HydroxyAythyl Cellulose (HEC) ni polymer itari ionic, ikomanga amazi akomoka kuri selile, polymer karemano iboneka mu nkuta z'akagari z'ibimera. Bikoreshwa cyane mu nganda zitandukanye, harimo imiti, kwisiga, gushushanya, no kumeneka, bitewe n'ubwinshi, bugizwe na firime. Gutegura HydroxyAythyl selile bikubiyemo gutandukanya selile hamwe na ethylene okide ya alkaline. Iyi nzira irashobora gucikamo ibice byinshi byingenzi: Kweza kwa selile, alkanalisation, Guhangana, kutabogama, kutabogama, kutabogama, no gukama.
1. Gusukura
Intambwe yambere mugutegura HydroxyIthyl selile ni ugusukura selile, mubisanzwe uva mu giti cyangwa ipamba. Ubutugo bubi burimo umwanda nko muri Ligirin, Hemicurullese, nibindi biruka bigomba gukurwaho kugirango babone selile itunganijwe neza ikwiranye no guhindura imiti.
Intambwe zirimo:
Gutunganya imashini: Ubugari bwa Cellse butunganijwe muburyo bwo kugabanya ubunini bwayo no kongera ubuso, byorohereza kuvura imiti ikurikira.
Guvura imiti: Ubugari bwa Celeulose buvurwa hamwe na sodium nka sodium hydroxide (na2som sulfite (na2so3) gucika intege no guhindaho kugirango ukureho umwanda usigaye kandi ubone selile yera, fibrous.
2. Alkalisation
Ubugari bwa feri bisuku noneho alkalize kugirango ubikore kugirango uhitemo reseaction. Ibi bikubiyemo kuvura selile hamwe nigisubizo cyagabweho cya sodium hydroxide.
Reaction:
Cellulose + Nahh → Alkali selile
Inzira:
Cellulose yahagaritswe mumazi, kandi sodium yamagambo yoroshye yongeyeho. Kwibanda kuri Naoh mubisanzwe biva kuri 10-30%, kandi reaction ikorwa mubushyuhe hagati ya 20-40 ° C.
Uruvange rurashigikiwe kugirango habeho imyenda imwe ya Alkali, biganisha ku gushinga selile ya Alkali. Iri soko rinini rigenda ryigana okiside okiside, zorohereza inzira yo guhindura.
3. Guhanga
Intambwe y'ingenzi mugutegura HydroxyEthyl selile ni uguhangana kwa alkali selile ofy. Iyi reaction itangiza amatsinda ya hydroxyyeryl (-Ch2ch2oh) muri selile ya selile, kora amazi.
Reaction:
Alkali selile + Ethylene Oxide → HydroxyAythyl Cellulose + Nahh
Inzira:
Ethylene Oxide yongewe kuri selile ya Alkali, haba mugikorwa cyangwa inzira ikomeza. Imyitwarire isanzwe ikorwa muri autoclave cyangwa igitutu.
Ibihe, birimo ubushyuhe (50-100 ° C) nigitutu (1-5 ATM), bigenzurwa neza kugirango usimbuze neza amatsinda ya Hydroxyyerthyty. Urwego rwo gusimbuza (DS) no gusimbuza umuryango (MS) nibipimo bikomeye bigira ingaruka kumiterere yibicuruzwa byanyuma.
4. Kutabogama
Nyuma yo gutandukana, imvange irimo hydroxyyethyl selile na sodium yamashanyarazi. Intambwe ikurikira, aho alkali irenze urugero ukoresheje aside, mubisanzwe acide acide (ch3coo) cyangwa aside hydrochloc (hcl).
Reaction: Naoh + HCL → Nacl + H2O
Inzira:
Acide yongewe buhoro buhoro muburyo bugenzurwa bugenzurwa kugirango birinde ubushyuhe bukabije no gukumira gutesha agaciro hydroxyyethyl selile.
Uruvange rutabogamye noneho rukorerwa PH guhindura PH kugirango rubyemeza ko ari murwego rwifuzwa, mubisanzwe hafi ya PH (6-8).
5. Gukaraba
Gukurikira kutabogama, ibicuruzwa bigomba gukaraba kugirango ukure umunyu nibindi bicuruzwa. Iyi ntambwe ni ngombwa kugirango ubone hydroxyyerthyl selile.
Inzira:
Uruvange ruvanze rwahinduwe n'amazi, kandi hydroxyAyll selile iratandukana no kugisimba cyangwa centrifugari.
Hydroxyyedthyl selile irakaraba inshuro nyinshi amazi asebanya kugirango akureho umunyu usigaye. Inzira yo gukaraba irakomeza kugeza amazi yometse ageze mu bikorwa runaka, byerekana gukuraho umwanda usakuza.
6. Kuma
Intambwe yanyuma mugutegura HydroxyEthyl selile irakama. Iyi ntambwe ikuraho amazi arenze, atanga ibicuruzwa byumye, byifu bikwiranye na porogaramu zitandukanye.
Inzira:
HydroxyEthyyl selile ikwirakwizwa no kumisha imitekerereze cyangwa itangwa binyuze mu muyoboro wumye. Ubushyuhe bwumuma bugenzurwa neza kugirango birinde gutesha agaciro ubushyuhe, mubisanzwe kuva kuri 50-80 ° C.
Ubundi, bitera gukama birashobora gukoreshwa kugirango ukure vuba kandi neza. Mugutera gukama, hydroxyyerthyl igisubizo cya selile ni cyo gitonyanga cyiza kandi cyumye mumugezi ushyushye, bikavamo ifu nziza.
Ibicuruzwa byumye noneho bikingirwa nubunini bwifuzwa kandi bwuzuye bwo kubika no gukwirakwiza.
Igenzura ryiza na porogaramu
Muburyo bwose bwo gutegura, ingamba zishinzwe kugenzura ubuziranenge zishyirwa mu bikorwa kugirango habeho gushikama n'ubwiza bwa hydroxyyethyl selile. Ibipimo by'ingenzi nka vinosity, urwego rwo gusimbuza, ibikubiyemo, hamwe n'ubunini bw'ibice birakurikiranwa buri gihe.
Porogaramu:
Farumasiti: ikoreshwa nkumukozi wijimye, binder, na stabilizer mubigize nkibinini nkibisate, guhagarikwa, n'amavuta.
Kwisiga: itanga vicosity nimbuza kubicuruzwa nka cream, amavuta, na shampoos.
Gushushanya no Guterera: Ibikorwa nkumubyimba hamwe nuburyo bwuzuye, kuzamura imitungo yo gusaba no gutuza.
Inganda zibiribwa: Imikorere nkuwijimye, stilizer, na emalifie mubicuruzwa bitandukanye.
Gutegura HydroxyAythyl selile bikubiyemo urukurikirane rw'imiti yasobanuwe neza na minishi igamije guhindura selile kugira ngo igaragaze amatsinda ya hydroxyyeryethyy. Buri ntambwe, uhereye kuri selire yo kweza, ni ngombwa muguhitamo ubuziranenge nimikorere yibicuruzwa byanyuma. HydroxyAythyl Ibintu bihuriye na selile bituma bigira ibintu bitagereranywa mu nganda nyinshi, byerekana akamaro ko gukora neza kugirango byubahirize ibisabwa bitandukanye.
Igihe cya nyuma: Gicurasi-28-2024