I-HPMC, eyaziwa nangokuthi i-hydroxypropyl methylcellulose, i-polymer encibilika emanzini esetshenziswa kabanzi ezimbonini zezimonyo, ezemithi nezokudla. I-polymer isuselwa ku-cellulose, into yemvelo etholakala ezitshalweni. I-HPMC iyi-thickener enhle kakhulu esetshenziswa kabanzi ukukhulisa i-viscosity yezixazululo ezahlukahlukene. Amandla ayo okukhiqiza ama-gel thixotropic nawo akwenza kube ukukhetha okudumile ezinhlelweni eziningi.
Ukuqina kwezakhiwo ze-HPMC
Izakhiwo ezijiyayo ze-HPMC zaziwa kahle embonini. I-HPMC ingakhuphula i-viscosity yesisombululo ngokwenza inethiwekhi yejeli ebamba ama-molecule amanzi. Izinhlayiya ze-HPMC zakha inethiwekhi yejeli lapho ifakwe emanzini futhi idonsana ngamabhondi e-hydrogen. Inethiwekhi idala i-matrix enezinhlangothi ezintathu eyandisa i-viscosity yesixazululo.
Enye yezinzuzo eziyinhloko zokusebenzisa i-HPMC njenge-thickener ukuthi ingajiya isixazululo ngaphandle kokuphazamisa ukucaca noma umbala wayo. I-HPMC iyi-polymer engeyona i-ionic, okusho ukuthi ayikhokhisi esixazululweni. Lokhu kuyenza ilungele ukusetshenziswa ekwakhiweni okucacile noma okusobala.
Enye inzuzo ye-HPMC ukuthi ingajiya izixazululo ezindaweni eziphansi. Lokhu kusho ukuthi inani elincane kuphela le-HPMC elidingekayo ukuze kuzuzwe i-viscosity oyifunayo. Lokhu kungonga izindleko kubakhiqizi futhi kunikeze amakhasimende ngemikhiqizo eyongayo.
Thixotropy of HPMC
Thixotropy iyimpahla yokuncipha kwe-viscosity uma ingaphansi kwengcindezi yokugunda futhi ibuyele ku-viscosity yayo yasekuqaleni lapho ingcindezi isusiwe. I-HPMC iyinto ye-thixotropic, okusho ukuthi isakazeka noma ithulule kalula ngaphansi kwengcindezi yokugunda. Nokho, uma ukucindezeleka sekususiwe, kubuyela ekunamatheleni futhi kushube futhi.
Izakhiwo ze-thixotropic ze-HPMC ziyenza ilungele izinhlelo zokusebenza eziningi. Isibonelo, ivame ukusetshenziswa kupende, njengejazi eliwugqinsi endaweni. Izakhiwo ze-thixotropic ze-HPMC ziqinisekisa ukuthi ukugqoka kuhlala kungaphezulu ngaphandle kokugoqa noma ukugijima. I-HPMC iphinde isetshenziswe embonini yokudla njengendlela yokuqinisa amasoso nezingubo zokugqoka. Izakhiwo ze-thixotropic ze-HPMC ziqinisekisa ukuthi amasoso noma okokugqoka akuconsi ezinkeni noma kumapuleti, kodwa kunalokho kuhlala kuminyene futhi engaguquki.
I-HPMC iyi-polymer eguquguqukayo enezicelo eziningi ezimbonini ezahlukahlukene. Izakhiwo zayo zokuqina kanye nezakhiwo ze-thixotropic zikwenza kube kuhle ekwenziweni kwezimonyo, ezemithi nokudla. I-HPMC iyi-thickener enhle kakhulu, ekhulisa i-viscosity yesisombululo ngaphandle kokuphazamisa ukucaca noma umbala wayo. Izakhiwo zayo ze-thixotropic ziqinisekisa ukuthi isisombululo asibi kakhulu noma sincane kakhulu, kuye ngokuthi isicelo. I-HPMC iyisithako esibalulekile emikhiqizweni eminingi, futhi izinzuzo zayo eziningi ziyenza ibe ukukhetha okudumile kubakhiqizi namakhasimende.
Isikhathi sokuthumela: Aug-25-2023