Isici sokuqala esithinta ukugcinwa kwamanzi kuIHydroxypropyl methylcellulose(HPMC)imikhiqizo yizinga lokushintshwa (DS). I-DS ibhekisela enanini lamaqembu e-hydroxypropyl kanye ne-methyl anamathiselwe kuyunithi ngayinye ye-cellulose. Ngokuvamile, ukuphakama kwe-DS, kuba ngcono izindawo zokugcina amanzi ze-HPMC. Lokhu kungenxa yokuthi i-DS eyengeziwe iholela emaqenjini amaningi e-hydrophilic kumgogodla we-cellulose, okuvumela ukusebenzisana okunamandla nama-molecule amanzi kanye namandla okubamba amanzi athuthukisiwe.
Esinye isici esibalulekile esinomthelela ekugcinweni kwamanzi isisindo samangqamuzana e-HPMC. Isisindo samangqamuzana sithinta i-viscosity yezixazululo ze-HPMC, futhi ama-polymer esisindo samangqamuzana aphezulu ngokuvamile abonisa izakhiwo ezingcono zokugcina amanzi. Ubukhulu obukhulu bala ma-polymers budala isakhiwo senethiwekhi esibanzi, okwandisa ukubopha ngama-molecule amanzi futhi ngenxa yalokho kuthuthukisa ukugcinwa kwamanzi. Kodwa-ke, kubalulekile ukuthola ibhalansi, njengoba isisindo samangqamuzana esiphezulu ngokweqile singaholela ekwandeni kwe-viscosity nokuncipha kokusebenza, okwenza kube nzima ukuphatha noma ukusebenzisa imikhiqizo ye-HPMC ezinhlelweni ezithile.
Ngaphezu kwalokho, ukugxila kwe-HPMC ekwakhiweni nakho kudlala indima ebalulekile ekugcineni amanzi. Ukugxila okuphezulu kwe-HPMC ngokuvamile kuholela ezintweni ezingcono zokugcina amanzi. Lokhu kungenxa yokuthi ukugxila okuphezulu kwandisa inani lezindawo ezinama-hydrophilic ezitholakalayo zokumuncwa kwamanzi, okuholela ekuthuthukisweni komthamo wokubamba amanzi. Kodwa-ke, ukugxila okuphezulu ngokweqile kungaholela ekwandeni kwe-viscosity, okwenza ukwakheka kube nzima kakhulu ukuphatha nokusebenzisa. Kubalulekile ukuthola ukugxiliswa okuphelele kwe-HPMC ngokusekelwe kuhlelo lokusebenza oluthile ukuze kuzuzwe izindawo zokugcina amanzi ezifiselekayo ngaphandle kokubeka engcupheni ukusebenza komkhiqizo.
Ngaphezu kwalezi zici eziyinhloko, ezinye izici ezihlukahlukene zingathonya izici zokugcinwa kwamanziI-HPMCimikhiqizo. Uhlobo nenani lezithasiselo ezisetshenziswe ekwakhiweni kungaba nomthelela omkhulu. Isibonelo, ukungezwa kwama-plasticizers noma ama-rheology modifiers kungathuthukisa ukugcinwa kwamanzi ngokushintsha ukuhlangana kwe-HPMC nokusebenzisana nama-molecule amanzi. Izici zemvelo ezifana nezinga lokushisa nomswakama zingaphazamisa nokugcinwa kwamanzi, njengoba le mingcele ithonya izinga lokuhwamuka nokumuncwa kwamanzi. I-substrate noma izakhiwo ezingaphezulu zingaba nomthelela nakakhulu ekugcinweni kwamanzi, njengoba umehluko ku-porosity noma i-hydrophilicity kungase kuthinte ikhono le-substrate lokumunca nokugcina amanzi.
Izakhiwo zokugcina amanzi zemikhiqizo ye-HPMC zithonywa izici ezihlukahlukene, okuhlanganisa izinga lokushintsha, isisindo samangqamuzana, ukugxilisa ingqondo, izithasiselo, izici zemvelo, kanye nezakhiwo ze-substrate. Ukuqonda lezi zici kubalulekile ekwakheniImikhiqizo esekwe ku-HPMCkwezinhlelo zokusebenza ezahlukene. Ngokulungiselela lezi zici, abakhiqizi bangathuthukisa izindawo zokugcina amanzi ze-HPMC futhi baqinisekise ukusebenza kahle kwayo ezimbonini ezifana nezamakhemisi, ezokwakha, nokunakekela komuntu siqu. Ucwaningo olwengeziwe nentuthuko kulo mkhakha luzoqhubeka nokwandisa ukuqonda kwethu izici ezithonya ukugcinwa kwamanzi emikhiqizweni ye-HPMC futhi kunikeze amandla ukuthuthukiswa kokubunjwa okusebenza kahle nakakhulu.
Isikhathi sokuthumela: Nov-02-2023