Umehluko Phakathi kwe-CMC ne-HPMC

I-Carboxymethyl cellulose (CMC) kanye ne-hydroxypropyl methylcellulose (HPMC) yizinhlobo ezimbili zokuphuma kwe-cellulose ezisetshenziswa kakhulu ezimbonini zokudla, ezemithi, nezokunakekelwa komuntu siqu. Yize zombili zisetshenziswa njengeziqinisi, iziqinisi, kanye nama-emulsifiers, kunomehluko obalulekile phakathi kwe-CMC ne-HPMC ozenza zifanelekele izinhlelo zokusebenza ezahlukene. Kulesi sihloko, sizoxoxa ngomehluko phakathi kwe-CMC ne-HPMC ngokuya ngesakhiwo samakhemikhali, izakhiwo, ukusetshenziswa, nokuphepha.

1. Isakhiwo Samakhemikhali

I-CMC iyi-polymer encibilika emanzini etholakala ku-cellulose, okuyi-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. Isakhiwo samakhemikhali se-CMC sibonakala ngamaqembu e-carboxymethyl (-CH2-COOH) anamathele kumgogodla we-cellulose. I-degree of substitution (DS) ye-CMC ibhekisela enanini lamaqembu e-carboxymethyl akhona ngeyunithi ngayinye ye-anhydroglucose (AGU) yomgogodla we-cellulose. I-DS ye-CMC ingaba kusuka ku-0.2 kuye ku-1.5, ngamavelu e-DS aphezulu abonisa izinga eliphezulu lokushintsha.

I-HPMC futhi iyi-polymer encibilika emanzini etholakala ku-cellulose. Nokho, ngokungafani ne-CMC, i-HPMC ilungiswa ngamaqembu e-hydroxypropyl namaqembu e-methyl. Amaqembu e-hydroxypropyl (-OCH2CHOHCH3) anamathele emaqenjini e-hydroxyl kumgogodla we-cellulose, kuyilapho amaqembu e-methyl (-CH3) enamathele emaqenjini e-hydroxypropyl. Izinga lokushintshwa kwe-HPMC lisho inombolo yamaqembu e-hydroxypropyl kanye ne-methyl akhona nge-AGU ngayinye yomgogodla we-cellulose. I-DS ye-HPMC ingaba kusuka ku-0.1 kuye ku-3.0, ngamavelu e-DS aphezulu abonisa izinga eliphezulu lokushintsha.

2. Izakhiwo

I-CMC ne-HPMC zinezakhiwo ezihlukile ezizenza zifanelekele izinhlelo zokusebenza ezahlukene. Ezinye zezakhiwo ezibalulekile ze-CMC ne-HPMC zibalwe ngezansi:

a. Ukunyibilika: I-CMC incibilika kakhulu emanzini futhi yakha izixazululo ezicacile, ezibukekayo. I-HPMC iphinde inyibilike kakhulu emanzini, kodwa izixazululo zingase zibe ne-turbid kuye ngezinga lokushintshwa.

b. I-Rheology: I-CMC iyimpahla ye-pseudoplastic, okusho ukuthi ibonisa ukuziphatha kokugunda kwe-shear. Lokhu kusho ukuthi i-viscosity ye-CMC iyehla njengoba izinga lokugunda likhuphuka. I-HPMC, ngakolunye uhlangothi, iyimpahla ye-Newtonian, okusho ukuthi i-viscosity yayo ihlala ingashintshi kungakhathaliseki izinga lokugunda.

c. Izakhiwo zokwenza ifilimu: I-CMC inezinto ezinhle zokwenza ifilimu, eziyenza ifanelekele ukusetshenziswa ezimbotsheni namafilimu. I-HPMC futhi inezici zokwenza ifilimu, kodwa amafilimu angase abe mahle futhi athambekele ekuqhekekeni.

d. Ukuzinza: I-CMC izinzile phezu kwebanga elibanzi le-pH nezimo zezinga lokushisa. I-HPMC futhi izinzile phezu kwebanga le-pH elibanzi, kodwa ukuzinza kwayo kungase kuthinteke amazinga okushisa aphezulu.

3. Isebenzisa

I-CMC kanye ne-HPMC zisetshenziswa ezinhlobonhlobo zezinhlelo zokudla, ezemithi, nezimboni zokunakekela abantu. Okunye ukusetshenziswa okubalulekile kwe-CMC ne-HPMC kubalwe ngezansi:

a. Imboni yokudla: I-CMC ivamise ukusetshenziswa njenge-thickener, stabilizer, kanye ne-emulsifier emikhiqizweni yokudla efana no-ayisikhilimu, okokugqoka kwesaladi, nezinto ezibhakwayo. I-HPMC iphinde isetshenziswe njenge-thickener kanye ne-stabilizer emikhiqizweni yokudla, kodwa isetshenziswa kakhulu njenge-ejenti yokugcoba emikhiqizweni ye-confectionery efana ne-gummy candies kanye noshokoledi.

b. Imboni yezemithi: I-CMC isetshenziswa njenge-binder, disintegrant, kanye ne-ejenti yokuhlanganisa amathebulethi ekwakhiweni kwemithi. I-HPMC iphinda isetshenziswe njenge-binder, disintegrant, kanye ne-ejenti yokuhlanganisa ithebhulethi ekwenziweni kwemithi.