MC ni selulosi ya methyl, ikorwa muri eteri ya selulosi binyuze mu gutunganya ipamba itunganyijwe na alkali, hakoreshejwe methane chloride nk'igikoresho cyo gukwirakwiza eteri, no kunyura mu buryo butandukanye. Muri rusange, urwego rwo gusimbuza ni 1.6 ~ 2.0, kandi gushonga nabyo biratandukanye iyo ugereranyije n'urwego rwo gusimbuza. Ni iya eteri ya selulosi itari ioni.
(1) Uburyo methyl cellulose igumana amazi biterwa n'ingano yayo, ubukana, ubukana bw'uduce duto n'umuvuduko wo gushonga. Muri rusange, niba ingano yo kongeramo ari nini, ubukana ni buto, kandi ubukana ni bwinshi, umuvuduko wo gufata amazi ni munini. Muri byo, ingano yo kongeramo igira ingaruka nini ku muvuduko wo gufata amazi, kandi urwego rw'ubukana ntabwo rujyanye neza n'urwego rw'umuvuduko wo gufata amazi. Umuvuduko wo gushonga uterwa ahanini n'urugero rw'impinduka z'ubuso bw'uduce twa cellulose n'ubukana bw'uduce duto. Muri ether za cellulose zavuzwe haruguru, methyl cellulose na hydroxypropyl methyl cellulose bifite umuvuduko wo gufata amazi mwinshi.
(2) Methylcellulose irashonga mu mazi akonje, kandi bizagorana kuyishonga mu mazi ashyushye. Umuti wayo w'amazi uhoraho cyane mu rugero rwa pH = 3 ~ 12. Ikorana neza na sitashi, guar gum, nibindi nibindi byinshi bya surfactants. Iyo ubushyuhe bugeze ku bushyuhe bwa gelation, gelation iba ihari.
(3) Impinduka mu bushyuhe zigira ingaruka zikomeye ku muvuduko wo kubika amazi muri selulosi ya methyl. Muri rusange, uko ubushyuhe burushaho kuba bwinshi, ni ko kubika amazi birushaho kuba bibi. Iyo ubushyuhe bwa selulosi burenze dogere selisiyusi 40, kubika amazi muri selulosi ya methyl bizagabanuka cyane, bikagira ingaruka zikomeye ku bwubatsi bwa selulosi.
(4) Selulosi ya Methyl igira ingaruka zikomeye ku iyubakwa n'ifatana rya sima. "Gufatana" hano bivuga imbaraga zo gufatana hagati y'igikoresho cy'umukozi n'igice cy'urukuta, ni ukuvuga imbaraga zo gufatana za sima. Gufatana ni byinshi, imbaraga zo gufatana za sima ni nini, kandi imbaraga zisabwa n'abakozi mu ikoreshwa nazo ni nyinshi, kandi imikorere y'ifatana rya sima ni mibi. Gufatana kwa selulosi ya Methyl kuri ku rwego rwo hagati mu bicuruzwa bya eteri ya selulosi.
HPMC ni hydroxypropyl methylcellulose, ikaba ari eteri ivanze na cellulose itari ionic ikozwe mu ipamba itunganyijwe nyuma yo kuyitunganya, ikoresheje propylene oxide na methyl chloride nk'ibintu bihindura ether, ndetse binyuze mu buryo butandukanye. Igipimo cyo kuyihindura muri rusange ni 1.2 ~ 2.0. Imiterere yayo iratandukanye bitewe n'ibipimo bitandukanye by'ibikubiye muri methoxyl n'ibikubiye muri hydroxypropyl.
(1) Hydroxypropyl methylcellulose ishongeshwa byoroshye mu mazi akonje, kandi izahura n'ingorane mu gushonga mu mazi ashyushye. Ariko ubushyuhe bwayo bwo gushonga mu mazi ashyushye buri hejuru cyane ugereranyije n'ubwa methyl cellulose. Gushonga mu mazi akonje nabyo birarushaho kwiyongera ugereranije na methyl cellulose.
(2) Uburemere bwa hydroxypropyl methylcellulose bufitanye isano n'uburemere bwayo bwa molekile, kandi uko uburemere bwa molekile burushaho kuba bwinshi, niko uburemere burushaho kuba bwinshi. Ubushyuhe nabwo bugira ingaruka ku buremere bwayo, uko ubushyuhe bwiyongera, uburemere bugabanuka. Ariko, uburemere bwayo bwinshi bugira ingaruka ku bushyuhe buke ugereranyije na methyl cellulose. Umuti wayo uhoraho iyo ubitswe ku bushyuhe bw'icyumba.
(3) Hydroxypropyl methylcellulose irahamye kuri aside na alkali, kandi umuti wayo w’amazi urahamye cyane mu rugero rwa pH = 2 ~ 12. Soda ya Caustic na lime amazi ntacyo bigira ku mikorere yayo, ariko alkali ishobora kwihutisha gushonga kwayo no kongera ubukana bwayo. Hydroxypropyl methylcellulose irahamye kuri umunyu usanzwe, ariko iyo ubwinshi bw’umunyu buri hejuru, ubukana bwa hydroxypropyl methylcellulose bukunda kwiyongera.
(4) Uburyo hydroxypropyl methylcellulose igumana amazi biterwa n'ingano yayo, ubukana bwayo, n'ibindi, kandi igipimo cyo kubika amazi munsi y'ingano imwe y'inyongera kiri hejuru y'icya methyl cellulose.
(5) Hydroxypropyl methylcellulose ishobora kuvangwa n'ibinyabutabire bya polymer bishongeshwa n'amazi kugira ngo bikore umuti umwe kandi ufite ubukana bwinshi. Nka polyvinyl alcohol, starch ether, vegetable gum, nibindi.
(6) Uburyo hydroxypropyl methylcellulose ifatana n'imiterere ya mortier buruta ubw'uburyo methylcellulose ifatana.
(7) Hydroxypropyl methylcellulose ifite ubudahangarwa bwiza bwa enzymes kurusha methylcellulose, kandi umuti wayo ntushobora kwangirika cyane na enzymes kurusha methylcellulose.
Igihe cyo kohereza ubutumwa: 17 Mata 2023