Hydroxypyl methylcelose (HPMC) fili ne na polymer na roba sosai a cikin magani, abinci, gini, kayan shafawa da sauran filayen. Yana da kyakkyawan solquility na ruwa, kaddarorin yankuna da kwanciyar hankali, saboda haka yana da mahimmanci aikace-aikace a masana'antu daban-daban. Don tabbatar da ingancinsa da tsarkakakken tsari, tantancewar da ta dace ya zama dole. Wadannan hanyoyin ingantattun hanyoyin sadarwa suna da sauki don hydroxypropyl methylcellulose (hpmc), rufe fannoni kamar bayyanar da bayyanar da amsawa da sunadarai dauki.
1.
HPMC yawanci fari ne don kashe-fararen foda ko kayan masarufi, mara kyale da ma'adinai. Ta hanyar lura da bayyanar sa, zaku iya yin hukunci da cikakken bayani ko tsarkakakken HPMC. Duk wani canji mai launi ko kasancewar rashin jituwa na iya nuna cewa samfurin yana da tsabta ko gurbata.
2. Shaida ganewa
HPMC yana da kyakkyawar karuwa, musamman cikin ruwa. Sanya karamin adadin samfurin zuwa cikin ruwa kuma saro a hankali. Idan zai iya narkewa da sauri kuma samar da maganin mafita na musamman, yana nufin cewa samfurin shine hydroxypropyl methylcellulose. Saurin rushewa da kuma danko na maganin na iya danganta da nauyin kwayar cutar hpmc da kuma abubuwan da ke cikin hydroxypropyl da methyl sunadan sunadarai.
A lokaci guda, karancin hpmc a cikin kwayoyin halitta za'a iya amfani dashi azaman ka'idar tantancewa. HPMC yana da narkewa a yawancin abubuwan haɗin gwiwa (kamar acetone, ethanol, da sauransu), amma insolable a cikin kitse na kitse. Ana iya tabbatar da wannan halayyar ta hanyar gwada karyuwar ta a cikin abubuwan da suka dace.
3. Infrastencopy (Ir)
Spectroscopy (IR Babban fasalin tsarin HPMC shine hada wasu kungiyoyin kamar methyl (-ch3) da hydroxypropyl (-ch2ch (oh) ch3). Kasancewar wadannan kungiyoyin za a iya tabbatar da su ta hanyar kwace daga cikin mayaƙan cutar na Iran.
Halin halayyar lalata na ɗan itacen HPMC na HPMC sun haɗa da:
2920 cm-1 (Chrenching vibration)
1450 cm-1 (ch lanƙwasa girgizawa)
1100-1200 cm-1 (COC yana shimfiɗa rawar jiki)
3400 cm-1 (oh shimfiɗa rawar jiki, ƙimar ƙimar na iya canzawa saboda kasancewar ruwa)
Ta hanyar gwada waƙar ɓoyayyen sihiri na daidaitaccen samfurin HPMC, ana iya kwatanta shi da bakan da ba a sani ba don tabbatar da asalin samfurin.
4. Ganowar sunadarai
HPMC, a matsayin fili na Enther, yana da mahimman halaye na sinadarai kuma ana iya gano su ta hanyar halayen sunadarai masu sauƙin sauƙa masu sauƙi.
(1) dauki karkashin yanayin acidic:
Narke karamin adadin hpmc a ruwa, ƙara dilutrochloric acid, da zafi. Idan wani abu mai colloidal ya bayyana a cikin mafita, yana nufin cewa ya ƙunshi HPMC. Wannan matakin za a iya gano shi ta hanyar yanayin tsarin hydroxypolyl da metyl ƙungiyoyi a ƙarƙashin yanayin acidic.
(2) dauki karkashin yanayin alkaline: HPMC ta narke cikin ruwa don samar da maganin sanyi. Ba shi da sauƙi a narkewa a ƙarƙashin yanayin alkaline (kamar su sodium hydroxide bayani), wanda ke da alaƙa da hydrochicicility da kayan aikin hydrogel. Idan mafita shine turbid ko precipigan, yana nufin cewa hpmc yana nan.
5. Shaida ta hanyar hanyar danko. Gabaɗaya magana, HPMC za ta samar da wani abu mai kyau tare da takamaiman danko bayan ratsa cikin ruwa, kuma amsar tana ƙaruwa tare da karuwar nauyin ƙwayoyin jikin sa.
Don auna dankan, ruwan hpmc bayani za a iya aunawa ta hanyar amfani da mai juyawa mai juyawa ko bututun mai kallo na gilashin gilashi. A cewar nauyin kwayar cutar kwayar cutar hpmc da maida hankali kan mafita, ana iya kiyasta dankan. Idan danko na samfurin yana da matukar raguwa sosai da daidaitaccen bayani HPMC, yana iya nuna cewa sinadaranta suna ƙazanta ko nauyin kwayoyin halitta sun ragu.
6. Melting Point / Bayyanar da Baya HPMC, a matsayin babban fili mai nauyi, yawanci bashi da bayyananniyar ma'ana, amma zai nuna laushi ko bazuwar a lokacin dumama. Lokacin da HPMC yana mai zafi, ana iya lura da canje-canje a yanayin zafi daban-daban. Gabaɗaya magana, HPMC za ta fara bazu a 180-200 ℃, sakin wasu abubuwa masu zuwa (kamar ruwa da ƙwayoyin cuta). Canjin da ke cikin lalata zai iya ƙara tabbatar da cewa samfurin shine tsarkakakken HPMC.
7
Maganin da aka kirkira bayan HPMC ta lalata gabaɗaya yana da ƙarancin tashin hankali. Za'a iya auna tashin hankali na HPMC na HPMC ta amfani da wani saman tensirometer ko hanyar drip. Idan ya dace da tashin hankali na daidaitaccen bayani, yana nufin cewa samfurin shine HPMC.
Hanyoyin da ke sama suna gabatar da hanyoyi da yawa da yawa na gama da yawa don gano hydroxypypropyl methylcellulhinyl methylcellulhinyl met Waɗannan hanyoyin suna tantance HPMC daga kusurwoyi da yawa kamar bayyanar, amsawar sunadarai, danko, danko, da suke nufi, amincin samfurin za'a iya tabbatar da shi, amincin samfurin za'a iya tabbatar da shi, amincin samfurin za'a iya tabbatar da shi, amincin samfurin za'a iya tabbatar da shi, da tsarkakakkiyar ma'ana ga aikace-aikacen ta a daban-daban masana'antu.
Lokaci: Feb-19-2025