ISSN:
0032-3888
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Polymers are often formulated into detergent products in order to confer properties which facilitate processing and/or storage of the product, or to yield desirable attributes for the end-user. Carbopol resin which consists essentially of polyacrylic acid, is one such polymer. Carbopol resin systems exhibit Bingham-Body-type rheology with measurable yield-value and pronounced shear-thinning at shear stresses above the yield value. These properties render Carbopol resins useful as a thickener and a suspending agent. Interaction with other components in a formulation, however, can radically alter the thickening and suspending properties of Carbopol resins. Phase diagrams of Carbopol resins with other major components of the system can guide the formulator away from areas where undesirable interactions, such as coacervate formation, can occur, and when presented in the form of contour diagrams they quantitatively map the physical properties of interest, enabling the formulator to be guided directly into the composition region which will best satisfy his requirements. The phase diagrams can also predict when different desirable properties cannot be simultaneously achieved and they can define the extent of compromise which may be necessary in formulation of the final product.
Additional Material:
17 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pen.760251711
