Kunonosora Hydroxyethyl selulose

Kunonosora Hydroxyethyl selulose

Hydroxyethyl selulose (HEC) ni polymer ikemura amazi ikoreshwa cyane mubikorwa bitandukanye, harimo ubwubatsi, kwita kubantu, hamwe na farumasi. Ikorwa noguhindura imiti ya selile, ikubiyemo gusimbuza amatsinda ya hydroxyl kumurongo wa selile hamwe nitsinda rya hydroxyethyl. Urwego rwo gusimbuza (DS) rwa HEC rushobora gutandukana kuva 1.5 kugeza 2.8, bitewe nibisabwa.

Umusaruro wa HEC urimo intambwe nyinshi zo gutunganya kugirango harebwe ubuziranenge no guhuza ibicuruzwa byanyuma. Izi ntambwe zirimo:

1. Isuku rya selile: Intambwe yambere mubikorwa bya HEC ni ugusukura selile. Ibi birimo kuvanaho umwanda, nka lignin na hemicellulose, biva mu isoko ya selile, bishobora kuba ibiti cyangwa ibiti by'ipamba. Igikorwa cyo kweza gishobora kuba gikubiyemo intambwe nyinshi, nko guhumeka, gukaraba, no kuyungurura, bitewe nubwiza bwamasoko ya selile.
2. Kuvura Alkali: Cellulose isukuye noneho ivurwa n'umuti wa alkali, nka hydroxide ya sodium cyangwa hydroxide ya potasiyumu, kugirango ukore selile ya alkali. Iyi ntambwe irakenewe mugutegura selile yintambwe ikurikira, ari etherification.
3. Etherification: selile ya alkali noneho ikorwa na okiside ya Ethylene kugirango itange HEC. Iyi myitwarire isanzwe ikorwa imbere ya catalizator, nka sodium hydroxide cyangwa sodium methylate, mubushyuhe bwinshi hamwe nigitutu. Igihe cyo kubyitwaramo nubushyuhe bigenzurwa neza kugirango ugere kurwego rwifuzwa rwo gusimburwa.
4. Kutabogama: Nyuma ya reaction ya etherification, HEC itabangamiwe na aside, nka acide acike cyangwa aside citric, kugirango ihindure pH kurwego rutabogamye. Iyi ntambwe irakenewe kugirango wirinde HEC gutesha agaciro igihe.
5. Gukaraba no gukama: HEC noneho irakaraba hanyuma ikumishwa kugirango ikureho umwanda wose usigaye nubushuhe. Uburyo bwo kumisha bukorwa mubushyuhe buke kugirango HEC itangirika.
6. Kugenzura ubuziranenge: Intambwe yanyuma mu musaruro wa HEC ni ukugenzura ubuziranenge. HEC igeragezwa kubintu bitandukanye, nk'ubukonje, ibirimo ubuhehere, hamwe nubuziranenge, kugirango irebe ko yujuje ibyangombwa bisabwa kubisabwa.

Usibye izi ntambwe zo gutunganya, hari ibintu byinshi bishobora kugira ingaruka kumiterere n'imikorere ya HEC, harimo:

1. Impamyabumenyi yo gusimbuza: Urwego rwo gusimbuza (DS) rwa HEC rushobora kugira ingaruka ku gukemuka kwarwo, ubwiza, hamwe na gelation. DS yo hejuru irashobora kuvamo HEC igaragara cyane na gel-nka HEC, mugihe DS yo hepfo ishobora kuvamo HEC ikemutse kandi itemba.
2. Uburemere bwa molekuline: Uburemere bwa molekile ya HEC burashobora kugira ingaruka kumyitwarire yayo no gukemura. Uburemere buke bwa molekile burashobora kuvamo HEC igaragara cyane na gel-nka HEC, mugihe uburemere buke bwa molekile bushobora kuvamo HEC ikemuka kandi itemba.
3. Isuku: Ubuziranenge bwa HEC bushobora kugira ingaruka kumikorere no gutuza. Umwanda, nka alkali isigaye cyangwa catalizator, irashobora gutesha agaciro HEC mugihe kandi ikagira ingaruka kububasha bwayo.
4. pH: pH yumuti wa HEC irashobora kugira ingaruka kumitekerereze yayo no kwiyegeranya. PH iri hejuru cyane cyangwa hasi cyane irashobora gutera HEC gutesha agaciro cyangwa gutakaza ububobere bwayo.

HEC isanzwe ikoreshwa nkibibyimbye, bihuza, na emulisiferi mu nganda zitandukanye, harimo ubwubatsi, kwita ku muntu, hamwe n’imiti. Mu nganda zubaka, HEC ikoreshwa nk'inyongera mu bicuruzwa bishingiye kuri sima mu rwego rwo kunoza imikorere, gufata amazi, n'imbaraga zifatika. Mu bicuruzwa byita ku muntu ku giti cye, HEC ikoreshwa nkibyimbye na stabilisateur

kunoza imiterere nuburyo butajegajega, nka shampo, amavuta yo kwisiga, hamwe na cream. Mu nganda zimiti, HEC ikoreshwa nkibihuza kandi bidahwitse mugutegura ibinini.

Kugirango umenye neza imikorere ya HEC muri izi porogaramu, ni ngombwa gukoresha ibicuruzwa byujuje ubuziranenge byatunganijwe kandi bipimwa kugira ngo byuzuze ibisabwa. Usibye intambwe yo kunonosora yasobanuwe haruguru, abayikora barashobora kandi gukoresha ubundi buryo, nka filteri, kugirango barusheho kweza no gutunganya HEC.

Muri rusange, kunonosora HEC nintambwe yingenzi mubikorwa byayo kugirango ibicuruzwa byanyuma byujuje ibyangombwa bisabwa kubisabwa. Inzira ikubiyemo intambwe nyinshi, zirimo kweza selile, kuvura alkali, etherification, kutabogama, gukaraba no gukama, no kugenzura ubuziranenge. Urwego rwo gusimbuza, uburemere bwa molekuline, ubuziranenge, na pH ya HEC byose birashobora kugira ingaruka kumikorere no guhagarara neza, kandi ababikora bagomba kugenzura neza ibyo bintu kugirango babone ibicuruzwa byiza. Hamwe no kunonosora neza no kugenzura ubuziranenge, HEC irashobora gutanga ibintu byiza ninyungu muburyo butandukanye bwa porogaramu.