A film-forming composition and a polymeric film or coating comprising hemicellulose, having a molecular weight of less than 50 000 g/mol, and at least one component selected from the group consisting of plasticizers, cellulose and a synthetic oligomer or polymer is disclosed. The use of said ...
Modeling the poroelasticity of the hydrogels in compression Analysis of the micromechanics of BC-H hydrogel deformation under compression must take into account the biphasic nature of the porous network with the water phase of the hydrogel and the hydrated polymer network, monitoring the dynamics of ...
The rise in global temperature and accumulation of petroleum-based wastes in the environment forces the scientific focus towards renewable alternatives. In the present work, an under-exploited resource – spruce bark – is investigated as a raw material for production of bio-oil as a liquid energy...
Hemicellulose is a complex branched heteropolymer composed of pentoses (β-d-xylose and α-l-arabinose), hexoses (β-d-mannose, β-d-glucose, and β-d-galactose), glucuronic acid, a small amount of l-rhamnose and l-fucose units, and the most abundant hemicellulosic polymers are xylans [...
- Cellulose: This is the main structural component of the plant cell wall, providing strength and rigidity. - Hemicellulose: This is a heteropolymer that works alongside cellulose to provide structural support and flexibility. - Pectin: This is a polysaccharide that helps in cell wall expansion an...
Defining the nature of the polymer from which monomers of the disintegrated sample originates can be very challeng- ing. These laborious, time consuming, and chemical reagent consuming methods also suffer from difficulties of up-scaling, automation, integration and widespread application in large-scale...
Recently, lignin has been used as a thermostat, reinforcement antioxidant, and compatibilizer for the preparation of polymer composites and blends [11–19]. Lignin is also considered a viable sustainable alternative to polyacrylonitrile as a carbon precursor [9,20–22]. Show abstract Functional ...
A PL aquagel-OH 50 column (300 × 7.7 mm, Polymer Laboratories Ltd. USA, 45 ? C) was used in the analysis. The eluent was 0.02 N NaCl in 0.005 M sodium phosphate buffer (pH = 7.5) with a ?ow rate of 0.5 mL min?1 . Hemicelluloses were dissolved in the eluent buffer at a ...
The key to producing commercially viable, low carbon footprint lignocellulosic fuels is to supplement cellulosic ethanol with hemicellulosic alcohols1,2,3. Hemicelluloses–the earth’s second most abundant natural polymer after cellulose–constitute 10–50% of the biomass4,5, interlinking the cellulose...
In a similar manner the hemicellulose constituents have been reduced to a linear xylose polymer, denoted by X, fast and slow, having arabinose (Ar) side chains (Fig. 1). Protons are represented by \({\mathrm{H}}^+\) and the hydroxyl groups by \({\mathrm{OH}}^-\); both of these...