Umahluko phakathi kwe-HEC kunye ne-EC

I-HEC kunye ne-EC zimbini iintlobo ze-cellulose ethers ezineempawu ezahlukeneyo kunye nokusetyenziswa. I-HEC imele i-hydroxyethyl cellulose, ngelixa i-EC imele i-ethyl cellulose. Kule nqaku, siza kuxubusha umahluko phakathi kwe-HEC kunye ne-EC ngokwemichiza yabo, iipropati, ukusetyenziswa kunye nokhuseleko.

1. Ulwakhiwo lweMichiza

I-HEC kunye ne-EC zinezakhiwo zeekhemikhali ezahlukeneyo ezibanika iimpawu ezahlukeneyo. I-HEC yipolymer enyibilikayo emanzini ephuma kwi-cellulose. Yi-ether ye-cellulose ehlaziyiweyo enamaqela e-hydroxyethyl eqhotyoshelwe kwi-cellulose backbone. Iqondo lokutshintshwa (DS) lwe-HEC libhekiselele kwinani lamaqela e-hydroxyethyl akhoyo ngokweyunithi ye-anhydroglucose (AGU) yomqolo we-cellulose. I-DS ye-HEC inokusuka kwi-0.1 ukuya kwi-3.0, kunye namaxabiso aphezulu e-DS abonisa iqondo eliphezulu lokutshintshwa.

I-EC, kwelinye icala, i-polymer enganyibilikiyo yamanzi ephuma kwi-cellulose. Yi-ether ye-cellulose eguqulwayo enamaqela e-ethyl aqhotyoshelwe kwi-cellulose backbone. I-DS ye-EC ibhekisa kwinani lamaqela e-ethyl akhoyo nge-AGU ye-cellulose backbone. I-DS ye-EC inokusuka kwi-1.7 ukuya kwi-2.9, kunye namaxabiso aphezulu e-DS abonisa iqondo eliphezulu lokutshintshwa.

2. Iipropati

I-HEC kunye ne-EC zineepropati ezahlukeneyo ezenza ukuba zilungele izicelo ezahlukeneyo. Ezinye zeempawu eziphambili ze-HEC kunye ne-EC zidweliswe ngezantsi:

a. Ukunyibilika: I-HEC inyibilika kakhulu emanzini, ngelixa i-EC inganyibiliki emanzini. Nangona kunjalo, i-EC inokunyibilika kwii-solvents eziphilayo ezifana ne-ethanol, i-acetone, kunye ne-chloroform.

b. I-Rheology: I-HEC yimathiriyeli ye-pseudoplastic, ethetha ukuba ibonisa ukuziphatha kokucheba. Oku kuthetha ukuba i-viscosity ye-HEC iyancipha njengoko izinga lokucheba linyuka. I-EC, kwelinye icala, yimathiriyeli ye-thermoplastic, ethetha ukuba inokuthamba kwaye ibunjwe xa ishushu.

c. Iimpawu zokwenza ifilimu: I-HEC ineempawu ezintle zokwenza ifilimu, ezenza ukuba zilungele ukusetyenziswa kwiingubo kunye neefilimu. I-EC ineempawu zokwenza ifilimu, kodwa iifilimu zinokuba brittle kwaye zithande ukuqhekeka.

d. Ukuzinza: I-HEC izinzile kuluhlu olubanzi lwe-pH kunye neemeko zokushisa. I-EC nayo izinzile kuluhlu olubanzi lwe-pH, kodwa ukuzinza kwayo kunokuchatshazelwa ngamaqondo obushushu aphezulu.

3. Usebenzisa

I-HEC kunye ne-EC zisetyenziselwa uluhlu olubanzi lwezicelo kumashishini okutya, amayeza, kunye nokunyamekela komntu. Ezinye zezinto eziphambili zokusetyenziswa kwe-HEC kunye ne-EC zidweliswe ngezantsi:

a. Ishishini lokutya: I-HEC iqhele ukusetyenziswa njenge-thickener, stabilizer, kunye ne-emulsifier kwiimveliso zokutya ezifana neesosi, iilokhwe, kunye nempahla ebhakiweyo. I-EC isetyenziswa njengesixhobo sokugquma kwiimveliso zokutya ezifana netshungama, i-confectionery, kunye neepilisi.

b. Umzi-mveliso wamachiza: I-HEC isetyenziswa njenge-binder, i-disintegrant, kunye ne-agent yokugquma i-tablet ekuqulunqweni kwamayeza. I-EC isetyenziswa njenge-binder, i-ejenti yokwambathisa, kunye ne-ejenti yokukhululwa okuqhubekayo kwimixube yamayeza.

4. Ukhuseleko

I-HEC kunye ne-EC ngokuqhelekileyo zibhekwa njengekhuselekile ekusebenziseni ukutya kunye nezicelo zamachiza. Nangona kunjalo, njengakuyo nayiphi na into yeekhemikhali, kusenokubakho imingcipheko ethile eyayanyaniswa nokusetyenziswa kwazo. Kubalulekile ukulandela izikhokelo ezicetyiswayo zokusetyenziswa kwe-HEC kunye ne-EC ukuqinisekisa ukusetyenziswa kwazo ngokukhuselekileyo nangempumelelo.