Yini i-hydroxyethyl cellulose

IHydroxYethyl Cellulose: Ukubuka konke
IHydroxYethyl Cellulose (HEC) yi-polymer engekho, enamanzi ethathwe ku-cellulose, i-polymer yemvelo eningi kakhulu emhlabeni. Ngenxa yezakhiwo zayo eziguquguqukayo, i-HEC isetshenziswa kabanzi kuyo yonke imboni ehlukahlukene, kufaka phakathi ama-Pharmaceuticals, izimonyo, upende, nokwakha.

Synthesis of Hydroxyethyl cellulose
Ukukhiqizwa kukaHec kufaka phakathi ukusheshisa kwe-cellulose. Le nqubo iqala nge-cellulose iphathwa nge-sodium hydroxide ukukhiqiza i-Alkali Cellulose. I-Ethylene oxide sengezwe kule ngxube, okuholela ekwakhekeni kwe-hydroxyethyl cellulose. Ukuphendula kungavezwa kanjena:

Cellulose-ona + nc2ch2o → cellulose-och2chch2oh

Izinga lokufaka esikhundleni (DS) kanye ne-molar anclusiotion (MS) amapharamitha asemqoka ekunqumeni izakhiwo ze-HEC. I-DS isho inani elijwayelekile lamaqembu e-hydroxyl ku-molecule ye-cellulose elifakwe esikhundleni, kanti ama-MS akhombisa inani eliphakathi lama-moles we-ethylene oxide ngayinye iyunithi ye-clucose. Lawa mapharamitha athonya i-solubity, ukubonakala nezinye izakhiwo ezisebenzayo ze-HEC.

I-HEC inayo izakhiwo eziningana ezihlukile:

I-Solubinity: I-HEC incane emanzi ashisayo nawabandayo, akwenza kube hlukana kakhulu ngezicelo ezahlukahlukene. Kungakha izixazululo ezicacile, eziwugqinsi ezizinzayo ngaphezu kwebanga le-PH.

I-Viscosity: I-viscosity ye-HEC Solutions incike kusisindo sayo samangqamuzana kanye nokuhlushwa. I-HEC ingakhiqiza ububanzi be-viscosities, okwenza kube lusizo kuzinhlelo zokusebenza ezidinga izici ezithile zokugeleza.

Ikhono elenziwa ngefilimu: I-HEC ingakha amangalisayo, amafilimu asobala. Le mpahla iwusizo ikakhulukazi ekuhlotsheni nasezimonyo.

Umenzeli wokuqina

Ukuqina: I-HEC iyazinza ngamakhemikhali futhi imelana nokonakaliswa ngokukhanya, ukushisa, kanye ama-microorganisms, athuthukisa isikhathi eside kuzicelo ezahlukahlukene.

Izicelo ze-hydroxyethyl cellulose
Ngenxa yezakhiwo zayo ezihlukile, i-HEC ithola izinhlelo zokusebenza kumasimu amaningi:

Izemithi: Embonini yezemithi, i-HEC isetshenziswa njenge-binder, ifilimu-yangaphambili, kanye ne-ejenti yokuqina ezibhebheni nakuwo ogcoba. Kuyasiza ekukhishweni kwezidakamizwa okulawulwayo futhi kuthuthukise ukuthungwa nokuqina kokwakheka.

Izimonyo: I-HEC isetshenziswa kakhulu emikhiqizweni yokunakekelwa komuntu siqu efana nama-shampoos, ama-lotions, kanye nokhilimu. Inikeza ukubonakala okufisayo, kuthuthukisa umuzwa womkhiqizo, futhi kuqinise ama-emulsion.

Amapende nezimbobo: embonini yokupenda, i-HEC isebenza njengomkhulu, i-Stabilizer, kanye ne-ejenti yokugcina amanzi. Kuthuthukisa izakhiwo zohlelo lokusebenza lwepende, kuvimbela ukugcwala, futhi kuqinisekisa ngisho nokwakheka kwefilimu.

Ukwakhiwa: I-HEC isetshenziswa ezintweni zokwakha ezifana nosimende nodaka. Kuthuthukisa umsebenzi, ukugcinwa kwamanzi, kanye nokunamathela, ukuthuthukisa ukusebenza nokuqina kwalezi zinto zokwakha.

Imboni yokudla: yize ivame kakhulu, i-HEC ingasetshenziswa njenge-smighter kanye ne-stabilizer emikhiqizweni ethile yokudla, iqinisekisa ukuthungwa okubushelelezi nokuvumelana.

Imboni ye-Textile: I-HEC isetshenziswa njenge-ejenti yezandla embonini yezindwangu, ukuhlinzeka amandla nokuqina kwa-YARNS ngesikhathi senqubo yokuluka.

Ukuphepha kanye nomthelela wezemvelo
I-HEC ngokuvamile icatshangelwa iphephile ukuze isetshenziswe ezinhlelweni ezahlukahlukene, ikakhulukazi kuma-Pharmaceuticals kanye nezimonyo, lapho kuhlolwe khona kakhulu ubuthi nokucasuka. Akuyona into enobuthi, engacasuli, ne-hypoallergenic, okwenza ukuthi ilungele ukusetshenziswa emikhiqizweni esetshenzisiwe esikhunjeni noma efakwe.

Ngokombono wezemvelo, i-HEC iyi-biodegradable futhi ethathwe kwizisetshenziswa ezingavuselelwa (iselula). Ukukhiqizwa kwayo nokusetshenziswa kwayo kuhlotshaniswa nomthelela ophansi wezemvelo. Kodwa-ke, njengawo wonke amakhemikhali, ukuphathwa okufanele nokulahlwa okudingekayo ukunciphisa noma yiziphi izingozi ezingaba khona zemvelo.

I-Hydroxyyethyl celtulose iyi-polymer eguquguqukayo futhi ebalulekile enezicelo eziningi ezahlukahlukene kuyo yonke imboni ehlukene. Izakhiwo zayo ezihlukile, ezinjengamanzi e-solubility, ukulawulwa kwamanzi, amandla akha amafilimu, nokuqina, kwenze kube yinto ebaluleke kakhulu kwimikhiqizo esukela emikhakheni yokwakha. Ukuhlanganiswa kwe-HEC kusuka ku-cellulose kumelela ukusetshenziswa okusebenzayo kwemithombo yezemvelo, kufaka isandla ekusimuseni kwalo. Ngephrofayili eqinile yokuphepha kanye nomthelela omncane wezemvelo, i-HEC iyaqhubeka nokuba isithako esibalulekile ekwenziweni okuhlukahlukene kwezentengiso nezezimboni.