2026-04-17T20:37:16Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/110992025-11-26T01:05:33Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823
Repositorio Institucional de la Universidad de Burgos
author
Ruiz Fernández, Virginia
author
Yate, Luis
author
Langer, Judith
author
Kosta, Ivet
author
Grande, Hans J.
author
Tena Zaera, Ramón
2025-11-25T11:36:48Z
2025-11-25T11:36:48Z
2019-09
0301-679X
https://hdl.handle.net/10259/11099
10.1016/j.triboint.2019.05.001
Poly(ethylene glycol) (PEG) chains were covalently grafted onto carbon black (CB) using a PEG-terminated trimethoxysilane, yielding PEGylated CB additives (CB-SiPEG) with different SiPEG contents. Unlike pristine CB, CB-SiPEG was readily dispersed in PEG200 base oil, with CB-SiPEG hydrodynamic particle sizes being considerably smaller than those of pristine CB. At optimal SiPEG content, friction coefficient and specific wear rate in ball-on-disk tribometer tests were reduced by 35% and 67% respectively, with 1% wt. CB-SiPEG compared to PEG200 alone. In contrast, pristine CB, alone or with unbound SiPEG, did not show friction-reducing or antiwear capacity. Disk analysis supports CB-SiPEG surface deposition forming a protective tribofilm. Hydrodynamic particle size and lubricating performance of CB-SiPEG/PEG200 blends were preserved after 6 months, indicating high dispersion stability.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Carbon black
PEGylation
Lubricant nanoadditives
High dispersibility
PEGylated carbon black as lubricant nanoadditive with enhanced dispersion stability and tribological performance
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/11099/1/Ruiz-Tribol_Int_2019.pdf
File
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Ruiz-Tribol_Int_2019.pdf