Uyini umehluko phakathi kwe-methyl cellulose ne-cellulose?

I-methyl cellulose ne-cellulose bobabili bangama-polysaccharides, okusho ukuthi ama-molecule amakhulu akhiwa amayunithi aphindaphindwayo ama-molecule kashukela alula. Naphezu kwamagama abo afanayo nezici zesakhiwo, lezi zinhlanganisela zinomehluko omkhulu ngokwemigomo yesakhiwo sazo samakhemikhali, izakhiwo, kanye nezicelo.

1. Isakhiwo samakhemikhali:

Cellulose:
I-Cellulose iyi-polymer eyenzeka ngokwemvelo eyakhiwa ama-glucose amayunithi axhumeke ndawonye ngama-β-1,4 glycosidic bond. Lawa mayunithi kashukela ahlelwe emaketangeni amade elayini, akha izakhiwo eziqinile, eziqinile. I-Cellulose iyingxenye enkulu yezindonga zeseli zezitshalo ne-algae, ukuhlinzeka ukwesekwa okuhlelekile nokuqina.

Methyl cellulose:
I-Methyl celtuleose iyisisulu se-cellulose etholakala ngokulapha iselula nge-alkaline solution ne-methyl chloride. Lokhu kwelashwa kuphumela ekufuneni amaqembu we-Hydroxyl (-OH) kumaqembu we-cellulose enamaqembu we-methyl (-ch3). Izinga lokufaka esikhundleni (DS) lisho inani eliphakathi lamaqembu ama-hydroxyl afakwe esikhundleni seyunithi ye-glucose ngayinye ku-cellulose chain futhi inquma izakhiwo ze-methyl cellulose. Ngokuvamile, i-DS ephakeme iholela ekukhuliseni insonlity futhi yehlise izinga lokushisa le-gelation.

2. Izakhiwo:

Cellulose:
I-insoluble emanzini futhi iningi le-organic solvents ngenxa yokubopha kwayo okuqinile kwe-hydrogen.
Amandla aphezulu okuqina nokuqina, okufaka isandla endimeni yawo ekuhlinzekeni ukwesekwa kwesakhiwo ezitshalweni.
I-biodegradable futhi ivuseleleke, okwenza kube nobungani bemvelo.
Amandla okuvuvukala akhawulelwe emanzini.
Ngokuvamile, i-cellulose ayilungele ukusetshenziswa okuqondile ngabantu ngenxa yemvelo yayo engenakuqhathaniswa.

Methyl cellulose:
Incibilika emanzini ukuya ema-degree ahlukahlukene ngokuya ngezinga lokufaka esikhundleni.
Yakha izisombululo ezibonakalayo nezibonakalayo lapho ichithwa emanzini, okwenza kube wusizo ngezicelo ezahlukahlukene ezifana nezinamathela, ukumboza kanye nama-ejenti okuqina emikhiqizweni yokudla.
Amandla okwenza ama-gel amazinga okushisa aphakeme, abuyela kwikhambi lapho kupholisa. Le mpahla ithola izinhlelo zokusebenza emikhakheni, lapho isetshenziswa khona njenge-matrix ye-gel yokukhishwa kwezidakamizwa okulawulwayo.
Okungabi nanobuthi futhi ngokuvamile kubhekwe kuphephile ukusetshenziswa, okuvame ukusetshenziswa njengesengezo sokudla, i-emulsifier, noma i-ejenti yokuqina.

3. Izicelo:

Cellulose:
Ingxenye eyinhloko yephepha nekhadibhodi ngenxa yamandla ayo nokuqina kwayo.
Kusetshenziswe ezindwangu nasezindongeni, njengekotini nelineni, ngezakhiwo zayo zemvelo zemvelo.
Izinto zomthombo zokukhiqizwa kwe-cellulose derivatives efana ne-methyl cellulose, i-carboxymethyl cellulose (CMC), ne-cellulose acetate.
Kutholakale ezisekelweni zokudla kwe-fiber, ukuhlinzeka ngobuningi esihlalweni nasekusizile ekugayweni.

Methyl cellulose:
Kusetshenziswe kabanzi embonini yokudla njenge-ejenti yokuqina, i-Stabilizer, kanye ne-emulsifier emikhiqizweni efana namasoso, amasobho kanye nama-dessert.
Izicelo zezemithi zifaka ukusetshenziswa kwazo njenge-binder ezakhiweni zethebhulethi, isikhulisi kuma-toxical okhilimu kanye namafutha, kanye ne-ejenti ye-gelling e-oral uketshezi ngokukhishwa kwezidakamizwa okulawulwayo.
Isetshenziswa ezintweni zokwakha ezifana nodaka nodaka ukwenza ngcono ukusebenza nokunamathela.
Oqashwe emikhiqizweni yokunakekelwa komuntu siqu efana nama-shampoos kanye ne-lotions for ukuqina kwawo kanye nokuzinza izakhiwo.

4. Umthelela Wezemvelo:

Cellulose:
I-cellulose iyavuselelwa futhi iyasebenza, okwenza kube nobungani.
Kungumthombo oqhubekayo njengoba kungatholwa kusuka ezintweni ezahlukahlukene ezisekelwe kwezitshalo, kufaka phakathi i-solipunp, ukotini kanye nezinsalela zezolimo.
Izinto zokwakha ezisekelwe ku-Cellulose zingaphinde zisetshenziswe kabusha noma zihlanganiswe, zinciphisa imfucuza kanye nokungcoliswa kwemvelo.

Methyl cellulose:
I-methyl cellulose isuselwa ku-cellulose, yenza kube ngemvelo bioderhradable futhi ibe nobungane nemvelo.
Kodwa-ke, inqubo yokuguqulwa kwamakhemikhali edingekayo ukukhiqiza i-methyl cellulose ifaka ukusetshenziswa kwamakhemikhali afana ne-alkalis ne-methyl chloride, engaba nemithelela yemvelo uma ingaphathwa kahle.
Izindlela zokulahla okufanele nezinqubo zokwelashwa kwemfucuza ziyadingeka ukunciphisa noma yimuphi umthelela ongaba khona wemvelo ohambisana nokukhiqizwa nokusetshenziswa kwe-methyl cellulose.

5. Isiphetho:
I-Methyl Cellulose kanye ne-cellulose yizimpawu ezihlobene nomehluko ohlukile ezinhlakeni zazo zamakhemikhali, izakhiwo, kanye nezicelo. Ngenkathi i-cellulose isebenza njengengxenye yesakhiwo ezitshalweni futhi ithola izinhlelo zokusebenza ezimbonini ezinjengezimboni ezinjengezimboni zayo, i-tullulose, kanye nokuguquguquka kwezimboni, kanye nokuguquguquka kwezimboni ezahlukahlukene kufaka phakathi ukudla, imithi kanye nokwakha. Zombili lezi zinhlanganisela zinikela ngezinzuzo ezihlukile futhi zinomthelela ezinhlobonhlobo zemikhiqizo kanye nezicelo, nge-cellulose yokuba insiza yemvelo esimeme futhi eningi yemvelo kanye ne-methyl cellulose enikeza ukusebenza okuthuthukisiwe kanye nokusebenza kwezicelo ezithile. Ukuqonda ukungafani phakathi kwe-methyl cellulose kanye ne-cellulose kubalulekile ukusebenzisa lezi zinhlanganisela ngempumelelo futhi ngokuzinzile ezimbonini ezahlukahlukene ngenkathi kunciphisa umthelela wezemvelo.