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 kwamapulasitiki noma izilungisi ze-rheology 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.Ngokwenza kahle 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