HydroxyPropyl methylcellsellus (HPMC) ni ibintu bisanzwe polymer bikoreshwa mubiryo, ubuvuzi, kwisiga, kwisiga nizindi nzego. Ubukwe bwayo nicyo kimenyetso cyerekana imikorere yacyo, mubisanzwe bifitanye isano rya bugufi nibintu nka falecular ya HPMC, igisubizo, ubwoko bwikibazo nubushyuhe.
1. Uburemere bwa molekile
Uburemere bwa HPMC bwa HPMC nimwe mubintu bikomeye cyane bigira ingaruka kuri viscosity. Muri rusange, ingano nini yuburemere bwa molekile, igihe kirekire urunigi rwa molec, rurumuri, amazi, nisuku nkurubanza. Ni ukubera ko imiterere yumurongo wa Macromolecular itanga imikoranire yimikorere myinshi, bikaviramo imipaka ikomeye kumazi yigisubizo. Kubwibyo, mugihe kimwe, ibisubizo bya HPMC hamwe nuburemere bunini bwa moleka ubusanzwe bugaragaza ubushishozi bwo hejuru.
Ubwiyongere bwuburemere bwa molekile nabwo bugira ingaruka kumiterere ya viscoelastique yigisubizo. Ibisubizo bya HPMC hamwe nuburemere bwo hejuru bwa molekalar viohit kumwanya munini wogosha, mugihe hejuru yikibazo cyo hejuru Ibi bituma HPMC ifite imyitwarire igoye cyane muburyo butandukanye bwo gukoresha.
2. Igisubizo
Kwibanda ku gisubizo bigira ingaruka zikomeye kuri viscosiya za HPMC. Mugihe kwibanda kuri HPMC yiyongera, imikoranire iri hagati ya molekile mubisubizo iriyongera, bikavamo kwiyongera kwiyongera bityo byongereye uruzitiro. Muri rusange, kwibanda kuri HPMC byerekana iterambere ridahwitse mu buryo runaka, ni ukuvuga, igipimo aho urujijo rwiyongera hamwe no kwibanda buhoro buhoro.
Cyane cyane mubisubizo byinshi-byo kwibandaho, imikoranire hagati yiminyururu ya molekile irakomeye, hamwe nurusobe cyangwa pelation birashobora kubaho, bizarushaho kongera ubukwe bwigisubizo. Kubwibyo, mubyemezo byinganda, kugirango ugere kuri vino nziza ya virusire, akenshi ni ngombwa guhindura ibintu bya HPMC.
3. Ubwoko bwa Soutson
Kudakemurwa no gusya bya HPMC nabyo bifitanye isano n'ubwoko bwa sorventi. HPMC isanzwe ikoresha amazi nkigisubizo, ariko mubihe runaka, ibindi bicuruzwa nka Ethanol na acetone nabyo birashobora gukoreshwa. Amazi, nkamazi, arashobora gusabana cyane hamwe nitsinda rya hydroxyl na methyl muri molekile ya HPMC kugirango iteze imbere iseswa ryayo.
Polalaire yo gukema, ubushyuhe, hamwe n'imikoranire hagati ya solevem hamwe na molekile ya HPMC izagira ingaruka ku kuntu kwikebana no gusya ya HPMC. Kurugero, mugihe igitekerezo gito gikoreshwa, mubikesha bya HPMC iragabanuka, bikavamo ubukwe bwo hasi bwigisubizo.
4. Ubushyuhe
Ingaruka zubushyuhe kuri viscosity ya HPMC nayo irakomeye. Mubisanzwe, viscolity yo gukemura Hpmc igabanuka hamwe nubushyuhe. Ibi ni ukubera ko iyo ubushyuhe bwiyongera, icyerekezo cyubushyuhe bwa moleki kiriyongera, bikaviramo intege nke z'imbaraga z'imikoranire hagati ya molekile, bityo bigabanya ubukuru.
Mu bushyuhe bumwe, imiterere y'amagambo ya HPMC yerekana imyitwarire igaragara itagaragara, ni ukuvuga ko bigaragara ko vicosiya ntabwo igira ingaruka ku gipimo cy'iminsi, ahubwo igira ingaruka ku buryo bugaragara n'ubushyuhe. Kubwibyo, mubikorwa bifatika, igenzura ubushyuhe ni bumwe muburyo bwiza bwo guhindura viscosiya rya HPMC.
5. Igipimo
Ibyatsi bya HPMC igisubizo ntabwo bibazwa gusa nibintu bihamye, ariko no ku kigero cy'iminsi. HPMC ni amazi atari ashyamani, kandi uruzinduko rwarwo ruhinduka hamwe no guhindura umubare munini. Muri rusange, igisubizo cya HPMC cyerekana ubushishozi bwo hejuru ahantu h'imijyi mito, mu gihe viscozetity igabanuka cyane ku gipimo cy'iminsi miremire. Iyi ngingo yitwa kogosha.
Ingaruka zo gukanda amaso kuri viscosity yo gukemura HPMC isanzwe ifitanye isano nimyitwarire igenda yinyungu za molekile. Ku gipimo cy'iminsi mike, iminyururu ya moleki zikunda kwizirika hamwe, bikaviramo ubukuru bwo hejuru; Ku giciro cyinshi cyogoshe, imikoranire hagati yiminyururu ya molecular iravunika kandi uruzitiro ruto.
6. Agaciro PH
Uruzinduko rwa HPMC narwo rufitanye isano na PH agaciro ka PH. Molekile ya HPMC irimo hydroxy osiproppopyle na methyl, kandi amategeko yiya matsinda yibasiwe na PH. Muri rusange PH Rangs, molekile ya hpmc irashobora gukoresha iole cyangwa ifishi, bityo ihindura viscosity yumuti.
Mubisanzwe, mubidukikije bya aside cyangwa alkaline, imiterere ya HPMC irashobora guhinduka, igira ingaruka kumikoranire yayo hamwe na molekile ya solveni na, nayo, igira ingaruka kuri vinosiya. Kundangagaciro zitandukanye, gushikama hamwe nuburyo bwo gukemura HPMC birashobora kandi gutandukana, kwitabwaho cyane bigomba kwitabwaho cyane muri PH kugenzura mugihe cyo gukoresha.
7. Ingaruka z'Inyongera
Usibye ibintu byavuzwe haruguru, ingingo zimwe na zimwe nk'unyunyu n'inshyi zirashobora kandi kugira ingaruka kuri viscosity ya HPMC. Ongeraho umunyu urashobora guhindura imbaraga za ionic yo kumuti, bityo bigira ingaruka kubibazo byo kwikebana na viscosiya bya molekile ya HPMC. Kwirukanwa birashobora guhindura imiterere ya HPMC uhindura imikoranire hagati ya molekile, bityo ihindura uruzitiro.
Ibyatsi bya HPMC bigira ingaruka kubintu byinshi, harimo uburemere bwa molekile, ubwoko bwikibazo, ubwoko bwa sorvent, ubushyuhe, igipimo cyiminsi, agaciro. Kugirango tugenzure ibiranga HPMC, ibi bintu bigomba guhindurwa neza hakurikijwe ibisabwa. Mugusobanukirwa ibi bintu bigira ingaruka, imikorere ya HPMC irashobora guteganya mubicuruzwa bitandukanye no gukoresha imikoreshereze kugirango ihuze na porogaramu nuburyo butandukanye muburyo butandukanye.
Igihe cyagenwe: Feb-15-2025