HEC na HPMC

Selirulose ya Hydroxyethyl (HEC)naHydroxypropyl Methylcellulose (HPMC)ni eteri za cellulose zidafite ionic, zishonga mu mazi zikomoka kuri cellulose karemano. Zikoreshwa cyane mu nganda, mu buvuzi, mu kwita ku bantu ku giti cyabo, no mu biribwa bitewe n’ubushobozi bwazo bwiza bwo gukurura, gukora filime, gutuza no gushonga. Nubwo zisangiye bimwe mu biremwa n’imikorere, itandukaniro ryazo mu miterere ya shimi rituma habaho imiterere n’imikorere itandukanye.

1. Inkomoko n'imiterere y'ibinyabutabire

Eteri za selulosi

HEC na HPMC byombi bikorwa binyuze mu guhindura cellulose karemano hakoreshejwe imiti, ikaba ari polymer igizwe n'ibice bya β-D-glucose bihujwe n'imigozi ya β(1→4) ya glycosidic. Cellulose ubwayo ntishongera mu mazi, ariko binyuze mu guhindura shimi, ishobora guhinduka ibikomoka ku mazi bishongera.

Selirulose ya Hydroxyethyl (HEC)

HEC ikorwa binyuze mu guhuza selulosi na ethylene oxide, bigashyiramo amatsinda ya hydroxyethyl (-CH2CH2OH) ku muyoboro wa polymer. Uku guhinduka byongera ubushobozi bwo gushonga kw'amazi kandi kunoza ubushobozi bwa polymer bwo gukora ibisubizo bisobanutse kandi bihamye. Gusimbuza bibaho cyane cyane ahantu ha hydroxyl (-OH) h'ibice bya anhydroglucose mu muyoboro wa selulosi.

Hydroxypropyl Methylcellulose (HPMC)

HPMC ikorwa binyuze mu guhuza selulosi na methyl chloride na propylene oxide, bigatuma amatsinda ya hydroxyl asimburwa n'amatsinda ya methoxy (-OCH3) na hydroxypropyl (-CH2CHOHCH3). Igipimo cy'ingano ya methoxy na hydroxypropyl gishobora guhindurwa kugira ngo hahuzwe imiterere ya polymer.

2. Imiterere ifatika

Gushonga

HEC: Irashonga mu mazi ashyushye n'akonje, igakora ibisubizo bisobanutse kandi bitoshye. Ntishobora gushonga mu bintu byinshi bishongesha ibintu by'umwimerere.

HPMC: Irashonga mu mazi akonje ariko ikora gel iyo ishyushye. Ntishongera mu mazi ashyushye ariko irabyimba kandi igahindura gel zishobora guhindurwa iyo ishyushye, ibyo bikaba ingirakamaro mu gutanga imiti ikoreshwa mu buryo bugenzurwa. Hari ubwoko bushobora gushonga mu bintu bishongesha nk'ibinyabutabire nka ethanol cyangwa acetone.

Uburimbane

HEC na HPMC byombi bishobora gukorwa mu byiciro bitandukanye bya viscosity. Imiti ya HEC muri rusange itanga ubuziranenge bwinshi kandi ntigira ubushyuhe bwinshi. Viscosity ya HPMC ikunda kuba ihamye mu rugero rwa pH (3–11) kandi ifite imiterere myiza ya pseudoplastic (kugabanya ubushyuhe), ikaba ingirakamaro mu gusiga no mu miti.

Gushyira mu gaciro k'ubushyuhe

HEC: Ntigaragaza ubushyuhe bukabije.

HPMC: Igaragaza ubushyuhe bukabije. Iyo imaze gushyuha, umuti wa polymer uhinduka gel. Ibi bikoreshwa mu biryo no mu miti.

3. Imiterere y'imikorere

4. Porogaramu

Selirulose ya Hydroxyethyl (HEC)

HEC ikoreshwa cyane mu bikorwa bisaba kugenzura ubushyuhe no kugabanya ubushyuhe, cyane cyane mu buryo bushingiye ku mazi.

Amarangi n'Irangi: Akoreshwa nk'umuti ukomeza ubushyuhe no gushimangira ibara kugira ngo ridashira no kunoza imiterere y'ikoreshwa.

Kwita ku Muntu ku Giti Cye: Iboneka mu shampoo, conditioner, na lotion kubera ubushobozi bwayo bwo gukuba no guhindura rheology.

Imiti: Ikoreshwa nk'ikintu gifunga kandi gikonjesha mu buryo bwo gusiga amavuta.

Kubaka: Muri sima no mu gishishwa nk'ikintu gifata amazi no kongera ubushobozi bwo gukora.

Ibinyabutabire byo mu icukura: Bikoreshwa mu gucukura amazi mu rwego rwo kugenzura ubushyuhe no gukumira ibura ry'amazi.

Hydroxypropyl Methylcellulose (HPMC)

HPMC izwiho ubuhanga bwayo mu gutanga imiti ikoreshwa mu mazi no mu buryo bugenzurwa, ndetse no mu buryo bwo kuyifata cyangwa kuyishyira mu mafirime.

Imiti: Ikoreshwa cyane mu binini binyobwa (nk'icyuma gifunga, ikintu gikingira, cyangwa ikintu gikoreshwa mu gusohora amaraso mu buryo buhoraho), ibisubizo by'amaso, na gels zo mu bwoko bwa topical.

Inganda z'ibiribwa: Yemejwe nk'inyongeramusaruro ku biribwa (E464) kandi ikoreshwa nk'inyunganizi, igabanya ubushyuhe, kandi itera imbaraga.

Kubaka: Bikoreshwa mu byuma byumye bivanze, kole z'amatafari, na plasta kugira ngo amazi akomeze gufatana, afatanye, kandi akore neza.

Amavuta yo kwisiga: Akoreshwa mu mavuta yo kwisiga, gel, n'ibitonyanga by'amaso.

Amarangi: Asa na HEC, akoreshwa mu buryo bw'amazi mu kugenzura rheology

5. Itandukaniro ry'ingenzi

6. Umutekano no guhuza ibinyabuzima

HEC na HPMC byombi bifatwa nk'ibifite umutekano kandi ntibigira uburozi. Ntabwo binjira mu mubiri iyo bikoreshejwe mu buryo busanzwe cyangwa mu kanwa. HPMC ifite GRAS (Izwi muri rusange nk'Umutekano) kandi ikoreshwa cyane mu nganda zikora imiti n'ibiribwa bitewe nuko ihuza neza n'ibinyabuzima kandi yemerwa n'amategeko.

HEC na HPMC bafite ubushobozi bwo gukoresha ibintu byinshi, polymeri zishongesha amazi zifite imiterere itandukanye ijyanye n'ibikenewe mu nganda no mu buvuzi. Nubwo zombi zitanga imikorere myiza yo gukuba no gutuza, HPMC iragaragara cyane mu mikoreshereze y'imiti n'ibiribwa bitewe n'ubushyuhe bwayo no kuba ikora neza. HEC, ku rundi ruhande, ikunze gukoreshwa mu mikoreshereze y'amazi nk'irangi n'amavuta yo kwisiga bitewe n'uko isobanutse neza kandi ihoraho mu buryo bw'amazi.