Third Training School

Jena (DE), April 7-9, 2015

Pretreatment and dissolution of cellulose

The Training School was hosted by the Friedrich Schiller University Jena (Germany). The aim of this event was to introduce already existing and technically applied methods for the dissolution and shaping of cellulose as well as new methods to increase the solubility of the biopolymer. It was the intention by the organisers to combine both technically applied methods and recently developed new technologies. 

The seminar was divided into 5 subtopics, namely

  • ionic liquids as cellulose solvents
  • treatment of cellulose prior dissolution
  • practical aspects of cellulose dissolution
  • new processes for cellulose dissolution
  • aqueous hydroxides as cellulose solvents

In addition to training sessions delivered by well-known experts in their field, participants had been invited to present their own research as poster or short oral contribution.

A highlight of this training school was the visit of the Thuringian Institute for Textiles- and Plastics Research (TiTK) in Rudolstadt (Germany). Here, different methods for the characterisation of spinning dopes, lab- and pilot-scale fibre spinning as well as electrospinning were demonstrated.

All in all 40 participants from 12 countries joined the training school.

Download agenda (PDF)

Presentations day 1:

  • Welcome and introduction (Download PDF)
    Thomas Heinze (FSU, Germany)
  • Welcome and introduction (Download PDF)
    Åsa Östlund (SP, Sweden)

Training theme 1: Ionic liquids as cellulose solvents.

  • Cellulose Dissolution and Shaping in Ionic Liquids (Download PDF)
    Michael Hummel (Aalto University, Finland)

Perspectives on theme 1:

  • Investigations into the Coagulation of Cellulose from EmimAc-DMSO Solutions in Common Protic Solvents (Download PDF)
    A. Hedlund, T. Köhnke, H. Theliander
  • Solvent/Substrate Behavior Between Pulp Fibers and 1-Butyl-3-methylimidazolium Hydrogen Sulfate (Download PDF)
    J. Mao, L. Barcellos Pereira, H. Winter, R. Thire, M.-P. Laborie
  • Synthesis of Highly Functionalized Cellulose Carbonates in 1-Butyl-3-methylimidalzolium Chloride/Pyridine (Download PDF)
    T. Elschner, T. Heinze
  • Ionic Liquid as Dispersion/Dissolution Solvent for Cellulose Nanocrystals (Download PDF)
    Y. Cao, Y. Nevo, O. Shoseyov
  • Molecular Deformation in High Performance Cellulose Fibers – Influence of Draw Ratio (Download PDF)
    N. D. Wanasekara, S. J. Eichhorn, S. Rahetekar, T. Welton, A. Bismarck, H. Sixta, K. Potter

Presentations day 2:

Training theme 2: Treatment of cellulose prior to dissolution

  • Enzymatic Treatments for Improving Cellulose Dissolution (Endoglucanase and Pectinase) (Download PDF)
    Patrick Navard (MINES Paris Tech)

Perspectives on theme 2:

  • Carboxymethylation as Pretreatment of Nanofibrillated Cellulose (Download PDF)
    O. Ç. Kurtuluş, S. Ondaral, G. Hocaoglu
  • Influence of Pretreatment Method of Cellulose on the Molar Mass Distribution (Download PDF)
    M. Drożdżek, A. Antczak, J. Gawron
  • Ethanol-HCl Pretreatment for Cellulose Dissolution in NaOH-Urea-Water (Download PDF)
    P. Trivedi, J. Trygg, P. Fardim

Training theme 3: New processes for cellulose dissolution

  • Cellulose Carbamate (Download PDF)
    André Lehmann (IAP Potsdam-Golm, D)

Training theme 4: Practical aspects on dissulotion of cellulose

  • Preparation and Characterization of Cellulose Dopes in NMMO (Download PDF)
    F. Meister (TITK Rudolstadt, D)

Presentations day 3

Training theme 3 continued

  • BioCelSol (Download PDF)
    Danuta Ciechanska (IBWCh Lodz, PL)

Perspectives on theme 3 continued:

  • Recent Developments in Solvents of Cellulose (Download PDF)
    T. Heinze
  • Common Organic Liquids as Simple Cellulose Solvents (Download PDF)
    M. Kostag, T. Liebert, T. Heinze
  • Ionic Liquid/Co-Solvent Mixtures – Tailored Reaction Media for Chemical Derivatization of Cellulose (Download PDF)
    M. Gericke
  • Application and Modification of Nanofibrillated Cellulose (Download PDF)
    G. Hocaoğlu, S. Ondaral
  • Unusual Extraction and Characterization of Nanocrystalline Cellulose from Cellulose Derivatives (Download PDF)
    L. Alves, P. Araújo, A. Romano, B. Lindman

Training theme 5: Aqueous hydroxides as cellulose solvents

  • Hydrodynamic Properties, Viscosity and Gelation of Cellulose in NaOH-based Solvents (Download PDF)
    Tatiana Budtova (MINES Paris Tech, FR)

Perspectives on theme 5:

  • Potassium Carbonate Catalysed Transesterification of Cellulose in DMSO/TBAF (Download PDF)
    E. Erisir, E. Gumuskaya, A. D. Celik
  • On the Role of Hydrophobic Interactions in Cellulose Dissolution and Regeneration: Colloidal Aggregates and Molecular Solutions (Download PDF)
    B. Medronho, H. Duarte, L. Alves, A. Romano, B. Lindman