Uyini umehluko phakathi kwe-hydroxyethyl cellulose ne-hydroxypropyl celtulose?

IHydroxYethyl Cellulose (HEC) neHydroxypropyl celtulose (HPC) zombili ezivela ku-cellulose, i-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. Lezi zinto zokutholwa zisetshenziswa kabanzi kwizimboni ezahlukahlukene ngenxa yezakhiwo zazo ezihlukile. Naphezu kwamagama abo afanayo nezinhlaka zamakhemikhali, kunomehluko omkhulu phakathi kwe-HEC ne-HPC ngokuya ngezakhiwo zabo, izinhlelo zokusebenza, kanye nokusebenzisa.

Isakhiwo samakhemikhali:
I-HEC ne-HPC yomabili ama-derivativeves aguqulwe ngamaqembu we-hydroxyalkyl. Lawa maqembu anamathiselwe kwi-cellulose backbone ngokusebenzisa ukuxhumana kwe-ether, okuholele ekusetshenzisweni okuthuthukile nezinye izakhiwo ezifiselekayo.

I-Hydroxyyethyl cellulose (HEC):
Ku-HEC, amaqembu we-hydroxyethyl (-ch2chChloko) anamathele kumayunithi we-anhydroglucose we-cellulose backbone.
Izinga lokufakwa esikhundleni (DS) lisho inani eliphakathi lamaqembu we-hydroxyethyl ngamunye uphiko lwe-anhydroglucose. Amanani aphezulu we-DS akhombisa isilinganiso esiphakeme sokufakwa esikhundleni, okuholela ekutheni kwenziwe insonclity nezinye izakhiwo eziguquliwe.

I-Hydroxypropylllose (HPC):
Ku-HPC, amaqembu we-hydroxypropyl (-ch2chohch3) anamathele kumayunithi we-anhydroglucose we-cellulose backbone.
Ifana ne-HEC, izinga lokufaka esikhundleni (DS) ku-HPC linquma izakhiwo zalo. Amanani aphezulu we-DS avela ekukhuliseni insomity kanye nezakhiwo eziguquliwe.

Izakhiwo ezibonakalayo:
I-HEC ne-HPC inezakhiwo ezifanayo zomzimba ngenxa ye-backmbose yazo ejwayelekile ye-cellulose. Kodwa-ke, ukungezwani okucashile kuvela kumaqembu athile we-alkkyl anamathiselwe kwi-cellulose backbone.

I-Solubity:
Kokubili i-HEC ne-HPC kuncibilika emanzini kanye nezinto ezihlukile ze-organic, ngokuya ngezinga lazo lokufaka esikhundleni. Amanani aphezulu we-DS ngokuvamile aphumela ekuhlanzeni okungcono.
I-HEC ivame ukubonisa i-soubity engcono emanzini ngokuqhathaniswa ne-HPC, ikakhulukazi emazingeni okushisa aphansi, ngenxa yesimo se-hydrophilic samaqembu e-ethyl.

I-Viscosity:
Bobabili i-HEC ne-HPC bayakwazi ukwakha izixazululo ze-viscous lapho zichithwa emanzini. I-viscosity yekhambi incike ezintweni ezifana nokuhlushwa kwe-polymer, izinga lokufaka esikhundleni, kanye nokushisa.
Izixazululo ze-HPC zivame ukukhombisa ubuhlakani obuphakeme kunezinxazululo ze-HEC ngokugxila kanye nemibandela efanelekile ngenxa yosayizi omkhulu weqembu le-propll ngokuqhathaniswa neqembu le-ethyl.

Izicelo:
I-HEC ne-HPC ithola ukusetshenziswa okubanzi kwizimboni ezahlukahlukene, kufaka phakathi amakhambi, imikhiqizo yokunakekelwa komuntu, ukudla, ukumboza, kanye nezinto zokwakha, ngenxa yezinto zazo ezihlukile.

Izemithi:
Zombili i-HEC ne-HPC zivame ukusetshenziswa njenge-excipietieticals yezemithi ekwakhiweni kwezidakamizwa. Basebenza njengama-ejenti okuqina, abaqinisi, abakhethi befilimu, kanye ne-viscosity modifiers e-Oral, Topical, kanye nokwakhiwa kwe-Ophthalmic.

I-HPC, ngokubonakala kwayo okuphezulu kanye nezakhiwo ezenziwe ngefilimu, kuvame ukukhethwa ekwenziweni kokukhishwa okuqhubekayo kanye namathebulethi aqhekeke ngomlomo.
I-HEC isetshenziswa kakhulu kumalungiselelo we-ophthalmic ngenxa yezakhiwo zayo ezinhle kakhulu ze-mucoadhesive kanye nokuhambisana nezicubu ze-ocular.

Imikhiqizo Yokunakekelwa Kwakho:
Ezimonyo zemikhiqizo yokunakekelwa komuntu siqu, zombili i-HEC ne-HPC zisetshenziswa njengama-ejenti wokuqina, abaqinisi, kanye namafomu efilimu emikhiqizweni efana nama-shampoos, ama-lotion, okhilimu kanye namajeli.
I-HEC ilindelwe emikhiqizweni yokunakekelwa kwezinwele ngenxa yezakhiwo zayo ezinhle kakhulu zokuhambisana kanye nokuhambisana nama-surfficants ahlukahlukene.
I-HPC isetshenziswa kakhulu emikhiqizweni yokunakekelwa komlomo, efana namazinyo kanye nomlomo, ngenxa yezakhiwo zayo zokuqina kanye nokuqina.

Imboni yokudla:
I-HEC ne-HPC evunyelwe izengezo zokudla ezinezicelo njengezinhlanga, ukuqina, kanye nama-emulsifiers emikhiqizweni yokudla.
Zivame ukusetshenziswa emikhiqizweni yobisi, amasoso, ukugqoka kanye nama-dessert ukuthuthukisa ukuthungwa, ngomlomo, nokuqina.
I-HEC ivame ukuthandwa ngokwakhiwa kokudla kwe-acid ngenxa yokuqina kwayo ngaphezu kwebanga le-PH.

Imidwebo nezinto zokwakha:
Ezinkotsheni nasezintweni zokwakha, i-HEC ne-HPC zisetshenziswa njengama-ejenti wokuqina, ama-rheology modifiers, nama-ejenti wokugcina amanzi kupende, anamathela, ngodaka, kanye nokwakheka komoya.
I-HEC ikhethwa ekwakhekeni kwepende laseTatex ngenxa yokuziphatha kwayo okunciphisayo nokuhambisana nezinye izengezo zepende.
I-HPC isetshenziswa kakhulu ezintweni ezisekelwe kasimende ukwenza ngcono ukuzokwenza, ukunamathela, kanye nokugcinwa kwamanzi.

I-Hydroxyyethyl cellulose (I-HYDROXYPROPYL CULLLULOOSE (HPC) iyi-cellulose derivatives enezakhiwo ezihlukile kanye nezicelo. Ngenkathi womabili ama-polymers abelana ngesakhiwo sawo samakhemikhali nasezakhiweni zawomzimba, umehluko uvela emaqenjini athile we-hydroxyaalkyl anamathele kwi-cellulose backbone. Lo mehluko uphumela ekuhlukahlukani kwe-solubity, ukubonana nokusebenza ezinhlelweni ezahlukahlukene kuwo wonke ama-Industries anjengezimboni ezinjengezemithi, imikhiqizo yokunakekelwa komuntu, ukudla, izindwangu. Ukuqonda lokhu kwehluka kubalulekile ekukhetheni okufunwa yiselula okuvela kuzinhlelo ezithile, ukuqinisekisa ukusebenza kahle nokusebenza.