Inkomoko ya hydroxyethyl selulose niyihe?

Hydroxyethyl selulose (HEC) ni eferi ikonjesha amazi nonionic selulose ether, kandi isoko nyamukuru ni selile. Cellulose karemano iboneka cyane mubimera kandi nikintu cyingenzi kigize inkuta za selile. By'umwihariko, hydroxyethyl selulose ikorwa hifashishijwe imiti ikora selile ya selile hamwe na okiside ya Ethylene mubihe bya alkaline. Ubu buryo bwo kuvura imiti busanzwe bwitwa ethoxylation, kandi igisubizo nuko amatsinda ya hydroxyl kuri molekile karemano ya selile isanzwe asimburwa igice cyangwa rwose kugirango agire hydroxyethyl selulose hamwe nitsinda rya ethoxy.

Ibikurikira nintambwe zihariye zuburyo bwo gutegura hydroxyethyl selulose:

Inkomoko ya selile: Ubusanzwe selile ikurwa mubikoresho byibimera nka pamba ninkwi. Cellulose yakuweho isukurwa kandi irahumurwa kugirango ikureho umwanda nka lignin, hemicellulose nibindi bikoresho bitari selile kugirango ubone selile nziza cyane.

Kuvura alkalinisation: Kuvanga selile hamwe nigisubizo cya sodium hydroxide (NaOH), hamwe na hydroxyl mumatsinda ya selile ikora na sodium hydroxide kugirango ikore sodium selulose. Muri ubu buryo, imiterere ya selile ya selile yaguka kurwego runaka, bigatuma byoroha kubyitwaramo na okiside ya Ethylene.

Imyitwarire ya Ethoxylation: Alkalize sodium selulose ivanze na okiside ya Ethylene (C2H4O) mubushyuhe runaka nigitutu. Imiterere yimpeta ya Ethylene oxyde irakingura kugirango ikore amatsinda ya ethoxy (-CH2CH2OH), ihuza hamwe na hydroxyl matsinda kuri molekile ya selile ikora hydroxyethyl selile. Ubu buryo bwo kubyitwaramo burashobora gukorwa muburyo butandukanye, bikavamo hydroxyethyl selulose hamwe nimpamyabumenyi zitandukanye zo gusimburwa.

Nyuma yo kuvurwa: Ibicuruzwa nyuma yo kubyitwaramo birimo alkali idakozwe, ibishishwa nibindi bicuruzwa. Kugirango ubone hydroxyethyl selulose isukuye, harasabwa intambwe nyuma yo kuvurwa nko kutabogama, gukaraba no gukama. Intego yizi ntambwe zo kuvura ni ugukuraho alkali isigaye, ibishishwa hamwe nibicuruzwa kugirango ubone ibicuruzwa byanyuma.

Hydroxyethyl selulose yakoreshejwe cyane mu nganda zitandukanye kubera imiterere yihariye ya chimique n'imikorere myiza. By'umwihariko, hydroxyethyl selulose ifite amazi meza, kubyimba, gutuza, gukora firime no gusiga, kandi bikunze gukoreshwa mubice bikurikira:

Ibikoresho byubwubatsi: Mubikoresho byubwubatsi, hydroxyethyl selulose ikoreshwa cyane nkibikoresho byongera amazi kandi bigumana amazi kubikoresho bishingiye kuri sima nibikoresho bishingiye kuri gypsumu. Irashobora kunoza neza imikorere yubwubatsi bwibikoresho, kunoza gufata neza amazi, gukora no kurwanya kugabanuka kwa minisiteri, kongera igihe cyo gufungura no kwemeza ko ubwubatsi bugenda neza.

Inganda zo gusiga amarangi: Mu gusiga irangi, hydroxyethyl selulose ikoreshwa nkibyimbye, ihagarika imiti na emulifisiyeri kugirango itezimbere imvugo n’imiterere y’irangi, irinde kwangirika kw’ibara, no kongera uburinganire nuburabyo bwa coating.

Amavuta yo kwisiga hamwe nibicuruzwa byumuntu ku giti cye: Mu kwisiga, hydroxyethyl selulose ikoreshwa nkibyimbye, firime yahoze hamwe nubushuhe. Irashobora gutanga ibicuruzwa hamwe no kumva neza, kunoza ibicuruzwa bihamye no gufatana hamwe, no kongera ingaruka nziza.

Uruganda rwa farumasi: Mu rwego rwa farumasi, hydroxyethyl selulose ikoreshwa nkibikoresho byo gutegura imiti. Nkibigize ibinini bisohora-kurekura, gutwika firime, nibindi, birashobora kugenzura igipimo cyo kurekura ibiyobyabwenge kandi bigateza imbere imiti n’ibinyabuzima.

Inganda z’ibiribwa: Mu nganda z’ibiribwa, hydroxyethyl selulose ikoreshwa nk'inyongeramusaruro y'ibiryo kugira uruhare mu kubyimba, emulisation no gutuza. Ikoreshwa cyane mubinyobwa, ibiryo, ibikomoka ku mata nibindi biribwa kugirango utezimbere uburyohe nibiryo byibicuruzwa.

Hydroxyethyl selulose ifite kandi akamaro gakomeye mugukuramo amavuta, gukora impapuro, gucapa imyenda no gusiga amarangi. Mu kuvoma amavuta, hydroxyethyl selulose ikoreshwa nkibyimbye na stabilisateur yo gucukura amazi, bishobora kongera ubushobozi bwo guhagarika amazi yo gucukura no kwirinda iriba ryangirika. Mu nganda zikora impapuro, zikoreshwa nkumukozi wo kugumana no kongera imbaraga kugirango zongere imbaraga nigihe kirekire cyimpapuro. Mu gucapa no gusiga irangi, hydroxyethyl selulose ikoreshwa nkibyimbye kugirango ifashe gucapa no gusiga amarangi kugirango bigabanwe neza kandi bitezimbere ubuziranenge bwo gucapa no gusiga irangi.

Hydroxyethyl selulose iboneka muri selile naturel ikoresheje urukurikirane rw'imiti. Gukoresha kwinshi ntiguterwa gusa nubwiza buhebuje bwumubiri nubumara, ariko nanone kubera ko bishobora gutanga ibisubizo bitandukanye mubikorwa byinshi kugirango bikemure tekiniki zitandukanye.