Hydroxypropyl methylcellulose (sunan INN: Hypromellulose), kuma an rage shi da hydroxypropyl methylcellulose (HPMC), iri-iri ne na ethers da ba na ionic cellulose ba.

Hydroxypropyl methylcellulose(sunan INN:Hypromellulose), kuma a takaice kamarhydroxypropyl methylcellulose (HPMC), iri-iri ne na ethers da ba na ionic cellulose ba. Simintin roba ne, mara aiki, polymer viscoelastic wanda aka saba amfani dashi azaman mai mai a cikin ilimin ido, ko azaman ƙari ko ƙari a cikin maganin baka, wanda akafi samu a cikin nau'ikan kayayyaki daban-daban.

A matsayin ƙari na abinci, hydroxypropyl methylcellulose na iya taka rawa kamar haka: emulsifier, thickener, wakili na dakatarwa, da kuma maye gurbin gelatin dabba. Lambar codex Alimentarius ita ce E464.

sinadaran dukiya

A ƙãre samfurinhydroxypropyl methyl cellulosefarin foda ne ko fari sako-sako da kauri mai kauri, tare da girman barbashi da ke wucewa ta hanyar sieve raga 80. Matsakaicin ma'auni daban-daban na methoxy da abun ciki na hydroxypropyl da danko na ƙãre samfurin sun sa ya zama nau'i iri-iri tare da bambance-bambance a cikin aikin. Yana da sifofin kasancewa mai narkewa a cikin ruwan sanyi kuma ba a iya narkewa a cikin ruwan zafi mai kama da methylcellulose, kuma narkarwarsa a cikin kaushi na kwayoyin halitta ya wuce na ruwa. Yana iya zama mai narkewa a cikin anhydrous methanol da ethanol, kazalika da chlorinated hydrocarbons kamar dichloromethane, trichloroethane, da Organic kaushi kamar acetone, isopropanol, da diacetone barasa. Lokacin da aka narkar da shi cikin ruwa, yana haɗuwa da kwayoyin ruwa don samar da colloid. Yana da kwanciyar hankali ga acid da tushe kuma ba a shafa shi a cikin kewayon pH na 2-12. Ko da yake hydroxypropyl methylcellulose ba mai guba ba ne, yana da ƙonewa kuma yana iya mayar da martani da ƙarfi tare da oxidants [5].

A danko naHPMC samfuroriyana ƙaruwa tare da haɓaka haɓakawa da nauyin kwayoyin halitta. Lokacin da zafin jiki ya tashi, danko ya fara raguwa. Lokacin da zafin jiki ya kai wani zazzabi, danko ya tashi ba zato ba tsammani kuma gel yana faruwa. Zazzaɓin gel na samfuran ƙarancin danko ya fi girma fiye da na samfuran ɗanko. Maganin sa mai ruwa da tsaki yana da karko a zafin jiki kuma gabaɗaya baya da ƙasƙanci na danko sai lalatawar enzymatic. Yana yana da musamman thermal gelling Properties, mai kyau film forming yi da surface aiki.

Shiri

Bayan an bi da cellulose tare da alkali, ana iya ƙara alkoxy anion da hydroxyl deprotonation ya haifar zuwa epoxy propane don samar da shi.hydroxypropyl cellulose ether; Hakanan yana iya haɗawa da methyl chloride don samar da ether methyl cellulose. Lokacin da halayen biyu suka faru a lokaci guda,hydroxypropyl methyl celluloseana samarwa.

manufa

Amfani dahydroxypropyl methyl celluloseyayi kama da saurancellulose ethers, galibi ana amfani dashi azaman mai watsawa, wakili na dakatarwa, thickener, emulsifier, stabilizer, da m a fannoni daban-daban. Ya fi sauran ethers cellulose cikin sharuddan solubility, dispersibility, nuna gaskiya, da juriya na enzyme.

A cikin masana'antar abinci da magunguna, ana amfani da ita azaman ƙari. Saboda abubuwan da ake amfani da shi na mannewa, abubuwan samar da fina-finai, kauri da tarwatsewa a cikin ruwaye, da kuma ikonsa na hana shigar mai da kula da danshi, ana amfani da shi azaman manne, mai kauri, mai watsawa, mai sassauƙa, stabilizer, da emulsifier. Ba shi da guba, ba shi da darajar sinadirai, kuma babu canje-canje na rayuwa.

Bugu da kari,HPMCyana da aikace-aikace a cikin halayen roba na resin polymerization, petrochemicals, yumbu, yin takarda, fata, kayan kwalliya, sutura, kayan gini, da faranti na bugu na hotuna.