Ihame ryo Gutegura Cellulose Ether

Cellulose etherni polymer itandukanye ikomoka kuri selile, ibisanzwe bisanzwe biboneka mubihingwa.Irakoreshwa cyane mubikorwa bitandukanye kugirango ibyimbye, ihuza, ituza, kandi ikora firime.Dore ihame rusange ryimyiteguro ya selile ether:

1. Guhitamo Ibikoresho Inkomoko: Cellulose mubisanzwe ikomoka kumasoko ashingiye ku bimera nk'ibiti by'ibiti, ipamba, cyangwa izindi fibre karemano.Guhitamo ibikoresho byinkomoko birashobora kugira ingaruka kumiterere ya selile ether yakozwe.
2. Isuku: Ibikoresho birimo selile birimo kwezwa kugirango bikureho umwanda nka lignin, hemicellulose, nibindi bikoresho bitari selile.Iyi ntambwe ningirakamaro kugirango tubone selile nziza yo mu bwoko bwa ether.
3. Alkalisation: Cellulose isukuwe ivurwa na alkali, hydroxide ya sodium (NaOH), kugirango itangire amatsinda ya hydroxyl muri molekile ya selile.Alkalisation yongera reaction ya selile kandi ituma byoroha cyane kuri etherification.
4. Etherification: Etherification ikubiyemo gusimbuza amatsinda ya hydroxyl (-OH) mumurongo wa selile hamwe nitsinda rya ether, nka methyl, Ethyl, hydroxyethyl, cyangwa hydroxypropyl.Ubu buryo busanzwe bukorwa mugukora selile yakozwe na alkali hamwe na etherifing agent mugihe cyagenzuwe, akenshi imbere ya catalizator.Ibikoresho bisanzwe bya etherifingi harimo alkyl halide cyangwa okiside ya alkylene.
5. Kutabogama: Nyuma ya etherification, imvange ya reaction itabogamye kugirango ikureho alkali irenze.Iyi ntambwe ningirakamaro kugirango habeho umutekano n’umutekano wibicuruzwa bya selile.
6. Gukaraba no Kuma: Igicuruzwa cya selulose ether cyogejwe neza kugirango gikureho ibicuruzwa byose, reagent zidakozwe, cyangwa ibisigisigi bya catalizator.Ibikurikira, ibicuruzwa byumye kugirango ubone selile yanyuma ya selile muburyo bwa poro cyangwa granular.
7. Kugenzura ubuziranenge: Mubikorwa byose, ingamba zo kugenzura ubuziranenge zishyirwa mubikorwa kugirango harebwe urwego rwifuzwa rwo gusimburwa, gukwirakwiza uburemere bwa molekile, viscosity, nibindi bintu bifitanye isano nibicuruzwa bya selile.Ubuhanga bwo gusesengura nka Fourier-transform infrared spectroscopy (FTIR), magnetiki resonance (NMR), na viscometrie ikoreshwa muburyo bwo gusuzuma ubuziranenge.
8. Gupakira no kubika: Igicuruzwa cya nyuma cya selulose ether yapakiwe mubihe bikwiye kugirango wirinde gufata neza no kwangirika.Ububiko bukwiye, nkibidukikije bikonje, byumye, bikomeza kubungabunga ubuziranenge nubuzima bwibicuruzwa.

Mugukurikiza izi ntambwe, abayikora barashobora gukora selile ya selile ifite imitunganyirize ikwiranye ninganda zitandukanye zikoreshwa mu nganda nka farumasi, ibiryo, amavuta yo kwisiga, ubwubatsi, n’imyenda.