HPMC kulwakhiwo

IHydroxypropyl methyl cellulose (HPMC) yi-ether ye-cellulose engeyiyo ionic ephuma kwiselulosi yendalo. Isetyenziswa ngokubanzi kulwakhiwo njenge-agent etyebisayo, i-binder, i-dispersant, i-emulsifier, i-agent eyenza ifilimu, i-colloid ekhuselayo, kunye ne-arhente yokumisa.

I-HPMC imhlophe ukuya kumhlophe, ayinavumba, ayinancasa, kwaye ingumgubo ongeyotyhefu. I-soluble emanzini abandayo kwaye yenza isisombululo esicacileyo, esibonakalayo. Ayinyibiliki kwizinyibilikisi eziphilayo ezifana ne-ethanol, i-acetone, kunye ne-benzene. I-HPMC yi-anionic polysaccharide eyenziwe yi-chain chain ye-D-glucose units ezidityaniswe ngamabhondi e-β-1,4-glycosidic. Iveliswa ngokusabela kwe-methyl chloride kunye ne-hydroxypropyl chloride nge-cellulose.

I-HPMC isetyenziswa ngokubanzi kulwakhiwo ngenxa yeepropati zayo ezibalaseleyo. Ingasetyenziselwa njenge-agent agent yokwandisa i-viscosity yezisombululo zamanzi kunye nokuphucula ukusebenza kwe-samente kunye nodaka. Inokusetyenziswa kwakhona njenge-binder ukuphucula ukunamathela kwesamente kunye nodaka kwi-substrates. I-HPMC isenokusetyenziswa njengendawo yokuchithachitha ukunciphisa imfuno yamanzi yesamente nodaka kunye nokuphucula ukusebenza kwazo. Ukongeza, i-HPMC ingasetyenziswa njenge-emulsifier yokuphucula uzinzo lwemixube yesamente kunye nodaka.

I-HPMC ingasetyenziswa njenge-arhente yokwenza ifilimu ukuphucula ukuxhathisa kwamanzi kwisamente kunye nodaka. Inokusetyenziswa kwakhona njenge-colloid ekhuselayo yokunciphisa ukunyanzeliswa komphezulu wesamente kunye nodaka kunye nokuphucula ukusebenza kwabo. Okokugqibela, i-HPMC ingasetyenziswa njenge arhente yokuxhoma ukuphucula ukunqunyanyiswa kwesamente kunye nemixube yodaka.

I-HPMC lulongezo olusebenzayo noluguquguqukayo lwezicelo zokwakha. Inokuphucula ukusebenza kwesamente nodaka, inciphise imfuno yazo yamanzi, iphucule ukuncamathela kwazo kwi-substrates, kwaye iphucule ukuxhathisa kwamanzi. Ukongezelela, inokusetyenziswa njenge-emulsifier, i-agent-forming agent, i-colloid yokukhusela, kunye ne-agent yokumisa. I-HPMC sisongezo esinoqoqosho nesikhuselekileyo esinokusetyenziselwa ukuphucula ukusebenza kwesamente nemixube yodaka.