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RISS 인기검색어
- 검색키워드
- 저자 : Christine Campagne (검색결과 2 건)
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Development and Surface State Characterization of a Spacer Waterproof Breathable Fabric
Imene Ghezal,Ali Moussa,Imed Ben Marzoug,Ahmida El-Achari,Christine Campagne,Faouzi Sakli 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4
This research reports the designing and the optimization of a waterproof breathable fabric. A new waterproofbreathable fabric made by coating a double sided spacer knit with a mixture of an acrylic paste and a fluorocarbon resin ispresented. The treated fabric can be used for producing outdoor garments. The surface states of treated samples werecharacterized by using the assessment of the coating add-on (%), water contact angle (o), surface free energy (mN·m-1), androughness (mm). The main coating process parameters were studied by using the Box-Behnken experimental design. It wasproved that the quantity of acrylic paste (g·m-2) and the reticulation time (min) have the most significant effect on the coatingadd-on value (%). The surface free energy (mN·m-1) is affected by the three studied factors. Roughness was also evaluatedbefore and after the coating treatment. However, no significant variation in values was noticed. Optimum responses areobtained with 2.71 % of fluorocarbon resin, 412.00 g·m-2 of acrylic paste, and a reticulation time equal to 13.52 minutes. Optimized values for the coating add-on, SFE, and roughness are equal to 79.716 %, 29.17 mN·m-1, and 0.058 mm,respectively.
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Local Electrical Characterization of PVDF Textile Filament
Anthony Ferri,François Rault,Antonio Da Costa,Cédric Cochrane,Matthieu Boudriaux,Guillaume Lemort,Christine Campagne,Eric Devaux,Christian Courtois,Rachel Desfeux 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
The piezoelectric behavior of poly(vinylidene fluoride), PVDF, has been known for several decades and is clearlyrelated to its crystalline phases. Many works made on films or fibers have focused on the characterization of the phasetransitions during various PVDF processing and on its electromechanical activity by combining several techniques. Piezoforcemicroscopy (PFM) is an interesting tool to underline the crystalline forms and piezoelectricity efficiency of PVDF atthe local scale. However, this technique is little used on samples in the form of fibers and in this case, it is most oftennanofibers. In this work, two conventional PVDF textile filaments, with different weak draw ratio, are produced and analyzedby FTIR, XRD, and PFM. We demonstrate that the PFM analysis can be relevant for specimens presenting low signals duringother characterizations. Therefore, the local piezo-/ferroelectricity into the fiber is highlighted underlining the existence of thepolar phases of PVDF. Then, the effective piezoelectric coefficient d33 of PVDF fiber drawn with a ratio of 1.5 is estimated at12 pm/V.
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