Download e-book for iPad: An Introduction to Surfactants by Tharwat F. Tadros

By Tharwat F. Tadros

ISBN-10: 3110312123

ISBN-13: 9783110312126

Surfactants are floor energetic brokers, molecules that experience an important function in emulsions, suspensions, and foams. They locate common program in own care, cosmetics, prescribed drugs, agrochemicals and the foodstuff undefined. Their class, actual homes, part habit, their results and purposes are coated during this e-book.

Show description

Read or Download An Introduction to Surfactants PDF

Similar industrial & technical books

Download e-book for iPad: Practical Guide to Microbial Polyhydroxyalkanoates by Kumar Sudesh, Dr. Hideki Abe

Polyhydroxyalkanoates (PHA) are plastic-like polymers produced obviously by means of many sorts of micro organism. PHA are one of the so much promising subsequent iteration plastics simply because they're biodegradable and will be produced utilizing renewable assets. the sensible advisor to Microbial Polyhroxyalkanoates offers specific info at the numerous microbial facets that govern the layout and synthesis of commercially invaluable PHA.

Functional Dyes - download pdf or read online

Within the final 10 years natural dyes, usually used for coloring textiles and different fabrics, became more and more very important within the hi-tech industries of electronics and optoelectronics. they are often utilized in optical information garage, new sunlight cells and biomedical sensors. sensible Dyes discusses the synthesis of those new, high-value dyes and pigments in addition to their functions and function.

Download e-book for kindle: Gums and Stabilisers for the Food Industry The Changing Face by Peter A Williams, Glyn O Phillips

The e-book describes the hot advances within the technology and expertise of hydrocolloids that are utilized in foodstuff and similar structures. the point of interest is at the technofunctionality and the biofunctionality of hydrocolloids, giving a suitable emphasis to the manipulative abilities of the nutrition scientist and recognising the particular half hydrocolloids can play in aiding human health and wellbeing.

New PDF release: Directed evolution of selective enzymes: catalysts for

Authored through one of many world's best natural chemists, this authoritative reference offers an outline of uncomplicated recommendations in directed evolution and introduces universal gene mutagenesis, screening and choice tools. during the textual content, emphasis is put on method improvement to maximise potency, reliability and pace of the experiments and to supply directions for effective protein engineering.

Extra resources for An Introduction to Surfactants

Sample text

When the ratio of cmcs is far from 1. This fact is used when preparing microemulsions where the addition of medium chain alcohol (like pentanol or hexanol) changes the properties considerably. e. e. at the cmc of the systems the micelles are up to 50 % composed of component 2. g. dodecyl alcohol in sodium dodecyl sulfate (SDS). Fig. 9 shows the cmc as a function of molar composition of the solution and in the micelles for a mixture of SDS and nonylphenol with 10 moles ethylene oxide (NP–E10 ). If the molar composition of the micelles is used as the x-axis, the cmc is more or less the arithmetic mean of the cmcs of the two surfactants.

As mentioned before, carbohydrate ester surfactants suffer from the disadvantage of chemical instability at neutral or alkaline pH (due to the instability of the ester bond). This instability problem can be overcome by using alkyl glycosides which are based on similar building blocks. Chemical synthesis is useful for the production of mixtures of alkyl glycosides as discussed before. When pure isomers are needed, enzymatic synthesis offers an attractive alternative. Two main classes of enzymes can be used for coupling the carbohydrate part to a hydrophobic alcohol, namely glycosyl transferases and glycosyl hydrolases.

4. Shapes of micelles. indicate that in many systems the micelles are not spherical. For example, Debye and Anacker [11] proposed a cylindrical micelle to explain the light scattering results on hexadecyltrimethyl ammonium bromide in water. Evidence for disc-shaped micelles have also been obtained under certain conditions. A schematic representation of the spherical, lamellar and rod-shaped micelles, suggested by McBain, Hartley and Debye is given in Fig. 4. Many ionic surfactants show dramatic temperature-dependent solubility as illustrated in Fig.

Download PDF sample

An Introduction to Surfactants by Tharwat F. Tadros

by Donald

Rated 4.73 of 5 – based on 12 votes