Selaus syöttöajan mukaan kokoelmasssa 2 Tekniikka

    • Valuable monomers and oligomers from hemicelluloses 

      Pérez Nebreda, Andrea
      Acta technologiae chemicae Aboensia : 2019 A/1 (Åbo Akademi - Åbo Akademi University, 03.05.2019)
      Current environmental problems such as global warming and climate change related to greenhouse gas emissions have enhanced industrially relevant research aimed towards a more sustainable future. The biorefinery concept ...
    • Supramolecular design of cellulose-based hydrogel beads 

      Trivedi, Poonam (Åbo Akademi - Åbo Akademi University, 08.03.2019)
      The degree of polymerization (DP) of cellulose fibres is an important factor to consider during dissolution in water-based solvent system and to design further advanced biomaterials. The lower is the DP, the higher cellulose ...
    • Aqueous-Phase Reforming of Renewable Polyols for Sustainable Hydrogen Production 

      Godina, Lidia I. (Åbo Akademi - Åbo Akademi University, 22.02.2019)
      Renewable biomass can be utilized for sustainable hydrogen production via aqueousphase reforming (APR), which implies catalytic conversion of aqueous solutions of alcohols and polyols over transition metals at comparably ...
    • Three-dimensional printing of wood-derived biopolymers towards biomedical applications 

      XU, Wenyang (Åbo Akademi - Åbo Akademi University, 22.02.2019)
      Three-dimensional (3D) printing has shown promising potential in fabrication of complex tissue with a structural control from micro- to macro-scale, meeting the requirements of tissue engineering. Wood-derived biopolymers ...
    • Polyhedral Outer Approximations in Convex Mixed-Integer Nonlinear Programming 

      Kronqvist, Jan
      Dissertations (Process Design and Systems Engineering. Online) (Åbo Akademi - Åbo Akademi University, 31.08.2018)
      This thesis is focused on a specific type of optimization problems commonly referred to as convex MINLP problems. The goal has been to investigate and develop efficient methods for solving such optimization problems. The ...
    • Catalytic transformation of algae, tall-oil fatty acids and triglycerides to renewable fuels and chemicals 

      Hachemi, Imane (Åbo Akademi - Åbo Akademi University, 18.06.2018)
      It has become increasingly obvious that sustainable energy is becoming more engaging owing to the eventual depletion of the world reserves of fossil resources of energy and to the increase of the greenhouse gas emissions. ...
    • Quantitative Monitoring of Aerobic and Anaerobic Bioprocesses using Vibrational Spectroscopy 

      Dahlbacka, John
      Dissertations published by Process Design and Systems Engineering (Åbo Akademi - Åbo Akademi University, 09.03.2018)
      In bioprocesses, living cells are used to produce biological materials of interest. Perhaps the most well‐known product produced in bioprocesses is penicillin. Implementing process analytical technologies (PAT) in bioprocesses ...
    • Wood extractives in conifers : a study of stemwood and knots of industrially important species 

      Nisula, Linda (Åbo Akademis förlag - Åbo Akademi University Press, 23.02.2018)
      Throughout the years, extractives have been studied with various analytical methods, and it has been found that different tree species contain different types and amounts of extractive compounds. However, many studies have ...
    • Roll-to-roll processing of nanocellulose into coatings 

      Kumar, Vinay (Åbo Akademi - Åbo Akademi University, 15.02.2018)
      Paper and paperboard consumption is growing worldwide. However, the demand for traditional graphic paper grades is dwindling in mature markets, e.g. Europe, due to an increasing influence of the electronic media. For a ...
    • Hydrotropic process for green biorefinery applications 

      Gabov, Konstantin (Åbo Akademi - Åbo Akademi University, 19.01.2018)
      Biorefinery is a concept of sustainable biomass processing into several useful products, such as fuels, materials, power and chemicals. The necessity of more extensive biomass utilization is governed nowadays by the ...
    • Functionalization of cellulosic fibers via adsorption of native and light-responsive polysaccharides 

      Gabova, Olga (Åbo Akademi - Åbo Akademi University, 17.01.2018)
      Pulp fibers are widely used in different types of everyday products. Even though the demand for newspaper and printing paper is declining, there is a clear growth in the consumption of such fiber-based products as specialty ...
    • Printed and Coated Functionality on Natural Fibre Based Substrates 

      Valtakari, Dimitar (Åbo Akademi - Åbo Akademi University, 12.01.2018)
      Mass-produced, paper-based printed electronics can provide a solution for the manufacturing of flexible and disposable electronic applications of the future. Traditional recyclable, high throughput, and low-cost roll-to-roll ...
    • Engineering of novel cellulose-based biocomposites and biofoams 

      Obradovic, Jasmina (Åbo Akademi - Åbo Akademi University, 15.12.2017)
      Biomass is a renewable feedstock for producing fine chemicals, polymers, energy, and a variety of commodities. Transformation of biomass into diverse valuable products is the key concept of a bioeconomy. Chemical and ...
    • Fibre surface engineering using polysaccharide derivatives 

      Vega, Beatriz (Åbo Akademi - Åbo Akademi University, 12.12.2017)
      In the search for new materials and innovative solutions, pulp fibres obtained from wood chips have gained attention during the last few decades because they can be converted into a wide variety of pulp-derived products. ...
    • Fractionation of marine algae to its constituents towards valuable chemicals and energy products 

      Pezoa Conte, Ricardo Miguel (Åbo Akademi - Åbo Akademi University, 20.11.2017)
      There is an urgency for finding renewable resources for the replacement of fossil resources aiming at more environmentally friendly processing. The old concept of processing forestry biomass for pulp and paper that dominated ...
    • Flexible pigment-cellulose nanofibril composites for printed electronics applications 

      Torvinen, Katariina (VTT Technical Research Centre of Finland Ltd, 27.10.2017)
      The aim of this work was to expand the possibilities of novel use of cellulose micro- and nanofibrils (CMNF) for bio-based composites. The new approach in this work was to combine inorganic pigments and CMNF in a relatively ...
    • Reactor Modelling for Fluid-Solid Systems 

      Russo, Vincenzo (Åbo Akademi - Åbo Akademi University, 13.10.2017)
      Reactor Modelling for Fluid-Solid Systems The aim of the present doctoral thesis is the development of reliable mathematical models for the simulation of fluid-solid reactors. The main idea was to elaborate a rigorous ...
    • Hybridization of pulp fibres with LDH for applications in composites and lightweight fibrous foam 

      Lange, Carl (Åbo Akademi - Åbo Akademi University, 11.08.2017)
      The research around the pulp and paper (P&P) sector has changed dramatically during the past 15 years. P&P industry is particularly keen to find new solutions for the raw-materials they provide as well as explore novel ...
    • Synthesis, characterization and application of polypyrrole/zeolite composites 

      Yu, Kai (Åbo Akademi - Åbo Akademi University, 02.06.2017)
      Hybrid materials consisting of microporous aluminosilicate zeolites and the conducting polymer polypyrrole (PPy) were synthesized and characterized. The PPy/zeolite composites exhibit both the mechanical and chemical ...
    • Design and evaluation of nanoparticle-based delivery systems : towards cancer theranostics 

      von Haartman, Eva (Åbo Akademi - Åbo Akademi University, 21.04.2017)
      The design, characterization and applicability of nanoparticle (NP)-based delivery systems intended for cancer theranostics, are presented in this thesis. Mesoporous silica nanoparticles (MSNs) have been widely established ...