Ukuze sithelekise i-CMC (carboxymethylcellulose) kunye ne-HPMC (hydroxypropylmethylcellulose), kufuneka siqonde iimpawu zazo, usetyenziso, izibonelelo, iingxaki, kunye neemeko zokusetyenziswa kwazo. Zombini ezi zinto ziphuma kwi-cellulose zisetyenziswa kakhulu kumashishini ahlukeneyo, kuquka amayeza, ukutya, izinto zokuthambisa kunye nokwakha. Ngayinye ineempawu zayo ezikhethekileyo ezenza zifaneleke kwiinjongo ezahlukeneyo. Masenze uthelekiso olunzulu olupheleleyo ukuze sibone ukuba yeyiphi engcono kwiimeko ezahlukeneyo.
1. Inkcazo kunye nesakhiwo:
I-CMC (i-carboxymethylcellulose): I-CMC yi-cellulose derivative enyibilikayo emanzini eveliswa yi-reaction ye-cellulose kunye ne-chloroacetic acid. Iqulethe amaqela e-carboxymethyl (-CH2-COOH) adityaniswe namanye amaqela e-hydroxyl e-glucopyranose monomers enza umqolo we-cellulose.
I-HPMC (i-hydroxypropyl methylcellulose): I-HPMC ikwayi-cellulose derivative enyibilikayo emanzini eveliswa ngokunyanga i-cellulose nge-propylene oxide kunye ne-methyl chloride. Iqulethe amaqela e-hydroxypropyl kunye ne-methoxy anamathele kwi-cellulose backbone.
2. Ukunyibilika:
I-CMC: Iyanyibilika kakhulu emanzini, yenza isisombululo esicacileyo nesiqinileyo. Ibonisa indlela yokuhamba kwe-pseudoplastic, oko kuthetha ukuba i-viscosity yayo iyancipha xa iphantsi koxinzelelo lwe-shear.
I-HPMC: Ikwanyibilika emanzini, yenza isisombululo esixineneyo kancinci kune-CMC. Ikwabonisa ukuziphatha okungaguqukiyo.
3. Iimpawu ze-rheological:
I-CMC: Ibonisa indlela yokucheba uboya, nto leyo ethetha ukuba i-viscosity yayo iyancipha xa isantya sokucheba sisanda. Le mpawu iyenza ifaneleke ukusetyenziswa apho kufuneka ukuqina kodwa isisombululo kufuneka sihambe lula phantsi koboya, njengeepeyinti, iisepha kunye namayeza.
I-HPMC: ibonisa ukuziphatha okufanayo kwe-rheological njenge-CMC, kodwa i-viscosity yayo ngokubanzi iphezulu xa iphantsi. Ineempawu ezingcono zokwenza ifilimu, nto leyo eyenza ukuba ifaneleke kwizicelo ezifana neengubo, izincamathelisi kunye neefomyula zamayeza ezikhutshwa ngokulawulwayo.
4. Uzinzo:
I-CMC: Ihlala izinzile kuluhlu olubanzi lwe-pH kunye nobushushu. Iyakwazi ukunyamezela amanqanaba aphakathi ee-electrolytes.
I-HPMC: Izinzile ngakumbi kune-CMC phantsi kweemeko ze-asidi, kodwa inokuthi idlule kwi-hydrolysis phantsi kweemeko ze-alkaline. Ikwanobuthathaka kwi-divalent cations, enokubangela i-gelation okanye imvula.
5. Isicelo:
I-CMC: isetyenziswa kakhulu njenge-thickener, stabilizer kunye ne-arhente yokugcina amanzi kumashishini okutya (njenge-ayisikhrim, isosi), amayeza (njengeepilisi, i-suspension) kunye nezinto zokuthambisa (njenge-cream, i-lotion).
I-HPMC: Isetyenziswa kakhulu kwizixhobo zokwakha (umz., izincamathelisi zethayile zesamente, iplasta, udoti), amayeza (umz., iipilisi ezikhutshwa ngokulawulwayo, amalungiselelo onyango lwamehlo), kunye nezinto zokuthambisa (umz., amathontsi amehlo, iimveliso zokhathalelo lolusu).
6. Ubuthi kunye nokhuseleko:
I-CMC: Ngokuqhelekileyo ibonwa njengekhuselekileyo (GRAS) ziiarhente ezilawulayo xa isetyenziswa ngaphakathi kwemida ethile ekutyeni nakwizicelo zamayeza. Iyabola kwaye ayinabungozi.
I-HPMC: Ikwathathwa njengekhuselekileyo ukusetyenziswa ngaphakathi kwemida ecetyiswayo. Ihambelana ne-biochemical kwaye isetyenziswa kakhulu kwicandelo leyeza njenge-arhente yokukhulula elawulwayo kunye ne-tablet binder.
7. Ixabiso kunye nokuFumaneka:
I-CMC: Ngokwesiqhelo ixabisa kancinci kune-HPMC. Ifumaneka lula kubaboneleli abahlukeneyo kwihlabathi liphela.
I-HPMC: Ibiza kancinci ngenxa yenkqubo yayo yokuvelisa kwaye ngamanye amaxesha ukubonelelwa kwayo kuncinci kubathengisi abathile.
8. Impembelelo yokusingqongileyo:
I-CMC: Iyabola, ifumaneka kwizinto ezivuselelekayo (i-cellulose). Ithathwa njengenobuhlobo nokusingqongileyo.
I-HPMC: Ikwabola kwaye isuka kwi-cellulose, ngoko ke ikwanobuhlobo kakhulu nokusingqongileyo.
Zombini i-CMC kunye ne-HPMC zineempawu ezizodwa ezenza zibe zezongezo ezixabisekileyo kumashishini amaninzi. Ukukhetha phakathi kwazo kuxhomekeke kwiimfuno ezithile zokusetyenziswa ezifana nokunyibilika, ukuxinana, ukuzinza kunye nokuqwalaselwa kweendleko. Ngokubanzi, i-CMC inokukhethwa ngenxa yexabiso layo eliphantsi, ukuzinza kwe-pH ebanzi, kunye nokufaneleka kokutya kunye nokusetyenziswa kwezithambiso. I-HPMC, kwelinye icala, inokuthandwa ngenxa yokuxinana kwayo okuphezulu, iimpawu ezingcono zokwenza ifilimu, kunye nokusetyenziswa kumayeza nakwizinto zokwakha. Ekugqibeleni, ukhetho kufuneka lusekelwe ekuqwalaselweni ngokupheleleyo kwezi zinto kunye nokuhambelana nokusetyenziswa okucetywayo.
Ixesha leposi: Feb-21-2024