Infrared imaging of surface confluent polydopamine (PDA) films at the nanoscale

Král, Martin; Dendisová, Marcela; Matějka, Pavel; Svoboda, Ján; Pop‐Georgievski, Ognen

doi:10.1016/j.colsurfb.2022.112954

Cited by 8 publications

(5 citation statements)

References 43 publications

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“…The rinsed discs were dipped into dopamine solution (2 mg/mL in 10 mM Tris, pH 8.5) for 24 h in the dark to obtain a polydopamine (PDA) anchoring layer. Polydopamine (PDA), as a widely used adhesive material, is used to functionalize various surfaces due to its high catechol content [40,41]. The hydrogel-coated Ti6Al4V was prepared via UV irradiation technology and thermal treatment.…”

Section: Preparation Of Hydrogel-coated Ti6al4vmentioning

confidence: 99%

Crosslinked Polymer Coatings of Poly (Acrylic Acid-co-acrylamide)/Polyethyleneimine (P(AA-co-AAm)/PEI) on Titanium Alloy with Excellent Lubrication Performance for Artificial Joints

Deng,

Xu,

Nie

et al. 2023

Coatings

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The development of coatings with efficient lubrication and load-bearing capacity is an urgent need for artificial joints. Here, we successfully fabricated poly (acrylic acid-co-acrylamide)/polyethyleneimine (P(AA-co-AAm)/PEI) coating on titanium alloy (Ti6Al4V) surface via UV irradiation and thermal treatment technique. The dual crosslinked network structures were composed of a P(AA-co-AAm) network via free radical polymerization and a PAA-co-PEI network via thermal crosslinking of amine and carboxyl groups. The thermally crosslinked P(AA-co-AAm)/PEI coatings exhibit a stable low friction coefficient (approximately 0.022) and exceptionally low wear volume, with a 93.8% and 92.6% reduction, respectively, in comparison to the pristine Ti6Al4V. These thermally crosslinked P(AA-co-AAm)/PEI hydrogel coatings exhibit excellent lubrication and anti-wear properties, providing a strategy for developing novel lubricating coatings in the biomedical field.

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Section: Preparation Of Hydrogel-coated Ti6al4vmentioning

confidence: 99%

Crosslinked Polymer Coatings of Poly (Acrylic Acid-co-acrylamide)/Polyethyleneimine (P(AA-co-AAm)/PEI) on Titanium Alloy with Excellent Lubrication Performance for Artificial Joints

Deng,

Xu,

Nie

et al. 2023

Coatings

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“…For further details about the principles of this technique, kindly refer to the cited literature. − The schematic experimental setup can be seen in Figure S1 in the Supporting Information. Nowadays, IR-sSNOM plays a priceless role in numerous scientific fields including, for example, semiconductor research, − physical chemistry, biophysical chemistry, or the previously mentioned polymer-related application fields. , …”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, IR-sSNOM plays a priceless role in numerous scientific fields including, for example, semiconductor research, 27−29 physical chemistry, 30 biophysical chemistry, 31 or the previously mentioned polymer-related application fields. 32,33 In this study, we aim to demonstrate the capabilities of the IR-sSNOM technique when investigating complex membrane samples represented by a series of poly(vinylidene fluoride) (PVDF) samples modified with 2-(methacryloyloxyethyl)trimethylammonium iodide (QDMA) and/or methacryloyloxyethyl phosphorylcholine (MPC). These membranes, much more desirable in current practice due to their specific properties, such as high biodegradability, represent a typical example of "hard-to-handle" samples, mainly due to their thermal instability and mechanical vulnerability.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Modified PVDF Membranes Using Fourier Transform Infrared and Raman Microscopy and Infrared Nanoimaging: Challenges and Advantages of Individual Methods

Kmetík,

Kopal,

Král

et al. 2024

ACS Omega

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Polymer materials are integral to diverse scientific fields, including chemical engineering and biochemical research, as well as analytical and physical chemistry. This study focuses on the characterization of modified poly(vinylidene fluoride) (PVDF) membranes from both physical and chemical perspectives. Unfortunately, current surface characterization methods face various challenges when simultaneously measuring diverse material properties such as morphology and chemical composition. Addressing this issue, we introduce infrared scattering scanning near-field optical microscopy (IR-sSNOM), a modern technique with the ability to overcome limitations and provide simultaneous topographical, mechanical, and chemical information. We demonstrate the capabilities of IR-sSNOM for investigation of four samples of PVDF membranes modified with 2-(methacryloyloxyethyl)trimethylammonium iodide and/or methacryloyloxyethyl phosphorylcholine in various ratios. These membranes, desirable for their specific properties, represent a challenging material for analysis due to their thermal instability and mechanical vulnerability. Employing Fourier transform infrared (FTIR) microscopy, IR-sSNOM, and Raman microscopy, we successfully overcame these challenges by carefully selecting the experimental parameters and performing detailed characterization of the polymer samples. Valuable insights into morphological and chemical homogeneity, the abundance of modifying side chains, and the distribution of different crystal phases of PVDF were obtained. Most notably, the presence of modifying side chains was confirmed by FTIR microscopy, the Raman spectral mapping revealed the distribution of crystalline phases of the studied polymer, and the IR-sSNOM showed the abundance of chemically diverse aggregates on the surface of the membranes, thanks to the unique nanometer-scale resolution and chemical sensitivity of this technique. This comprehensive approach represents a powerful toolset for characterization of polymeric materials at the nano- and microscale. We believe that this methodology can be applied to similar samples, provided that their thermal stability is considered, opening avenues for detailed exploration of physical and chemical properties in various scientific applications.

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“…These properties make polydopamine highly applicable in cancer detection, drug delivery, and treating cancer tumors [6,7]. Polydopamine is widely used in biomedical applications as an adhesive layer and protective coating, as it presents low toxicity and bioconjugation [8,9]. Zhou et al mentioned that polydopamine hydrogels have applications in preventing and treating oral diseases like oral ulcers, dentin caries, enamel caries, and peri-implantitis [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Polydopamine and Curcumin on Physicochemical and Mechanical Properties of Polymeric Blends

Tahir,

Sionkowska

2023

Materials

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In this study, we prepared composites made from polyvinyl alcohol (PVA), sodium alginate (SA), curcumin (Cur), and polydopamine (PD). The film-forming properties of the composites were researched for potential wound-healing applications. The structures of the polymer blends and composites were studied by FTIR spectroscopy and microscopic observations (AFM and SEM). The mechanical properties were measured using a Zwick Roell testing machine. It was observed that the formation of a polymeric film based on the blend of polyvinyl alcohol and sodium alginate led to the generation of pores. The presence of curcumin in the composite resulted in the alteration of the blend properties. After solvent evaporation, the polymeric blend of PVA, SA, and curcumin formed a stable polymeric film, but the film showed poor mechanical properties. The addition of polydopamine led to an improvement in the mechanical strength of the film and an increase in its surface roughness. A polymeric film of sodium alginate presented the highest surface roughness value among all the studied specimens (66.6 nm), whereas polyvinyl alcohol showed the lowest value (1.60 nm). The roughness of the composites made of PVA/SA/Cur and PVA/SA/Cur/PD showed a value of about 25 nm. Sodium alginate showed the highest values of Young’s modulus (4.10 GPa), stress (32.73 N), and tensile strength (98.48 MPa). The addition of PD to PVA/SA/Cur led to an improvement in the mechanical properties. Improved mechanical properties and appropriate surface roughness may suggest that prepared blends can be used for the preparation of wound-healing materials.

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Infrared imaging of surface confluent polydopamine (PDA) films at the nanoscale

Cited by 8 publications

References 43 publications

Crosslinked Polymer Coatings of Poly (Acrylic Acid-co-acrylamide)/Polyethyleneimine (P(AA-co-AAm)/PEI) on Titanium Alloy with Excellent Lubrication Performance for Artificial Joints

Crosslinked Polymer Coatings of Poly (Acrylic Acid-co-acrylamide)/Polyethyleneimine (P(AA-co-AAm)/PEI) on Titanium Alloy with Excellent Lubrication Performance for Artificial Joints

Characterization of Modified PVDF Membranes Using Fourier Transform Infrared and Raman Microscopy and Infrared Nanoimaging: Challenges and Advantages of Individual Methods

Effect of Polydopamine and Curcumin on Physicochemical and Mechanical Properties of Polymeric Blends

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