Zithini iziphumo ze-Odor kwi-hydroxypropyl methylcelcelce
I-Synthesis ye-HydroxyPOpyl Methylcelcelgalose: Ukunyanga i-cotton ye-cottose nge-LYE nge-35 ° Cubilase iyure, ukuze i-CLYELOSE, kunye nenqanaba le-polymenase ye-Alkali efunyenweyo ngaphakathi. Beka i-alkali fiber kwi-etherle, yongeza i-propylene oxide kunye ne-methyl chloride ngokulandelelana, kwaye uqinisekisile kwi-50-80 ° C kwiiyure ezi-5, olona xinzelelo luphezulu malunga ne-1.8MPA. Emva koko yongeza isixa esifanelekileyo se-hydrochloric acid kunye ne-oxcalic acid ukuya kumanzi ashushu kwi-90 ° C ukuhlamba izinto zokwandisa ivolumu. Ukupheliswa kwehydifuge. Hlamba ngamanzi kude kube cala kwezopolitiko. Xa umswakama wempungutye wezinto ezibonakalayo ungaphantsi kwe-60%, yomisa ngomthi womoya oshushu nge-130 ° C de umxholo wokufuma ungaphantsi kwe-5%.
I-HPMC eveliswa yindlela ye-Solvent isebenzisa i-toluene kunye ne-isopropanol njengamanyibilikisi. Ukuba ukuhlamba akulunganga, ivumba elityhafileyo liya kuhlala lihleli. Okwangoku, umgangatho we-Hydropyl ye-Hydylcelcelgalose HPMC yahluka kakhulu, kwaye amaxabiso ayahluka kakhulu, esenza kube nzima kubathengi ukuba benze ukhetho olufanelekileyo. Le yingxaki yenkqubo yokuhlamba, ayichaphazeli ukusetyenziswa kwaye akukho ngxaki, i-HPMC ecocekileyo ayifanele ivule i-ammonia, isitatshi kunye notywala; I-HPMCRECTIONCTE i-HPMC inokuchitha zonke iintlobo zevumba, nokuba ayinantsingiselo, iya kuziva inzima. Nangona kunjalo, i-hydroxypropyl methylcelcelsulose iveliswe ngabavelisi abaninzi banevumba elinamandla kakhulu kunye nephunga le-pungent. Ngokuqinisekileyo umgangatho awukwenzi umtshato.
I-Hypromellose ifunyenwe ngokungena kwikotoni ecocekileyo kunye nolwelo olunqabileyo ukufumana i-alkaline ye-alkaline, emva koko yongeza i-Solkaline, emva koko yongeza i-Solkali, i-Eopropanol, i-Eopropanol, ukumisa, ukutshiswa, ukutyhoboza, ukutyhoboza, ukutyhoboza, ukutyhoboza, ukutyhoboza, ukutyhoboza. Ewe, kuya kubakho ivumba, abasebenzisi banokuyisebenzisa ngokuzithemba.
IXESHA LOKUQALA: IJuni-09-2023