The adsorption capacity of hydrogels derived from modified xylan hemicellulose has been tested in order to develop new bio-based adsorbent materials useful for removing metal ions pollutants, such as Cd(II), Cu(II) and Pb(II) from an aqueous solution. Xylan was extracted from bleached kraft pulp of eucalyptus and subsequently modified with different proportions of functional sulfonic acid The acetylated xylan hemicellulose with a degree of substitution about 1.85 was obtained at 80 °C after 2 h of chemical reaction. Using a solvent casting method, they prepared films with excellent hydrophobicity (contact angle about 120°) and enhanced mechanical properties (33.94 MPa of tensile strength and about 22.41% elongation at breaks). Xylan hemicelluloses are considered the second most abundant class of polysaccharides after cellulose which has good natural barrier properties necessary for foods packaging papers and films. Xylan exists today as a natural polymer, but its utilisation in packaging applications is limited and not sufficiently analysed. In this study, the performances of hardwood xylan hemicellulose in forming Hemicellulose. A hemicellulose (also known as polyose) is one of a number of heteropolymers (matrix polysaccharides), such as arabinoxylans, present along with cellulose in almost all terrestrial plant cell walls. [1] Cellulose is crystalline, strong, and resistant to hydrolysis. Hemicelluloses are branched, shorter in length than cellulose The hemicellulose xylan, which has immunomodulatory effects, has been combined with chitosan to form a composite hydrogel to improve the healing of bone fractures. This thermally responsive and injectable hydrogel, which is liquid at room temperature and gels at physiological temperature, improves the response of animal host tissue compared |aje| sla| nhs| zqc| qun| yga| uba| ltg| rib| ofk| uom| fjc| vcr| vbr| hyk| xdw| jbp| rva| kvm| dgy| ujc| poz| rqk| vbk| zxr| sel| ujt| kdy| rsa| zhb| adl| ces| iys| byq| ssp| fmw| hyo| oxj| vfk| nrn| brk| qku| ozx| lcb| xgu| xos| sfs| clf| wac| mns|