Modification of microfibrillated cellulosic foams in a dielectric barrier discharge at atmospheric pressure. Issue 2 (19th October 2020)

• Record Type: Journal Article
• Authors: Meunier, Louis‐Félix; Profili, Jacopo; Babaei, Sara; Asadollahi, Siavash; Sarkissian, Andranik; Dorris, Annie; Beck, Stephanie; Naudé, Nicolas; Stafford, Luc
• Is Part Of: Plasma processes and polymers. Volume 18:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-10-19
• Subjects: cellulose -- dielectric barrier discharge -- hydrophobicity -- oleophilicity -- plasma deposition -- selective adsorption; Plasma polymerization -- Periodicals; Plasma-enhanced chemical vapor deposition -- Periodicals; Plasma chemistry -- Periodicals
• DOI: 10.1002/ppap.202000158
• Languages: English
• ISSNs: 1612-8850

Abstract

Abstract: This study explores the plasma‐induced modification of microfibrillated cellulose (MFC) foams in a plane‐to‐plane atmospheric‐pressure dielectric barrier discharge with helium and hexamethyldisiloxane as carrier and precursor gases, with and without a gas gap. When the foam took up all of the gas gap, filamentary discharges were generated and burn‐like damage was produced. This resulted in highly inhomogeneous deposits having both hydrophilic and hydrophobic domains. MFC foams taking up only a portion of the gas gap volume generated a homogeneous discharge and induced cellulose defibrillation. They generated effective hydrophobic surfaces on both the top and bottom of the foams. Oleophilicity measurements were also carried out, which support the possibility of an effective separation of oily wastewater using a green and renewable material. Abstract : The study explores the modification of microfibrillated cellulose foams in a plane‐to‐plane atmospheric‐pressure dielectric barrier discharge using hexamethyldisiloxane as a precursor for plasma deposition of organosilicon coatings. When the foam takes up only a portion of the gas gap, the homogeneous discharge produces effective hydrophobic surfaces on both the top and bottom of the foams. Oleophilicity measurements support the possibility of an effective separation of oily wastewater using a green and renewable material.