Micro and nanofibrillated cellulose (MNFC) as additive in complex suspensions: influence on rheology and dewatering

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Gane, Patrick, Prof., Aalto University, Department of Forest Products Technology, Finland
dc.contributor.author Dimic-Misic, Katarina
dc.date.accessioned 2014-06-09T09:00:20Z
dc.date.available 2014-06-09T09:00:20Z
dc.date.issued 2014
dc.identifier.isbn 978-952-60-5697-5 (electronic)
dc.identifier.isbn 978-952-60-5696-8 (printed)
dc.identifier.issn 1799-4942 (electronic)
dc.identifier.issn 1799-4934 (printed)
dc.identifier.issn 1799-4934 (ISSN-L)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/13325
dc.description.abstract The traditional forest products, such as paper, packaging and viscose products, have their well-established place, but further efforts urgently need to be made to meet growing ecological demands, increasing economic pressure and to develop new technologies for utilisation of high performance materials. Nanocellulose applied in paper making suspensions and as water retention control aids may introduce additional strength properties in traditional products, and when considered for coatings may deliver oil and gas barrier properties as well as targeted liquid interactions based on surface energy criteria and designed pore and gel network structures. The properties increase the potential for their use in a broad range of novel products. The processes, firstly by which nanocellulose is both created, as part of cellulose structures in nature, and subsequently produced determine their aqueous suspension rheology and dewatering behaviour, and thus, by using knowledge of their rheological behaviour when utilised in complex suspensions, will support the creation of new controls in water-based production processes. The use of rheology for the characterisation of nanocellulose suspensions and their applications in a range of industries as diverse as the oil and papermaking industries has been the subject of numerous studies in recent years. Although many studies have been conducted relating to papermaking furnishes and their water suspensions while including nanocellulose containing materials, these rheological investigations were conducted independently from conditions of dynamic dewatering. For the first time, this work sets out to observe and try to overcome experimental difficulties related to rheometry and dynamic dewatering of high consistency viscoelastic gel-like nanocellulose suspensions using a variety of experimental techniques and methods. Once reliable rheological measurements were designed and the methodology established, the work goes on to analyse the possible structures attained by nanocellulose containing suspensions in combination with macroscopic fibres, pigments and fibril dispersing polymers, which traditionally are used as pigment flocculant water retention aids. These analyses are used to support and challenge the basic hypotheses of the thesis in relation to the impact these structures will have on properties such as process applicability, phase separation, substrate coverage, coating and material uniformity.   en
dc.format.extent 152 + app. 129
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Aalto University en
dc.publisher Aalto-yliopisto fi
dc.relation.ispartofseries Aalto University publication series DOCTORAL DISSERTATIONS en
dc.relation.ispartofseries 73/2014
dc.relation.haspart [Publication 1]: Katarina Dimic-Misic, Antti Puisto, Patrick Gane, Kaarlo Nieminen, Mikko Alava, Jouni Paltakari, Thaddeus Maloney (2013) The role of MFC/NFC swelling in the rheological behavior and dewatering of high consistency furnishes, Cellulose 6: 2847-2861. DOI 10.1007/s10570-013-0076-3
dc.relation.haspart [Publication 2]: Katarina Dimic-Misic, Antti Puisto, Jouni Paltakari, Mikko Alava, Thaddeus Maloney (2013) The influence of shear on the dewatering of high consistency nanofibrillated cellulose furnishes, Cellulose 20:1853-2020. DOI 10.1007/s10570-013-9964-9
dc.relation.haspart [Publication 3]: Katarina Dimic-Misic, Patrick Gane, Jouni Paltakari (2013): Micro and nanofibrillated cellulose as rheology modifier additive in CMC-containing pigment coating formulations, Industrial and Engineering Chemistry Research 52: 16055-16083. DOI: 10.1021/ie4028878
dc.relation.haspart [Publication 4]: Katarina Dimic-Misic, Tuomo Salo, Jouni Paltakari, Patrick Gane (2014) Comparing the Rheological Properties of Novel Nanofibrillar Cellulose-formulated Pigment Coating Colours with those using Traditional Thickener, Nordic Pulp and Paper Journal 29: 253-270
dc.relation.haspart [Publication 5]: Katarina Dimic-Misic, Cathy Ridgway, Thaddeus Maloney, Jouni Paltakari, Patrick Gane (2014) Influence on pore structure of micro/nanofibrillar cellulose in pigmented coating formulations, Transport in Porous Media. Volume 103, Issue 2, pp 155-179. DOI: 10.1007/s11242-014-0293-8
dc.relation.haspart [Publication 6]: Mikael Mohtaschemi, Katarina Dimic-Misic, Antti Puisto, Marko Korhonen, Thaddeus Maloney, Jouni Paltakari, Mikko Alava (2014) Rheological characterisation of fibrillated cellulose suspensions via bucket vane viscometer, Cellulose. Volume 21, Issue 3, pp 1305-1312. DOI: 10.1007/s10570-014-0235-1
dc.subject.other Paper technology en
dc.title Micro and nanofibrillated cellulose (MNFC) as additive in complex suspensions: influence on rheology and dewatering en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Kemian tekniikan korkeakoulu fi
dc.contributor.school School of Chemical Technology en
dc.contributor.department Puunjalostustekniikan laitos fi
dc.contributor.department Department of Forest Products Technology en
dc.subject.keyword rheology en
dc.subject.keyword nanocellulose en
dc.subject.keyword coating en
dc.subject.keyword dewatering en
dc.subject.keyword immobilisation en
dc.identifier.urn URN:ISBN:978-952-60-5697-5
dc.type.dcmitype text en
dc.type.ontasot Doctoral dissertation (article-based) en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.contributor.supervisor Paltakari, Jouni, Prof., Aalto University, Department of Forest Products Technology, Finland
dc.opn Söderberg, Daniel, Prof., KTH Royal Institute of Technology, Stockholm, Sweden
dc.contributor.lab Natural Fiber Products en
dc.rev Djonlagic, Jasna, Prof., Faculty of Technology and Metallurgy, University of Belgrade, Serbia
dc.rev Kataja, Markku, Prof., Department of Physics, University of Jyvaskylä, Finland
dc.date.defence 2014-06-12


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