I-Hydroxypropyl Methyl Cellulose Ebilile

IHydroxypropyl methylcellulose isetshenziswa njengempahla eluhlaza ukukhiqiza uwoyela, ongaqeda ukusetshenziswa kukashukela, uthuthukise izinga lokusetshenziswa kwezinto ezingavuthiwe, unciphise inani elisele le-substrate kumhluzi wokuvutshelwa, unciphise izindleko zokuhlanza amanzi angcolile, futhi wenze ifomula eyisici. ye-hydroxypropyl methylcellulose inenzuzo Iwusizo ekwenzeni inqwaba, inqwaba kanye nezinqubo zokuvutshelwa okuqhubekayo, ukuvimbela ukuxhashazwa kwezicubu kanye nezinkinga ezihlobene nesiko lokuhlanjululwa;futhi kunenzuzo ekusebenzeni kwezinqubo zokuvutshelwa.

IHydroxypropyl methylcellulose, i-cellulose eluhlaza, ingaba ukotini ocolisisiwe, noma kungaba ukhuni.Idinga ukucolwa ngaphambi noma ngesikhathi se-alkalization.Kudingeka ukucolisa i-cellulose impahla eluhlaza ngamandla emishini ukuze kwehliswe i-crystallinity kanye ne-polymerization degree, kwandiswe indawo yayo engaphezulu, bese kuthuthukiswa izinga le-trihydroxyl kanye nekhono lokusabela kwamakhemikhali le-reactant eringini ye-glucose ye-cellulose polymer.

Nakuba ukuhlanganiswa kwe-hydroxypropyl methylcellulose kungeyona inkimbinkimbi, i-alkali, izinto zokusetshenziswa ziyacolwa futhi zenziwe i-alkali.I-Etherification, ukubuyiswa kwe-solvent, ukuhlukaniswa kwe-centrifugal, ukuwasha nokomisa ezindaweni ezihlukahlukene, kodwa kuhilela ubuchwepheshe obuningi obubalulekile nolwazi olucebile lokuqukethwe.Ezinhlotsheni ezahlukene zemikhiqizo, indawo ngayinye inezimo zokulawula zakamuva, ezifana nezinga lokushisa, isikhathi, ingcindezi nokulawula ukugeleza kwezinsiza ezisizayo kanye namathuluzi okulawula kuyisiqinisekiso sekhwalithi yomkhiqizo ezinzile, uhlelo lokukhiqiza oluthembekile, kanye nokuvumayo.

Njengoba ukusebenza kwe-hydroxypropyl methylcellulose kufana nokwamanye ama-ethers ancibilikayo emanzini, ingasetshenziswa njenge-ejenti eyenza ifilimu, i-thickener, i-emulsifier kanye ne-stabilizer kumapende we-latex kanye nezingoma zokumboza i-resin encibilikayo emanzini, ukumelana nokuhuzuka, i-Uniform coating kanye ukunamathela, kanye nokungezwani okuthuthukisiwe kwendawo, ukuzinza kuma-asidi nezisekelo, nokuhambisana nombala wensimbi.IHydroxypropyl methylcellulose inomphumela omuhle njengokujiya kopende abamhlophe abasuselwe emanzini be-polyvinyl acetate.Izinga lokushintshwa kwe-cellulose ether liyathuthukiswa, futhi ukumelana namabhaktheriya kuyathuthukiswa.