ethula:
IHydroxypropylmethylcellulose (HPMC) iyinhlanganisela enemisebenzi eminingi esetshenziswa kabanzi ezimbonini eziningi ngenxa yezakhiwo zayo ezizuzisayo ezahlukahlukene. Iphuma ku-cellulose, etholakala ngokushintsha amakhemikhali i-cellulose nge-propylene oxide ne-methyl chloride. I-HPMC isetshenziswa kakhulu embonini yemithi, yokudla, yokwakha kanye nezimonyo ngenxa yezakhiwo zayo ezinhle kakhulu zokugcina amanzi. Leli phepha lihlinzeka ngokuhlaziywa okujulile kokusebenza kokugcinwa kwamanzi kwe-HPMC.
Ukusebenza kokugcinwa kwamanzi kwe-HPMC:
Izakhiwo zokugcina amanzi ze-HPMC ngesinye sezizathu ezibaluleke kakhulu zokusetshenziswa kwayo kabanzi ezimbonini ezimbalwa. I-HPMC inomthamo ophezulu wokugcina amanzi ngenxa yemvelo yayo eyi-hydrophilic. Imunca amanzi futhi ikhukhumale ngokuphindwe kaningana ubukhulu bayo basekuqaleni, iyenze ibe inqolobane enhle kakhulu yamanzi. Izakhiwo zokugcina amanzi ze-HPMC zincike ezintweni ezimbalwa njengezinga lokushintsha, i-viscosity yesisombululo se-HPMC, kanye nohlobo lwesincibilikisi esisetshenzisiwe.
Izinga lokushintsha:
I-degree of substitution (DS) ye-HPMC iyisici esibalulekile esithinta ukusebenza kwayo kokugcinwa kwamanzi. I-DS ye-HPMC ibhekisela enanini lamaqembu e-hydroxyl athathelwe indawo yi-hydroxypropyl namaqembu e-methyl ku-molecule ye-cellulose. I-HPMC enezinga eliphezulu lokushintsha inamandla okugcina amanzi aphezulu kune-HPMC enezinga eliphansi lokushintsha. I-DS ephakeme ye-HPMC inyusa i-hydrophilicity ye-molecule, okuholela ekugcinweni kwamanzi okungcono.
I-Viscosity yesisombululo se-HPMC:
I-viscosity yesixazululo se-HPMC ingesinye isici esithinta ukusebenza kokugcinwa kwamanzi kwe-HPMC. I-viscosity yesisombululo se-HPMC iyanda ngokwanda kokugxila kwe-HPMC kusincibilikisi. Ngenxa yokuba khona kwama-molecule e-HPMC amaningi kusincibilikisi, ukuphakama kwe-viscosity yesisombululo se-HPMC, kuba ngcono umthamo wokugcina amanzi. Izisombululo ze-HPMC ezine-viscosity ephezulu zakha isakhiwo esifana nejeli esibamba ama-molecule amanzi futhi siwavimbele ukuthi angahwamuki.
Uhlobo lwe-solvent olusetshenzisiwe:
Uhlobo lwe-solvent esetshenziselwa ukulungisa isisombululo se-HPMC lungaphinda luthinte izakhiwo zalo zokugcinwa kwamanzi. I-HPMC iyancibilika emanzini nasezincibilikisini ezihlukahlukene eziphilayo, njengotshwala, ama-ester, nama-ketone. I-solvent esetshenziselwa ukulungisa isisombululo se-HPMC singathinta ukuziphatha kokuvuvukala kwe-molecule. I-HPMC ikhukhumala kakhulu emanzini futhi imunca amanzi amaningi kune-HPMC kuzincibilikisi zemvelo. Uma kuqhathaniswa nezixazululo ze-organic solvent, i-HPMC inezinto ezingcono zokugcina amanzi ezixazululweni ezinamanzi.
Ukusetshenziswa kwe-HPMC ezimbonini ezahlukahlukene:
Ngenxa yezindawo zayo ezinhle kakhulu zokugcina amanzi, i-HPMC isetshenziswa kabanzi ezimbonini eziningana ezifana nemithi, ukudla, ukwakhiwa kanye nezimonyo.
Imboni yezemithi:
Embonini yezemithi, i-HPMC ivame ukusetshenziswa njenge-binder, disintegrant kanye ne-ejenti yokuhlanganisa. Isetshenziswa njengesibophezelo ekulungiseleleni ithebhulethi ukuze kuhlanganiswe izithako ndawonye. Njengesibulala-magciwane, i-HPMC isiza ukuhlukanisa ithebhulethi ibe yizinhlayiya ezincane esiswini, okuthuthukisa ukumuncwa kwezidakamizwa. I-HPMC isetshenziswa njengesembozo ukuze kuvikelwe umuthi emswakama kanye nokulawula ukukhululwa kwezidakamizwa.
imboni yokudla:
Embonini yokudla, i-HPMC isetshenziswa njenge-emulsifier, i-stabilizer kanye ne-thickener. Isetshenziselwa emulsify amafutha kanye noketshezi olusekelwe emanzini, ukusimamisa ukudla, futhi ukujiya amasoso kanye gravies. I-HPMC isetshenziswa futhi njengesigcwalisi ukwengeza inqwaba ekudleni.
Imboni yezokwakha:
Embonini yezokwakha, i-HPMC ijwayele ukusetshenziswa ezintweni ezisekelwe kusimende ezifana nodaka nokhonkolo. Isetshenziswa njenge-ejenti yokugcina amanzi ukuvimbela ukuhwamuka kwamanzi engxubeni kasimende. I-HPMC ingaphinde ithuthukise ukusebenza kwengxube kasimende futhi inciphise ukuqhekeka kwezinto.
Imboni yezimonyo:
Embonini yezimonyo, i-HPMC isetshenziswa njenge-thickener, emulsifier kanye ne-conditioning agent. Isetshenziselwa ukujiya ama-lotions nama-creams, i-emulsify amafutha nezithako ezisekelwe emanzini, kanye nezinwele ezisezingeni.
Ekuphetheni:
Sengiphetha, indawo yokugcina amanzi ye-HPMC ingenye yezindawo zayo ezibaluleke kakhulu nezinenzuzo. I-HPMC inomthamo ophezulu wokugcina amanzi ngenxa yemvelo yayo eyi-hydrophilic, eyivumela ukuthi imunce futhi igcine amanzi futhi iwavimbele ukuthi angahwamuki. Izinga lokufaka esikhundleni, i-viscosity yesisombululo kanye nohlobo lwe-solvent esetshenzisiwe yizici ezibalulekile ezithinta ukusebenza kokugcinwa kwamanzi kwe-HPMC. I-HPMC isetshenziswa kakhulu ezimbonini ezehlukene ezifana nemithi, ukudla, ezokwakha kanye nezimonyo ngenxa yezindawo zayo ezinhle kakhulu zokugcina amanzi.
Isikhathi sokuthumela: Jul-19-2023