Urethanes PDMS-based: Functional hybrid coatings for metallic dental implants

Aguiar, Kelen Menezes Flores Rossi de; Nascimento, Matheus Vieira; Faccioni, Juliano L.; Noeske, Michael; Gätjen, Linda; Rischka, Klaus; Rodrigues-Filho, Ubirajara P.

doi:10.1016/j.apsusc.2019.04.058

Cited by 18 publications

(14 citation statements)

References 68 publications

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“…The Young Modulus can be affected by treatments that may be applied to PDMS, by hardening temperature and time, and by the mixing ratio used to fabricate the PDMS samples [ 42 , 96 , 97 ]; X-ray photoelectron spectroscopy (XPS) is a technique based on the photoelectric effect, which allows identification of the elemental composition of the material. This method is useful when it is needed to verify if any changes in surface composition occurred after the PDMS received any treatment [ 38 , 39 , 98 ]; Fourier Transform infrared spectroscopy (FTIR) is a method used to obtain the infrared spectrum of absorption or transmission of the PDMS sample. This technique allows examination of the effect of some treatment on the cross-linking of PDMS [ 38 , 42 , 99 ].…”

Section: Methods To Characterize Pdmsmentioning

confidence: 99%

“…Such implants are usually fabricated with biomedical grade metals ( tantalum, zirconium, niobium), as well as titanium and its alloys [174]. However, t present some limitations concerning blood compatibility, bone conductivity and bioa ity [38]. When developing an implant, some important aspects should be taken in con eration: biocompatibility, osseointegration, corrosion resistance and micro-invasiven Osseointegration is related to the effective linkage between the metal and the bon…”

Section: Pdms-based Coatings For Medical Implantsmentioning

confidence: 99%

“…PDMS has also been investigated in the field of medical implants [ 38 , 39 , 40 , 41 , 42 ]. These types of implants are usually made with titanium or its alloys; however, such materials do not allow a good osseointegration [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Properties and Applications of PDMS for Biomedical Engineering: A Review

Miranda

Souza

Sousa

et al. 2021

JFB

324

170

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Polydimethylsiloxane (PDMS) is an elastomer with excellent optical, electrical and mechanical properties, which makes it well-suited for several engineering applications. Due to its biocompatibility, PDMS is widely used for biomedical purposes. This widespread use has also led to the massification of the soft-lithography technique, introduced for facilitating the rapid prototyping of micro and nanostructures using elastomeric materials, most notably PDMS. This technique has allowed advances in microfluidic, electronic and biomedical fields. In this review, an overview of the properties of PDMS and some of its commonly used treatments, aiming at the suitability to those fields’ needs, are presented. Applications such as microchips in the biomedical field, replication of cardiovascular flow and medical implants are also reviewed.

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Section: Methods To Characterize Pdmsmentioning

confidence: 99%

Section: Pdms-based Coatings For Medical Implantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Properties and Applications of PDMS for Biomedical Engineering: A Review

Miranda

Souza

Sousa

et al. 2021

JFB

324

170

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“…Sol-gel coatings with anticorrosive properties for biomedical application were also developed using polydimethylsiloxane (PDMS), DMDES polymerized chains, and TEOS as precursors [17]. In addition, PDMS-derived coatings proved to be non-cytotoxic [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Sol-gel coatings made using methyl-modified alkoxysilanes: The balance between protection and bioactivation

Romero‐Gavilán

Almeida

Cerqueira

et al. 2020

Progress in Organic Coatings

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The osteogenic properties displayed by hybrid silica sol-gel materials make these compositions perfect candidates to be employed in bone tissue engineering applications. The present study aims to develop and characterize hybrid silica coatings, synthetized from mixtures between tetraethylorthosilicate (TEOS) and three different methyl-modified alkoxysilanes: trimethoxymethylsilane (MTMS), dimethyldiethoxylsilane (DMDES) and polydimethylsiloxane (PDMS). The comparison of the properties of these materials would allow to determinate which one is the best option to be applied onto metallic prosthesis for bone tissue application. After optimizing the synthesis parameters, the developed coatings were characterized using Fourier transform infrared spectrometry (FT-IR), 1 H and 29 Si solid state Nuclear Magnetic Resonance (1 H-NMR and 29 Si-MNR), cross-cut tests, contact angle measurements, optical profilometry, hydrolytic degradation tests and electrochemical impedance spectroscopy essays (EIS). Homogeneous and well-adhered coatings were obtained with the three methyl-modified reagents. However, different behaviours of metal protection against corrosion, hydrophilicity and degradation kinetics resulted depending on the initial precursor. The MTMS-based coating showed the highest hydrophilicity and degradation kinetics, properties that can lead to a greater bioactivity (Si release). While PDMS and DMDES-based coatings presented a higher barrier properties. From the physicochemical standpoint, all these materials presented interesting characteristics to be employed as coatings for biomedical applications.

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PDMS-urethanesil hybrid multifunctional materials: combining CO2 use and sol–gel processing

Günther

Lima

Aguiar

et al. 2020

J Sol-Gel Sci Technol

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CO2 mitigation by cycloaddition to bis-epoxides to obtain bis-cyclocarbonates (CC) paved one way to a new class of polyurethanes (PUs), the non-isocyanate polyurethanes (NIPUs). By using molecules functionalized with alkoxysilyl groups as end chain it is possible to obtain hybrid NIPUs, also called urethanesils, by Sol-Gel chemistry. Using bis-cyclocarbonate polydimethylsiloxane (CCPDMS) with proper diamines and end-chain amino silanes followed by sol-gel processing leads to versatile hybrid non-isocyanate polydimethylsiloxane urethanes (PDMS-urethanesil). This review reports-besides our recent studies about PDMS-urethanesil materials-the sol-gel chemistry applied to synthesize urethanesil and its applications. While the antimicrobial, photochromic, and anticorrosion properties of urethanesil loaded with phosphotungstic acid as well as the luminescent effect of material loaded with Eu 3+ have already been reported, antimicrobial features of urethanesil loaded with phosphoric acid are our newest findings which we herein report for the first time. The impact of the inorganic acid used on the sol-gel process is highlighted together with the importance of antibiofouling properties. Although the antibiofouling mechanism is still under investigation, the broad spectrum of action of phosphoric acid loaded urethanesil is worth mentioning, since it has been tested to be efficient against some pathogenic bacteria including a drug resistant Staphylococcus aureus strain as well as pathogenic fungi and yeast. Due to the simple, straightforward, and highly reproducible synthesis as well as the opportunity to obtain versatile materials with tuneable mechanical and physical properties, this new class of hybrid materials promises to be applicable in different industrial fields.

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Urethanes PDMS-based: Functional hybrid coatings for metallic dental implants

Cited by 18 publications

References 68 publications

Properties and Applications of PDMS for Biomedical Engineering: A Review

Properties and Applications of PDMS for Biomedical Engineering: A Review

Sol-gel coatings made using methyl-modified alkoxysilanes: The balance between protection and bioactivation

PDMS-urethanesil hybrid multifunctional materials: combining CO2 use and sol–gel processing

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