Surface-initiated ATRP from polydopamine-modified TiO2 nanoparticles

Maciej Kopeć (Corresponding Author), Järvi Spanjers, Elio Scavo, Dennis Ernens, Joost Duvigneau, G. Julius Vancso

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)
63 Downloads (Pure)

Abstract

A robust approach for modification of TiO2 nanoparticles with polymer brushes by atom transfer radical polymerization (ATRP) is presented. TiO2 surface was first coated with polydopamine (PDA) followed by immobilization of an ATRP initiator, α-bromoisobutyryl bromide (BiBB). Poly(methyl methacrylate) (PMMA) and poly(butyl acrylate) (PBA) were then grafted from the PDA-modified TiO2 of different size (25 and 300 nm) in DMF at room temperature via supplemental activator reducing agent (SARA) ATRP using only 100 ppm of the copper catalyst. Hybrid core-shell particles with high organic contents (40–88 wt%) and grafting densities (0.16–0.25 nm−2) were obtained. Reaction conducted in the presence of sacrificial initiator confirmed excellent control over the polymerization and produced PMMA and PBA with narrow molecular weight distributions (Mw/Mn < 1.25). Obtained particles were tested as lubricating additives in pipe dope compositions. Addition of polymer-grafted TiO2 to the base grease resulted in a reduced coefficient of friction (COF) and wear over uncoated TiO2 as revealed by reciprocating pin-on-disc tests. The model pipe dopes with PMMA-grafted particles were found to perform on par with commercial American Petroleum Institute (API) dope.

Original languageEnglish
Pages (from-to)291-296
Number of pages6
JournalEuropean polymer journal
Volume106
DOIs
Publication statusPublished - 1 Sep 2018

Fingerprint

Atom transfer radical polymerization
Polymethyl Methacrylate
Polymethyl methacrylates
polymerization
polymethyl methacrylate
Nanoparticles
nanoparticles
initiators
acrylates
Pipe
atoms
Polymers
dopes
Lubricating greases
Reducing agents
Brushes
Molecular weight distribution
greases
Reducing Agents
Petroleum

Keywords

  • UT-Hybrid-D
  • Lubrication
  • Nanocomposites
  • Polydopamine
  • SI-ATRP
  • Titanium dioxide
  • Grafting from

Cite this

@article{b68bda13598c4cf48068232d7ea32d37,
title = "Surface-initiated ATRP from polydopamine-modified TiO2 nanoparticles",
abstract = "A robust approach for modification of TiO2 nanoparticles with polymer brushes by atom transfer radical polymerization (ATRP) is presented. TiO2 surface was first coated with polydopamine (PDA) followed by immobilization of an ATRP initiator, α-bromoisobutyryl bromide (BiBB). Poly(methyl methacrylate) (PMMA) and poly(butyl acrylate) (PBA) were then grafted from the PDA-modified TiO2 of different size (25 and 300 nm) in DMF at room temperature via supplemental activator reducing agent (SARA) ATRP using only 100 ppm of the copper catalyst. Hybrid core-shell particles with high organic contents (40–88 wt{\%}) and grafting densities (0.16–0.25 nm−2) were obtained. Reaction conducted in the presence of sacrificial initiator confirmed excellent control over the polymerization and produced PMMA and PBA with narrow molecular weight distributions (Mw/Mn < 1.25). Obtained particles were tested as lubricating additives in pipe dope compositions. Addition of polymer-grafted TiO2 to the base grease resulted in a reduced coefficient of friction (COF) and wear over uncoated TiO2 as revealed by reciprocating pin-on-disc tests. The model pipe dopes with PMMA-grafted particles were found to perform on par with commercial American Petroleum Institute (API) dope.",
keywords = "UT-Hybrid-D, Lubrication, Nanocomposites, Polydopamine, SI-ATRP, Titanium dioxide, Grafting from",
author = "Maciej Kopeć and J{\"a}rvi Spanjers and Elio Scavo and Dennis Ernens and Joost Duvigneau and {Julius Vancso}, G.",
note = "Elsevier deal",
year = "2018",
month = "9",
day = "1",
doi = "10.1016/j.eurpolymj.2018.07.033",
language = "English",
volume = "106",
pages = "291--296",
journal = "European polymer journal",
issn = "0014-3057",
publisher = "Elsevier",

}

Surface-initiated ATRP from polydopamine-modified TiO2 nanoparticles. / Kopeć, Maciej (Corresponding Author); Spanjers, Järvi; Scavo, Elio; Ernens, Dennis; Duvigneau, Joost; Julius Vancso, G.

In: European polymer journal, Vol. 106, 01.09.2018, p. 291-296.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Surface-initiated ATRP from polydopamine-modified TiO2 nanoparticles

AU - Kopeć, Maciej

AU - Spanjers, Järvi

AU - Scavo, Elio

AU - Ernens, Dennis

AU - Duvigneau, Joost

AU - Julius Vancso, G.

N1 - Elsevier deal

PY - 2018/9/1

Y1 - 2018/9/1

N2 - A robust approach for modification of TiO2 nanoparticles with polymer brushes by atom transfer radical polymerization (ATRP) is presented. TiO2 surface was first coated with polydopamine (PDA) followed by immobilization of an ATRP initiator, α-bromoisobutyryl bromide (BiBB). Poly(methyl methacrylate) (PMMA) and poly(butyl acrylate) (PBA) were then grafted from the PDA-modified TiO2 of different size (25 and 300 nm) in DMF at room temperature via supplemental activator reducing agent (SARA) ATRP using only 100 ppm of the copper catalyst. Hybrid core-shell particles with high organic contents (40–88 wt%) and grafting densities (0.16–0.25 nm−2) were obtained. Reaction conducted in the presence of sacrificial initiator confirmed excellent control over the polymerization and produced PMMA and PBA with narrow molecular weight distributions (Mw/Mn < 1.25). Obtained particles were tested as lubricating additives in pipe dope compositions. Addition of polymer-grafted TiO2 to the base grease resulted in a reduced coefficient of friction (COF) and wear over uncoated TiO2 as revealed by reciprocating pin-on-disc tests. The model pipe dopes with PMMA-grafted particles were found to perform on par with commercial American Petroleum Institute (API) dope.

AB - A robust approach for modification of TiO2 nanoparticles with polymer brushes by atom transfer radical polymerization (ATRP) is presented. TiO2 surface was first coated with polydopamine (PDA) followed by immobilization of an ATRP initiator, α-bromoisobutyryl bromide (BiBB). Poly(methyl methacrylate) (PMMA) and poly(butyl acrylate) (PBA) were then grafted from the PDA-modified TiO2 of different size (25 and 300 nm) in DMF at room temperature via supplemental activator reducing agent (SARA) ATRP using only 100 ppm of the copper catalyst. Hybrid core-shell particles with high organic contents (40–88 wt%) and grafting densities (0.16–0.25 nm−2) were obtained. Reaction conducted in the presence of sacrificial initiator confirmed excellent control over the polymerization and produced PMMA and PBA with narrow molecular weight distributions (Mw/Mn < 1.25). Obtained particles were tested as lubricating additives in pipe dope compositions. Addition of polymer-grafted TiO2 to the base grease resulted in a reduced coefficient of friction (COF) and wear over uncoated TiO2 as revealed by reciprocating pin-on-disc tests. The model pipe dopes with PMMA-grafted particles were found to perform on par with commercial American Petroleum Institute (API) dope.

KW - UT-Hybrid-D

KW - Lubrication

KW - Nanocomposites

KW - Polydopamine

KW - SI-ATRP

KW - Titanium dioxide

KW - Grafting from

UR - http://www.scopus.com/inward/record.url?scp=85050994007&partnerID=8YFLogxK

U2 - 10.1016/j.eurpolymj.2018.07.033

DO - 10.1016/j.eurpolymj.2018.07.033

M3 - Article

VL - 106

SP - 291

EP - 296

JO - European polymer journal

JF - European polymer journal

SN - 0014-3057

ER -