Sökning: "Wettability"

Visar resultat 1 - 5 av 76 avhandlingar innehållade ordet Wettability.

1. 1. Wettability of modified wood

   Författare :Maziar Sedighi Moghaddam; Agne Swerin; M. Per Calessson; E.P. Magnus Wålinder; Callum Hill; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wood; dimensional stability; dynamic wettability; surface chemistry; microstructure; swelling; multicycle Wilhelmy plate method; contact angle; sorption; acetylation; furfurylation; surface modification; Kemi; Chemistry;

   Sammanfattning : Despite many excellent properties of wood which make it suitable for many applications, it suffers from a number of disadvantages limiting its use. For instance, modification is needed to reduce water sorption and to improve decay resistance, dimensional stability and weathering performance. LÄS MER

3. 2. Wettability and Agglomeration Characteristics of Non-Metallic Inclusions

   Författare :Changji Xuan; Pär Jönsson; Lauri Holappa; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wettability; non-metallic inclusion; agglomeration mechanism; attraction force; complex deoxidation; particle addition; Materials Science and Engineering; Teknisk materialvetenskap;

   Sammanfattning : In this thesis, both the wettability and the agglomeration characteristics of non-metallic inclusions in liquid iron/steel were studied by using both experimental results and thermodynamic considerations. The mechanisms of the wettability of different types of inclusions were discussed. LÄS MER

4. 3. Aspects on wettability and surface composition of modified wood

   Författare :Lars-Elof Bryne; Ove Söderström; Charles R. Frihart; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wettability; contact angle; work of adhesion; Lewis acid-base; modified wood; Building engineering; Byggnadsteknik;

   Sammanfattning : Wood is often combined with other materials such as thermoplastics, adhesives and coatings. In general, combinations of wood and polymers especially in outdoor exposure have poor long-term durability. LÄS MER

5. 4. On the Adhesion Between Substrates Covered with Polyelectrolyte Multilayers

   Författare :Rikard Lingström; Lars Wågberg; Lennart Piculell; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre; polyelectorlyte; multilayer; wettability; contact angle; paper strength; atomic force microscopy; surface force apparatus; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Sammanfattning : This thesis examines the formation of Polyelectrolyte Multilayers (PEM) on cellulose fibres as a new way of influencing the fibre surface and the adhesion between wood fibres. The aim of the study was to enhance the fundamental understanding of the adsorption mechanisms behind the formation of Polyelectrolyte Multilayers on cellulose fibres; to study how the properties of the layers can be influenced and to show how the properties of the layers influence the adhesion between the fibres and the strength of paper sheets made from the PEM treated fibres. LÄS MER

7. 5. Interactions between whole blood and TiO₂ surfaces with focus on adhesion and activation of PMN granulocytes

   Författare :Cecilia Eriksson; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; titanium; TiO2; surface roughness; oxide thickness; wettability; whole blood; inflammation; wound healing; platelets; PMN granulocytes; adhesion; activation; receptor expression; respiratory burst.;

   Sammanfattning : Foreign materials come in contact with the human body more and more frequently. The surgical procedure of inserting an implant into the body will cause bleeding, evoke an inflammatory response and initiate a healing process, ultimately leading to acceptance or rejection of the material. LÄS MER