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- Chemistry; Chem Sci/Eng
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- 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. Alconox, Inc.
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- 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
by - 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
by - 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/
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- Chemistry; Chem Sci/Eng
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- In ambiente acquoso, molecole che hanno parti polari o ioniche e parti non polari (molecole anfifiliche) formano aggregati di molecole, detti micelle. Nelle micelle, le parti polari si trovano sulla superficie dell’aggregato in contatto con l’acqua, mentre le parti non polari sono segregate all’interno. La parte interna di una micella, formata da lunghe catene alchiliche non polari, è simile ad una goccia di olio o di benzina. Università di Napoli Federico II - by Serena Arduini
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- Le strutture delle micelle possono avere diverse forme: sferiche, cilindriche, lamellari e discoidali. Nei solventi polari in genere la parte idrofobica e lipofilica si orienta all’interno di una sfera, mentre la parte idrofilica si orienta all’esterno. In solventi apolari l’orientamento è inverso (si parla di micella inversa). - Wikipedia
by Serena Arduini - Il modo nel quale le caseine si aggregano all'interno del latte è oggetto di ampio dibattito. Lo schema attualmente più accettato è presentato sotto forma di disegno dal Prof. Douglas dell'università di Guelph [4] (per una review di tutti i modelli proposti ad oggi si veda il lavoro di Phadungath)[5]. Secondo tale schema la micella di caseine è pressappoco sferica, fortemente idratata e molto aperta allo scambio di acqua con la fase continua. Le catene polipeptidiche interne sono legate a dare una matrice (in inglese cross-linked) per mezzo di inclusioni di calcio fostato grandi alcuni nanometri. - Wikibooks - Chimica organica
by Serena Arduini - I saponi in acqua formano strutture sopramolecolari dette “micelle” (delle microscopiche gocce): le code apolari degli acidi grassi, che fuggono l’acqua, sono rivolte verso il centro della micella mentre la testa polare (il gruppo carbossilico dissociato –COO-) è rivolto verso l’acqua perché è carico (interagisce con gli H parzialmente positivi dell’acqua). Quindi il centro della micella è apolare. - Studenti.it - I lipidi
by Serena Arduini - Related KudoZ question
Compare [close] - Czech
- Chemistry; Chem Sci/Eng
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- Micely jsou shluky molekul tenzidů dispergované v kapalném médiu. Typická micela ve vodném roztoku vytváří agregáty s hydrofilní částí molekuly orientovanou do vodného prostředí a hydrofóbní částí skrytou uvnitř. wikipedia - by David König
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- Hydrofobní konce molekul se snaží minimalizovat kontakt s vodným prostředím, což vede ke tvorbě micel – tvorbou micel se snižuje energie systému. - wikipedia
by David König - Related KudoZ question
Compare [close] - Serbian
- Chemistry; Chem Sci/Eng
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- Micele su agregati molekula u vodi, sa nepolarnim delovima u unutrašnjosti i polarnim na površini koaj je izložen vodi. Institut tehničkih nauka SANU - by V&M Stanković
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- Masne kiseline sa većim brojem C atoma su praktično nerastvorne u vodi. Njihove Na i K- soli se zovu sapuni. One obrazuju micele u vodi kod kojih he negativan COO- kraj okrenut ka vodi, a nepolaran C- niz je okrenut ka unutrašnjosti micele. U celini micele su naelektrisane negativno i u rastvoru ostaju suspendovane jer se međusobno odbijaju. - Wikipedia
by V&M Stanković - Мало радова обрађује утицај мицела на брзину хемијске реакције. Овде је одабран натријум-додецилсулфат (SDS) као активан тензид, који при одређеним условима гради мицеле. - Универзитет у Крагује
by V&M Stanković - Фундаментална истраживања протеина млека, посебно казеина (утицаја параметара технолошког процеса) применом савремених инструменталних метода, електронске микроскопије, гелелектрофорезе, ултрацентрифуговања и друго резултирала су значајним публикацијама и побудила велико интернационално интересовање научне јавности, дајући нове податке везане за хемију казеинске мицеле. - Univerzitet u Novom Sadu
by V&M Stanković - Related KudoZ question
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- Chemistry; Chem Sci/Eng
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- misel Alm. Mizelle
Genelde organik yapıda büyük moleküllerin bir araya gelmesiyle oluşan elektrik yüklü kolloidal sistem. Sabun ve diğer deterjanların oluşturduğu kolloidal boyuttaki tanecikler.
BSTS / Kimya Terimleri Sözlüğü (II) 2007 www.tdk.gov.tr - by harun parpucu (X)
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- Sabun molekülü hidrokarbon zinciri nedeniyle suda tam olarak çözünmez, ama miseller oluşturarak suda kolayca suspense olur. misel 5-150 sabun molekülünün hidrokarbon kısmının biraraya geldiği, iyonik ucun suya yöneldiği kümelerdir. - Avantgarde Soaps Marketing blogspot
by harun parpucu (X) - Related KudoZ question
Compare [close] - Slovak
- Chemistry; Chem Sci/Eng
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- Micela je guľovitý zhluk molekúl chemických látok, ktoré prejavujú takú či onakú povrchovú aktivitu, v kvapaline. Naznámejšie sú zrejme micely v čistiacich a pracích saponátoch.
sme.sk - by Linda Vakermanova
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- Jeden typ agregátu sa nazýva micela. Koncentrácia, pri ktorej začína tenzid tvoriť micely vnútri rozpúšťadla, sa nazýva kritická micelárna koncentrácia. - Wikipedia
by Linda Vakermanova - Related KudoZ question
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