Hydroxypropyl methylcellulose (sunan INN: Hypromellose), wanda aka sauƙaƙe a matsayin hypromellose (hydroxypropyl methylcellulose, an taƙaita shi kamar hakaHPMC), nau'in ethers ne na gauraye na cellulose nonionic. Polymer ne mai kama da na roba, mara aiki, mai kama da viscoelastic wanda aka saba amfani da shi azaman mai shafawa a fannin ido, ko kuma azaman mai taimako ko mai taimako a cikin magunguna na baki, kuma ana samunsa a cikin samfuran kasuwanci daban-daban.
A matsayin ƙarin abinci, hypromellose na iya taka rawa kamar haka: emulsifier, mai kauri, wakili mai dakatarwa da madadin gelatin na dabbobi. Lambarsa (E-code) a cikin Codex Alimentarius ita ce E464.
Kayayyakin sinadarai:
Samfurin da aka gama nahydroxypropyl methylcelluloseFarin foda ne ko kuma fari mai laushi mai laushi, kuma girman barbashi yana ratsa ta cikin sieve mai raga 80. Rabon abun ciki na methoxyl da abun ciki na hydroxypropyl na samfurin da aka gama ya bambanta, kuma danko ya bambanta, don haka ya zama nau'ikan iri-iri tare da ayyuka daban-daban. Yana da halayen narkewa a cikin ruwan sanyi kuma ba ya narkewa a cikin ruwan zafi kamar methyl cellulose, kuma narkewarsa a cikin abubuwan narkewa na halitta ya fi na ruwa. Ana iya narkewa a cikin methanol da ethanol mai hana ruwa, kuma ana iya narkewa a cikin hydrocarbons masu chlorine kamar dichloro methane, trichloroethane, da abubuwan narkewa na halitta kamar acetone, isopropanol, da diacetone alcohol. Lokacin da aka narke a cikin ruwa, zai haɗu da ƙwayoyin ruwa don samar da colloid. Yana da daidaito ga acid da alkali, kuma ba ya shafar pH = 2 ~ 12. Hypromellose, kodayake ba shi da guba, yana iya kama wuta kuma yana yin martani mai ƙarfi tare da masu hana oxidation.
Dankowar samfuran HPMC yana ƙaruwa tare da ƙaruwar yawan sinadarin da nauyin ƙwayoyin halitta, kuma lokacin da zafin ya tashi, dankowar sa ta fara raguwa. Idan ya kai wani yanayi na zafi, dankowar ta tashi kwatsam kuma jan ƙarfe ya faru. tsayin ruwan da ke cikinsa yana da ƙarfi a zafin ɗaki, sai dai enzymes na iya lalata shi, kuma dankowar sa gabaɗaya ba ta da wani abu na lalatawa. Yana da kaddarorin jan ƙarfe na musamman na thermal, kyawawan halayen samar da fim da kuma aikin saman.
Yin:
Bayan an yi wa cellulose magani da alkali, anion na alkoxy da aka samar ta hanyar cire protonation na rukunin hydroxyl zai iya ƙara propylene oxide don samar da hydroxypropyl cellulose ether; kuma yana iya haɗuwa da methyl chloride don samar da methyl cellulose ether. Ana samar da Hydroxypropyl methylcellulose lokacin da aka gudanar da duka halayen a lokaci guda.
Amfani da:
Amfani da hydroxypropyl methylcellulose yayi kama da na sauran cellulose ethers. Ana amfani da shi galibi azaman mai wargazawa, mai dakatarwa, mai kauri, mai emulsifier, mai daidaita abubuwa da mannewa a fannoni daban-daban. Ya fi sauran cellulose ethers kyau dangane da narkewa, wargazawa, bayyanawa da juriya ga enzyme.
A masana'antar abinci da magunguna, ana amfani da shi azaman ƙari. Ana amfani da shi azaman manne, mai kauri, mai wargazawa, mai narkewa, mai daidaita yanayi da kuma mai fitar da iskar shaka. Ba shi da guba, babu wani sinadari mai gina jiki, kuma babu wani canji a cikin metabolism.
Bugu da ƙari,HPMCyana da aikace-aikace a cikin polymerization na resin roba, petrochemicals, yumbu, yin takarda, fata, kayan kwalliya, shafi, kayan gini da faranti na bugawa masu sauƙin ɗaukar hoto.
Lokacin Saƙo: Afrilu-25-2024