Hydroxypyl methyplellulose (HPMAC) 'Ya'yan ruwa mai narkewa ne wanda aka saba amfani dasu a cikin magunguna, abinci, kayan gini da sauran filayen. Ingancin ingancinsa yana shafar wasan kwaikwayon da kwanciyar hankali.
1. Bayyanar da launi
Bayyanannun launuka da launi sune hanyoyin farko don kimanta ingancin hydroxypropyl methylcellulame. Kyakkyawan ingancin HPMC yawanci fari ne ko kuma fararen foda tare da sutura mai laushi da m rubutu. Launi bai kamata ya zama launin rawaya ba, launin ruwan kasa ko kowane launi na halitta, wanda zai iya zama saboda lalacewar lalacewa ta hanyar sanya albarkatun ƙasa ko ajiya mai ban sha'awa yayin aiwatar da kayan samarwa. Idan launi bai zama mahaukaci ba, yana iya nuna cewa akwai matsala tare da samfuran samfurori da ƙarin bincike ana buƙata.
2. Girman girman barbashi
Rarraba girman barbashi yana daya daga cikin mahimman abubuwan musamman wajen kimanta ingancin HPMC. HPMC na kyawawan ingancin yawanci yana da girman barbashi. Mafi girma ko kananan barbashi zasu shafi warwarewarta da tasiri a aikace-aikace aikace-aikace. Za'a iya bincika girman barbashi ta hanyar sieving ko mai girman girman Laser barbashi. Manyan barbashi na iya haifar da rashin daidaituwa da kuma shafi danko da daidaituwa. Za'a iya amfani da matakan nika daban-daban a samarwa don sarrafa rarraba rarraba barbashi don tabbatar da cewa hpmc na iya yin abubuwa da kyau a cikin aikace-aikacen da aka nufa.
3. Ruwa na ruwa da rushewa
Solubility na ruwa na HPMC muhimmiyar nuna alama ce don kimanta ingancinsa. Tsarinsa yawanci shine kwayoyin halitta da kuma matsayin musanya na Hydroxypropyl da metyl ƙungiyoyi. HPMC mai inganci zai iya narkewa cikin ruwa don samar da m da kuma bayani. Don gwada maganin ruwa, ana iya ƙara wasu adadin HPMC zuwa ruwa, ana motsa shi a wani zazzabi, da saurin rushewarsa da daidaituwa ana iya lura da shi. Idan ya narke a hankali ko kuma yana haifar da ɓoyayyen ɓoyewa, yana iya zama cewa an cancanci ingancin HPMC.
4. Gwajin Magana
Dalilin HPMC shine mai nuna alamar ingancin sa, musamman idan ana amfani dashi azaman thickener, emulsifier wakili. Dalida yawanci yana da alaƙa da nauyin kwayar halitta da kuma yanayin maye gurbin HPMC. Za'a iya gwada danko ta hanyar mai jujjuyawa ko rheometer don kimanta kaddarorinta na rhuherial. Zai fi dacewa, dankan HPMC ya zama barga cikin wasu kewayon don tabbatar da aikinta daban-daban.
A lokacin da gwada danko, ya kamata a narkar da HPMC a cikin wani tushen ruwa, ya kamata a daidaita yawan zafin jiki, da kuma kayan aikin ƙirar mafita a wurare daban-daban ya kamata a auna. Idan danko ba mahaukaci ba ne, yana iya shafar aikin HPMC, musamman ma a aikace-aikace tare da buƙatu mai ƙarfi na danko.
5. Deeuldararfafa Dokar Canji
Matsayi na musanya (DS) yana nufin rabo na hydroxypropyl da metyl ƙungiyoyi a cikin kwayoyin HPMC. Matsayi na musanyawa kai tsaye yana shafar karancinsa, danko da sauran kayan aikin jiki da najimare. Dabaru kamar spectroscopy (ftir) ko galittar magnetic (NMR) ana amfani da su don bincika abubuwan da ke cikin methyl da hydroxypropyl a cikin kwayoyin HPMC a cikin kwayoyin.
Don HPMC mai inganci, darajar canji ya kamata ya kasance cikin kewayon da aka ƙayyade. Yayi girman kai ko kuma ƙarancin yanayin canji na iya haifar da aikin da ba za'a iya amfani da shi ba yana shafar ingancin samfurin ƙarshe. Misali, mai yawan maye gurbin methyl na iya shafar hanyar da ta ruwa, yayin da yake da ƙarancin canji na iya shafar aikinsa na thickeling.
6. Dalili na danshi abun ciki
Danshi mai danshi shine ɗayan mahimman abubuwan da suka shafi ingancin HPMC. To, high babban danshi abun danshi na iya haifar da samfurin don zubar da kuma agglomerate, ta hanyar da ya shafi aikinsa. Danshi abun ciki an ƙaddara shi ta hanyar bushewa ko Karl Fischer Takaddara. Danshi abun ciki na HPMC ya kamata ya zama ƙasa da 5% don tabbatar da cewa ingancinsa ba ya canzawa yayin ajiya da amfani.
7. Gwajin PH
Maganin pH na maganin HPMC shima muhimmin mai mahimmanci ne na ingancinsa. Maganin HPMC ya kamata ya sami ingantaccen ƙimar PH, gaba ɗaya tsakanin 4.0 zuwa 8.0. Ya kasance mafita acidic ko alkalin alkaline na iya shafar kwanciyar hankali da aiki a aikace-aikacen. Za'a iya tantance ƙimar pH ta hanyar auna ph na maganin amfani da mitar PH.
8. Gwajin gwajin kwayoyin halitta
HPMC shine mai amfani da ciki a cikin magunguna da masana'antu na abinci, da kuma gurbata ƙwayar ƙwayar cuta tana buƙatar kulawa ta musamman. Cutar ƙwayoyin cuta ba kawai ta shafi amincin samfurin ba, amma kuma yana iya haifar da samfurin don lalacewa ko deteriorate cikin aiki. Ana iya aiwatar da gwajin microbial ta al'ada, PCR da sauran hanyoyin don tabbatar da cewa ka'idojin tsabta na HPMC sun cika bukatun ka'idojin da suka dace.
9. Tarihin Hermograpimcetric (TGA) da bambancin bincika Calorimetry (DSC)
Ana iya amfani da bincike na Thermograpimorric (TGA) da bambancin bincika Calormetry (DSC) don yin nazarin yanayin kwanciyar hankali na HPMC da halaye na lalata yayin dumama. Waɗannan hanyoyin na iya samun mahimman bayanai kamar su asara, suna narkewa, da yanayin zafin jiki na HPMC a yanayin zafi daban-daban don taimakawa ƙayyadaddun buƙatun aikace-aikace.
10. Dalili na abun ciki na chloride
Idan hpmc ya ƙunshi chloride da yawa, zai shafi warwarewarsa da kwanciyar hankali a aikace-aikace. Za a iya tantance abun cikin chlorofie da harshen Phorodetry ko makamantansu. Abubuwan da ke cikin hpmc tare da ingantaccen inganci ya kamata a sarrafa su a cikin wani kewayon don tabbatar da amincinsa da tasiri.
The above methods can comprehensively evaluate the quality of hydroxypropyl methylcellulose, including appearance, solubility, viscosity, degree of substitution, moisture content and other aspects. Aikace-aikace daban-daban suna da buƙatu daban-daban don HPMC, don haka lokacin kimanta ingancinsa, ya zama dole a gudanar da cikakken gwaji a hade tare da bukatun takamaiman filayen aikace-aikacen. Wadannan hanyoyin gwajin na iya tabbatar da kwanciyar hankali, aiki da amincin kayayyakin HPMC, suna ba da garanti don aikace-aikacen da suke da yawa.
Lokacin Post: Feb-14-2225