Muri mortilage ivanze neza, ingano y’inyongera ya hydroxypropyl methyl cellulose HPMC ni nto cyane, ariko ishobora kunoza cyane imikorere ya mortilage itose, ikaba ari inyongera ikomeye igira ingaruka ku mikorere y’ubwubatsi bwa mortilage. Ether za cellulose zifite ubukana butandukanye n’ingano yiyongereyeho zigira ingaruka nziza ku kunoza imikorere ya mortilage yumye. Kuri ubu, mortilage nyinshi z’amabuye y’agaciro n’izisimwa zifite ubushobozi buke bwo kubika amazi, kandi gutandukana kw’amazi bibaho nyuma y’iminota mike zihagaze. Kubika amazi ni imikorere y’ingenzi ya methyl cellulose ether, kandi ni imikorere abakora mortilage yumye bo mu ngo, cyane cyane abo mu turere dufite ubushyuhe bwinshi mu majyepfo, bitaho. Ibintu bigira ingaruka ku ngaruka zo kubika amazi ya mortilage yumye birimo ingano ya HPMC yongewemo, ubukana bwa HPMC, ubunini bw’uduce duto n’ubushyuhe bw’ibidukikije ikoreshwamo.
1. Igitekerezo: Cellulose ether ni polymeri ifite molekile nyinshi ikozwe muri cellulose karemano binyuze mu guhindura imiti. Cellulose ether ni ikintu gikomoka kuri cellulose karemano. Ikorwa rya cellulose ether ritandukanye na polymeri zikozwe muri sintetike. Ibikoresho byayo by'ibanze ni cellulose, imvange ya polymer karemano. Bitewe n'imiterere yihariye ya cellulose karemano, cellulose ubwayo ntabwo ifite ubushobozi bwo gukorana n'ibintu bihindura ether. Ariko nyuma yo kuvurwa, hydrogen ikomeye hagati y'iminyururu ya molekile no mu munyururu irasenyuka, kandi irekurwa ry'itsinda rya hydroxyl rihinduka cellulose ya alkali ikora. Nyuma y'uko etherification ikora, itsinda rya -OH rihindurwa itsinda rya -OR. Kubona ether ya cellulose. Imiterere ya cellulose ether iterwa n'ubwoko, ingano n'uburyo ibintu bisimburana bikwirakwira. Ishyirwa mu byiciro rya cellulose ether rishingira kandi ku bwoko bw'ibintu bisimburana, urwego rwa etherification, gushonga n'ikoreshwa bifitanye isano. Dukurikije ubwoko bw'ibintu bisimburana ku munyururu wa molekile, ishobora kugabanywamo monoether na ether ivanze. HPMC dusanzwe dukoresha ni ether ivanze. Hydroxypropyl methyl cellulose ether HPMC ni umusaruro aho igice cy'itsinda rya hydroxyl kuri iyi unit gisimburwa n'itsinda rya methoxy naho ikindi gice kigasimburwa n'itsinda rya hydroxypropyl. HPMC ikoreshwa cyane cyane mu bikoresho by'ubwubatsi, irangi rya latex, ubuvuzi, shimi ya buri munsi, nibindi. Ikoreshwa nk'ikintu gikomeza ubushyuhe, gifata amazi, gitera imbaraga, gikwirakwiza, kandi gikora filime.
2. Gufata amazi ya eteri ya selulosi: mu gukora ibikoresho by'ubwubatsi, cyane cyane sima yumye, eteri ya selulosi ifite uruhare rudasimburwa, cyane cyane mu gukora sima yihariye (sima yahinduwe), ni ingenzi cyane. Uruhare rw'ingenzi rwa eteri ya selulosi ishongera amazi muri sima ruri ahanini mu ngingo eshatu. Kimwe ni ubushobozi bwiza bwo gufata amazi, ikindi ni ingaruka ku buryo sima igumana n'uburyo ikora, naho icya gatatu ni uburyo sima ikorana na sima. Ingaruka zo gufata amazi ya eteri ya selulosi biterwa n'uburyo amazi yinjira mu gice cy'ibanze, imiterere ya sima, ubunini bw'urwego rwa sima, ubwinshi bw'amazi akenerwa muri sima, n'igihe ibikoresho bifungana bimara. Gufata amazi ya eteri ya selulosi ubwayo bituruka ku gushonga no kubura amazi kwa eteri ya selulosi ubwayo.
Ububyimbirwe n'ubukonje bwa thixotropi ya eteri ya selulosi: Uruhare rwa kabiri rwo kwiyongera kwa eteri ya selulosi biterwa na: urwego rwa polymerization ya eteri ya selulosi, ubwinshi bw'umuti, ubushyuhe n'ibindi. Imiterere ya gelation y'umuti ni imiterere yihariye ya alkyl cellulose n'ibikomoka kuri yo byahinduwe. Imiterere ya gelation ifitanye isano n'urwego rwo gusimbuza, ubwinshi bw'umuti n'inyongera.
Ubushobozi bwiza bwo kubika amazi butuma amazi ya sima arushaho kuba meza, bushobora kongera ubukana bw'amazi ya sima itose, bukongera imbaraga zo gufatanya za sima, kandi igihe gishobora guhindurwa. Kongeramo eteri ya selulose kuri sima ikoreshwa mu buryo bwa mashini bishobora kunoza imikorere yo gutera cyangwa gupompa ya sima, ndetse n'imbaraga z'imiterere yayo. Kubwibyo, eteri ya selulose irimo gukoreshwa cyane nk'inyongera y'ingenzi muri sima ivanze neza.
Igihe cyo kohereza: Ukuboza 16-2021