Hlobo luni lwe-solvent i-DMF?
I-Dimethylformamide (DMF) iyi-solvent esetshenziswa kabanzi embonini yamakhemikhali. Ukuqonda ukuthi hlobo luni lwe-DMF ye-solvent lubalulekile kubasebenzi bokukhiqiza amakhemikhali, ucwaningo lwaselabhorethri kanye nezinkambu ezihlobene. Kulesi sihloko, sizohlaziya ngokuningiliziwe izici zamakhemikhali ze-DMF, ukusetshenziswa kwayo kanye nokusetshenziswa kwayo emikhakheni ehlukene ukuze sisize abafundi bathole ukuqonda okuphelele kwalesi sincibilikilisi esibalulekile.
Ikhemistry ye-DMF
Hlobo luni lwe-solvent i-DMF? Okokuqala, kufanele siqale ezintweni zayo zamakhemikhali.Ifomula yamakhemikhali ye-DMF yemolekyuli ithi C₃H₇NO, futhi ngokwesakhiwo iyingxenye ye-dimethyl ye-formamide. Iwuketshezi olungenambala, olusobala, olugeleza kalula olunephunga elifishane lenhlanzi.Isici esihlukile se-DMF i-polarity yayo ephezulu kakhulu, ene-dielectric constant efinyelela ku-36.7, kanye nomthamo ophezulu we-solvency, oyenza ikwazi ukuncibilikisa kokubili izinto ezipholile nezingezona ze-polar. Ngakho-ke, i-DMF idlala indima ebalulekile njenge-solvent ekuphenduleni kwamakhemikhali okuhlukahlukene.
Ukuhlukahluka kwe-DMF
Ukuqonda ukuthi i-DMF iyini njenge-solvent kusiza ukuqaphela ububanzi bayo bokusetshenziswa emikhakheni ehlukene.I-DMF isetshenziswa kakhulu njenge-polymer disolver, i-chemical reaction medium kanye ne-solvent yokuhlanza. Isibonelo, ekukhiqizeni imicu namapulasitiki, i-DMF iyi-solvent enhle kakhulu ye-polyurethane ne-polyvinyl chloride; embonini yezemithi, isetshenziswa kabanzi njengendlela yokusabela ye-organic synthesis, ikakhulukazi ukulungiselela izinto ezisebenzayo. Ezilabhorethri zamakhemikhali, i-DMF ivamise ukusetshenziselwa ukuncibilikisa izinhlobonhlobo zezinhlanganisela ze-polar, isiza abacwaningi ukuba benze imisebenzi enembile yokusabela kwamakhemikhali.
Izinzuzo ze-DMF ezinhlelweni ezikhethekile
Kwezinye izinhlelo zokusebenza ezikhethekile, indima ye-DMF igqame kakhulu. Isibonelo, i-DMF isetshenziswa kakhulu ku-electrochemistry, lapho ukungaguquguquki kwayo okuphezulu kakhulu kwe-dielectric kuyenza i-solvent evamile ekuhlolweni kwe-electrochemical, futhi iyincibilikisi ebalulekile yokuhlanza, ikakhulukazi izinqubo zokuhlanza ezidinga izincibilikisi ze-polar kakhulu, njengokuhlanzwa kwemishini kagesi kanye nezinsimbi ezinembayo. Ukuqonda ukuthi iyini i-DMF i-solvent kungasiza ekukhetheni indlela yokuhlanza efanele futhi kuthuthukise ukusebenza kahle komsebenzi.
Ukuphepha kanye Nokukhathazeka Kwemvelo kwe-DMF
Nakuba i-DMF inezinhlobonhlobo zezicelo, kodwa ukuphepha kwayo nokuvikelwa kwemvelo akufanele kunganakwa. I-DMF inezinga elithile lobuthi, ukuchayeka isikhathi eside kungabangela ukulimala kwesibindi, ukusetshenziswa kwenqubo kufanele kuthathe izinyathelo ezifanele zokuphepha, njengokugqoka amagilavu ​​okuzivikela, imaski, ukuqinisekisa ukuthi indawo yokusebenza ingena kahle umoya. Ukulahlwa kwemfucuza ye-DMF nakho kuyindaba ebalulekile, ukuphathwa kwemfucuza okunengqondo kuwukhiye wokunciphisa ukungcoliswa kwemvelo.
Isiphetho
I-DMF iyi-solvent ebaluleke kakhulu futhi esetshenziswa kabanzi. Ukuqonda ukuthi yini i-DMF iyi-solvent ngeke kusize kuphela odokotela ukuthi bakhethe kangcono futhi basebenzise i-solvent, kodwa futhi kuthuthukise ukuphepha nokusebenza kahle ekusebenzeni kwangempela. Ngokuthuthuka okuqhubekayo kobuchwepheshe bamakhemikhali, isidingo kanye nokusetshenziswa kwe-DMF nakho kuzokhula.