Experimental characterization of contact angle and surface energy on aramid fibers

Hao, Wenfeng; Yao, Xuefeng; Ke, Yuchao; Ma, Yinji; Li, Faxin

doi:10.1080/01694243.2012.727172

Cited by 24 publications

(7 citation statements)

References 28 publications

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“…The initial biological studies were performed with dissolved peptides or with peptides noncovalently adhered to RO membrane coupons (5 × 5 mm) via dip-coating. The DOW Filmtech SW30 RO membranes used in this study are composed of aramid, an aromatic amide with hydrophobicity comparable to PMMA . In contrast to aramid, the methacrylic PMMA polymer is easily chemically modified and offers several different co-polymers with a wide range of physico-chemical properties.…”

Section: Resultsmentioning

confidence: 99%

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Herzberg

Berglin

Eliahu

et al. 2021

ACS Appl. Bio Mater.

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Creation of surfaces resistant to the formation of microbial biofilms via biomimicry has been heralded as a promising strategy to protect a range of different materials ranging from boat hulls to medical devices and surgical instruments. In our current study, we describe the successful transfer of a highly effective natural marine biofilm inhibitor to the 2D surface format. A series of cyclic peptides inspired by the natural equinatoxin II protein produced by Beadlet anemone (Actinia equine) have been evaluated for their ability to inhibit the formation of a mixed marine microbial consortium on polyamide reverse osmosis membranes. In solution, the peptides are shown to effectively inhibit settlement and biofilm formation in a nontoxic manner down to 1 nM concentrations. In addition, our study also illustrates how the peptides can be applied to disperse already established biofilms. Attachment of a hydrophobic palmitic acid tail generates a peptide suited for strong noncovalent surface interactions and allows the generation of stable noncovalent coatings. These adsorbed peptides remain attached to the surface at significant shear stress and also remain active, effectively preventing the biofilm formation over 24 h. Finally, the covalent attachment of the peptides to an acrylate surface was also evaluated and the prepared coatings display a remarkable ability to prevent surface colonization at surface loadings of 55 ng/cm2 over 48 h. The ability to retain the nontoxic antibiofilm activity, documented in solution, in the covalent 2D-format is unprecedented, and this natural peptide motif displays high potential in several material application areas.

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Section: Resultsmentioning

confidence: 99%

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Herzberg

Berglin

Eliahu

et al. 2021

ACS Appl. Bio Mater.

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“…The contact angles as shown in Figure 8 were fitted and measured by Young–Laplace software. Combined with γLp and γLd of water are 51 mJ/m 2 and 21.8 mJ/m 2 , and those of hexane are 0 mJ/m 2 and 18.4 mJ/m 2 [41], the surface energies of PPTA fibers were calculated by Equations (3) and (4), and the results were summarized in Table 2.…”

Section: Resultsmentioning

confidence: 99%

A Novel Method for Deposition of Multi-Walled Carbon Nanotubes onto Poly(p-Phenylene Terephthalamide) Fibers to Enhance Interfacial Adhesion with Rubber Matrix

Yang

Shen

et al. 2019

Polymers

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In order to enhance the interfacial adhesion of poly(p-phenylene terephthalamide) (PPTA) fibers to the rubber composites, a novel method to deposit multi-walled carbon nanotubes (MWCNTs) onto the surface of PPTA fibers has been proposed in this study. This chemical modification was performed through the introduction of epoxy groups by Friedel–Crafts alkylation on the PPTA fibers, the carboxylation of MWCNTs, and the ring-opening reaction between the epoxy groups and the carboxyl groups. The morphologies, chemical structures, and compositions of the surface of PPTA fibers were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The results showed that MWCNTs were uniformly deposited onto the surface of PPTA fibers with the covalent bonds. The measurement of contact angles of the fibers with polar solvent and non-polar solvent indicated that the surface energy of deposited fibers significantly increased by 41.9% compared with the untreated fibers. An electronic tensile tester of single-filament and a universal testing machine were utilized to measure the strength change of the fibers after modification and the interfacial adhesion between the fibers and the rubber matrix, respectively. The results showed that the tensile strength had not been obviously reduced, and the pull-out force and peeling strength of the fibers to the rubber increased by 46.3% and 56.5%, respectively.

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“…The characteristic parameters of the probe liquids, used to evaluate the contact angles, are given in Table 1. 31 The polar and disperse components surface energy were determined using the method of Owens-Wendt-Rabel-Kaelble (OWRK) which allows for a linearization of the contact angles using Equation ( 10) 32…”

Section: Methodsmentioning

confidence: 99%

Natural resources derived biocomposites as potential carriers of green pesticides in agricultural field: Designing and fabrication of a pot‐like device

Viscusi

Liparoti

Pantani

et al. 2021

J of Applied Polymer Sci

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Hemp fibers (HF) are used as filler in pectin to produce biocomposites. To improve the compatibility of the filler with the polymeric matrix, HF are treated through mechanochemically assisted alkaline attack. The effect of the treatment time on the morphology of HF is investigated through atomic force microscopy and infrared spectroscopy. Cinnamic acid, a green pesticide, is added to the composites in order to test the capability of such materials to act as potential devices in the agricultural field. Analysis of thermal, mechanical, barrier properties and surface energy are evaluated on biocomposites and compared either to unfilled pectin or to composites filled with untreated HF. The release of cinnamic acid is evaluated and found to be dependent on the fibers' treatment time. The design and the fabrication of a pot prototype is also reported. The manufacture appears promising as green functional container for plants to be implanted in the ground.

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Experimental characterization of contact angle and surface energy on aramid fibers

Cited by 24 publications

References 28 publications

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

A Novel Method for Deposition of Multi-Walled Carbon Nanotubes onto Poly(p-Phenylene Terephthalamide) Fibers to Enhance Interfacial Adhesion with Rubber Matrix

Natural resources derived biocomposites as potential carriers of green pesticides in agricultural field: Designing and fabrication of a pot‐like device

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