Glossary entry (derived from question below)
engleză term or phrase:
micelle
română translation:
micelă
Dec 11, 2009 17:54
14 yrs ago
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engleză term
micelle
GBK
din engleză în română
Tehnică/Inginerie
Chimie; Ştiinţă/inginerie chimică
Definition from
Alconox, Inc.:
A sub-microscopic aggregate of molecules. In the context of cleaners, these molecules are surfactants usually arranged in sphere or rod shapes with their hydrophilic ends facing outward into the water solution and hydrophobic ends facing the inside of the aggregate. Micelles can hold hydrophobic oil molecules at their centers to create stable emulsions.
Example sentences:
Grease and oil are nonpolar and insoluble in water. When soap and soiling oils are mixed, the nonpolar hydrocarbon portion of the micelles break up the nonpolar oil molecules. A different type of micelle then forms, with nonpolar soiling molecules in the center. Thus, grease and oil and the 'dirt' attached to them are caught inside the micelle and can be rinsed away. (About.com)
Using micelles for cleaning is not a new idea. Common household detergents contain micelles, which dramatically increase the capacity of the washwater to pick up organic contaminants. Micelles could likewise be used to remove organic contaminants from industrial waste streams. (Massachusetts Institute of Technology)
In a micelle, the tails of the soap molecules are oriented toward and into the grease, while the heads face outward into the water, resulting in an emulsion of soapy grease particles suspended in the water. (Chemistryexplained.com/)
Proposed translations
(română)
4 +6 | micelă | Antonia Toth |
Change log
Dec 11, 2009 17:53: changed "Kudoz queue" from "In queue" to "Public"
Dec 11, 2009 17:55: changed "Stage" from "Preparation" to "Submission"
Dec 14, 2009 18:55: changed "Stage" from "Submission" to "Completion"
Proposed translations
+6
11 minute
Selected
micelă
Definition from
DEXONLINE:
MICÉLĂ, micele, s.f. Grup sau agregat de molecule care se formează în substanțele coloidale și în soluțiile lor
Example sentences:
Sisteme micelare de asociatie : rezulta din dispersia moleculelor cu dimensiuni < 1 nanometru dar cu structura amfipatica . Acestia se asociaza in mediul polar sau nepolar formand micele de asociatie (chimie coloidală)
4 KudoZ points awarded for this answer.
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