Kukho iintlobo ezininzi zeselulosi, kwaye yintoni umahluko ekusebenziseni kwabo?

I-Cellulose i-polymer yendalo eguquguqukayo kunye neninzi efumaneka kwiindonga zeeseli zezityalo, ezibonelela ngenkxaso yesakhiwo kunye nokuqina. Iqulunqwe ngeeyunithi ze-glucose ezidityaniswe kunye ngeebhondi ze-β-1,4-glycosidic. Ngelixa i-cellulose ngokwayo iyinto elinganayo, indlela elungelelaniswe ngayo kwaye iqhutywe kwiindidi ezahlukeneyo ezineepropati ezahlukeneyo kunye nokusetyenziswa.

1.I-Microcrystalline Cellulose (MCC):

MCCiveliswa ngokuphatha i-cellulose fibers kunye ne-mineral acids, okubangela ukuba kuncinci, i-crystalline particles.
Ukusetyenziswa: Isetyenziswa ngokubanzi njenge-agent agent, i-binder, kunye ne-disintegrant ekuqulunqweni kwamachiza afana neepilisi kunye neepilisi. Ngenxa yobume bayo obungasebenziyo kunye noxinzelelo olugqwesileyo, i-MCC iqinisekisa ukuhanjiswa kwechiza okufanayo kwaye iququzelele ukukhutshwa kwechiza.

2.I-Cellulose Acetate:

I-cellulose acetate ifunyenwe nge-acetylating cellulose kunye ne-acetic anhydride okanye i-acetic acid.
Usetyenziso: Olu hlobo lweselulosi luqhele ukusetyenziswa ekuveliseni iintsinga zeempahla ezilukiweyo, kubandakanywa impahla yokunxiba kunye ne-upholstery. Ikwasetyenziswa ekwenzeni izihluzi zecuba, ifilim yeefoto, kunye neendidi ezahlukeneyo zeembrane ngenxa yobume bayo obungangeni ndawo.

3.Ethylcellulose:

I-Ethylcellulose ivela kwi-cellulose ngokuyiphendula nge-ethyl chloride okanye i-ethylene oxide.
Ukusetyenziswa: Iimpawu zayo ezigqwesileyo zokwenza ifilimu kunye nokuchasana ne-solvents eziphilayo zenza i-ethylcellulose ilungele ukugquma iipilisi zamachiza, inikezela ukukhululwa okulawulwayo kwamachiza. Ukongeza, isetyenziselwa ukuveliswa kwee-inki, i-adhesives, kunye neengubo ezizodwa.

4.Hydroxypropyl Methylcellulose (HPMC):

HPMCyenziwe ngokutshintsha amaqela e-hydroxyl e-cellulose kunye namaqela e-methyl kunye ne-hydroxypropyl.
Usetyenziso: I-HPMC isebenza njenge-thickener, i-stabilizer, kunye ne-emulsifier kumashishini ahlukeneyo, kuquka ukutya, izinto zokuthambisa, kunye namayeza. Iqhele ukufunyanwa kwiimveliso zokhathalelo lomntu ezifana nezinto zokuthambisa, iikhrimu, kunye nezithambiso, kunye nakwizinto zokutya ezinje ngeesosi, izinxibo, kunye ne-ayisikrimu.

5.Sodium Carboxymethyl Cellulose (CMC):

I-CMC iveliswa ngokunyanga i-cellulose nge-chloroacetic acid kunye ne-alkali.
Ukusetyenziswa: Ngenxa yokunyibilika kwayo okuphezulu kwamanzi kunye neempawu ezityebileyo,CMCisetyenziswa kakhulu njengesilungisi sokuzinza kunye ne-viscosity kwiimveliso zokutya, amayeza, kunye nokusetyenziswa kwemizi-mveliso. Ngokuqhelekileyo ifumaneka kwiimveliso ezibhakiweyo, kwiimveliso zobisi, intlama yamazinyo, kunye nezinto zokucoca.

6.Nitrocellulose:

I-nitrocellulose iveliswa nge-nitrating cellulose ngomxube we-nitric acid kunye ne-sulfuric acid.
Usetyenziso: Isetyenziswa ikakhulu ekwenzeni iziqhushumbisi, iilakhi, kunye neeplastiki zecelluloid. Iilacquers ezisekelwe kwi-nitrocellulose zithandwa ekugqityweni kweenkuni kunye neengubo zeemoto ngenxa yokumisa ngokukhawuleza kunye neempawu eziphezulu zegloss.

7.Iselulosi yeBacterial:

I-cellulose yebhaktheriya yenziwa ngeentlobo ezithile zebhaktheriya ngokuvundiswa.
Ukusetyenziswa: Iimpawu zayo ezizodwa, ezibandakanya ukucoceka okuphezulu, amandla okuqina, kunye ne-biocompatibility, yenza i-cellulose yebhaktheriya ixabiseke kwizicelo ze-biomedical ezifana nokubopha amanxeba, i-scaffolds yobunjineli bezicubu, kunye neenkqubo zokuhanjiswa kweziyobisi.

Iindidi ezahlukeneyo zeselulosi zibonelela ngoluhlu olubanzi lwezicelo kuwo wonke amashishini ahlukeneyo, kubandakanya amayeza, amalaphu, ukutya, izinto zokuthambisa, kunye nemveliso. Uhlobo ngalunye luneempawu ezizodwa ezilwenza lufanelekele ukusetyenziswa okuthile, ukusukela ekuboneleleni ngenkxaso yesakhiwo kwiipilisi zamayeza ukuya ekwandiseni ukuthungwa kweemveliso zokutya okanye ukusebenza njengenye indlela ezinzileyo kwi-biotechnology. Ukuqonda lo mahluko kwenza ukuba ukhetho olulungelelanisiweyo lweentlobo ze-cellulose luhlangabezane neemfuno ezithile zokusebenza kwizicelo ezahlukeneyo.