Cellulose colloids

Shotton et al. [38] Van Kamp et al. [39] Sulfadiazine (D) Povidone (B) No filler Prednisone (D) Maize starch Na calcium alginate Alginic acid Microcrystalline cellulose Colloidal aluminum silicate Extra > intra Extragranular incorporation yielded fastest disintegration, but intragranular incorporation yielded finer particles. Equal distribution of disintegrants is recommended. 

Microcrystalline cellulose (MCC) is obtained by a controlled acid treatment intended to destroy the molecular bonding in the amorphous zones of cellulose. Usually HC1 or H2SO4 are used at 110°C for 15 min over native cellulose or regenerated cellulose. Colloidal gels are thus obtained showing thixotropy. MCC is used in the preparation of pharmaceutical compressed tablets due to its binding and disintegration properties. 

Chandramalar, A.V.M. et al.. Flow behaviour of titanium dioxide dispersions in the presence of 2-hydroxyethyl cellulose. Colloid Polym. Sci., TT, 485, 2000. 

Lochhead RY, Rulinson CJ. An investigation of the mechanism by which hydrophobically modified hydrophilic polymers act as primary emulsifiers for oil in water emulsions. 1. Poly(acrylic acids) and hydroxyethyl celluloses. Colloids Surfaces A Physicochem Eng Aspects 1994 88 27-32. 

Kastner, U., Hoffmann, H., Donges, R., Hilbig, J., 1997. Structure and solution properties of sodium carboxymethyl cellulose. Colloids Surf. A Physicochem. Eng. Asp. 123, 307—328. 

Araki, J., Wada, M., Kuga, S., Okano, T. Flow properties of microcrystalline cellulose suspension prepared by acid treatment of native cellulose. Colloids Surf. 142, 75-82 (1998)... 

Peng BL, Han X, Liu HL, Berry RC, Tam KC (2013) Interactions between surfactants and polymer-grafted nanocrystalline cellulose. Colloid Surf A Physicochem Eng Asp... 

CHE Chevillard, C. and Axelos, M.A.V., Phase separation of aqueous solution of metlyl-cellulose. Colloid Polym. Sci., 275, 537, 1997. 

Interest in the field of polymer chemistry became so intense that a High Polymer Forimi, similar to our present symposium system, was established. The wide range of interest in the polymer field was evidenced by the several divisions sponsoring the Forum Paint, Varnish and Plastics Physical, Inorganic Rubber Chemistry Cellulose Colloid Organic and Petroleum. From 19 6 to 19 9 1 2 papers were presented at 27 sessions of The High Polymer Forum. 

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