Impact of Water in the Casting of Cellulosic Film from Ionic Liquid Solutions
Journal Title: Fibres and Textiles in Eastern Europe - Year 2015, Vol 23, Issue 4
Abstract
This study addresses in detail the role of water in the consecutive steps of film forming: cellulose dissolution, regeneration and drying, and its impact on the mechanical properties of the cellulose film. Prehydrolysis kraft (PHK) pulp was subjected to hydrothermal treatment (HT) prior to its dissolution in 1-ethyl-3-methylimidazolium acetate [emim]OAc. After the treatment, the DP of the pulp was 440 and the polydispersity index was as low as 3.1. HT pretreated pulp was dissolved in [emim]OAc with a water content of 2, 7, 14 and 21 wt%. The pulp dissolution was completed within 15 min regardless of the water content in the solvent. The rheological behavior, one of the key properties in film formation, was determined at varied temperature and cellulose concentration. Cellulose films were prepared from solutions with cellulose concentrations of 8, 12 and 16 wt% at a temperature of 90 °C. The impact of water on the macromolecular, morphological and mechanical properties of the transparent films prepared was thoroughly studied. With a very low polydispersity of the cellulose chain, the films prepared revealed high strength ranging from 87 to 106.5 MPa at elongation from 10 to 50% in conditioned state.
Authors and Affiliations
Dariusz Wawro, Włodzimierz Stęplewski, Witold Madaj, Anne Michud, Michael Hummel, Herbert Sixta
Keywords
Related Articles
- EP ID EP68995
- DOI -
- Views 82
- Downloads 0
Tensile, Flexual, Impact and Water Absorption Properties of Natural Fibre Reinforced Polyester Hybrid Composites
In this paper, tensile, flexural, impact properties and water absorption tests were carried out using sisal/unsaturated polyester composite material. Initially the optimum fibre length and weight percentage are estimated...
Sound Absorbing Polyester Recycled Nonwovens for the Automotive Industry
The subject of noise has received an increasing amount of attention from scientists, technologists and the public as a whole because a high noise level may determine the quality of human life. Therefore acoustic insulati...
Modeling of Ozonation of Reactive Black 5 Through a Kinetic Approach
C.I. Reactive Black 5 (RB5) is the most commonly used dye in the textile industry. Ozone is a strong oxidan that can decompose many barely degradable pollutants, including dyes. Although there are many literature reports...
Polypropylene Crystallisation in the Presence of Inorganic Additives
asas<br/><br/>
Cotton Matters. A Recognition and Comparison of the Cottonopolises in Central-Eastern Europe during the Industrial Revolution
The paper identifies the cities in Central-Eastern Europe which were often called Manchesters in the past, because of their similar path of development and the concentration on cotton production in the 19th century in th...