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Dissertations / Theses on the topic 'Paper Surfaces'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

Yang, Hongta. "Fundamentals, preparation, and characterization of superhydrophobic wood fiber products." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24796.

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Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Yulin Deng; Committee Member: Jeffery S. Hsieh; Committee Member: Sujit Banerjee; Committee Member: Zhong Lin Wang.

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2

Garoff, Niklas. "The Friction between Paper Surfaces." Doctoral thesis, Stockholm, 2002. http://www.diva-portal.org/kth/theses/abstract.xsql?dbid=3415.

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3

Piltonen, P. (Petteri). "Prevention of fouling on paper machine surfaces." Doctoral thesis, Oulun yliopisto, 2013. http://urn.fi/urn:isbn:9789526202877.

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Abstract Fouling in papermaking causes major economic drawbacks due to downtime of process and paper quality defects. The surface fouling is a complex phenomenon in a paper making process, which is affected by several interconnected factors such as process environment changes from wet to dry with increasing temperature along with the variety of sticky materials present in paper raw materials. These impurities, such as waxes, coating binders, hot melts and pressure-sensitive adhesives have a tendency to attach to the surfaces of machinery during paper production and cause surface fouling. The f

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4

Zhao, Boxin Pelton Robert H. "The interactions of pressure sensitive adhesive with paper surfaces." *McMaster only, 2004.

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5

Li, Lester. "Structural considerations for superhydrophobic and superoleophobic surfaces." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52914.

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Highly fluid repellent have application in many industries ranging from marine to biomedical due to their self-cleaning antifouling properties. The development and implementation of these superhydrophobic (water contact angle >150 degrees ) and superoleophobic (oil contact angle > 150 degrees ) surfaces were studied in this thesis. We focused our studies on paper as a substrate for these superhydrophobic and superoleophobic surfaces. Cellulose based paper is a biodegradable, inexpensive material that is ideal for disposable use applications. Applying an oxygen plasma etching technique combined

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6

Aulin, Christian. "Preparation, characterisation and wetting of fluorinated cellulose surfaces." Licentiate thesis, Stockholm : Royal Institute of Technology. Department of Fibre and Polymer Technology, Division of Fibre Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4587.

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7

Öhlund, Thomas. "Coated Surfaces for Inkjet-Printed Conductors." Licentiate thesis, Mittuniversitetet, Institutionen för tillämpad naturvetenskap och design, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-16449.

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In this thesis, a number of commercially available paper substrates of various types are characterized and their characteristics related to the performance of inkjet-printed conductors using silver nanoparticle ink. The evaluated performance variables are electrical conductivity as well as the minimum achievable conductor width and the edge raggedness. It is shown that quick absorption of the ink carrier is beneficial for achieving well defined conductor geometry and high conductivity. Surface roughness with topography variations of sufficiently large amplitude and frequency is detrimental to

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8

Hansuebsai, A. "An investigation of the optical profile properties (smoothness) of paper substrates including the effects on smoothness of solvent penetratation and with particular reference to lithographic." Thesis, University of the Arts London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234271.

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9

Fivaz, Erika. "Evaluation of joint formation on cellulosic surfaces." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277912.

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Environmental issues are more and more present in our societies. Pollution engendered by plastic waste have drastically increased these past decades, causing several threats to the ecosystem. Therefore, the need of new biodegradable plastics to replace the actual petroleum-based ones is urgent. Cellulose could be a potential substitute since it is a biopolymer, abundant on Earth. However its properties have to be enhanced to be competitive towards actual plastics. The aim of the project is therefore to get a better understanding of cellulose-cellulose interactions. It focuses on the adhesion b

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10

Illergård, Josefin. "Development of New Bacteria-Reducing Surfaces." Licentiate thesis, KTH, Fibre and Polymer Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10586.

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<p>In recent years, antibacterial surfaces have been a subject of increased interest. Especiallyinteresting are non-leaching, contact-active surfaces that physically disrupts the bacterialcell using immobilised cationic polymers. Thus the risks of bacterial resistance and discharge of hazardous biocides is minimised. The assembly of such surfaces is elaborate andusually involves organic solvents. Here, polyelectrolyte multilayers (PEM) are proposed as an effective surface modification method, with an overall goal of producing antibacterial cellulose fibres. The PEM process is based on physical

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11

Preston, Janet Susan. "The influence of coating structure on the print gloss of coated paper surfaces." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393086.

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12

Ostrander, Colleen Francis. "Skin, Landscape, and the Mind: An Examination of Surfaces." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd_retro/77.

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My thesis researched memory and perception through an examination of surfaces. Acting as skin, boundary, veil, or terrain, the surfaces I created revealed imprints and residues that offered information used to clarify distorted perceptions. I attempted to locate evidence in parts of my body, and in physical matter, that contained a record of history. The work was often site specific, with the wall playing an intrinsic role in the construction of these pieces, made of paper, thread, and wax. Their surfaces referenced landscapes of the earth and of the body, a mental terrain shaped over time by

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13

Werner, Oskar. "Computer Modelling of the Influence of Surface Topography on Water Repellency and a Study on Hydrophobic Paper Surfaces with Partly Controlled Roughness." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2614.

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<p>A computer model based on minimization of the free energy, capable to predict contact angles and spreading transitions between Wenzel and Cassie mode for drops placed on surfaces with different topography were implemented in matlab. Simulations were compared with experiments documented in the literature. These showed that reported transitions between Cassie and Wenzel mode can be explained by minimization of the free energy. In this report, a study on the possibility of constructing water repellent paper surfaces with a combination of treatment with octadecyltrichlorosilane and topography c

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14

Gustafsson, Emil. "Tailoring adhesion and wetting properties of cellulose fibers and model surfaces." Licentiate thesis, KTH, Fiberteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91296.

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The layer-by-layer (LbL) technique was used to modify the surface of cellulose fibers by consecutive adsorption of poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) followed by a final adsorbed layer of anionic paraffin wax colloids. Paper hand sheets made from the modified fibers were found to be highly hydrophobic with a contact angle of 150°. In addition to the significantly increased hydrophobicity, the sheets showed improved mechanical properties, such as a higher tensile strength. Heat treatment of the prepared sheets further enhanced both the mechanical properties and th

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15

Gantenbein, Daniel. "Development of mineral particle surfaces for the adsorption of pitch from wood processing and recycling of paper." Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/1175.

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During the production of paper in paper mills, detrimental wood resin is released into the water circuit of the mill during the pulping process of the wood into fibres. This wood resin, termed pitch, can detrimentally deposit on the paper and on the paper machine equipment. The deposits mark the paper or can lead to a tear of the paper web involving a loss of output and a reduction in paper quality. Furthermore, the wood resinous compounds in paper mill effluents need to be reduced in order to minimise their toxic effects on water organisms. Talc has been the benchmark for many years as a mine

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16

Pao, Sheng-Ying (Sheng-Ying Aithne). "Beyond the boundaries of paper : a gesture-sensing pen for interfacing physical content with digitally-augmented surfaces." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98655.

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Thesis: Ph. D., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2015.<br>Page 188 blank. Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 159-165).<br>Humans are inherently creative and we have the desire to express and communicate. Pen and paper have been effective means of creation, expression, and communication for centuries. Today, technology increasingly permeates our environment but the spread of digital displays makes us more susceptible to passive viewership. What if we could combine the

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17

Kamal, Alm Hajer. "Interfacial Adhesion Failure : Impact on print-coating surface defects." Doctoral thesis, KTH, Fiber- och polymerteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194166.

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The aim of this work was to develop a solid knowledge on formulation effects controlling offset ink-paper coating adhesion and to identify key factors of the coating and printing process affecting it. Focus lay on comprehending the impact of pigment dispersant on ink-paper coating adhesion and ultimately on the print quality of offset prints. The work covers laboratory studies, a pilot coating trial designed to produce coated material with a span in surface chemistry and structure, and an industrial offset printing trial. The lab scale studies quantified ink-paper coating adhesion failure duri

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18

Fulleringer, Nicolas. "Contribution à l'étude des phénomènes de friction : application au matériau papier." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI071/document.

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L'optimisation de nombreux procédés technologiques requiert une compréhension approfondie des phénomènes de frottement des papiers. Nous avons donc cherché à mieux comprendre ces phénomènes pour tenter d'améliorer la séparation des enveloppes dans les machines à affranchir. Les méthodes normalisées de mesure du frottement papier-papier se sont tout d'abord avérées limitées en termes de répétabilité et de conditions expérimentales. Nous avons donc développé deux méthodes de mesure, l'une à faible et l'autre à haute vitesses. Nous avons aussi adapté la mesure du frottement aux différents contact

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19

Picollet, Martine. "Contribution à l'étude de l'imprimabilité des papiers LWC en héliogravure édition." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0038.

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Dans ce travail, nous etudions l'imprimabilite des papiers lwc en heliogravure edition. Les proprietes de surface, la permeabilite et les proprietes electriques des papiers vierges sont caracterisees a l'aide de diverses techniques de mesure. Une relation entre la structure de la couche et la permeabilite du papier couche est mise en evidence. D'autre part, la technique de la chromatographie inverse en phase gazeuse appliquee aux papiers couches permet de determiner de facon satisfaisante leur energie de surface. Les points manquants, les vaguelettes, la transvision et le rendu densitometrique

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20

Charoenpholphibool, Wandee. "The study of paper surface efficiency /." Online version of thesis, 1989. http://hdl.handle.net/1850/11467.

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21

Marrakchi, Zied. "Valorisation de la fibre d'Alfa." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENI075.

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Cette thèse s'inscrit dans le contexte de l'exploitation des matériaux bio-sourcés dans des applications à haute valeur ajoutée et vise à valoriser un produit de transformation d'une plante herbacée appelée Alfa ou « Stipa tenacissima », très abondante en Tunisie. L'idée principale de ce travail est d'étudier et d'exploiter les pâtes d'Alfa produites à l'échelle industrielle, dans l'objectif de rechercher de nouvelles voies de valorisation. L'application potentielle envisagée concerne l'utilisation des fibres d'Alfa comme éléments de renfort dans des bio-composites à base de matrices polymères

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22

Liu, Chung-Ni. "Laboratory investigation of the effect of the dampening solution on the loss of surface strength of coated paper /." Online version of thesis, 1993. http://hdl.handle.net/1850/11983.

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23

Sananpanichkul, Wanna. "Paper and printed paper surface characteristics studied using an optical method." Thesis, Open University, 1993. http://oro.open.ac.uk/54812/.

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A non-contact optical method for evaluating surface characteristics is reviewed. The optical reflectance instrument has been improved to be able to evaluate printed surfaces. Experiments were conducted with solid prints prepared on two types of papers printed with a heatset yellow ink. Both paper surfaces and printed surfaces are characterized into two regions: above the surface plane resulting in macrosmoothness (Sm) and below the surface plane resulting in microsmoothness (Su). For a better understanding of such optical print smoothness, a printed surface model is proposed based on Barkas' c

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24

Skedung, Lisa. "Tactile Perception : Role of Friction and Texture." Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103916.

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Tactile perception is considered an important contributor to the overall consumer experience of a product. However, what physical properties that create the specifics of tactile perception, are still not completely understood. This thesis has researched how many dimensions that are required to differentiate the surfaces perceptually, and then tried to explain these dimensions in terms of physical properties, by interconnecting human perception measurements with various physical measurements. The tactile perception was assessed by multidimensional scaling or magnitude estimation, in which metho

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25

Watts, John F. "Research papers." Thesis, University of Surrey, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361803.

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26

Åvitsland, Grete A. "Edgewise liquid penetration in paper : influence of surface chemistry and paper structure /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4082.

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27

Niembro, Martin Alejandro. "Conception et développement de supports imprimables souples pour filtrage et adaptation des ondes électromagnétiques radiofréquences." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT062.

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Les communications sans fil sont de plus en plus présentes dans notre quotidien, et avec elles, les ondes électromagnétiques qui leurs sont associées. Cela a créé un besoin de produits permettant de contrôler la portée du réseau, pour des raisons de sécurité de données, d'augmentation de débit en cas d'interférences avec d'autres réseaux, ou bien pour des raisons sanitaires. A l'inverse, dans d'autres cas, l'amélioration de la transmission de ces ondes est recherchée. Par exemple, dans les bâtiments de nouvelle construction ou rénovées, l'installation de vitrages à isolation renforcée permet d

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28

Soysouvanh, Davy. "Mesure optique de la topographie des papiers." Grenoble INPG, 2007. http://www.theses.fr/2007INPG0081.

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Plusieurs étapes dans le procédé de fabrication des papiers ont pour objectif d'améliorer l'état de la surface. La raison à cela est que certaines propriétés importantes, telles que le brillant ou la friction, dépendent énormément de la surface, de même que la qualité d'impression. Les méthodes traditionnelles pour caractériser les papiers sont basées sur des écoulements d'air à leur surface. Cependant, celles-ci se révèlent beaucoup trop limitées et ne permettent pas d'accéder à la topographie. Nous avons évaluées plusieurs méthodes optiques de mesure de micro-topographie et nous avons retenu

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29

Shirazi, Mehdi. "Surface application of yellowing inhibitors into paper." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38281.

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Papermakers are highly interested in upgrading mechanical paper by retarding or inhibiting the lignin color reversion. Yellowing can be prevented by screening UV light on the surface and adding yellowing inhibitors into papers. Surface treatment of paper in a size press by an inhibitor-starch mixture has more advantages compared to other methods. A novel microscopy technique using scanning electron microscopy is developed to identify and measure the polymer penetration into sized sheets.<br>The kinetics of starch adsorption on wood fibers was elucidated. An initial high adsorption of cationic

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30

Barros, Fabien de. "Conception, Réalisation et Caractérisation de papiers fonctionnels pour des applications de filtrage électromagnétique." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENT118/document.

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Le brouillard électromagnétique dans lequel nous vivons en permanence estaujourd’hui montré du doigt car, outre les risques sanitaires qu’il pourrait engendrer, illimite l’usage de certaines technologies. L’importance des interférences entre réseauxsans fil, ou la peur du piratage sur ces mêmes réseaux, en sont deux exemples. Cetravail de thèse vise à développer un nouveau moyen de protection contre certaines deces ondes électromagnétiques. Plus spécifiquement, ce travail se focalise sur unetechnologie capable de filtrer uniquement les ondes WiFi et GSM à travers de grandessurfaces d’une habit

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31

Fidjestøl, Svein. "Effective Quantification of the Paper Surface 3D Structure." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9208.

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<p>This thesis covers the topic of image processing in relation to the segmentation and analysis of pores protruding the surface in the three dimensional surface structure of paper. The successful analysis of pores is related to a greater goal of relating such an analysis to the perceived quality of the surface of a paper sample. The first part of the thesis gives an introduction to the context of image processing in relation to paper research. Also, an overview of the image processing framework used for image processing plugin development, ImageJ, is provided, together with the current statu

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32

Delgado, Ezequiel. "The potential of zwitterionic bonding in paper /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/5549.

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33

Missoum, Karim. "Modification chimique de surface de NanoFibrilles de Cellulose (NFC)." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-01072240.

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Les nanocelluloses connaissent un fort développement depuis ces dernières décennies et font l'objet de nombreuses études menées par les industriels et/ou consortiums académiques. Cette étude s'insère dans le cadre d'un projet européen (SUNPAP) visant à l'industrialisation des nanofibrilles de cellulose (NFC). La présente thèse fait l'état de nouveaux procédés de modification chimique de surface des NFC dans une optique de chimie verte. Plusieurs stratégies ont été développées telle que l'emploi de liquides ioniques comme solvant de réaction (décrit comme solvants verts) ou l'utilisation d'une

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34

Fike, Gregory Michael. "Determination of Polymer Film Development through Surface Characterization Studies." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6879.

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Unexpectedly, it was found that when a waterborne polyacrylate adhesive was placed on carbon steel it was not tacky; this was not the case for the same adhesive placed on stainless steel. It was determined that the surface energy, as measured with liquid contact angles, of the adhesive films is significantly different between the two films, with the non-tacky film having a higher surface energy. Atomic force microscopy (AFM) showed that the non-tacky surface has a higher roughness which minimizes the contacting area between the film and a contacting surface. Analysis of the heating of the car

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35

McMahon, Jeff. "Modelling coating on the surface of paper for quality assurance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0015/MQ48582.pdf.

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36

Li, Ruonan. "Surface properties and pore structure of superheated steam dried paper." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55414.

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Effects of superheated steam drying were determined for surface properties and pore structure of paper, properties which are important in the end use of paper. Two furnishes were investigated, thermomechanical pulp (TMP) and a TMP/kraft pulp blend. Drying of handsheets under matched conditions in air was used as the basis of comparison.<br>TMP paper dried in superheated steam has a slightly higher surface roughness, by about 0.5 $ mu$m at a roughness around 8 $ mu$m. This difference decreases with drying fluid temperature. It is also reduced by about half after a very light blade coating. Surf

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37

PEIXOTO, CLARISSA FERREIRA. "SURFACE CLEANING OF HISTORICAL PAPER DOCUMENTS USING ND: YAG LASER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=22327@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>A conservação e restauração de obras de arte e objetos de interesse histórico se afirma como ciência que agrega várias áreas do conhecimento. O processo de limpeza superficial se impõe como ponto fundamental e crítico em todas as intervenções, pois, tradicionalmente, envolve processos invasivos e de difícil controle. O método de limpeza a laser se coloca como solução viável, e amplamente difundida em intervenções realiz

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38

Lemaster, Richard L. "Development of an Optical Profilometer and the Related Advanced Signal Processing Methods for Monitoring Surface Quality of Wood Machining Applications." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-09282004-152158/.

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The research described here provides the technology and theory to quantify surface quality for a variety of wood and wood-based products. This technology provides a means of monitoring trends in surface quality which can be used to discriminate between Agood@ products and Abad@ products (the methods described in this research are not intended to provide ?grading? of individual workpieces) as well as provide information to the machine operator as to the source of poor quality machined surfaces. The analysis can be done either on-line at industrial speeds or off-line as a periodic quality contro

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Liu, Eunice. "Do plano à forma." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/16/16134/tde-16022017-103149/.

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Ensaios realizados em papel para investigação e conhecimento de tipologias de forma geradas a partir da bidimensionalidade, construídas por princípios de dobragem, corte e entrelaçamento. Realizado por método experimental criativo, os ensaios foram inspirados, reproduzidos e gerados a partir da observação de florescência e crescimento de plantas, de texturas e princípios têxteis, de cordas e linhas, elementos de padronagem, geometria e desenhos livres, desenvolvidos manualmente, sendo os cortes executados em máquina de corte a laser. A superfície ora é modificada, caracterizando um p

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40

Gay-Bellile, Vincent. "Contributions au recalage et à la reconstruction 3D de surfaces déformables." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2008. http://tel.archives-ouvertes.fr/tel-00731045.

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Cette thèse porte sur le développement d'outils permettant le recalage d'images d'une surface déformable et la reconstruction tridimensionnelle de surfaces déformables à partir d'images prises par une seule caméra. Les surfaces que nous souhaitons traiter sont typiquement un visage ou une feuille de papier. Ces problématiques sont mal posées lorsque seule l'information présente dans les images est exploitée. Des informations a priori sur les déformations physiquement admissibles de la surface observée doivent être définies. Elles diffèrent en fonction du problème étudié. Par exemple, pour une

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41

Jain, Ishan. "Paper-Based Sensors for Contaminant Detection Using Surface Enhanced Raman Spectroscopy." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/53946.

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Surface enhanced Raman spectroscopy (SERS) is highly promising analytical technique for trace detection of analytes. It is particularly well suited for environmental analyses due to its high sensitivity, specificity, ease of operation and rapidity. The detection and characterization of environmental contaminants, using SERS is highly related to the uniformity, activity and reproducibility of the SERS substrate. In this thesis, SERS substrates were produced by gold nanoparticle formation on wax patterned chromatography paper. In situ reduction of hydrogen tetrachloroaurate (gold precursor) b

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42

Mangin, Patrice J. "Etude de la destructuration de la surface du papier en zone d'impression offset." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0099.

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On propose un modele de destructuration de la surface du papier en zone d'impression. On implique le phenomene de decohesion d'une particule fibreuse par l'interaction entre les forces de tirant des encres et les forces de cisaillement. On decrit les formes des courbes de destructuration en fonction de la charge d'encre sur la plaque d'impression et on definit quatre zones de destructuration en fonction de l'importance relative des forces de decohesion. On explique les effets de la vitesse, de la pression d'impression, de la viscosite des encres, des proprietes de contexture et de la compositi

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43

Serles, Andrew. "An experimental study of the surface distribution of filler material in paper." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43379.

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A series of experiments were conducted to observe the effect of different pulp suspension and formation characteristics on the variation in filler concentration on the surface of paper. Hand sheet samples were formed in a laboratory apparatus. The surface distribution of two types of filler material was investigated: Precipitated Calcium Carbonate (CaCO₃) and Kaolin Clay (Al₂Si₂O₅(OH)₄). The effect of retention aids, dewatering rate, and forming fabric geometry on filler distribution was tested. The analysis was focused on the variation in surface filler concentrations on the scale of individ

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Mangiante, Gino. ""Green" and innovative chemical modifications of cellulose fibers." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0024.

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Ce projet de recherche mené en collaboration avec le CTP (Centre Technique du papier) a eu comme objectif de mettre en place une stratégie de greffage de polymères sur des fibres de cellulose via « Chimie Click » dans l’eau et dans des conditions douces et respectueuses de l’environnement afin de conférer de nouvelles propriétés mécaniques aux papiers résultants. La première étape a été d’élaborer une fonctionnalisation alcyne des fibres dans des conditions douces – dans l’eau ou dans un mélange eau/isopropanol – permettant à la fois une fonctionnalisation conséquente tout en préservant la cri

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Santos, Andrea de Sousa. "Le rôle des tensioactifs dans la flottation des encres offset lors du désencrage des fibres cellulosiques." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0041.

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Pour desencrer des vieux papiers, les papetiers utilisent actuellement des savons ou des tensioactifs pour mieux eliminer les particules d'encre a la flottation. Cependant, les mecanismes physico-chimiques responsables de la flottation ne sont pas encore tres bien compris. Ce travail de these met en evidence l'influence des differentes natures de tensioactifs sur le desencrage par flottation. Il a ete observe que le tensioactif utilise lors de la desintegration d'une composition de 100% journaux offset influence fortement la fragmentation et le decrochage de l'encre. Le niveau de fragmentation

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Jonhed, Anna. "Properties of modified starches and their use in the surface treatment of paper." Doctoral thesis, Karlstad University, Faculty of Technology and Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-735.

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<p>The papermaking industry uses a large amount of starch each year, both as a wet-end additive and as a rheological modifier in surface sizing and coating colors. It is important to be able to reduce the amount of chemicals used in the papermaking and surface treatment process, to reduce costs and to make the process even more efficient. Interest in new high-performance starches is great. By using these new types of starches, improved recycling of barrier products may be obtained as well as a reduction in the use of synthetic sizing agents. The objectives of this work were to understand the b

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Holmqvist, Johan. "Development of Free-Standing Interference Films for Paper and Packaging Applications." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11398.

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<p>The newfound capability of creating moisture sensitive interference multilayered thin films (MLTFs) comprising microfibrillated cellulose and polymers has not previously been possible to implement on surfaces other than silicon wafer strips. Being able to incorporate interference MLTFs on fibre-based materials would introduce the possibility for new applications within authentication, sensing and customer attraction for the paper and packaging industry. By using trichloro (1H, 1H, 2H, 2H-perfluorooctyl) silane we were able to hydrophobically modify silicon substrates, enabling interference

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Huang, Chengsi. "Identification and Validation of Protein Biomarkers for Invasive Aspergillosis; Development of Surface-Induced Dissociation Device and Paper Spray Ionization Source for Protein Complex Studies." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/347142.

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The research described in this dissertation is divided into two sections. The first section focuses on mass spectrometry-based bottom-up proteomics application to identify fungal protein biomarkers of invasive aspergillosis infection. The second part focuses on instrument development to improve current ionization and dissociation technologies for characterizing topology and substructure of protein complexes. Part I of this dissertation describes the identification and validation of protein biomarkers for Invasive Aspergillosis (IA), a fatal pulmonary infection. Aspergillus fumigatus, the organ

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Hoč, Miroslav. "Dynamic characterisation of fibre rising on a paper surface after dampening and drying /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-379.

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Ward, Jennifer Guerin. "Nitrocellulose Paper Based Microfluidic Platform Development and Surface Functionalization with Anti-IgE Aptamers." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/746.

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The purpose of this thesis project was to demonstrate the ability to utilize the capabilities of aptamers so that they may act as capture reagents for paper microfluidic devices. Several characterization experiments were conducted as a precursor before the final experimentation was performed. Paper characterization, manufacturing protocols for printing and heating, as well as 3D chip fabrication were all performed and analyzed. The results confirmed that the control of fluid through a 3D microfluidic device based in nitrocellulose is possible. For the biochemistry portion of this thesis rep

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