Iqhaza le-hydroxye ethyl cellulose (HEC) ekhemisi

IHydroxye ethyl cellulose (HEC) iyi-polymer esebenzayo futhi esetshenziswa kabanzi, edlala indima ebalulekile ezinhlelweni ezahlukahlukene emkhakheni wamakhemikhali. I-polymer yamanzi-esibukwayo isemathempeli, futhi i-cellulose iyi-polymer yemvelo etholakala kudonga lweseli lwesitshalo. Ukwethulwa kwe-Hydroxyl Group kungakhulisa i-solubility yamanzi futhi kuguqule izakhiwo ezingokomzimba nezamakhemikhali ze-cellulose.

1. Isingeniso seHydroxye Ethl (Hec)

I-Hydroxye ether iyisisulu se-cellulose, futhi i-cellulose iyi-polymer eliqondile eyakhiwe ngeyunithi ye-glucose exhunywe yi-β-1,4-glycoside bond. Iqembu le-hydroxyl ku-hec lethulwa ngokusabela nge-oxide. Lokhu kuguqulwa kuthuthukisa i-solubility ye-polymer emanzini, futhi ikunikeze ngezimpawu ezihlukile zokuthola izinhlelo zokusebenza ngezinqubo ezahlukahlukene zamakhemikhali.

2. Isakhiwo nezimpawu ze-HEC

Isakhiwo: Iqembu le-Hydroxyl linamathiselwe eqenjini le-hydroxyl ye-main chain ye-cellulose, enikeza ama-hec angahleliwe futhi angeyona Izinga lokubuyiselwa (i-DS) limelela inani eliphakathi lamaqembu ama-hydroxyl weyunithi ngalinye le-glucose futhi lithinta izici ze-polymer.

I-Solubinity: I-HEC ingancibilika kalula emanzini abandayo, yakha isixazululo esibonakalayo nesibonakalayo. Umphumela we-solubity uthinteka yizinto ezifana nokushisa, ama-pH kanye namandla.

I-Viscosity: Enye yezinto ezibalulekile ze-HEC yikhono layo lokuguqula i-viscosity yesisombululo. Lokhu kwenza kube yigugu ezimbonini ezilawula ukufakwa kwamanzi.

3. Synthesis we-Hydroxyl ethyl cellulose

Ukusabela okwenziwe ngempumelelo: Ukuhlanganiswa kwe-HEC kufaka phakathi ukusabela phakathi kwe-cellulose ne-oxide lapho kungekho khona ama-alkaline carlysts. Ungalawula izinga lokubuyiselwa esikhundleni ngokulungisa izimo zokuphendula (njengokushisa, isikhathi, nokuhlushwa okusabela).

Ukuhlanzwa: Imikhiqizo yokugcina ivame ukuhlanzwa ukususa ukungcola kanye ne-reagents engathandeki ukuqinisekisa izici ezidingekayo ze-HEC.

4. Isicelo samakhemikhali

Upende kanye nezembatho: I-HEC isetshenziswa kabanzi njengokuqina kanye nokuqina kupende obhalwe amanzi kanye nokumboza. Kuthuthukisa izimfanelo zohlelo lokusebenza futhi kuthuthukise ukuhamba ngopende.

Izimonyo nemikhiqizo yokunakekelwa komuntu siqu: Ngenxa yesixazululo sayo samanzi nezimpawu zokuqina, i-HEC ingatholakala ezimotweni eziningi kanye nokupheka komuntu siqu, kufaka phakathi i-lotion, i-shampoo no-ayisikhilimu.

I-Pharmaceutical: Efomula yezemithi, i-HEC isetshenziswa njengamathebhulethi, amathebhulethi kanye ne-viscosity modifiers, amathebhulethi amboza, ama-gels endawo kanye nezinhlelo zokudluliselwa kwezidakamizwa ezilawulwayo.

Induna Yokwakha: I-HEC isetshenziselwa izinto zokwakha, njengosimende -Based ngodaka kanye nokunamathela ukuze kuthuthukiswe izinsiza kanye nokunamathelisa.

I-5. Iqhaza Kumanzi -I-Adhesive

Ifomula ye-Pubin: Faka i-HEC ungene emanzini anamanzi-ahlelwe ukuhlinzeka ngezimpawu zokunamathela kokulawulwa kwe-viscosity, ukuqina kanye nokwenza ngcono. Kuwusizo ikakhulukazi kuhlelo lokusebenza olungafanele lwe-solvent -Based Adhesives.

6. Thuthukisa ukululama kwamafutha

I-VisCosity Modifier: Emafutheni kawoyela kanye nemvelo yemvelo yemvelo, i-hec isetshenziswa njengesiguquli se-viscosity ukuze sithuthukise inqubo yokubuyiselwa kwamafutha (eor). Kuthuthukisa ukubonwa kwamanzi okusetshenziselwa umjovo, ngaleyo ndlela kuthuthukise ukuhanjiswa kwamafutha endaweni yokugcina amanzi.

7. Umthelela Wezemvelo Nokusimama

Ukuwohloka kwe-Bio: I-HEC ivame ukubhekwa njenge-biodegradable futhi isiza ukwamukelwa kwayo kwezemvelo. Kodwa-ke, ukuqina okuphelele kokukhiqizwa kwayo kuncike ezintweni ezifana nenqubo yeselula nezokukhiqiza.

8. Inselelo kanye nokubuka okuzayo

I-BioCOMSTILITIty: yize i-HEC ivame ukubhekwa njengephephile, i-biocomtic yayo kanye nemiphumela yezempilo engaba khona kuzinhlelo zokusebenza ezithile, ikakhulukazi emkhakheni wezokwelapha kanye nezidakamizwa, kusalokhu kusenziwa amasimu okucwaninga.
I-Green ebanzi: Imizamo eqhubekayo igxile ekuthuthukisweni kwemizila yokuhlanganiswa okunobungani kwemvelo ukunciphisa umthelela wezemvelo wokukhiqizwa kwawo.
IHydroxyeyl Cellulose idlala indima ebalulekile kuzinhlelo zokusebenza ezahlukahlukene zamakhemikhali, ihlinzeka ngenhlanganisela eyingqayizivele yamanzi - ukuguqulwa kwe-viscosity kanye ne-biodergradation. Ithonya layo lezezimboni ezifana nopende, izimonyo, imithi, ukunamathela kanye nokuvuselelwa kwamafutha. Ngokuqhubeka kocwaningo, uhlobo lwe-HEC kanye nohlelo lwaso olungaba khona emikhakheni evelayo kunganwebeka, ngaleyo ndlela kuqhubeke ukubaluleka kwenkundla yamakhemikhali.

I-Hydroxye ethyl cellulose ifakazela izidingo eziningi ezisebenzayo ze-polymer ekuhlangabezaneni nokwehlukahlukana kwemboni yamakhemikhali, futhi umthelela wayo uqhubeke nokunwebeka ezindaweni eziningi ezincike kwizinto ezinhle kakhulu zokuthola ukusebenza okuhle kakhulu.