Ether selile irashobora gushonga mubintu byose?

Ethers ya selile ni ubwoko butandukanye bwibintu biva muri selile, polymer karemano iboneka murukuta rwibimera. Zikoreshwa cyane mu nganda zitandukanye bitewe nimiterere yihariye, harimo no gukemuka muburyo butandukanye. Gusobanukirwa imyitwarire ya solubose ethers ni ingenzi kubikorwa byabo muri farumasi, ibiryo, ubwubatsi, nizindi nzego.

Ether ya selile isanzwe ikorwa muburyo bwa chimique ihindura selile ikoresheje reaction ya etherification. Ubwoko busanzwe bwa selile ya selile harimo methyl selulose (MC), Ethyl selulose (EC), hydroxyethyl selulose (HEC), hydroxypropyl selulose (HPC), na carboxymethyl selulose (CMC). Buri bwoko bugaragaza imiterere itandukanye yo gukemuka hashingiwe ku miterere ya shimi n'urwego rwo gusimbuza.

Ubusembwa bwa selile ya selile iterwa nibintu nkurwego rwa polymerisation, urwego rwo gusimburwa, uburemere bwa molekile, na miterere yitsinda risimburana. Mubisanzwe, selile ya selile ifite impamyabumenyi yo hasi yo gusimbuza hamwe nuburemere bwa molekile ndende ntibishobora gukemuka ugereranije nabafite impamyabumenyi zisimbuye nuburemere buke bwa molekile.

Imwe mu miterere yingenzi ya selile ya selile nubushobozi bwabo bwo gushonga mumashanyarazi atandukanye, harimo amazi, imashanyarazi kama, hamwe namazi amwe n'amwe ya polar. Amazi meza ni ikintu cyingenzi kiranga selile nyinshi kandi ni ingenzi cyane kubisabwa muri farumasi, ibiryo, nibicuruzwa byawe bwite.

Amazi ya elegitoronike ya selile nka HEC, HPC, na CMC akora ibisubizo bisobanutse neza, bigaragara neza iyo bikwirakwijwe mumazi. Ibi bisubizo byerekana imyitwarire ya pseudoplastique, bivuze ko ububobere bwabo bugabanuka mukibazo cyogosha, bigatuma bikoreshwa neza nkibibyimbye, stabilisateur, hamwe nogukora firime mubiribwa na farumasi.

Ubushobozi bwa selile ya selile mumashanyarazi ikomoka kumiterere yimiti hamwe na polarite yumuti. Kurugero, MC na EC zishonga muburyo butandukanye bwumuti ukomoka kumubiri, harimo acetone, Ethanol, na chloroform, bitewe nubushobozi bwabo buke bwo gusimburana hamwe na hydrophobique. Iyi mitungo ituma igira agaciro mubisabwa nka coatings, ibifata, hamwe na sisitemu yo gutanga ibiyobyabwenge.

HEC na HPC, zirimo hydroxyethyl hamwe na hydroxypropyl matsinda, zigaragaza imbaraga ziyongera mumashanyarazi ya polarike nka alcool na glycol. Ethers ya selile ikunze gukoreshwa nkibibyimbye hamwe na rheologiya ihindura ibintu byo kwisiga no kwita kubantu kugiti cyabo, ndetse no gusiga amarangi ashingiye kumazi.

CMC irashobora gushonga mumazi hamwe na polar zimwe na zimwe za polar bitewe nimbaraga za carboxymethyl, zitanga amazi-mumashanyarazi ya polymer. Ikoreshwa cyane nkumubyimba, stabilisateur, na emulisiferi mubicuruzwa byibiribwa, imiti, hamwe ninganda zikoreshwa mu nganda.

Ubusembwa bwa selile ya selile irashobora kandi guterwa nibintu byo hanze nkubushyuhe, pH, no kuba umunyu cyangwa ibindi byongeweho. Kurugero, kongeramo electrolytite nka sodium ya choride ya sodium cyangwa calcium chloride irashobora kugabanya ubukana bwamazi ya elegitoronike ya selile yamashanyarazi mugutezimbere polymer cyangwa kugwa.

selulose ethers yerekana ibintu byinshi bya solubilité ituma byongerwaho agaciro mubyiciro bitandukanye byinganda. Ubushobozi bwabo bwo gushonga mumazi, ibishishwa kama, hamwe namazi ya polar bituma habaho uburyo butandukanye uhereye kumiti yimiti kugeza kubikoresho byubwubatsi. Gusobanukirwa imyitwarire ya solubose ya selile ni ngombwa mugutezimbere imikorere n'imikorere mubicuruzwa bitandukanye.