Izina ry'Igishinwa rya HPMC ni hydroxypropyl methylcellulose. Ntabwo ari ionic kandi ikunze gukoreshwa nk'ikintu kibungabunga amazi mu cyuma kivanze n'amazi. Ni cyo gikoreshwa cyane mu cyuma kibungabunga amazi mu cyuma. Ni ether ishingiye kuri polysaccharide ikorwa na alkalizing na etherification. Nta charge ubwayo igira, ntabwo ikorana na iyoni zishaje mu cyuma kivanze n'amazi, kandi ifite imikorere ihamye. Igiciro kandi kiri hasi ugereranyije n'ubundi bwoko bwa ether za cellulose, bityo ikoreshwa cyane mu cyuma kivanze n'amazi.
Imikorere ya hydroxypropyl methylcellulose: Ishobora gukurura mortilla nshya ivanze kugira ngo igire ubushyuhe runaka butose kandi irinde gutandukana. (Kubyimba) Kubika amazi ni nabyo biranga ingenzi cyane, bifasha kugumana amazi menshi muri mortilla, ku buryo nyuma yo kubaka mortilla, ibikoresho bitera sima bigira umwanya uhagije wo kuhira. (Kubika amazi) Ifite ubushobozi bwo gushyira umwuka mu kirere, ishobora gushyiramo utubumbe tw’umwuka duto kandi duto kugira ngo inoze imiterere ya mortilla.
Uko ubushyuhe bwa eteri ya hydroxypropyl methylcellulose burushaho kuba bwinshi, ni ko imikorere myiza yo kubika amazi. Ku gicuruzwa kimwe, ibisubizo by'ubushyuhe bipimwe hakoreshejwe uburyo butandukanye biratandukanye cyane, kandi bimwe bifite itandukaniro rya kabiri. Kubwibyo, iyo ugereranije ubushyuhe, bigomba gukorwa hagati y'uburyo bumwe bwo gupima, harimo ubushyuhe, rotor, nibindi.
Ku bijyanye n'ingano y'uduce, uko agace gato kaba gato, ni ko amazi arushaho kugumana neza. Nyuma y'uko uduce duto twa cellulose ether duhuye n'amazi, ubuso buhita bushonga bugakora jeli yo gupfunyika ibikoresho kugira ngo wirinde ko molekile z'amazi zikomeza kwinjira. Hari igihe idashobora gukwirakwira no gushonga kimwe ndetse no nyuma yo kuvanga igihe kirekire, bigatuma habaho umuti w'ibicu cyangwa agglomeration. Igira ingaruka zikomeye ku kubika amazi kwa cellulose ether, kandi gushonga ni kimwe mu bintu bituma umuntu ahitamo cellulose ether. Ubutonyanga nabwo ni igipimo cy'ingenzi cy'imikorere ya methyl cellulose ether. MC ikoreshwa mu gushonga kw'ifu yumye isabwa kuba ifu, ifite amazi make, kandi ubutonyanga busaba ko 20%-60% by'ingano y'uduce tuba munsi ya 63um. Ubutonyanga bugira ingaruka ku gushonga kwa hydroxypropyl methylcellulose ether. MC ikomeye ikunze kuba granular, kandi biroroshye gushonga mu mazi nta gushonga, ariko igipimo cyo gushonga kiragenda buhoro cyane, bityo ntikwiriye gukoreshwa mu gushonga kw'ifu yumye. Mu ifu yumye, MC ikwirakwizwa mu bikoresho byo gusima nka aggregate, fin filler na sima, kandi ifu nziza ihagije ni yo yonyine ishobora kwirinda methyl cellulose ether agglomeration iyo ivanze n'amazi.
Muri rusange, uko amazi arushaho kuba menshi, ni ko ingaruka zo kubika amazi ziba nziza. Ariko, uko amazi arushaho kuba menshi kandi uburemere bwa MC bukaba bwinshi, kugabanuka kw'uburyo bwo gushonga kwabyo bizagira ingaruka mbi ku mbaraga n'imikorere y'ubwubatsi bwa mortiweri. Uko amazi arushaho kuba menshi, ni ko ingaruka zo gushonga kwa mortiweri zigaragara cyane, ariko ntabwo bingana neza. Uko amazi arushaho kuba menshi, mortiweri irushaho kuba ikomeye, ni ukuvuga ko mu gihe cyo kubaka, igaragara nk'aho ifata ku gikoresho cyo gukurura no gufatana cyane n'icyatsi. Ariko ntabwo ari byiza kongera imbaraga z'imiterere ya mortiweri itose ubwayo. Ni ukuvuga ko mu gihe cyo kubaka, imikorere yo kurwanya gushonga ntabwo igaragara. Ibinyuranye n'ibyo, hari eteri za methyl cellulose zahinduwe zifite imikorere myiza mu kunoza imbaraga z'imiterere ya mortiweri itose.
Uburyo amazi abikwamo na HPMC bufitanye isano n'ubushyuhe bukoreshwa, kandi uburyo amazi abikwamo na methyl cellulose ether bugabanuka uko ubushyuhe bwiyongera. Ariko, mu ikoreshwa ry'ibikoresho nyabyo, ifu yumye ikunze gushyirwa ku bintu bishyushye ku bushyuhe bwinshi (buri hejuru ya dogere 40) mu bidukikije byinshi, nko gusigwa ifu yo hanze y'urukuta munsi y'izuba mu mpeshyi, akenshi byihutisha Gutunganya sima no gukomera kwa firigo yumye. Kugabanuka k'umuvuduko wo kubika amazi bitera kumva ko ubushobozi bwo gukora no kudakora neza bigira ingaruka, kandi ni ingenzi cyane kugabanya ingaruka z'ubushyuhe muri iki kibazo. Muri urwo rwego, inyongera za methyl hydroxyethyl cellulose ether ubu zifatwa nk'iza mbere mu iterambere ry'ikoranabuhanga. Nubwo ingano ya methyl hydroxyethyl cellulose yiyongera (formula yo mu mpeshyi), ubushobozi bwo gukora no kudakora neza ntibishobora guhaza ibyifuzo byo gukoreshwa. Binyuze mu buryo bwihariye bwo kuvura MC, nko kongera urugero rwa etherification, nibindi, ingaruka zo kubika amazi zishobora kuguma ku bushyuhe bwinshi, kugira ngo ibashe gutanga umusaruro mwiza mu bihe bikomeye.
Muri rusange, HPMC ifite ubushyuhe bwa gel, bushobora kugabanywamo ubwoko 60, ubwoko 65, n'ubwoko 75. Ku bigo bikoresha umucanga wo mu ruzi mu gukora sima isanzwe ivanze, ni byiza gukoresha HPMC y'ubwoko 75 ifite ubushyuhe bwinshi bwa gel. Igipimo cya HPMC ntigikwiye kuba kinini cyane, bitabaye ibyo byongera amazi yo mu sima, izafatana n'agakoresho, kandi igihe cyo kuyishyiraho kizaba kirekire cyane, ibyo bizagira ingaruka ku buryo bwo kuyikora. Ibikoresho bitandukanye bya sima bikoresha HPMC ifite ubushyuhe butandukanye, kandi ntibikoresha HPMC ifite ubushyuhe bwinshi mu buryo busanzwe. Kubwibyo, nubwo ibicuruzwa bya hydroxypropyl methylcellulose ari byiza, birashimirwa iyo bikoreshejwe neza. Guhitamo HPMC ikwiye ni inshingano y'ibanze y'abakozi ba laboratwari b'ibigo.
Igihe cyo kohereza: 12 Mata 2023