期刊
JOURNAL OF MATERIALS SCIENCE
卷 49, 期 7, 页码 2879-2893出版社
SPRINGER
DOI: 10.1007/s10853-013-7995-0
关键词
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This study presents a comparison of the mechanical and barrier properties of papers coated with microfibrillated cellulose (MFC) by two different coating processes: (i) bar coating and (ii) size press. Due to the high water content of MFC, water-treated papers were taken as references to highlight the effects of MFC on the properties of papers. Structural, mechanical and barrier properties of the ensued materials were performed respectively with SEM, tensile and stiffness testers, and air and oxygen permeability equipments. The properties of the water-treated papers were considerably damaged compared to those of the base paper that underlined the negative impact of both coating processes on the papers structure. With MFC, the air barrier and the bending stiffness were considerably improved (+90 and +50 % respectively), especially when the bar coating was used, i.e. with 7 g m(-2) of MFC. Size press was indeed not able to considerably improve papers properties as the MFC coat weight barely reached 4 g m(-2) resulting from ten successive MFC layers.
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