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Heat of swelling

Quellungs-koUoid, n. swelling colloid, -ver-mogen, n. swelling power, -warme, /. heat of swelling, heat of tumefaction, -zustand,... [Pg.354]

Heat of Swelling is the heat evolved when a. colloid (eg gelatin, NC) absorbs a liquid (such as h2o, acetone etc)... [Pg.59]

Sorption and swelling are accompanied by the evolution of heat (Katz [33]). Water sorption causes the evolution of some 3.5-6.0 kcal/mole. The heat of swelling in the presence of sodium hydroxide depends on its concentration. When a 5-18% sodium hydroxide solution is used, the heat of swelling amounts to 13-30 cal/g of cellulose. [Pg.226]

Additional data on the character of these structural changes were obtained from an investigation of the sorption of iodine by preparations of mixed polysaccharide (IIIX and the determination of the heats of swelling in water (Table 8) (26). [Pg.101]

Table 8. Sorption of iodine and heats of swelling of cellulose and mixed polysaccharide (III) in water... Table 8. Sorption of iodine and heats of swelling of cellulose and mixed polysaccharide (III) in water...
Type of polysaccharide Amount of altrose units (mol.-%) Amount of sorbed iodine (m g) Heat of swelling in water (kcal/mole)... [Pg.101]

Fig. 10 Effect of sodium chloride on the maximum heats of swelling and the maximum heats of dehyration of sodium polyacrylate deswelling obtained by calorimetry at 25°C. Fig. 10 Effect of sodium chloride on the maximum heats of swelling and the maximum heats of dehyration of sodium polyacrylate deswelling obtained by calorimetry at 25°C.
To see the effect of sodium chloride on the rate of swelling, the ratios of rate constants of the swelling with water, ko, to that with c, k, were plotted against c in Fig. 16. As shown in Fig. 16, at the lower c, the ratios of the rate constants are almost the same by microscopic observation as by calorimetric measurement, but above 0.3molL the ratios are very different. As shown in Fig. 10, the heat of swelling does not depend on c. [Pg.377]

AKH Akhmedov, K.S., Heats of swelling and solution of polyethylene, poly(vinyl chloride), perchlorovinyl resin, and polystyrene in 1,2-dichloroethane or toluene (Russ.), Uzb. Khim. Zh., ), 19, 1958. [Pg.345]

AKH Akhmedov, K.S. and Lipatov, S.M., The heats of swelling and of solution of polymers in relation to molecular weights and temperatures (Russ.), Kolloidn. Zh., 19,257,1957. [Pg.511]


See other pages where Heat of swelling is mentioned: [Pg.447]    [Pg.277]    [Pg.279]    [Pg.238]    [Pg.492]    [Pg.86]    [Pg.378]    [Pg.345]    [Pg.27]   
See also in sourсe #XX -- [ Pg.7 , Pg.59 ]




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