I-Methyl cellulose (MC) eyenziwe ngomkhiqizo wemvelo

I-Methyl cellulose (MC) iphuma ku-cellulose, okuyi-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo.I-Cellulose ingenye yezakhi eziphilayo ezitholakala kakhulu eMhlabeni, ngokuyinhloko zitholakala ku-pulp yokhuni kanye nemicu kakotini.I-MC ihlanganiswa kusuka ku-cellulose ngochungechunge lokusabela kwamakhemikhali okubandakanya ukufakwa esikhundleni kwamaqembu e-hydroxyl (-OH) ku-molecule ye-cellulose namaqembu e-methyl (-CH3).

Ngenkathi i-MC ngokwayo iyinhlanganisela eguquliwe ngamakhemikhali, impahla yayo eluhlaza, i-cellulose, itholakala emithonjeni yemvelo.I-cellulose ingakhishwa ezintweni zezitshalo ezihlukahlukene, kuhlanganise nokhuni, ukotini, i-hemp, nezinye izitshalo ezine-fibrous.I-cellulose icutshungulwa ukuze ikhiphe ukungcola futhi iguqule ibe ifomu elisebenzisekayo lokukhiqizwa kwe-MC.

Uma i-cellulose isitholiwe, ingena etherification ukwethula amaqembu e-methyl kumgogodla we-cellulose, okuholela ekwakhekeni kwe-methyl cellulose.Le nqubo ihilela ukwelapha i-cellulose ngengxube ye-sodium hydroxide ne-methyl chloride ngaphansi kwezimo ezilawulwayo.

I-methyl cellulose ewumphumela iyimpushana emhlophe ukuya kokumhlophe, engenaphunga, futhi enganambitheki encibilika emanzini abandayo futhi yakhe isixazululo se-viscous.Isetshenziswa kakhulu ezimbonini ezahlukahlukene, okubandakanya ukudla, ezemithi, ukunakekelwa komuntu siqu, kanye nokwakhiwa, ngenxa yokuqina kwayo, ukuqiniswa, kanye nezakhiwo zamafilimu.

Nakuba i-MC iyinhlanganisela eguquliwe ngamakhemikhali, isuselwa ku-cellulose yemvelo, okuyenza ibe inketho ebolayo ephilayo futhi evumelana nemvelo ezinhlelweni eziningi.