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Interface and colloid science

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Branch of chemistry and physics

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Milk is anemulsified colloid of liquidbutterfat globules of 0.1 to 10 micrometer dispersed within awater-based solution.

Interface and colloid science is an interdisciplinary intersection of branches ofchemistry,physics, nanoscience and other fields^[1] dealing withcolloids,heterogeneous systems consisting of a mechanical mixture ofparticles between 1 nm and 1000 nm dispersed in a continuous medium. A colloidal solution is a heterogeneous mixture in which the particle size of the substance is intermediate between atrue solution and asuspension, i.e. between 1–1000 nm. Smoke from a fire is an example of a colloidal system in which tiny particles of solid float in air. Just like true solutions, colloidal particles are small and cannot be seen by the naked eye. They easily pass through filter paper. But colloidal particles are big enough to be blocked by parchment paper or animal membrane.

Interface and colloid science has applications and ramifications in the chemical industry, pharmaceuticals, biotechnology, ceramics, minerals,nanotechnology, and microfluidics, among others.

References

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^Lyklema, J. (2005-03-30).Fundamentals of Interface and Colloid Science: Particulate Colloids. Elsevier.ISBN 978-0-08-045439-9.

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