Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles

Qingye Zhou, Shuangxi Wang, Xiaowu Fan, Rigoberto Advincula, Jimmy Mays

Research output: Contribution to journalArticle

148 Citations (Scopus)

Abstract

To demonstrate living anionic surface-initiated polymerization (LASIP) on silica nanoparticles, the initiator precursor 1,1-diphenylethylene (DPE) was functionalized with alkyldimethylchlorosilane and grafted onto silica particle surfaces, n-BuLi was used to activate the DPE, which allowed the anionic polymerization of the styrene monomer to proceed in benzene solution. A high-vacuum reactor was used to allow polymerization from the surface of silica particles under anhydrous solution conditions. The dispersion of the DPE functionalized silica particles showed a distinct red color indicating an activated nanoparticle-DPE-n-BuLi complex suitable for anionic polymerization. The degree and mechanism of polymerization were determined based on characterization of the grafted and detached polystyrene chains using thermogravimetric analysis, size exclusion chromatography, NMR, and Fourier transform infrared spectroscopy. In addition, atomic force microscopy and X-ray photoelectron spectroscopy were used to characterize the polymer-coated nanoparticles. The importance of activation of the grafted initiator, control of aggregation, and removal of the excess n-BuLi for high molecular weight formation is emphasized. While the polydispersities are broader compared to those obtained by solution polymerization of a free initiator, a living anionic polymerization mechanism is still observed.

Original languageEnglish
Pages (from-to)3324-3331
Number of pages8
JournalLangmuir
Volume18
Issue number8
DOIs
Publication statusPublished - 2002 Apr 16
Externally publishedYes

Fingerprint

Silicon Dioxide
Anionic polymerization
Polymers
polymerization
Silica
Polymerization
Nanoparticles
silicon dioxide
nanoparticles
polymers
initiators
Styrene
Living polymerization
Size exclusion chromatography
Polystyrenes
Polydispersity
Benzene
Fourier transform infrared spectroscopy
Thermogravimetric analysis
Atomic force microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles. / Zhou, Qingye; Wang, Shuangxi; Fan, Xiaowu; Advincula, Rigoberto; Mays, Jimmy.

In: Langmuir, Vol. 18, No. 8, 16.04.2002, p. 3324-3331.

Research output: Contribution to journalArticle

Zhou, Q, Wang, S, Fan, X, Advincula, R & Mays, J 2002, 'Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles', Langmuir, vol. 18, no. 8, pp. 3324-3331. https://doi.org/10.1021/la015670c
Zhou, Qingye ; Wang, Shuangxi ; Fan, Xiaowu ; Advincula, Rigoberto ; Mays, Jimmy. / Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles. In: Langmuir. 2002 ; Vol. 18, No. 8. pp. 3324-3331.
@article{ae757d4b95854aef88682e996add4434,
title = "Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles",
abstract = "To demonstrate living anionic surface-initiated polymerization (LASIP) on silica nanoparticles, the initiator precursor 1,1-diphenylethylene (DPE) was functionalized with alkyldimethylchlorosilane and grafted onto silica particle surfaces, n-BuLi was used to activate the DPE, which allowed the anionic polymerization of the styrene monomer to proceed in benzene solution. A high-vacuum reactor was used to allow polymerization from the surface of silica particles under anhydrous solution conditions. The dispersion of the DPE functionalized silica particles showed a distinct red color indicating an activated nanoparticle-DPE-n-BuLi complex suitable for anionic polymerization. The degree and mechanism of polymerization were determined based on characterization of the grafted and detached polystyrene chains using thermogravimetric analysis, size exclusion chromatography, NMR, and Fourier transform infrared spectroscopy. In addition, atomic force microscopy and X-ray photoelectron spectroscopy were used to characterize the polymer-coated nanoparticles. The importance of activation of the grafted initiator, control of aggregation, and removal of the excess n-BuLi for high molecular weight formation is emphasized. While the polydispersities are broader compared to those obtained by solution polymerization of a free initiator, a living anionic polymerization mechanism is still observed.",
author = "Qingye Zhou and Shuangxi Wang and Xiaowu Fan and Rigoberto Advincula and Jimmy Mays",
year = "2002",
month = "4",
day = "16",
doi = "10.1021/la015670c",
language = "English",
volume = "18",
pages = "3324--3331",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "8",

}

TY - JOUR

T1 - Living anionic surface-initiated polymerization (LASIP) of a polymer on silica nanoparticles

AU - Zhou, Qingye

AU - Wang, Shuangxi

AU - Fan, Xiaowu

AU - Advincula, Rigoberto

AU - Mays, Jimmy

PY - 2002/4/16

Y1 - 2002/4/16

N2 - To demonstrate living anionic surface-initiated polymerization (LASIP) on silica nanoparticles, the initiator precursor 1,1-diphenylethylene (DPE) was functionalized with alkyldimethylchlorosilane and grafted onto silica particle surfaces, n-BuLi was used to activate the DPE, which allowed the anionic polymerization of the styrene monomer to proceed in benzene solution. A high-vacuum reactor was used to allow polymerization from the surface of silica particles under anhydrous solution conditions. The dispersion of the DPE functionalized silica particles showed a distinct red color indicating an activated nanoparticle-DPE-n-BuLi complex suitable for anionic polymerization. The degree and mechanism of polymerization were determined based on characterization of the grafted and detached polystyrene chains using thermogravimetric analysis, size exclusion chromatography, NMR, and Fourier transform infrared spectroscopy. In addition, atomic force microscopy and X-ray photoelectron spectroscopy were used to characterize the polymer-coated nanoparticles. The importance of activation of the grafted initiator, control of aggregation, and removal of the excess n-BuLi for high molecular weight formation is emphasized. While the polydispersities are broader compared to those obtained by solution polymerization of a free initiator, a living anionic polymerization mechanism is still observed.

AB - To demonstrate living anionic surface-initiated polymerization (LASIP) on silica nanoparticles, the initiator precursor 1,1-diphenylethylene (DPE) was functionalized with alkyldimethylchlorosilane and grafted onto silica particle surfaces, n-BuLi was used to activate the DPE, which allowed the anionic polymerization of the styrene monomer to proceed in benzene solution. A high-vacuum reactor was used to allow polymerization from the surface of silica particles under anhydrous solution conditions. The dispersion of the DPE functionalized silica particles showed a distinct red color indicating an activated nanoparticle-DPE-n-BuLi complex suitable for anionic polymerization. The degree and mechanism of polymerization were determined based on characterization of the grafted and detached polystyrene chains using thermogravimetric analysis, size exclusion chromatography, NMR, and Fourier transform infrared spectroscopy. In addition, atomic force microscopy and X-ray photoelectron spectroscopy were used to characterize the polymer-coated nanoparticles. The importance of activation of the grafted initiator, control of aggregation, and removal of the excess n-BuLi for high molecular weight formation is emphasized. While the polydispersities are broader compared to those obtained by solution polymerization of a free initiator, a living anionic polymerization mechanism is still observed.

UR - http://www.scopus.com/inward/record.url?scp=0037117931&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037117931&partnerID=8YFLogxK

U2 - 10.1021/la015670c

DO - 10.1021/la015670c

M3 - Article

AN - SCOPUS:0037117931

VL - 18

SP - 3324

EP - 3331

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 8

ER -