pedrofardim – Page 4 – Topochemical Engineering & Biofabrication

Surfaces of chitosan treated viscose fibres

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was employed to analyse cellulose viscose fibres treated with different chitosan-based solutions. The analysis reports several new features in the TOF-SIMS spectra for systems with various...

In Situ Hybridization of Pulp Fibers Using Mg-Al Layered Double Hydroxides

Inorganic Mg2+ and Al3+ containing layered double hydroxide (LDH) particles were synthesised in situ from aqueous solution onto chemical pulp fibers of pine (Pinus sylvestris). High super saturated (hss) solution with sodium...

Controlled depolimerization of cellulose via HyCellSolv

The degree of polymerization of cellulose is very relevant for physical and chemical properties of highly engineered biomaterials. The ability to control the level of depolymerisation to a final specific value opens...

Hydrotropic extraction of birch lignin

In this work an environmentally friendly hydrotropic process was used to extract lignin from industrial birch wood chips. Two hydrotropic treatments were performed, a conventional and a modified process. The lignins were...

Multi-technique surface characterization of bio-based films from sisal cellulose and its esters

Bio-based films were prepared from LiCl/DMAc solutions containing sisal cellulose esters (acetates, butyrates and hexanoates) with different degrees of substitution (DS 0.7–1.8) and solutions prepared with the cellulose esters and 20 wt%...

Supramolecular design of cellulose hydrogel beads

In the present study, we report the supramolecular design of cellulose-sulfonate hydrogel beads by blending water soluble sodium cellulose ethyl sulfonate (CES) with the pretreated cellulose in sodium hydroxide-ureawater solvent system at...

Enhanced enzymatic saccharification of corn stover via topochemical treatment

Hydrotropic pretreatment using sodium xylene sulfonate (SXS) could remove lignin and xylan from corn stover to enhance enzymatic saccharification. Peracetic acid (PAA) treatment prior to the hydrotropic process [so-called modified hydrotropic pretreatment...

Hybrid clay functionalized biofibres for composite applications

Micro-injection moulded composites of softwood fibres from two different pulping processes in thermoplastic polypropylene matrix have been studied. Surface modification of hydrogen peroxide bleached thermo mechanical pulp fibres (BTMP) from spruce (Picea...