Hydroxypropyl methylcellulose (HPMC)Ether ce wacce ba ta ionic ce ta yin amfani da ita a cikin kayan gini, magunguna, abinci, kayan kwalliya da sauran filayen masana'antu. Yana da kyawawan kaddarorin jiki masu yawa, waɗanda ke sa ya yi kyau a aikace-aikace daban-daban.
1. bayyanar da solubility
HPMC yawanci fari ne ko fari, mara wari, mara daɗi kuma mara guba. Ana iya narkar da shi a cikin ruwan sanyi da wasu abubuwan kaushi (kamar gauraye irin su ethanol/water da acetone/water), amma ba ya narkewa a cikin tsantsar ethanol, ether da chloroform. Saboda yanayin da ba na ionic ba, ba za a sha maganin electrolytic a cikin maganin ruwa ba kuma darajar pH ba za ta yi tasiri sosai ba.
2. Dankowa da rheology
HPMC mai ruwa bayani yana da kyau thickening da thixotropy. Nau'o'in AnxinCel®HPMC daban-daban suna da danko daban-daban, kuma kewayon gama gari shine 5 zuwa 100000 mPa·s (maganin ruwa na 2%, 20°C). Maganin sa yana nuna pseudoplasticity, wato, sabon abu mai laushi mai laushi, kuma ya dace da yanayin aikace-aikace irin su sutura, slurries, adhesives, da dai sauransu waɗanda ke buƙatar kyakkyawar rheology.
3. Thermal gelation
Lokacin da aka yi zafi na HPMC a cikin ruwa, bayanin gaskiya yana raguwa kuma an kafa gel a wani zazzabi. Bayan sanyaya, yanayin gel zai dawo zuwa yanayin bayani. Daban-daban na HPMC suna da yanayin zafi daban-daban, gabaɗaya tsakanin 50 zuwa 75°C. Wannan kadarar tana da mahimmanci musamman a aikace-aikace kamar ginin turmi da capsules na magunguna.
4. Ayyukan saman
Saboda kwayoyin HPMC sun ƙunshi ƙungiyoyin hydrophilic da hydrophobic, suna nuna wasu ayyukan saman kuma suna iya taka rawar emulsifying, watsawa da daidaitawa. Alal misali, a cikin sutura da emulsion, HPMC na iya inganta kwanciyar hankali na emulsion kuma ya hana lalata ƙwayoyin pigment.
5. Hygroscopicity
HPMC yana da ƙayyadaddun ƙayyadaddun yanayi kuma yana iya ɗaukar danshi a cikin yanayi mai ɗanɗano. Don haka, a wasu aikace-aikacen, ya kamata a ba da hankali ga rufe marufi don hana ɗaukar danshi da haɓakawa.
6. Kadarorin yin fim
HPMC na iya samar da fim mai tauri da gaskiya, wanda aka yi amfani da shi sosai a abinci, magani (kamar masu sawa) da sutura. Misali, a cikin masana'antar harhada magunguna, ana iya amfani da fim ɗin HPMC azaman murfin kwamfutar hannu don haɓaka kwanciyar hankali na miyagun ƙwayoyi da sakin sarrafawa.
7. Biocompatibility da aminci
HPMC ba shi da guba kuma ba shi da lahani, kuma jikin ɗan adam yana iya daidaita shi cikin aminci, don haka ana amfani da shi sosai a fagen magani da abinci. A matsayin kayan haɓaka magunguna, yawanci ana amfani da shi don samar da allunan da aka ci gaba da fitarwa, harsashi na capsule, da sauransu.
8. pH kwanciyar hankali
HPMC yana da karko a cikin pH na 3 zuwa 11, kuma ba a sauƙaƙe ko haɓakawa ta hanyar acid da alkali ba, don haka ana iya amfani da shi a cikin nau'ikan sinadarai iri-iri, kamar kayan gini, samfuran sinadarai na yau da kullun da samfuran magunguna.
9. Juriya na gishiri
Maganin HPMC yana da tsayin daka ga gishirin inorganic kuma ba shi da sauƙin haɗewa ko rashin tasiri saboda canje-canje a cikin tattarawar ion, wanda ke ba shi damar kiyaye kyakkyawan aiki a wasu tsarin da ke ɗauke da gishiri (kamar turmi siminti).
10. Thermal kwanciyar hankali
AnxinCel®HPMC yana da kyakkyawan kwanciyar hankali a cikin yanayin zafi mai girma, amma yana iya raguwa ko canza launin lokacin da aka fallasa shi zuwa yanayin zafi na dogon lokaci. Har yanzu yana iya kula da kyakkyawan aiki a cikin kewayon zafin jiki (yawanci ƙasa da 200 ° C), don haka ya dace da aikace-aikacen sarrafa zafin jiki.
11. Chemical kwanciyar hankali
HPMCyana da ɗan kwanciyar hankali ga haske, oxidants da sinadarai na gama gari, kuma abubuwan sinadarai na waje ba sa tasiri cikin sauƙi. Don haka, ana iya amfani da shi a cikin samfuran da ke buƙatar adana dogon lokaci, kamar kayan gini da magunguna.
Hydroxypropyl methylcellulose ana amfani dashi sosai a masana'antu da yawa saboda kyakkyawan solubility, thickening, thermal gelation, film-forming Properties da sunadarai kwanciyar hankali. A cikin masana'antar gine-gine, ana iya amfani da shi azaman kauri na siminti; a cikin masana'antar harhada magunguna, ana iya amfani da shi azaman kayan haɓakar magunguna; a cikin masana'antar abinci, ƙari ne na abinci na kowa. Waɗannan kaddarorin jiki ne na musamman waɗanda ke sa HPMC ta zama muhimmin kayan aikin polymer.
Lokacin aikawa: Fabrairu-10-2025