Towards a mechanism for surface hydrophobization of paper

Iselau, Frida,1979Chalmers tekniska högskola,Chalmers University of Technology (author)

Surface hydrophobization of paper, also referred to as surface sizing, is often needed for printing and packaging purposes. Typically, hydrophobic nanoparticles in combination with starch are applied on the paper surface. In this study two types of hydrophobic nanoparticle suspensions, one cationic and one anionic, were investigated in order to gain deeper knowledge about the mechanism behind surface sizing. A study was performed where the interactions between the particles and anionic starch were investigated and this study revealed that on addition of starch the cationic particles formed aggregates while the anionic particles were unaffected. This aggregation behaviour was found to be beneficial for the surface sizing performance. The impact of salt was also investigated and it was found that by increasing the ionic strength with NaCl or with Na 2 SO 4 larger agglomerates were formed. The surface hydrophobization efficiency of such aggregates was found to be lower, however.

Holmberg, Krister,1946Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kh (author)
Bordes, Romain,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bordes (author)
Chalmers tekniska högskola (creator_code:org_t)

In:Paper Conference and Trade Show, PaperCon 2017: Renew, Rethink, Redefine the Future1, s. 131-1399781510847286

By the author/editor: Iselau, Frida, 1 ...; Holmberg, Kriste ...; Bordes, Romain, ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Physical Chemist ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Paper Pulp and F ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Other Chemistry ...

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