3 documents found, page 1 of 1
4th International Symposium on Bacterial Nanocellulose (ISBNC 2019) - Book of A...
Gama, F. M.; Dourado, Fernando; Freire, Carmen; Silvestre, Armando; Rodrigues, Ana Cristina Costa
Ecopolyol Production from Industrial Cork Powder via Acid Liquefaction Using Po...
Soares, Belinda; Gama, Nuno; Freire, Carmen; Barros-Timmons, Ana; Brandao, Ines; Silva, Rui; Pascoal Neto, Carlos; Ferreira, ArturEcopolyol production from acid liquefaction of cork powder was studied for the first time using PEG 400 and glycerol as liquefaction solvents in the presence of sulfuric acid at moderate temperature and atmospheric pressure. The effect of the temperature, concentration of catalyst, and time on the liquefaction yield has been investigated using a fixed set of reaction conditions namely, a liquefaction solvent mi...
Preparation of highly hydrophobic and lipophobic cellulose fibers by a straight...
Cunha, Ana Gisela; Freire, Carmen; Silvestre, Armando; Neto, Carlos Pascoal; Gandini, Alessandro; Belgacem, M. Naceur; Chaussy, DidierThis work describes a very simple, rapid, and efficient approach to the hydrophobization and lipophobization of cellulose fibers through their reaction with gaseous trichloromethylsilane (TCMS). The characterization of the modified surface involved FTIR-ATR and solid-state (29)Si NMR spectroscopy, scanning electron microscopy (SEM), and contact angle measurements with different liquids. The modification generat...