Induction heating for surface triggering styrene polymerization on titanium modified with ATRP initiator

Barthélémy, Bastien; Devillers, Sébastien; Minet, Isabelle; Delhalle, Joseph; Mekhalif, Zineb

doi:10.1016/j.jcis.2010.11.057

Cited by 23 publications

(23 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9][10][11] It is an effective method of grafting polymers from titanium surfaces. [12][13][14][15][16][17] More recently, radical polymerization grafting was improved by the reversible addition-fragmentation chain-transfer (RAFT) grafting method to allow the direct polymerization of a wide range of functional monomers in a controlled fashion with narrowly dispersed molecular weight. [18][19][20][21][22] It has already been shown that polymers bearing appropriate chemical functions can modulate cell attachment, spreading, and activity on these bioactive polymers.…”

Section: Introductionmentioning

confidence: 99%

“…For titanium and titanium alloys, successful attachment has been reported using both siloxane and phosphonate "head groups." 13,16,[27][28][29][30] A recent study showed that phosphonic acids would not form a robust film directly onto the native surface of titanium nitride and additional surface oxidation a) Present address: General Electric Global Research One Research Circle, Niskayuna, New York 12309. Author to whom correspondence should be addressed; electronic mail: zorn@ge.com of the titanium nitride was required to form robust films.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Grafting titanium nitride surfaces with sodium styrene sulfonate thin films

2014

View full text Add to dashboard Cite

The importance of titanium nitride lies in its high hardness and its remarkable resistance to wear and corrosion, which has led to its use as a coating for the heads of hip prostheses, dental implants and dental surgery tools. However, the usefulness of titanium nitride coatings for biomedical applications could be significantly enhanced by modifying their surface with a bioactive polymer film. The main focus of the present work was to graft a bioactive poly(sodium styrene sulfonate) (pNaSS) thin film from titanium nitride surfaces via a two-step procedure: first modifying the surface with 3-methacryloxypropyltrimethoxysilane (MPS) and then grafting the pNaSS film from the MPS modified titanium through free radical polymerization. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used after each step to characterize success and completeness of each reaction. The surface region of the titanium nitride prior to MPS functionalization and NaSS grafting contained a mixture of titanium nitride, oxynitride, oxide species as well as adventitious surface contaminants. After MPS functionalization, Si was detected by XPS, and characteristic MPS fragments were detected by ToF-SIMS. After NaSS grafting, Na and S were detected by XPS and characteristic NaSS fragments were detected by ToF-SIMS. The XPS determined thicknesses of the MPS and NaSS overlayers were $1.5 and $1.7 nm, respectively. The pNaSS film density was estimated by the toluidine blue colorimetric assay to be 260 6 70 ng/cm 2

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Grafting titanium nitride surfaces with sodium styrene sulfonate thin films

2014

View full text Add to dashboard Cite

show abstract

“…Titanium is among the metals with wide application in the field of cardiovascular devices due to its biocompatibility and shape elastic memory properties [2]. This wide application is attributed to its excellent corrosion resistance and suitable mechanical properties [3]. Titanium showed good properties to be a suitable scaffold for tissue-engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Application of anodized titanium for enhanced recruitment of endothelial progenitor cells

Moradi¹,

Behjati

Kazemi

2012

Nanoscale Res Lett

View full text Add to dashboard Cite

ObjectivesTo study the efficacy of an effective anodized titanium surface with enhanced attachment of endothelial progenitor cell (EPC).BackgroundIn-stent restenosis is a major obstacle for vascular patency after catheter-based intravascular interventions. Recently, stents that capture EPCs have been paid attention in order to make a functional endothelialized layer at the site of stent-induced endothelial denudation. Anodized titanium has been shown to enhance stem cell attachment. Anodization is a quick and inexpensive method, which can provide suitable stent surface.MethodsSurface topography was examined by high-resolution scanning electron microscopy (SEM). Substrates were co-cultured with EPCs at second passage in 24-well culture plates. Evaluation of cell growth, proliferation, viability, surface cytotoxicity and cell adhesion was performed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test and 4,6-diamidino-2-phenylindole dihydrochloride staining. For platelet attachment, platelets added to substrates were evaluated under SEM.ResultsThe average MTT values for tissue culture polystyrene plate, unanodized and anodized titanium with nanostructure were equal to 0.49, 0.16 and 0.72, respectively (P < 0.05). The surface had no cytotoxic effects on cells. The average cell attachment results showed that 9,955 ± 461.18, 3,300 ± 197.98 and 11,359 ± 458.10 EPCs were attached per well of tissue culture polystyrene plate, unanodized and anodized titanium surfaces, respectively (P < 0.05).ConclusionsAnodized titanium surfaces can be potentially applied for devices that need enhanced recruitment of EPCs. This unique property makes these anodized surfaces good and cheap candidates for designing cardiovascular medical devices as endovascular stents.

show abstract

“…ATRP is a versatile technique for the controlled polymerization of wide variety of functional monomers, and can be used to synthesis block copolymers since the end groups remain active at the end of the polymerization [22]. ATRP has been used in the surface modification of inorganic particles and substrates [23][24][25][26][27]. Barthelemy et al [24] reported that surface initiated ATRP of styrene was carried out on titanium substrates.…”

Section: Introductionmentioning

confidence: 99%

“…ATRP has been used in the surface modification of inorganic particles and substrates [23][24][25][26][27]. Barthelemy et al [24] reported that surface initiated ATRP of styrene was carried out on titanium substrates. Kitano et al [26] investigated that a polymer brush of 2-(2-methoxyethoxy)ethyl methacrylate (MDM) was grafted to a glass substrate.…”

Section: Introductionmentioning

confidence: 99%