4 documents found, page 1 of 1
Biopolymers Derived from Forest Biomass for the Sustainable Textile Industry
Dias, J. C.; Marques, Susana; Branco, Pedro C.; Rodrigues, Thomas; Torres, Cristiana A.V.; Freitas, Filomena; Evtuguin, Dmitry; Silva, CarlaABSTRACT: In line with environmental awareness movements and social concerns, the textile industry is prioritizing sustainability in its strategic planning, product decisions, and brand initiatives. The use of non-biodegradable materials, obtained from non-renewable sources, contributes heavily to environmental pollution throughout the textile production chain. As sustainable alternatives, considerable efforts ...
Polyhydroxyalkanoate Production from Eucalyptus Bark's Enzymatic Hydrolysate
Rodrigues, Thomas; Torres, Cristiana A. V.; Marques, Susana; Gírio, Francisco; Freitas, Filomena; Reis, Maria A.ABSTRACT: In recent years, polyhydroxyalkanoates (PHAs) have gained notoriety because of their desirable properties that include proven biodegradability, biocompatibility, and thermal stability, which make them suitable alternatives to fossil-based polymers. However, the widespread use of PHAs is still challenging because of their production costs, which are greatly associated with the cultivation medium used f...
Chitin-Glucan complex hydrogels: physical-chemical characterization, stability,...
Araújo, Diana; Rodrigues, Thomas; Roma-Rodrigues, Catarina; Alves, Vitor D.; Fernandes, Alexandra R.; Freitas, FilomenaChitin-glucan complex (CGC) hydrogels were fabricated by coagulation of the biopolymer from an aqueous alkaline solution, and their morphology, swelling behavior, mechanical, rheological, and biological properties were studied. In addition, their in vitro drug loading/release ability and permeation through mimic-skin artificial membranes (Strat-M) were assessed. The CGC hydrogels prepared from 4 and 6 wt% CGC s...
Chitin-Glucan Complex Hydrogels: Optimization of Gel Formation and Demonstratio...
Araújo, Diana; Rodrigues, Thomas; Delgado Alves, Vitor; Freitas, FilomenaChitin-glucan complex (CGC) hydrogels were fabricated through a freeze–thaw procedure for biopolymer dissolution in NaOH 5 mol/L, followed by a dialysis step to promote gelation. Compared to a previously reported methodology that included four freeze–thaw cycles, reducing the number of cycles to one had no significant impact on the hydrogels’ formation, as well as reducing the total freezing time from 48 to 18 ...