Improving adhesion of electrospun nanofiber mats to supporting substrate by using adhesive bonding

Amini, Golchehr; Gharehaghaji, Ali Akbar

doi:10.1016/j.ijadhadh.2018.08.005

Cited by 18 publications

(12 citation statements)

References 22 publications

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“…The identification of the best factors is very important for conducting a fast and optimized process. For instance, there are different solvent systems for producing Nylon 66 such as pure Formic Acid (FA) [12], mixture of FA/Chloroform [13][14][15] and mixture of FA/Trifluoroethanol (TFE) [16][17][18][19]. The use of the first two solvents results in a very slow electrospinning process (about 0.2-0.3 mL/h), while the third one allows a very fast process with about 0.8-1.2 mL/h [16,20].…”

Section: Composite Laminates Toughened By Polymeric Nanofibersmentioning

confidence: 99%

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

2018

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This paper reviews recent works on the application of nanofibers and nanoparticle reinforcements to enhance the interlaminar fracture toughness, to reduce the impact induced damage and to improve the compression after impact performance of fiber reinforced composites with brittle thermosetting resins. The nanofibers have been mainly used as mats embedded between plies of laminated composites, whereas the nanoparticles have been used in 0D, 1D, 2D, and 3D dimensional patterns to reinforce the matrix and consequently the composite. The reinforcement mechanisms are presented, and a comparison is done between the different papers in the literature. This review shows that in order to have an efficient reinforcement effect, careful consideration is required in the manufacturing, materials selection and reinforcement content and percentage. The selection of the right parameters can provide a tough and impact resistant composite with cost effective reinforcements.

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Section: Composite Laminates Toughened By Polymeric Nanofibersmentioning

confidence: 99%

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

2018

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“…However, spunbond polypropylene (PP) textile, often used as the support and collector during the electrospinning of NFs, is hydrophobic, which can prevent nanofibers from adhering. Adhesion of NFs to textile support can be improved chemically [ 24 ] or thermally [ 25 ], but plasma processing of material surfaces has started to attract attention in recent years. Plasma technology for surface modifications has many advantages compared to wet chemical treatments, such as low toxicity, short one-step easily tunable fabrication, substrate independence, and, if required, a negligible degradation of the original material.…”

Section: Introductionmentioning

confidence: 99%

“…On that account, our work aimed to enhance the adhesion of PCL NFs to spunbond PP fabric modified by the radio-frequency (RF) low-pressure capacitively coupled plasma discharge and the low-temperature atmospheric-pressure RF plasma slit jet (PSJ) [ 40 , 41 ]. In a few studies [ 24 , 25 , 33 , 34 , 35 , 38 , 42 ], adhesion between NFs and textile support is evaluated, and all of them have employed tensile T-peel tests requiring a rather thick nanofibrous mat. Nevertheless, interest in fabricating thin nanofibrous mats that still retain functionality will grow due to the necessity of cost reduction.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

et al. 2023

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Excellent adhesion of electrospun nanofiber (NF) to textile support is crucial for a broad range of their bioapplications, e.g., wound dressing development. We compared the effect of several low- and atmospheric pressure plasma modifications on the adhesion between two parts of composite—polycaprolactone (PCL) nanofibrous mat (functional part) and polypropylene (PP) spunbond fabric (support). The support fabrics were modified before electrospinning by low-pressure plasma oxygen treatment or amine plasma polymer thin film or treated by atmospheric pressure plasma slit jet (PSJ) in argon or argon/nitrogen. The adhesion was evaluated by tensile test and loop test adapted for thin NF mat measurement and the trends obtained by both tests largely agreed. Although all modifications improved the adhesion significantly (at least twice for PSJ treatments), low-pressure oxygen treatment showed to be the most effective as it strengthened adhesion by a factor of six. The adhesion improvement was ascribed to the synergic effect of high treatment homogeneity with the right ratio of surface functional groups and sufficient wettability. The low-pressure modified fabric also stayed long-term hydrophilic (ten months), even though surfaces usually return to a non-wettable state (hydrophobic recovery). In contrast to XPS, highly surface-sensitive water contact angle measurement proved suitable for monitoring subtle surface changes.

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“…Hot melts are used primarily where the process speed matters, such as non-wovens in sanitary products, construction, packaging, bottle labeling, bookbinding, or temporary attachments [ 17 ]. Hot melt adhesives have also found a place in the composites industry to improve the bonding strength of hybrid parts (different types of glass/carbon composites) [ 18 ]; improve the interlaminar toughness in lightweight composites [ 19 ]; increase the adhesion between the nanofibrous mat and its supporting woven polyester fabric [ 20 ] or as the conductive adhesive to provide an electrically conductive layer between bonding parts. So far, there are only a few publications describing ECAs based on hot melt adhesives, such as polyurethane [ 21 ], polyolefines [ 22 ], and our previous work on polyamide-based hot melts [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Electrically Conductive Adhesive Based on Thermoplastic Hot Melt Copolyamide and Multi-Walled Carbon Nanotubes

2022

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For the bonding of the lightweight composite parts, it is desired to apply electrically conductive adhesive to maintain the ability to shield electromagnetic interference. Among various solvent-based adhesives, there is a new group of thermoplastic hot melt adhesives that are easy to use, solidify quickly, and are environment-friendly. To make them electrically conductive, a copolyamide-based hot melt adhesive was mixed with 5 and 10 wt% of carbon nanotubes using a melt-blending process. Well-dispersed nanotubes, observed by a high-resolution scanning microscope, led to the formation of a percolated network at both concentrations. It resulted in the electrical conductivity of 3.38 S/m achieved for 10 wt% with a bonding strength of 4.8 MPa examined by a lap shear test. Compared to neat copolyamide, Young’s modulus increased up to 0.6 GPa and tensile strength up to 30.4 MPa. The carbon nanotubes improved the thermal stability of 20 °C and shifted the glass transition of 10 °C to a higher value. The very low viscosity of the neat adhesive increased about 5–6 orders of magnitude at both concentrations, even at elevated temperatures. With a simultaneous growth in storage and loss modulus this indicates the strong interactions between polymer and carbon nanotubes.

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Improving adhesion of electrospun nanofiber mats to supporting substrate by using adhesive bonding

Cited by 18 publications

References 22 publications

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

Electrically Conductive Adhesive Based on Thermoplastic Hot Melt Copolyamide and Multi-Walled Carbon Nanotubes

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