HPMC ezokwakhiwa

I-Hydroxypropyl methyl cellulose (HPMC) iyi-ether engeyona ionic cellulose etholakala ku-cellulose yemvelo. Isetshenziswa kabanzi ekwakheni njenge-ejenti yokuqina, i-binder, i-dipersant, i-emulsifier, i-ejenti eyenza ifilimu, i-colloid evikelayo, kanye ne-ejenti yokumisa.

I-HPMC iyimpushana emhlophe kuya kokumhlophe, ayinaphunga, ayinambitheki, futhi engenabuthi. Iyancibilika emanzini abandayo futhi yakha isisombululo esicacile, esibonakalayo. Ayincibiliki kuzincibilikisi zemvelo njenge-ethanol, i-acetone, ne-benzene. I-HPMC iyi-anionic polysaccharide eyakhiwe uchungechunge lwamayunithi we-D-glucose axhunywe ngamabhondi e-β-1,4-glycosidic. Ikhiqizwa ukusabela kwe-methyl chloride ne-hydroxypropyl chloride nge-cellulose.

I-HPMC isetshenziswa kabanzi ekwakheni ngenxa yezakhiwo zayo ezinhle kakhulu. Ingasetshenziswa njenge-ejenti yokuqina ukwandisa i-viscosity yezixazululo ezinamanzi futhi ithuthukise ukusebenza kahle kukasimende nodaka. Ingasetshenziswa futhi njengesibophezelo ukwenza ngcono ukunamathela kukasimende nodaka kuma-substrates. I-HPMC ingasetshenziswa futhi njengesisabalalisi ukuze kwehliswe isidingo samanzi sikasimende nodaka futhi kuthuthukiswe ukusebenza kwazo. Ukwengeza, i-HPMC ingasetshenziswa njenge-emulsifier ukuthuthukisa ukuzinza kwezingxube zikasimende nodaka.

I-HPMC ingasetshenziswa futhi njenge-ejenti eyenza ifilimu ukuthuthukisa ukumelana namanzi kukasimende nodaka. Ingasetshenziswa futhi njenge-colloid evikelayo ukuze kuncishiswe ukungezwani okungaphezulu kukasimende nodaka futhi kuthuthukise ukusebenza kwazo. Okokugcina, i-HPMC ingasetshenziswa njenge-ejenti emisiwe ukuthuthukisa ukumiswa kwezingxube zikasimende nodaka.

I-HPMC iyisengezo esisebenzayo nesiguquguqukayo sezinhlelo zokusebenza zokwakha. Kungathuthukisa ukusebenza kukasimende nodaka, kunciphise isidingo sazo samanzi, kuthuthukise ukunamathela kwazo kuma-substrates, futhi kuthuthukise ukumelana kwazo namanzi. Ukwengeza, ingasetshenziswa njenge-emulsifier, i-ejenti eyenza ifilimu, i-colloid evikelayo, kanye ne-ejenti yokumisa. I-HPMC iyisengezo esongayo nesiphephile esingasetshenziswa ukuthuthukisa ukusebenza kwezingxube zikasimende nodaka.