymer Thin Films

2021 ◽  
Vol 13 (4) ◽  
pp. 5772-5781
Author(s):  
Dong Hyup Kim ◽  
Ahram Suh ◽  
Geonhyeong Park ◽  
Dong Ki Yoon ◽  
So Youn Kim
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Self Assembly

Oxidation and ATP dual-responsive block copolymer containing tertiary sulfoniums: self-assembly, protein complexation and triggered release

2021 ◽  
Author(s):  
Yanfen Jiang ◽  
Shuqi Dong ◽  
Guoyang Qin ◽  
Li Liu ◽  
Hanying Zhao
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Phenylboronic Acid ◽  
Cationic Polymer ◽  
Release Profile ◽  
Triggered Release ◽  
Dual Responsive ◽  
Protein Complexation

Alkylation of thioether-containing block copolymer simultaneously incorporated sulfoniums and phenylboronic acid moieties. The co-assembly of this cationic polymer and protein generated micelles with an H2O2-and ATP-responsive release profile.

scholarly journals Mesoporous Titanium Oxynitride Monoliths from Block Copolymer-Directed Self-Assembly of Metal–Urea Additives

Langmuir ◽  
2020 ◽  
Vol 36 (36) ◽  
pp. 10803-10810
Author(s):  
Yun Li ◽  
Raymond Horia ◽  
Wei Xin Tan ◽  
Nathawat Larbaram ◽  
Wardhana A. Sasangka ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Self Assembly

Synthesis of azobenzene-containing liquid crystalline block copolymer nanoparticles via polymerization induced hierarchical self-assembly

2021 ◽  
Author(s):  
Wei Wen ◽  
Wangqi Ouyang ◽  
Song Guan ◽  
Aihua Chen
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Facile Synthesis ◽  
Liquid Crystalline Nanoparticles

A facile synthesis of non-spherical photoresponsive azobenzene-containing liquid crystalline nanoparticles via polymerization-induced hierarchical self-assembly (PIHSA).

Synthesis of PMMA-b-PS Block Copolymer by Emulsion ATRP and its Self-Assembly Property

2013 ◽  
Vol 705 ◽  
pp. 115-119
Author(s):  
Bao Yong Tian ◽  
Er Jun Tang ◽  
Miao Yuan ◽  
Rui Xia Hao ◽  
Cun Man Li ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Block Copolymer ◽  
Self Assembly ◽  
Potential Application ◽  
Morphological Characteristic ◽  
Living Polymerization ◽  
The Self ◽  
Emulsion System ◽  
Copolymer Concentration ◽  
Ft Ir

The well-defined block copolymer PMMA-b-PS was prepared by two-step ATRP in emulsion system. GPC results indicate that Mn increased linearly with conversion and polydispersity remained relatively narrow. It presents the characteristics of living polymerization in emulsion system. FT-IR demonstrated that block copolymer PMMA-b-PS could be successfully synthesized by ATRP with macroinitiator PMMA-Cl in emulsion system. The morphological characteristic of the self-assembly depends on the block copolymer concentration and transforms between spheres and rodlike micelles. The property indicates a perfect potential application in drug delivery materials.

Sign in / Sign up

Export Citation Format

Share Document