Deterioration of bonding capacity of plasma-treated polymer fiber reinforcement

Trejbal, Jan; Nežerka, Václav; Somr, Michael; Fládr, Josef; Potocký, Štěpán; Artemenko, Anna; Tesárek, Pavel

doi:10.1016/j.cemconcomp.2018.03.010

Cited by 23 publications

(12 citation statements)

References 29 publications

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“…Figure 1: Adopted PVA fiber lengths and diameters in related research [16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Fiber Length Fiber Diametermentioning

confidence: 99%

“…erefore, an optimization of fiber length has great significance for HDCCs design. Figure 1 summarizes the PVA fiber length and diameter adopted in 83 related studies, and typical references can be found in [16][17][18][19][20][21][22][23][24][25][26][27][28]. PVA fibers with moderate lengths of 8 mm and 12 mm were universally employed in HDCCs, even though a length of 12 mm has become a universally accepted length.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Ding

Guo

Ren

et al. 2021

Advances in Materials Science and Engineering

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The fiber length has a significant impact on the fiber bridging capacity and the mechanical properties of high ductility cementitious composites (HDCCs), which is related to fiber/matrix interfacial bonding. However, this fundamental knowledge of HDCCs design has rarely been investigated systematically. To this end, this study deeply investigates the effect of the fiber length on the bridging stress and the complementary energy with various fiber/matrix interfacial bonds in theory. Then, the mechanical performances of HDCCs with various fiber lengths and compressive strengths were evaluated experimentally. In micromechanical design, longer fibers can achieve stronger bridging stress and more sufficient complementary energy regardless of the fiber/matrix interfacial bonding properties. However, it should be noted that the increase in bridging capacity was quite slow for the overlong fibers and excessive interfacial bonding. The experiments indicated that overlong fibers (18 mm and 24 mm) easily twined on the mixer blade and were hard to disperse evenly. The HDCCs with shorter fibers displayed better workability. The compressive strength was less affected by the fiber length, and most striking differences were less than 5.0%, while the flexural properties and the tensile properties first increased and then decreased when the fiber length ranged from 6 mm to 24 mm. Consequently, the fibers with lengths of 9 mm and the fibers with lengths of 12 mm were better candidates for the HDCCs with compressive strengths of 30 MPa to 80 MPa, and fibers with lengths of 9 mm caused the HDCCs to exhibit higher ductility properties in general.

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“…Figure 1: Adopted PVA fiber lengths and diameters in related research [16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Fiber Length Fiber Diametermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Ding

Guo

Ren

et al. 2021

Advances in Materials Science and Engineering

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“…Grooves parallel to the fiber axis and granules were found on the surface, indicating that the oxygen and helium plasma treatment damaged the surface morphology of the pile fibers. This may be caused by the physical etching of plasma modification [22]. A large number of active particles were generated during plasma discharge, which bombarded the fiber surface, leading to the gasification of some solids on the fiber and the formation of micro grooves, as shown in Figure 4.…”

Section: Sem Of S Aureus Biofilmmentioning

confidence: 99%

A Textile Pile Debridement Material Consisting of Polyester Fibers for in Vitro Removal of Biofilm

Cheng

et al. 2020

Polymers

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Biofilms formed on skin wound lead to inflammation and a delay of healing. In the present work, a novel textile pile debridement material was prepared and treated by plasma. Samples before and after plasma treatment were characterized by a series of methods, including scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and water uptake capacity. Besides, mechanical, coagulation, and in vitro biofilm removal performances of the textile pile debridement material were evaluated, with a medical gauze as a control. The results demonstrate that the plasma treatment produced corrosions and oxygen-containing polar groups on the fiber surface, offering an enhanced water uptake capacity of the textile pile debridement material. In addition, compressive tests certify the mechanical performances of the textile pile debridement material in both dry and wet conditions. The results from a kinetic clotting time test suggest a favorable ability to promote blood coagulation. Furthermore, the results of an MTT cell viability assay, SEM, and confocal laser scanning microscopy (CLSM) illustrate that the textile pile debridement material demonstrates a more superior in vitro biofilm removal performance than medical gauze. All of these characterizations suggest that the textile pile debridement material can offer a feasible application for clinical wound debridement.

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“…Compared to these methods, cold plasma treatment is relatively eco-friendly, fast, and does not exhibit excessive brittleness. Cold plasma treatment can reduce the surface energy of the polymer surface and thus convert the hydrophobic structure of PP surfaces to hydrophilic, which increases chemical bonding with the cementitious matrix [13]. However, the cold plasma method can still produce detrimental waste unless some specific gas composition is selected [9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Enhanced ITZ in Engineered Polypropylene Fibers for Bond Improvement

2020

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The interfacial transition zone (ITZ) is well known to be a zone of high porosity and lesser strength and is the weak zone in the fiber-reinforced matrix. This study aims to evaluate the improvement in the bonding between engineered polypropylene fibers and the surrounding mortar matrix. The improvement was implemented by modifying the ITZ, which develops between the fibers and the cementitious matrix. Two commercially available repair materials have been used in this study, Mix M and Mix P. Mix M served as the base material for the prepared fibers, whereas Mix P is a fiber-reinforced repair mortar and provides a comparison. A total of six types of mixes have been investigated. The improved bonding is tested by coating the polypropylene fibers with supplementary cementitious materials (SCM) using an innovative patented concept. In this study, silica fume and metakaolin are used as the SCM because of their fine size and pozzolanic capacity. The study involves multiple items of investigation, including mechanical tests such as compressive strength, direct tensile strength, and three-point bending tests. Energy-dispersive X-ray spectroscopy (EDS) of the different mixes helped in evaluating and analyzing the ITZ between the fiber and matrix.

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Deterioration of bonding capacity of plasma-treated polymer fiber reinforcement

Cited by 23 publications

References 29 publications

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

Polyvinyl Alcohol Fiber Length Optimization for High Ductility Cementitious Composites with Different Compressive Strength Grades

A Textile Pile Debridement Material Consisting of Polyester Fibers for in Vitro Removal of Biofilm

Characterization of Enhanced ITZ in Engineered Polypropylene Fibers for Bond Improvement

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