T/CSP 6-2019 Active Group standards

T/CSP 6-2019 Granular technology, Evaluation of stability of dispersed system, Static multiple light scattering method

Publish Date: 2019-11-22 Implement Date: 2019-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/CSP 6-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nBasic standards

ICS Name: The experimental conditions and procedures are summarized here

Publish Date: 2019-11-22

Implement Date: 2019-12-01

Scope

Scope: This standard specifies a method for evaluating the stability of dispersed systems using the principle of static multiple light scattering (SMLS). This standard applies to dispersed systems with a particle size of 50 nm to 1 mm and a volume fraction of 0.01% to 60%. Other concentrations can be referred to for guidance. Main technical content: A dispersed system is a mixture formed by dispersing one or more substances into another substance, including emulsions for liquid-liquid dispersion, suspensions for solid-liquid dispersion, and foams for gas-liquid dispersion. Dispersed systems have unique physical and chemical properties and are widely used in almost all industrial fields, including petroleum, chemical, food, pharmaceutical, ceramics, coatings, pigments, batteries, and vaccines. Dispersed systems are thermodynamically unstable systems. After the particles (liquid particles, solid particles, or bubbles) of the dispersed phase are dispersed into the continuous phase, there will be weak physical interactions or strong charge attraction between the particles and the continuous phase, or between the particles themselves, resulting in flocculation or aggregation. However, due to the different specific gravities of the various substances in a dispersed system, under the influence of gravity, particles will settle or float after being stored for a long time. These instabilities can have a significant impact on the final quality of the product and affect its shelf life. Therefore, it is very important to quickly determine the long-term stability of a dispersed system under actual storage conditions in the shortest possible time. Static multiple light scattering (SMLS) technology can qualitatively and quantitatively analyze the instability of dispersed systems, such as floating, settling, flocculation, and aggregation, without diluting the sample. By detecting the initial changes of these instabilities, it is very important to shorten the time of stability testi