Search for dissertations about: "hemicellulose"

Showing result 1 - 5 of 147 swedish dissertations containing the word hemicellulose.

2. 1. Hemicellulose as barrier material

   Author : Hartman Jonas; Ann-Christine Albertsson; Gunnar Henriksson; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hemicellulose; galactoglucomannan; plasma surface treatment; vaporphase grafting; benzylation; contact angle; oxygen permeability; solution casting; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : Polysaccharides constitute an important source of raw materials for the packaging industry today. Polysaccharides have good natural barrier properties which are necessary for packaging films. Cellulose is the forerunner among renewable polymers for such applications. Hemicelluloses represent a new interesting breed of barrier materials. READ MORE

4. 2. Engineering and Functionalization of Hemicellulose Hydrogels

   Author : Weifeng Zhao; Karin Odelius; Ann-Christine Albertsson; Ulrica Edlund; Tina Vermonden; KTH; []
   Keywords : Hemicellulose; O-acetyl-galactoglucomannan; hydrogels; stimuli-responsive; aniline tetramer; aniline pentamer; electro-active; conductivity; pH-sensitivity; magnetic field-responsive; micro-gels; swelling; drug delivery.; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Hemicellulose is the second most abundant component in wood and is an important renewable resource  that is used in films, paper composites and biofuels.  Hemicelluloses  have  several  advantages,  including  their abundance,  degradability  and  renewability. READ MORE

5. 3. A biomimicking approach for hemicellulose processing

   Author : Petri Oinonen; Gunnar Henriksson; Edouard Pesquet; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical pulping; Hemicellulose; Cross-linking; Lignin-carbohydrate-complex; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Lignocellulose can become the best opportunity for the society to reduce its dependency on the harmful petroleum based products as well as to produce clean energy. In each part of the production cycle, biomass based products have a better environmental profiles than their petroleum based counterparts. READ MORE

6. 4. Chemical Pathways to Electrically Conductive Hemicellulose Hydrogels

   Author : Weifeng Zhao; Ann-Chiristine Albertsson; Ulrica Edlund; Karin Odelius; Elisabet Brännvall; Peter Plikk; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electrically conductive; hemicellulose; hydrogels; swelling behavior; aniline oligomers; renewable; polymer synthesis; Elektriskt ledande; hemicellulosa; hydrogel; svällning; anilinoligomerer; förnyelsebar; polymersyntes; Kemi; Chemistry;

   Abstract : Hydrogels have been extensively explored and are widely used in diverse biomedical applications, such as scaffolds for tissue engineering and vehicles for drug delivery. As one type of important natural polymer-based hydrogel, hemicellulose hydrogels have interesting attributes, including being renewable, non-toxic, biocompatible, biodegradable, and abundantly available. READ MORE

7. 5. Foaming of cellulose derivatives and hemicellulose-containing materials

   Author : Kristina Karlsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; β-glucan; arabinoxylan; scale-up production; hydroxypropyl methylcellulose HPMC ; ethyl hydroxyethyl cellulose EHEC ; hot-mould foaming; extensional viscosity; extrusion; hemicellulose; rheological characterisation; Foaming; xylan; cellulose derivatives;

   Abstract : Fossil-based polymeric foams are important materials due to their good mechanical properties relative their low density, the low price and the possibility for large-scale production. They are widely used in cushioning, absorbing and insulation applications. There are however a few disadvantages with these foamed products. READ MORE