23-10-2010 | Gilberto Siqueira, Sandra Tapin-Lingua, Julien Bras, Denilson da Silva Perez, Alain Dufresne, Cellulose, 2010

In a previous work (Siqueira et al. 2010b) the preparation of cellulosic nanoparticles from sisal fibers using different processing routes, viz. a combination of mechanical shearing, acid and enzymatic hydrolysis was reported. It was shown that the pre-enzymatic hydrolysis treatment of ...

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20-10-2010 | Marco Litschauer, Marie-Alexandra Neouze, Emmerich Haimer, Ute Henniges, Antje Potthast, Thomas Rosenau, Falk Liebner, Cellulose, 2010

Abstract Shaped cellulosic aerogels—as the ‘young’ generation succeeding the well-established silica and synthetic polymer-based aerogels—are intriguing materials that feature properties similar to those of their antecessors combined with the additional advantages and characteristics of the ...

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20-10-2010 | Reda M. El-Shishtawy, Abdullah M. Asiri, Nayera A. M. Abdelwahed, Maha M. Al-Otaibi, Cellulose, 2010

An ecological and viable approach for the in situ forming silver nanoparticles (AgNPs) on cotton fabrics has been used. Silver nanocoated fabric of brownish yellow color (AgNPs, plasmon color) was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS) and ...

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16-10-2010 | Aya Tabara, Chihiro Yamane, Makoto Abe, Masaharu Seguchi, Cellulose, 2010

It was found that three kinds of the synthetic food additive dyes, red nr. 3 (erythrosine), nr. 104 (phloxine), and nr. 105 (rose bengal) were adsorbed to the surface of charred cellulose granules and the maximum amounts of adsorption of these dyes were 3.75, 3.42, and 4.74 mg/g cellulose, ...

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14-10-2010 | Cyril Chaudemanche, Patrick Navard, Cellulose, 2010

The swelling and dissolution mechanisms of dry, never-dried and re-wetted Lyocell fibers were investigated using mixtures of N-methylmorpholine N-oxide and water with various contents of water (from monohydrate to 24% w/w). A radial dissolution starting from the outer layers was observed. ...

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09-10-2010 | Ali Asghar Rastegari, Abdol-Khalegh Bordbar, Vajihe Mehnati-Najafabadi, Cellulose, 2010

The present study evaluates the binding of cetylpyridinium chloride (CPC) with cellulase in various experimental conditions using potentiometric, fluorescence spectroscopy and turbidimetric techniques. The analysis of binding curves revealed the existence of two sets of binding sets for CPC. ...

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09-10-2010 | Liliana C. Tomé, Lúcia Brandão, Adélio M. Mendes, Armando J. D. Silvestre, Carlos Pascoal Neto, Alessandro Gandini, ..., Cellulose, 2010

Modified bacterial cellulose membranes with tailored properties, regarding their surface and barrier properties were prepared by controlled heterogeneous esterification with hexanoyl chloride. The characterization of the esterified bacterial cellulose membranes was performed by FTIR ...

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07-10-2010 | Andreia Figueiredo, Dmitry Evtuguin, Jorge Saraiva, Cellulose, 2010

Bleached acid sulphite and kraft Eucalyptus globulus pulps were subjected to treatment at high hydrostatic pressure (400 MPa during 10 min). The associated structural changes of cellulose were evaluated by X-ray scattering, solid-state NMR and infrared spectroscopy. The high pressure ...

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06-10-2010 | S-Ja Tseng, Zhi-Hao Chen, Shiue-Cheng Tang, Cellulose, 2010

We investigated the use of heparinized cellulose matrices (H-CM) as affinity substrates for binding of basic fibroblast growth factor (bFGF), a heparin-binding peptide, to facilitate cellular proliferation and substrate-mediated transgene delivery. Using human HT-1080 fibroblasts and Saos-2 ...

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21-09-2010 | Ana Carolina Corrêa, Eliangela de Morais Teixeira, Luiz Antonio Pessan, Luiz Henrique Capparelli Mattoso, Cellulose, 2010

Curaua nanofibers extracted under different conditions were investigated. The raw fibers were mercerized with NaOH solutions; they were then submitted to acid hydrolysis using three different types of acids (H2SO4, a mixture of H2SO4/HCl and HCl). The fibers were analyzed by cellulose, lignin ...

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