IHydroxypropylmethylcellulose (HPMC) sisilulo seselulosi esiqhele ukusetyenziswa kumashishini ahlukeneyo namhlanje. Isetyenziswa kakhulu njenge-thickener, i-adhesive kunye ne-stabilizer kukutya, amayeza kunye namashishini okuthambisa. Ikhethwa ngaphezu kwezinye iinketho kuba kulula ukuyisebenzisa, ikhuselekile kwaye ayinayo ityhefu. Nangona kunjalo, inkalo ebalulekileyo yale khemikhali yinto yothuthu.
Umxholo wothuthu lwe-HPMC yinto ephambili ekuqinisekiseni umgangatho kunye nokucoceka kwayo. Umxholo we-Ash ubhekiselele kwi-mineral kunye ne-inorganic materials ekhoyo kwi-derivative cellulose. Ezi zimbiwa zinokubakho ngexabiso elincinci okanye elikhulu, ngokuxhomekeke kumthombo kunye nomgangatho we-HPMC.
Umxholo wothuthu unokumiselwa ngokutshisa inani elithile le-HPMC kwiqondo lokushisa eliphezulu ukususa zonke izinto eziphilayo, kushiya intsalela ye-inorganic kuphela. Isiqulatho sothuthu se-HPMC kufuneka sibe phakathi koluhlu olwamkelekileyo ukunqanda ukungcoliseka okunokwenzeka kwaye kuqinisekiswe ukuba iimpawu zayo zomzimba nezekhemikhali azichaphazeleki.
Isiqulatho sothuthu esamkelekileyo seHPMC siyahluka ngokweshishini esetyenziswa kulo. Umzekelo, ishishini lokutya linemigaqo engqongqo kumxholo wothuthu ovunyelweyo kwi-HPMC. Isiqulatho sothuthu somgangatho wokutya weHPMC kufuneka sibe ngaphantsi kwe-1%. Ukusetyenziswa komntu kuyo nayiphi na into engaphezulu kwalo mda kubeka impilo emngciphekweni. Ke ngoko, kubalulekile ukuqinisekisa ukuba i-HPMC yebakala lokutya inomxholo ochanekileyo wothuthu.
Ngokunjalo, ishishini lamachiza linemigaqo kumxholo wothuthu lweHPMC. Isiqulatho sothuthu esivumelekileyo kufuneka sibe ngaphantsi kwe-5%. Nayiphi na i-HPMC esetyenziswa kushishino kufuneka ibe yeyobunyulu okanye umgangatho ochanekileyo ukunqanda ungcoliseko.
Abavelisi bezithambiso nabo bafuna i-HPMC ekumgangatho ophezulu kunye nomxholo wothuthu ofanelekileyo. Oku kungenxa yokuba nasiphi na isiqulatho sothuthu olugqithisileyo kwi-HPMC sinokusabela kunye nezinye izithako kwizithambiso, ezibangela iziphumo ezibi emzimbeni kunye nemichiza eluswini.
Isiqulatho sothuthu se-HPMC kufuneka sibe phakathi kwemida eyamkelekileyo kushishino ngalunye olusetyenziswa kulo. Nangona kunjalo, akwanelanga ukugweba umgangatho we-HPMC kuphela ngomxholo wothuthu. Ezinye izinto ezinje nge-viscosity, i-pH kunye nomxholo wokufuma nazo zidlala indima ebalulekileyo ekumiseleni umgangatho wayo uwonke.
I-HPMC enomxholo othuthu oluchanekileyo ineenzuzo ezininzi. Iqinisekisa ukucoceka kwemveliso kunye nomgangatho, kunciphisa umngcipheko wokungcola kunye nokuphucula ukhuseleko lwemveliso. Oku kwenza kube lula ukuba abavelisi bahlangabezane nemigangatho yolawulo kwishishini ngalinye.
Umxholo womlotha we-hydroxypropyl methylcellulose yinto ebalulekileyo yokuqinisekisa umgangatho wemveliso kunye nokhuseleko. Ukuqinisekisa ukuba i-HPMC inothuthu oluchanekileyo kwishishini ngalinye lokusetyenziswa kubalulekile. Abavelisi kufuneka basebenzise i-HPMCs ekumgangatho ophezulu wococeko olufanelekileyo kwaye baqinisekise ukuba bayahlangabezana nemigangatho yoshishino. Ngomxholo wothuthu ochanekileyo, i-HPMC iya kuqhubeka isisithako esibalulekileyo kumashishini ahlukeneyo.
Ixesha lokuposa: Aug-30-2023