Bambanci Tsakanin CMC da HPMC

Carboxymethyl cellulose (CMC) da hydroxypropyl methylcellulose (HPMC) nau'ikan nau'ikan cellulose ne guda biyu waɗanda ake amfani da su sosai a cikin masana'antar abinci, magunguna, da masana'antar kulawa ta sirri. Duk da yake ana amfani da su duka azaman thickeners, stabilizers, da emulsifiers, akwai wasu bambance-bambance masu mahimmanci tsakanin CMC da HPMC wanda ya sa su dace da aikace-aikace daban-daban. A cikin wannan labarin, za mu tattauna bambance-bambance tsakanin CMC da HPMC dangane da tsarin sinadarai, kaddarorinsu, amfani, da aminci.

1. Tsarin Sinadarai

CMC shine polymer mai narkewa da ruwa wanda aka samo daga cellulose, wanda shine polymer na halitta wanda aka samo a cikin ganuwar kwayoyin halitta. Tsarin sinadarai na CMC yana da alaƙa da ƙungiyoyin carboxymethyl (-CH2-COOH) waɗanda ke haɗe zuwa kashin bayan cellulose. Matsayin maye gurbin (DS) na CMC yana nufin adadin ƙungiyoyin carboxymethyl waɗanda ke kasancewa ta kowace rukunin anhydroglucose (AGU) na kashin bayan cellulose. DS na CMC na iya kewayo daga 0.2 zuwa 1.5, tare da mafi girman ƙimar DS da ke nuna babban matsayi na maye gurbin.

HPMC kuma polymer ce mai narkewa da ruwa wanda aka samo daga cellulose. Koyaya, ba kamar CMC ba, ana gyara HPMC tare da ƙungiyoyin hydroxypropyl da methyl. Ƙungiyoyin hydroxypropyl (-OCH2CHOHCH3) suna haɗe zuwa ƙungiyoyin hydroxyl a kan kashin baya na cellulose, yayin da ƙungiyoyin methyl (-CH3) suna haɗe zuwa ƙungiyoyin hydroxypropyl. Matsayin maye gurbin HPMC yana nufin adadin hydroxypropyl da ƙungiyoyin methyl waɗanda ke cikin AGU na kashin bayan cellulose. DS na HPMC na iya kewayo daga 0.1 zuwa 3.0, tare da ƙimar DS mafi girma da ke nuna babban matsayi na musanyawa.

2. Kayayyaki

CMC da HPMC suna da kaddarorin daban-daban waɗanda ke sa su dace da aikace-aikace daban-daban. Wasu mahimman kaddarorin CMC da HPMC an jera su a ƙasa:

a. Solubility: CMC yana da narkewa sosai a cikin ruwa kuma yana samar da bayyananniyar mafita, danko. Har ila yau, HPMC yana da narkewa sosai a cikin ruwa, amma mafita na iya zama turbid dangane da matakin maye gurbin.

b. Rheology: CMC wani abu ne na pseudoplastic, wanda ke nufin cewa yana nuna halin ɓacin rai. Wannan yana nufin cewa danko na CMC yana raguwa yayin da yawan raguwa ya karu. HPMC, a gefe guda, wani abu ne na Newtonian, wanda ke nufin cewa ɗankowar sa ya kasance a koyaushe ba tare da la'akari da adadin shear ba.

c. Kayayyakin yin fim: CMC yana da kyawawan abubuwan ƙirƙirar fim, wanda ya sa ya dace da amfani a cikin sutura da fina-finai. Har ila yau, HPMC yana da kaddarorin shirya fina-finai, amma fina-finan na iya zama masu karye kuma suna iya fashewa.

d. Ƙarfafawa: CMC yana da ƙarfi a kan nau'in pH da yanayin zafi. Har ila yau, HPMC yana da ƙarfi a kan kewayon pH mai faɗi, amma yanayin zafi na iya shafar kwanciyar hankali.

3. Amfani

Ana amfani da CMC da HPMC a cikin aikace-aikace da yawa a cikin masana'antar abinci, magunguna, da masana'antar kulawa ta sirri. Wasu daga cikin mahimman amfanin CMC da HPMC an jera su a ƙasa:

a. Masana'antar abinci: Ana amfani da CMC a matsayin mai kauri, mai ƙarfi, da emulsifier a cikin samfuran abinci kamar ice cream, miya na salati, da kayan gasa. Hakanan ana amfani da HPMC azaman thickener da stabilizer a cikin samfuran abinci, amma an fi amfani da shi azaman wakili mai shafa don kayan ƙayatarwa kamar alewar gummy da cakulan.

b. Masana'antar harhada magunguna: Ana amfani da CMC azaman mai ɗaure, rarrabuwar kawuna, da wakili mai shafi na kwamfutar hannu a cikin ƙirar magunguna. Hakanan ana amfani da HPMC azaman mai ɗaure, mai tarwatsewa, da wakilin shafi na kwamfutar hannu a cikin ƙirar magunguna.