PMID- 30976777
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 11
IP  - 17
DP  - 2019 Apr 25
TI  - Core-shell nanospheres to achieve ultralow friction polymer nanocomposites with 
      superior mechanical properties.
PG  - 8237-8246
LID - 10.1039/c9nr00767a [doi]
AB  - Core-shell nanospheres have been widely used in catalysis, batteries, medicine, 
      etc. owing to their unique structural characteristics, which exhibit optimal 
      performance and integrated functions of both the core and shell materials. To 
      simultaneously achieve outstanding mechanical properties and remarkable 
      lubrication properties in desirable polymer composites, core-shell nanospheres 
      with polytetrafluoroethylene (PTFE) as the core and poly methyl methacrylate 
      (PMMA) as the shell have been adopted as structural units to form bulk 
      nanocomposites. We demonstrated that the mechanical and lubrication properties of 
      the nanocomposites prepared using core-shell nanospheres as the continuous matrix 
      were dramatically improved. Specifically, when compared with that of pure PTFE, 
      the compressive strength of the PTFE@PMMA nanocomposite obviously increased up to 
      one order of magnitude (from  approximately 9 to  approximately 90 MPa), the friction coefficient reduced to 
      25% (the lowest value was 0.03), and the wear rate decreased up to two orders of 
      magnitude. Moreover, the mechanical and lubrication properties of the 
      nanocomposites could be adjusted by changing the core-shell ratio, and an 
      appropriate core-shell ratio was beneficial for achieving the desired 
      comprehensive properties. It has been proposed that the properties, such as the 
      confinement effect, improved dispersion capacity, etc., imparted by the 
      core-shell structure effectively lead to high dispersion of the reinforcement 
      phase, improvement of the binding force of the transfer film to the friction 
      surface, and interruption of the wear process of the polymer composite.
FAU - Zhang, Lin
AU  - Zhang L
AD  - State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua 
      University, Beijing 100084, China. xgx2014@tsinghua.edu.cn.
FAU - Ren, Yilong
AU  - Ren Y
FAU - Peng, Shiguang
AU  - Peng S
FAU - Guo, Dan
AU  - Guo D
FAU - Wen, Shizhu
AU  - Wen S
FAU - Luo, Jianbin
AU  - Luo J
FAU - Xie, Guoxin
AU  - Xie G
LA  - eng
PT  - Journal Article
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
EDAT- 2019/04/13 06:00
MHDA- 2019/04/13 06:01
CRDT- 2019/04/13 06:00
PHST- 2019/04/13 06:00 [pubmed]
PHST- 2019/04/13 06:01 [medline]
PHST- 2019/04/13 06:00 [entrez]
AID - 10.1039/c9nr00767a [doi]
PST - ppublish
SO  - Nanoscale. 2019 Apr 25;11(17):8237-8246. doi: 10.1039/c9nr00767a.