Into yokuqala echaphazela ukugcinwa kwamanzi kwiIHydroxypropyl methylcellulose(HPMC)iimveliso liqondo lokuthatha indawo (DS).I-DS ibhekisa kwinani lamaqela e-hydroxypropyl kunye ne-methyl adityaniswe kwiyunithi nganye yeseli.Ngokubanzi, okukhona i-DS iphezulu, kokukhona ingcono ugcino lwamanzi lweempawu ze-HPMC.Oku kungenxa yokuba i-DS eyandisiweyo ikhokelela kumaqela amaninzi e-hydrophilic kumqolo we-cellulose, okuvumela ukusebenzisana okunamandla kunye neemolekyuli zamanzi kunye nokunyusa umthamo wokubamba amanzi.
Enye into ebalulekileyo echaphazela ukugcinwa kwamanzi bubunzima bemolekyuli ye-HPMC.Ubunzima bemolekyuli buchaphazela i-viscosity yezisombululo ze-HPMC, kwaye iipolymers ezinobunzima bemolekyuli ngokuqhelekileyo zibonisa iimpawu ezingcono zokugcina amanzi.Ubukhulu obukhulu bezi polymer budala isakhiwo sothungelwano esibanzi ngakumbi, ukwandisa ukudibanisa kunye neemolekyuli zamanzi kwaye ngenxa yoko kuphuculwe ukugcinwa kwamanzi.Nangona kunjalo, kubalulekile ukufumana ibhalansi, njengoko ubunzima obuphezulu bemolekyuli bunokubangela ukwanda kwe-viscosity kunye nokuncipha kokusebenza, okwenza kube nzima ukuphatha okanye ukusebenzisa iimveliso ze-HPMC kwizicelo ezithile.
Ngaphaya koko, ukuxinana kwe-HPMC kuqulunqo nako kudlala indima ebalulekileyo ekugcineni amanzi.Uxinzelelo oluphezulu lwe-HPMC lukhokelela kwiipropati ezingcono zokugcina amanzi.Oku kungenxa yokuba ugxininiso oluphezulu lunyusa inani leendawo ezine-hydrophilic ezifumanekayo zokufunxa amanzi, okukhokelela ekuphuculweni komthamo wokubamba amanzi.Nangona kunjalo, ukugxila okuphezulu kakhulu kunokukhokelela ekwandeni kwe-viscosity, okwenza ukuqulunqwa kube nzima ukuphatha nokusebenzisa.Kubalulekile ukufumana eyona ingqinisiso ye-HPMC esekwe kwisicelo esithile ukuphumeza iipropati ezifunekayo zokugcina amanzi ngaphandle kokubeka esichengeni ukusebenza kwemveliso.
Ukongeza kwezi zinto ziphambili, ezinye izinto ezahlukeneyo zinokuchaphazela iipropathi zokugcinwa kwamanziHPMCiimveliso.Uhlobo kunye nobungakanani bezongezo ezisetyenzisiweyo ekuqulunqweni zinokuba nempembelelo enkulu.Ngokomzekelo, ukongezwa kweplastiki okanye i-rheology modifiers kunokuphucula ukugcinwa kwamanzi ngokuguqula ukuhambelana kwe-HPMC kunye nokusebenzisana neemolekyuli zamanzi.Imiba yokusingqongileyo efana nobushushu kunye nokufuma kunokuchaphazela ugcino lwamanzi, njengoko ezi parameters ziphembelela isantya somphunga wamanzi kunye nokufunxa.I-substrate okanye iipropathi zomphezulu zinokuchaphazela ngakumbi ukugcinwa kwamanzi, njengoko umahluko kwi-porosity okanye i-hydrophilicity inokuchaphazela amandla e-substrate ukufunxa nokugcina amanzi.
Iipropati zokugcinwa kwamanzi kwiimveliso ze-HPMC ziphenjelelwa yimiba eyahlukeneyo, kubandakanywa iqondo lokutshintshwa, ubunzima be-molecular, i-concentration, i-additives, izinto zokusingqongileyo, kunye neempawu ze-substrate.Ukuqonda le miba kubalulekile ekuqulunqeniiimveliso HPMC-basedkwizicelo ezahlukeneyo.Ngokusebenzisa ezi zinto, abavelisi banokuphucula iipropathi zokugcina amanzi ze-HPMC kwaye baqinisekise ukusebenza kwayo kumashishini afana namayeza, ukwakhiwa, kunye nokhathalelo lomntu.Uphando olungaphaya kunye nophuhliso kulo mmandla luya kuqhubeka ukwandisa ukuqonda kwethu imiba echaphazela ugcino lwamanzi kwiimveliso ze-HPMC kwaye yenze ukuba uphuhliso lwemixube esebenzayo ngakumbi nesebenzayo.
Ixesha lokuposa: Nov-02-2023