IHydroxypropylmethylcellulose (HPMC) yipolymer esetyenziswa kakhulu kumashishini ahlukeneyo. I-ether ye-cellulose engekho i-ionic, i-soluble yamanzi, i-non-toxic kunye ne-non-irritation. I-HPMC iqhele ukusetyenziswa njenge-thickener, binder kunye ne-emulsifier kukutya okuninzi, amayeza kunye neemveliso zokhathalelo lomntu.
Enye yeempawu eziphambili ze-HPMC bubunzima bayo bemolekyuli, echaphazela i-viscosity yayo. I-Viscosity ngumlinganiselo wokuxhathisa kolwelo ukuhamba. Ukuphakama kwe-viscosity, kokukhona ulwelo luyaqina. Ubunzima bemolekyuli ngumlinganiselo wobungakanani bemolekyuli, ehambelana ngqo ne-viscosity ye-HPMC.
I-HPMC ifumaneka kumabakala ahlukeneyo ngokobunzima bayo bemolekyuli. I-viscosity ye-HPMC iyanda kunye nobunzima be-molecular. I-viscosity ye-HPMC iphinde iphenjelelwe yi-degree of substitution (DS), inani le-hydroxypropyl kunye namaqela e-methyl aqhotyoshelwe kwi-cellulose backbone. Okukhona iphezulu i-DS, kokukhona iphezulu ubunzima bemolekyuli kunye ne-viscosity ye-HPMC.
I-viscosity ye-HPMC iphinda ichaphazeleke yi-polymer concentration kwisisombululo. Kwiindawo eziphantsi, iintambo ze-polymer zihlakazwa kwaye isisombululo se-viscosity siphantsi. Njengoko ugxininiso lukhula, amakhonkco e-polymer aqala ukugqithisa kwaye adibanise, okukhokelela ekunyuseni kwe-viscosity. Ugxininiso apho amakhonkco epolymer aqala ukuwelana khona kuthiwa luxinaniso oluthe kratya.
Ubunzima bemolekyuli kunye ne-viscosity ye-HPMC yimilinganiselo ebalulekileyo kwiindlela ezininzi zemveliso. Kwishishini lokutya, i-HPMC isetyenziswa njenge-thickener yeesosi, izinxibo kunye neempahla ezibhakiweyo. Ubunzima obufanelekileyo bemolekyuli kunye ne-viscosity ye-HPMC iqinisekisa ukuthungwa okufunwayo kunye nomlomo wemveliso yokugqibela.
Kumashishini axuba amayeza, i-HPMC isetyenziswa njengesibophelelo kwiipilisi kunye neepilisi. Ubunzima bemolekyuli kunye ne-viscosity ye-HPMC imisela amandla ethebhulethi kunye nokukwazi kwayo ukunyibilika kwindlela yesisu.
Kwishishini lokhathalelo lomntu, i-HPMC isetyenziswa njenge-thickener kunye ne-emulsifier kwiishampu, izinto zokuthambisa kunye neekhrimu. Ubunzima bemolekyuli obufanelekileyo kunye ne-viscosity ye-HPMC iqinisekisa ukuhambelana okufanelekileyo kunye nokuzinza kwemveliso.
Ukushwankathela, ubunzima bemolekyuli kunye ne-viscosity ye-HPMC ziiparamitha ezibalulekileyo ezichaphazela ukusebenza kwayo kumashishini ahlukeneyo. Ukuqonda ubudlelwane phakathi kwezi parameters kubalulekile ekuqulunqeni iimveliso ezihlangabezana neenkcukacha ezinqwenelekayo. I-HPMC yipolymer eguquguqukayo nexabisekileyo enceda ukuphucula umgangatho kunye nokusebenza kweemveliso ezininzi.
Ixesha lokuposa: Jul-18-2023