Dispersible cellulose

Blends of polyester with cotton (qv) or viscose are first dyed with disperse dyes, then with sulfur dyes (see Fibers, polyester Fibers, regenerated CELLULOSics). Disperse and sulfur dyes can also be appHed simultaneously in a pad—dry—thermofix/chemical reduction pad—steam sequence. In this case, the sulfur dyes cannot be used in thein reduced form because of the effect of the sodium sulfide on the disperse dye. Therefore, this method is confined to the solubilized sulfur dyes or sulfur dyes in the dispersed form. 

In a number of recent publications (1, 2) microcrystailine cellulose dispersions (MCC) have been used as models to study different aspects of the papermaking process, especially with regard to its stability. One of the central points in the well established DLVO theory of colloidal stability is the critical coagulation concentration (CCC). In practice, it represents the minimum salt concentration that causes rapid coagulation of a dispersion and is an intimate part of the theoretical framework of the DLVO theory (3). Kratohvil et al (A) have studied this aspect of the DLVO theory with MCC and given values for the CCC for many salts, cationic... 

Cisapride dispersion should be uniformity mixed or levigated. Avicel RC-591 and Methyl Cellulose dispersion should be uniform and smooth. 

The need for greater accuracy in determining the intrinsic viscosity, [ij], of cellulose dispersed in cuprammonium hydroxide solution led... 

Cellulose can replace some or all of the fat in dairy products, sauces, frozen desserts, and salad dressings. Finely ground microparticles of cellulose disperse throughout the food to provide a noncaloric network with the smoothness and... 

Carboxymethyl cellulose Usually prepared as the carboxylic salt of polycarboxymethyl ether of cellulose Dispersion of the free acid or its sodium salt is stable at a wide pH range (2-10) Thickening agent and tablet excipient... 

Lippold, B.H. Sutter, B.K. Lippold, B.C. Parameters controlling drug release from pellets coated with aqueous ethyl cellulose dispersions. Int. J. Pharm. 1989, 54, 15-25. 

Frohoff-Hulsmann, M.A. Schmitz, A. Lippold, B.C. Aqueous ethyl cellulose dispersions containing plasticizers of different water solubility and hydroxypropyl methyl-cellulose as coating material for diffusion pellets. I. Drug release rates from coated pellets. Int. J. Pharm. 1999, 177, 69-82. 

In contrast to aqueous-dissolved systems where the OH radical and the H atom are the main initiators, radical cations plus electrons and excited states are formed in the solid state. This is also the case with cellulose dispersed in water [101]. The radical cations are transformed by deprotonation [e.g. reactions (57) and (58)]. These suffer fragmentation such as reactions (20) - (23), as discussed above, or, for example, reaction (59). 

Indanthrene blue Pigment red 190 dye, vegetable-ivory buttons Direct black 38 dye, violet ABS Disperse violet 26 dye, violet cellulosics Disperse violet 26 dye, violet PC Disperse violet 26... 

CO-3-hydroxy valerate) (PHBV) and cellulose by extrusion blending, using a co-rotating twin screw extruder with a temperature profile ranging from 160 to 145 °C. PHBV pellets were dried, dry mixed with a cellulose nanowhisker powder and extruded. The extrudate was cooled in a water bath and the final pellets were dried. This material did not have the same mechanical properties and the same cellulose dispersion as the analogous composite prepared with solvent casting process. It was necessary to add a compatibilizer to improve the dispersion. 

The new technologies and greatest discoveries of science are often nothing but the study and reconstruction of what has always been before our eyes, in the most simple structures of nature. Even in the case of composite materials, nature has preceded thousands of years of our studies with materials such as wood, cellulose dispersed in lignin, or bones consisting of collagen and apatite. 

Cellulose dispersed in an acrolein solution (solvent water, ethanol, acetone, ether, or benzene) was treated with y-radiation of a Co source at 40 to 43 °C. In addition to the formation of a network of eellulose, homopolymerization of acrolein was observed. Homopolymerization of acrolein could be avoided if cellulose was treated with gaseous acrolein at a pressure of 10 torr before radiation [106]. 

Coconut husks Benzene/ethanol (1 2 v/v) and soxhlet-refluxed for 48 h, lignin removed with NaClO, at pH 4-5,70°C for 1 h, hemicellulose depolymerized with 6% (w/v) KOH for 24 h, extracted cellulose dispersed in deionized water for 20 min with 200 W ultrasonication Fahmaetal. (2010)... 

Rice husk Pre-treatment with hexane/ethanol/water in soxhlet, delignified with 5% (w/v) in autoclave at 121°C. The husk is oxidized with 2% (v/v) HjOj and 0.2% (v/v) (teraacetylethylenediamine) (TAED) for 12 h at 48°C. Cellulose further treated with 80% (v/v) acetic acid and 70% (v/v) HNO3 at 120°C for 30 min. and cellulose dispersed in deionized water by ultrasonic treatment. Rosa et al. (2012)... 

---