peptization Chem.
(pɛptaɪˈzeɪʃən)
[f. peptone + -ization.]
The transformation of a solid or semi-solid colloid into a fluid form by chemical means.
| 1864 T. Graham in Proc. R. Soc. XIII. 340 Liquid silicic acid may be represented as the ‘peptone’ of gelatinous silicic acid; and the liquefaction of the latter by a trace of alkali may be spoken of as the peptization of the jelly. 1916 E. F. Burton Physical Prop. Colloidal Solutions ii. 24 The large number of colloidal solutions prepared by the method known as peptization are examples of the resolution of a moist coagulum. 1934 Industr. & Engin. Chem. Nov. 1190/2 (heading) Peptization of lightly vulcanised rubber. 1948 A. Lane Greek Pott. i. 5 The coagulation can..be broken down by a process known as ‘peptization’, by the disintegrating action on the clay of certain chemicals. 1960 R. G. Haggar Conc. Encycl. Cont. Pott. & Porc. 210/2 Modern scholars have..demonstrated the understanding which they [sc. the Greeks] had of clay processes, of oxydising and reducing firing techniques, and what to-day are called ‘protective colloids’ and ‘peptization’. 1963 D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation vi. 135 The peptization of colloidal ferric hydroxide occurs at pH 6·6, under the influence of humus and colloidal silica which is present in the soil. 1972 Moeller & O'Connor Ions in Aqueous Syst. v. 113 Conversion of precipitate into a colloidal suspension is called ‘peptization’. |