Yazisa:
IHydroxypropylmethylcellulose (HPMC) yipolymer enyibilikayo emanzini eqhele ukusetyenziswa kwimizi-mveliso eyahlukeneyo kunye nezicelo zamayeza ngenxa yobuchule bayo bokwenza ifilimu, ukubophelela kunye nokujiya. Phakathi kwezicelo zayo ezininzi, i-HPMC isetyenziswa kakhulu kushishino lokwakha ngenxa yesakhono sayo sokugcina amanzi.
Ukugcinwa kwamanzi kuyipropati ebalulekileyo emisela ukusebenza kwezinto zokwakha ezifana nodaka, i-samente kunye nekhonkrithi. Xa i-HPMC yongezwa kwezi zixhobo, inokwandisa kakhulu umthamo wabo wokugcinwa kwamanzi, okukhokelela ekuqhubeni ngcono, ukunciphisa ukucutheka kunye nokunyuka kwamandla.
Nangona kunjalo, izinto ezininzi zinokuchaphazela iipropathi zokugcinwa kwamanzi ze-HPMC. Eli nqaku liphonononga ezi zinto kunye neempembelelo zabo ekusebenzeni kokugcinwa kwamanzi kwe-HPMC.
Izinto ezichaphazela ugcino lwamanzi lwe-HPMC:
1. Ubunzima bemolekyuli:
Ubunzima bemolekyuli ye-HPMC ichaphazela kakhulu iipropati zayo zokugcina amanzi. Ubunzima bemolekyuli obuphezulu HPMCs ngokubanzi zibonisa ugcino lwamanzi olungcono ngenxa yeempawu ezingcono zokujiya.
Ubunzima bemolekyuli ye-HPMC inokulawulwa ngexesha lenkqubo yokuvelisa, kwaye abavelisi banokuvelisa amabakala ahlukeneyo e-HPMC enobunzima obuhlukeneyo bemolekyuli ukuhlangabezana neemfuno ezithile zesicelo.
2. Ubushushu:
Ubushushu ngomnye umba ophambili ochaphazela amandla okugcina amanzi e-HPMC. Kumaqondo obushushu aphantsi, amandla okugcina amanzi e-HPMC ayehla, nto leyo ekhokelela ekuqhubeni kakubi kunye nokunyuka kokucutheka.
Kwelinye icala, i-HPMC ibonisa ugcino lwamanzi olungcono kumaqondo obushushu aphezulu, iwenza alungele ukusetyenziswa kwimozulu eshushu nasehlotyeni.
3. pH:
Ixabiso le-pH yokusingqongileyo apho i-HPMC isetyenziswa khona liya kuchaphazela amandla ayo okugcina amanzi. I-HPMC ibonisa ugcino lwamanzi olungcono kwiindawo ezingathathi hlangothi okanye ezinealkaline pH.
Kwimeko-bume eneasidi, amandla okugcina amanzi e-HPMC ayancipha, okukhokelela kulwakhiwo olulambathayo kunye nokwanda kokucutheka kwezinto zokwakha.
4. Umthamo:
Isixa se-HPMC esongeziweyo kwisixhobo sokwakha sinokuchaphazela kakhulu amandla okugcina amanzi. Elona nani lifanelekileyo le-HPMC lixhomekeke kwisicelo esithile kunye nezinye iipropati eziphathekayo.
Ukugqithiswa kwe-HPMC kuya kubangela ukwanda kwe-viscosity, ukunciphisa ukuqhubekeka kunye nokunyuka kwe-shrinkage. Ngakolunye uhlangothi, inani elingonelanga le-HPMC likhokelela ekugcinweni kwamanzi okungahambi kakuhle, okukhokelela ekunciphiseni amandla kunye nokunyuka kokuqhekeka.
5. Ixesha lokuvuselela:
Ixesha lokuxuba le-HPMC kunye nezinto zokwakha nazo zichaphazela amandla okugcina amanzi. Ixesha elaneleyo lokuxuba linokuqinisekisa ukusabalalisa okufanayo kweengqungquthela ze-HPMC kunye nokugcinwa kwamanzi okungcono.
Ixesha elingonelanga lokuxuba lingakhokelela ekuhanjisweni kwe-particle ye-HPMC embi, enokukhokelela ekunciphiseni ukugcinwa kwamanzi kunye neminye imiba yokusebenza.
6. Uhlobo lwemathiriyeli yokwakha:
Uhlobo lwemathiriyeli yokwakha esetyenziswa kwi-HPMC ikwachaphazela isakhono sayo sokubamba amanzi. Izinto ezahlukeneyo zifuna amanqanaba ahlukeneyo okugcinwa kwamanzi, kwaye i-HPMC inokulungiswa ukuhlangabezana neemfuno ezithile zezinto.
Umzekelo, udaka lufuna umthamo ophezulu wokugcina amanzi, ngelixa ikhonkrithi ifuna umthamo ophantsi wokugcina amanzi. Ke ngoko, amabanga ahlukeneyo e-HPMC enzelwe izixhobo zokwakha ezahlukeneyo.
ukuququmbela:
Isishwankathelo, ukugcinwa kwamanzi yipropati ephambili emisela ukusebenza kwezinto zokwakha. I-HPMC yi-arhente egqwesileyo yokugcina amanzi, enokuphucula amandla okugcina amanzi kwisamente, udaka, ikhonkrithi kunye nezinye izinto zokwakha.
Nangona kunjalo, izinto ezahlukeneyo, ezifana nobunzima bemolekyuli, ubushushu, i-pH, idosi, ixesha lokuxuba, kunye nohlobo lwezinto zokwakha ezisetyenziswa kwi-HPMC, zinokuchaphazela iipropati zokugcina amanzi.
Abavelisi kufuneka baqwalasele le miba kwaye balungelelanise iipropati kunye nesixa se-HPMC kwizicelo ezithile zokwakha ukuphumeza ugcino lwamanzi olugqwesileyo kunye nezinye izibonelelo zokusebenza.
Ixesha lokuposa: Aug-08-2023