Ni gute impumuro ya hydroxypropyl methylcellulose igira ingaruka ku bwiza?

Ingaruka z'ingano y'impumuro mbi ku gipimo cya hydroxypropyl methylcellulose ni izihe:

Gutunganyahydroxypropyl methylcellulose: Sukura selulosi ikoze mu ipamba iyunguruye ukoresheje lye kuri 35-40°C mu gihe cy'igice cy'isaha, kanda, uceceke, hanyuma ushaje neza kuri 35°C, kugira ngo impuzandengo ya polymerization ya alkali yabonetse ibe mu rugero rukenewe rw'imigozi iri imbere. Shyira fibre ya alkali mu gikoresho cyo gupima, ongeramo propylene oxyde na methyl chloride bikurikiranye, hanyuma uteke kuri 50-80°C mu gihe cy'amasaha 5, igitutu ntarengwa ni hafi 1.8MPa. Hanyuma ongeramo ingano ikwiye ya aside hydrochloric na aside oxalic mu mazi ashyushye kuri 90°C kugira ngo woze ibikoresho kugira ngo wongere ingano. Shyira amazi mu cyuma gipima amazi. Karaba n'amazi kugeza igihe ntarengwa. Iyo ubushuhe bw'ibikoresho buri munsi ya 60%, byumutse ukoresheje umwuka ushyushye kuri 130°C kugeza igihe ubushuhe buri munsi ya 5%.

HPMC ikorwa n'uburyo bwo gukaraba ikoresha toluene na isopropanol nk'imiti isukura. Iyo gukaraba bitari byiza, impumuro nkeya irakomeza. Kuri ubu, ubwiza bwa hydroxypropyl methylcellulose yo mu rugo HPMC buratandukanye cyane, kandi igiciro kiratandukanye cyane, bigatuma abakiriya bagorwa no guhitamo neza. Iki ni ikibazo cy'uburyo bwo gukaraba, ntabwo bigira ingaruka ku ikoreshwa kandi nta kibazo, HPMC yonyine ntigomba guhumurizwa na amoniya, sitashi na alcool;HPMCishobora guhumurirwa impumuro z'ubwoko bwose, nubwo yaba idafite uburyohe, yumva iremereye. Ariko, hydroxypropyl methylcellulose ikorwa n'inganda nyinshi ifite impumuro ikomeye cyane n'impumuro ikaze. Ubwiza bwayo ntabwo buri ku rwego rwo hejuru.

Hypromellose iboneka binyuze mu gutera ipamba itunganyijwe n'amazi make kugira ngo haboneke selulose ya alkaline, hanyuma hongerwamo solvent, etherification agent, toluene, na isopropanol kugira ngo habeho etherification reaction, hagakurwaho gukaraba, kumisha, gusya, nibindi kugira ngo haboneke ibikoresho birangiye. Hazabaho impumuro nziza, bityo abayikoresha bashobora kuyikoresha bafite icyizere.