Uruvange rugufi, rugira uruhare runini mu kunoza imikorere yo kubaka sima ivanze n’amazi, rutanga arenga 40% by’ikiguzi cy’ibikoresho mu sima ivanze n’amazi. Ibyinshi mu bivange ku isoko ry’imbere mu gihugu bitangwa n’inganda z’abanyamahanga, kandi ingano y’ibicuruzwa bivangwa n’amazi nayo itangwa n’ababicuruza. Igiciro cy’ibicuruzwa bivanze n’amazi kiracyari hejuru bityo, kandi biragoye gukurura sima isanzwe y’amabuye n’iy’amabuye yo gusigwa ku bwinshi kandi butandukanye. Ibicuruzwa byo ku isoko rinini bigenzurwa n’amasosiyete y’amahanga, kandi abakora sima ivanze n’amazi bafite inyungu nke kandi ku giciro gito; ikoreshwa ry’ibivange nta bushakashatsi bukozwe neza kandi bugamije, kandi bakurikiza mu buryo butari bwo uburyo bwo kuvanga ibintu mu mahanga. Dore icyo tubabwira ni iki, uruhare rwa hydroxypropyl methylcellulose ni uruhe mu bivange bisanzwe by’isima ivanze n’amazi?
Hydroxypropyl methylcellulose ni ubwoko bwa selulosi, umusaruro n'ikoreshwa byakomeje kwiyongera cyane mu myaka ya vuba aha. Hydroxypropyl methylcellulose ikorwa mu ipamba itunganyijwe nyuma yo kuvurwa na alkalizing, hakoreshejwe propylene oxide na methyl chloride nk'ibintu bihindura ether, ether ivanze na cellulose itari ionic ikorwa binyuze mu buryo butandukanye. Igipimo cyo gusimbuza muri rusange ni 1.2 ~ 2.0. Imiterere yayo iratandukanye bitewe n'ikigereranyo cy'ibikubiye muri methoxyl n'ibikubiye muri hydroxypropyl. Imiterere ya hydroxypropyl methylcellulose ni iyi ikurikira:
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. 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, ingaruka z'uburemere bwayo bwinshi n'ubushyuhe bwayo ziba nkeya ugereranyije n'iza methyl cellulose. Umuti wayo uhoraho iyo ubitswe ku bushyuhe bw'icyumba.
3. 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.
4. 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 gato. Hydroxypropyl methylcellulose irahamye kuri umunyu usanzwe, ariko iyo ubwinshi bw’umunyu buri hejuru, ubukana bwa hydroxypropyl methylcellulose bukunda kwiyongera.
5. Hydroxypropyl methylcellulose ishobora kuvangwa na polymer zishongeshwa n'amazi kugira ngo habeho umuti umwe kandi ufite ubukana bwinshi. Nka polyvinyl alcohol, starch ether, vegetable gum, nibindi.
6. Hydroxypropyl methylcellulose ifite ubudahangarwa bwiza bwa enzymes kurusha methylcellulose, kandi amahirwe yo kwangirika kwa enzymes mu gisubizo cyayo ni make ugereranyije n’aya methylcellulose.
7. Uburyo hydroxypropyl methylcellulose ifatana n'imiterere ya mortier buruta ubw'uburyo methylcellulose ifatana.
Igihe cyo kohereza: Gicurasi-09-2023