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An AFM study of local film formation of latex in paper coatings
YKI – Ytkemiska institutet.
2004 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 30, 105-111 p.Article in journal (Refereed)
Abstract [en]

The local film formation of latex in model paper coating suspensions of low latex to CaCO3 volume fraction ratio, 0.27, has been studied using both topographic and phase images of atomic force microscopy. Local film formation is believed to work concurrently with latex migration. Both the dosage and molecular weight of carboxymethylcellulose (CMC) have a visible effect on latex film formation. A greater dosage of CMC retards latex migration and a higher molecular weight of CMC prolongs the film-formation process. Another thickener, ethyl(hydmxyethyl)cellulose (EHEC), was compared to CMC, and EHEC creates a composite where deformed latex particles are encapsulated in EHEC. A higher Tg latex increases the amount of latex in the upper region of the coating. It is suggested that a lower Tg latex halts migration, which leads to film formation at an earlier stage, further down in an evaporating pore

Place, publisher, year, edition, pages
2004. Vol. 30, 105-111 p.
Keyword [en]
Microscopy, film, latex, coatings, calcium carbonate, carboxymethyl cellulose, ethyl cellulose
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26961OAI: oai:DiVA.org:ri-26961DiVA: diva2:1053964
Note
A1577Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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