1. Intangiriro kuri Hydroxyethyl Cellulose (HEC):
Hydroxyethylcellulose ni amazi akuramo amazi ya selile, polymer karemano iboneka murukuta rwibimera. Guhindura selile hamwe na hydroxyethyl matsinda byongera imbaraga zamazi mumazi kandi bigaha ibintu byihariye HEC, bigatuma HEC iba ibikoresho byagaciro mubikorwa bitandukanye.
2. Imiterere ya HEC:
Imiterere ya HEC ikomoka kuri selile, umurongo wa polysaccharide ugizwe no gusubiramo ibice bya glucose bihujwe na β-1,4-glycosidic. Amatsinda ya Hydroxyethyl yinjizwa mumugongo wa selile binyuze muri etherification reaction. Impamyabumenyi yo gusimbuza (DS) bivuga umubare mpuzandengo w'amatsinda ya hydroxyethyl kuri buri gice cya glucose kandi bigira ingaruka ku gukomera no gukomera kwa HEC.
3. Ibiranga HEC:
A. Gukemura amazi: Kimwe mu bintu by'ingenzi bigize HEC ni ubwinshi bw’amazi menshi, biterwa no gusimbuza hydroxyethyl. Uyu mutungo worohereza gutegura ibisubizo no gutatanya bikwiranye na progaramu zitandukanye.
b. Ubushobozi bwo kubyimba: HEC irazwi cyane kubera ubunini bwayo mubisubizo byamazi. Iyo ikwirakwijwe mumazi, ikora gel isobanutse kandi igaragara neza, bigatuma ikoreshwa mubisabwa bisaba kugenzura ububobere.
C. pH Igihagararo: HEC yerekana ituze hejuru ya pH yagutse, bigatuma ihuza nibisanzwe haba acide na alkaline.
d. Ubushyuhe butajegajega: Ibisubizo bya HEC biguma bihamye kurwego rwubushyuhe. Barashobora kunyuramo inshuro nyinshi zo gushyushya no gukonjesha nta mpinduka zikomeye zijimye cyangwa indi miterere.
e. Gukora firime: HEC irashobora gukora firime zoroshye kandi zibonerana zikwiranye na progaramu nka coatings, adhesives na firime.
F. Igikorwa Cyubuso: HEC ifite imitungo isa na surfactant, ifite akamaro mubisabwa bisaba guhindura ubuso cyangwa guhagarara.
4.Synthesis ya HEC:
Synthesis ya HEC ikubiyemo etherification ya selile na selile ya Ethylene imbere ya catalizike ya alkaline. Igisubizo kirashobora kugenzurwa kugirango ugere kurwego rwifuzwa rwo gusimburwa, bityo bikagira ingaruka kumiterere yanyuma yibicuruzwa bya HEC. Synthesis isanzwe ikorwa mugihe cyagenzuwe kugirango ibicuruzwa bihamye kandi byiza.
5. Gushyira mu bikorwa HEC:
A. Irangi hamwe na Coatings: HEC ikoreshwa cyane nkibyimbye mu gusiga amarangi ashingiye kumazi. Itezimbere imvugo, yongerera uburiganya, kandi igira uruhare muburyo bwo gutuza.
b. Ibicuruzwa byita kumuntu ku giti cye: HEC nibintu bisanzwe mubicuruzwa byita kumuntu nka shampo, amavuta yo kwisiga hamwe na cream. Ikora nkibyimbye, stabilisateur hamwe nogukora firime, kunoza imikorere rusange yibi bikorwa.
C. Imiti: Mu nganda zimiti, HEC ikoreshwa muburyo bwo kuvuga. Irashobora gukora nka binder, disintegrant, cyangwa matrix yahoze muburyo bwa tablet, kandi nkumuhinduzi wa viscosity muri geles yibanze hamwe na cream.
d. Ibikoresho byubwubatsi: HEC ikoreshwa mubikorwa byubwubatsi nkibikoresho bigumana amazi muburyo bwa sima. Itezimbere imikorere yubwubatsi, ikongerera igihe cyo gufungura, kandi ikongerera guhuza amatafari hamwe na minisiteri.
e. Inganda za peteroli na gazi: HEC ikoreshwa mu nganda za peteroli na gaze nkumubyimba wo gucukura amazi. Ifasha kugenzura ububobere kandi itanga ibintu byo guhagarika kugirango ibice bitangirika.
F. Inganda zikora ibiribwa: HEC ikoreshwa mu nganda zibiribwa nkibibyimbye, stabilisateur na gelling mubicuruzwa bitandukanye, birimo isosi, imyambarire hamwe nubutayu.
6. Ibitekerezo bigenga:
HEC isanzwe izwi nkumutekano (GRAS) ninzego zibishinzwe kandi imikoreshereze yabyo itandukanye igenwa kugirango umutekano w’abaguzi unoze neza. Ababikora bagomba kubahiriza amabwiriza yakarere kandi bakabona ibyemezo bikenewe kubisabwa byihariye.
7. Ibizaza hamwe nudushya:
Ubushakashatsi burimo kwibanda ku iterambere ryibyahinduwe bya HEC hamwe nibintu byongerewe imbaraga kubikorwa byihariye. Hariho kandi kongera kwibanda ku guhanga udushya mu buryo burambye bwo gushakisha no gutanga umusaruro kugira ngo dukemure ibibazo by’ibidukikije no guteza imbere ubundi buryo bwangiza ibidukikije.
Hydroxyethylcellulose (HEC) ni polymer itandukanye, itandukanye kandi ifite imiterere yihariye nko gukama amazi, ubushobozi bwo kubyimba, hamwe nubushyuhe bukabije. Kuva ku marangi no gutwikira kugeza mu nganda zikora imiti n’ibiribwa, HEC igira uruhare runini mu kuzamura imikorere y’ibicuruzwa bitandukanye. Mugihe ubushakashatsi niterambere bikomeje, HEC birashoboka ko izakomeza kugira uruhare runini mu nganda zinyuranye, igira uruhare mu guteza imbere ibikoresho n’ibikorwa.
Igihe cyo kohereza: Ukuboza-29-2023