I-HydroxyPOpyTethylcelcelcelcelcelcelce (i-HPMC) i-polymer eselunxwemeni emanzini esetyenziswa ngokubanzi kumashishini ahlukeneyo njengamayeza, ukutya, amayeza, kunye nolwakhiwo. I-HPMC yaziwa ngamaPropoti ayo enzonzobila, esenza isithako esifanelekileyo kwizicelo ezininzi. Kweli nqaku, sihlolisisa izinto ezichaphazela ukugcinwa kwamanzi kwe-HPMC kunye nendlela yokuphucula ezi zinto ukwandisa ukusebenza kwabo.
I-1. Ubunzima bemolekyuli
Ubunzima be-MPMC budlala indima ebalulekileyo kwizindlu zabo zokugcina amanzi. Ukuphakama kwesisindo semolekyuli, ngaphezulu komthamo wokugcina amanzi. Oku kungenxa yokuba ubunzima bemolekyuli ephezulu ye-HPMC inophawu oluphezulu, olunceda ukuba lube le ifilimu enkulu phezu komgangatho wokuthathwa komhlaba, ngaloo ndlela kuncitshiswa ukuphulukana kwamanzi. Ke ngoko, ngenxa yezicelo apho ukugcinwa kwamanzi kubalulekile, kuyacetyiswa ubunzima be-phudmc ephezulu.
2. Inqanaba lokufaka
Inqanaba lokufakwa endaweni (DS) libhekisa kwinani le-hydroxypropy kunye namaqela e-methyl kwi-HPMC Muleccule. Ukuphakama kwe-DS, kokukhona ngaphezulu komda wokugcina amanzi. Kungenxa yokuba amaqela e-hydropyl kunye namaqela e-methyl yonyusa isotha ye-HPMC emanzini kwaye aphucule amandla akhe okwenza ijezi-ngokungathi yi-gesnetence efana ne-molekstic. Ke ngoko, kwizicelo apho ukugcinwa kwamanzi yinto ebaluleke kakhulu, i-HPMC enenqanaba eliphezulu lokufaka endaweni iyacetyiswa.
I-3. Ubushushu kunye nokufuma
Ubushushu kunye nokufuma bubalulekile kwizinto ezichaphazela ukugcinwa kwamanzi kwe-HPMC. Ubushushu obuphezulu kunye nokufuma okuphantsi kuya kubangela ifilimu ye-HPMC yokuphuma ngokukhawuleza, okukhokelela ekugcinweni kwamanzi aphantsi. Ke ngoko, kuyacetyiswa ukugcina i-HPMC kwindawo epholileyo neyomileyo ukugcina iipropathi zayo zokugcina amanzi.
I-4. Ixabiso le-pH
I-PH yomhlaba idlala indima ebalulekileyo ekugcinweni kwamanzi i-HPMC. I-HPMC isebenza kakhulu ekungathathi cala kwimimandla ye-acidic kancinci. Xa i-PH ye-Matrix iphezulu, ukuvela kwe-HPMC kungancitshiswa kwaye umphumo wokugcinwa kwamanzi uya kuncitshiswa. Ke ngoko, kuyacetyiswa ukuba kuvavanye i-PH yomhlaba kwaye ihlengahlengise kuluhlu olufanelekileyo lokugcinwa kwamanzi ngendlela efanelekileyo.
5. Uxinzelelo
Uxinzelelo lwe-HPMC ikwachaphazela iipropathi zayo zokugcina amanzi. Ngokubanzi, ukugxininiswa okuphezulu kwe-HPMC, kungcono ukugcinwa kwamanzi. Nangona kunjalo, kwiindlela eziphezulu kakhulu, i-viscosity ye-HPMC inokuba iphezulu kakhulu, yenze kube nzima ukufaka kwaye isasazeke ngokulinganayo. Ke ngoko, kuyacetyiswa ukuba kuvavanye ukugxininiswa kwe-HPMC ngesicelo ngasinye ukuze kufezekiswe ukugcinwa kwamanzi.
Ukuqukumbela, i-HPMC iye yaba yinto ebalulekileyo ngenxa yepropathi ebalaseleyo yokugcina amanzi kwaye idlala indima ephambili kumashishini ahlukeneyo. Izinto ezichaphazela ukugcinwa kwawo amanzi, ezinjengokuziphatha okungafunekiyo, isidanga sokufakwa endaweni, ubushushu kunye nokufuma, i-PH kunye nokugxininiswa, kunokuphelelwa kukwandisa ukusebenza kwawo. Ngokuqonda ezi zinto, sinokuqinisekisa ukuba i-HPMScs ifikelela ngokupheleleyo, ivumela ukudalwa kweemveliso ezilungiselelwe amaziko abo okugcina amanzi.
IXESHA LOKUQALA: UJul-04-2023