2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Emulsions yog cov tshuab thermodynamically tsis ruaj khov thiab nrawm nrawm rau hauv nyias txheej ntawm cov roj thiab dej [21]. Qhov no yog vim sib txawv ntawm cov roj thiab aqueous theem thiab kev sib cuag tsis zoo ntawm cov roj thiab dej molecules [16, 28].
emulsions thermodynamically tsis ruaj khov li cas?
Los ntawm qhov pom tseeb ntawm qhov ntsuas kub, ib qho emulsion yog ib qho tsis ruaj khov vim tias muaj lub ntuj nyiam rau cov kua dej / kua dej cais thiab txo nws qhov chaw cuam tshuam thiab, yog li ntawd, nws interfacial zog. … Ua oilfield emulsions raug cais raws li lawv cov degree ntawm kinetic stability.
Vim li cas emulsions tsis ruaj khov?
Emulsion, los ntawm qhov ntsuas kub ntawm qhov ntsuas, suav tias tsis ruaj khov vim tias muaj lub siab nyiam rau cov kua lossis cov kua dej sib cais thiab txo nws qhov chaw cuam tshuam thiab, yog li ntawd, nws lub zog interfacial.
Qhov emulsion twg yog qhov ntsuas kub tsis ruaj khov tshaj plaws?
Macroemulsion. Macroemulsions yog dispersed kua-kua, thermodynamically unstable systems nrog particle loj li ntawm 1 mus rau 100 μm (kev txiav txim ntawm magnitude), uas, feem ntau, tsis tsim spontaneously.
Dab tsi yog qhov tsis ruaj khov emulsion?
Kev tsis ruaj khov. Emulsion stability yog hais txog lub peev xwm ntawm emulsion los tiv thaiv kev hloov pauv hauv nws cov khoom dhau sijhawm. Muaj plaub hom kev tsis ruaj khovHauv emulsions: flocculation, creaming / sedimentation, coalescence, thiab Ostwald ripening.
Pom zoo:
Puas muaj qhov chaw ruaj khov puas txhais tau tias tsis muaj zog nyob ruaj khov?
Thawj zaug nco ntsoov tias lub sijhawm kawg thib ob tsis suav tias yog lub ntsiab lus ntawm qhov muaj zog nyob ruaj khov, yog li, muaj zog ruaj khov tsis tas txhais tau tias tsis muaj zog nyob ruaj khov. Puas muaj zog nyob ruaj khov txhais tau tias tsis muaj zog nyob ruaj khov?
Vim li cas lub nplhaib beta lactam ntawm penicillin tsis ruaj khov?
Hydrolysis ntawm β-lactam nplhaib hauv penicillin ua rau nws tsis ua haujlwm. Hmoov tsis zoo, vim yog lub siab reactivity ntawm β-lactam nplhaib, ib penicillin tuaj yeem hnov mob nrog dej hauv cov kua qaub(raws li pom hauv plab), ua rau lub nplhaib β-lactam, hauv Cov tshuaj tiv thaiv hydrolysis.
Vim li cas ph meter nyeem tsis ruaj khov?
Thaum lub cev pH tsis ruaj khov, tsis zoo, lossis qhov kev sib tsoo, qhov teeb meem feem ntau yog ib qho hluav taws xob hauv av hauv qhov system, tshwj xeeb yog lub tank thiab / lossis cov kav dej. yog yas. Txhawm rau txheeb xyuas qhov teeb meem no, tshem tawm cov electrode thiab calibrate nws nyob rau hauv ib tug paub tsis nyob rau hauv lub beaker.
Vim li cas cov lus pom zoo yog qhov tsis ruaj khov?
Cov lus qhia zoo yog cov kab ke tsis ruaj khov. Vim tias qhov kev hloov pauv hauv ib qho kev tawm tswv yim ua rau cov lus teb uas ua rau muaj kev hloov pauv txuas ntxiv mus rau tib qho kev taw qhia, cov lus pom zoo tuaj yeem ua rau muaj kev khiav tawm.
Vim li cas lub sijhawm tsis ruaj khov tsis zoo?
Qhov thib peb suav tias yog qhov tsis zoo tag nrho vim nws tuaj yeem ua chord loj lossis me, muab qhov sib txawv, zoo siab lossis tu siab. Thaum peb hnov Dunstable lub suab paj nruag niaj hnub no, nws suab zoo dua li kev hu nkauj thaum ub vim peb pob ntseg tau ua rau cov chords loj thiab me.
