HPMC hydroxypropyl methylcellulosetau dhau los ua ib qho ntawm cov tshuaj pabcuam loj tshaj plaws hauv tsev thiab txawv teb chaws, vim tias HPMC muaj qhov zoo uas lwm cov tshuaj pabcuam tsis muaj.
1. Kev yaj dej
Nws yaj tau hauv dej txias hauv qab 40 ℃ lossis 70% ethanol, thiab nws yeej tsis yaj hauv dej kub saum 60 ℃, tab sis nws tuaj yeem gelled.
2. Tshuaj lom neeg tsis muaj zog
HPMC yog ib hom cellulose ether uas tsis yog ionic. Nws cov kua tsis nqa cov nqi ionic thiab tsis cuam tshuam nrog cov ntsev hlau lossis cov organic ionic. Yog li ntawd, lwm cov khoom siv tsis cuam tshuam nrog nws thaum lub sijhawm npaj.
3. Kev Ruaj Ntseg
Nws ruaj khov rau cov kua qaub thiab alkali, thiab tuaj yeem khaws cia ntev ntawm pH 3 ～ 11, thiab nws cov viscosity tsis muaj kev hloov pauv pom tseeb. Cov kua dej ntawm HPMC muaj cov nyhuv tiv thaiv mildew thiab tuaj yeem tswj tau qhov ruaj khov viscosity zoo thaum lub sijhawm khaws cia ntev. Cov tshuaj sivHPMCmuaj kev ruaj khov zoo dua li cov uas siv cov tshuaj ib txwm muaj (xws li dextrin, hmoov txhuv nplej siab, thiab lwm yam).
4. Kev kho tau qhov viscosity
Cov viscosity sib txawv ntawm HPMC tuaj yeem sib xyaw ua ke hauv ntau qhov sib txawv, thiab nws cov viscosity tuaj yeem hloov pauv raws li qee txoj cai, thiab muaj kev sib raug zoo linear, yog li nws tuaj yeem xaiv raws li qhov xav tau. 2.5 Metabolic inertia HPMC tsis nqus lossis metabolized hauv lub cev, thiab tsis muab calories, yog li nws yog ib qho khoom siv zoo rau kev npaj tshuaj. .
5. Kev Ruaj Ntseg
Feem ntau xav tias qhov ntawdHPMCyog cov khoom tsis muaj tshuaj lom thiab tsis ua rau khaus.
HPMC qib tshuaj yog ib qho khoom siv tseem ceeb rau kev tsim cov tshuaj uas tswj tau thiab tswj tau. Nws yog ib qho tshuaj uas txhawb nqa los ntawm lub xeev rau kev tshawb fawb thiab kev txhim kho, thiab ua raws li kev coj ua ntawm kev txhim kho uas txhawb nqa los ntawm txoj cai kev lag luam hauv tebchaws. HPMC qib tshuaj yog cov khoom siv tseem ceeb rau kev tsim cov tshuaj HPMC cog, suav txog ntau dua 90% ntawm cov khoom siv raw ntawm HPMC cog tshuaj. Cov tshuaj cog uas tsim tawm muaj qhov zoo ntawm kev nyab xeeb thiab kev tu cev, kev siv dav, tsis muaj kev pheej hmoo ntawm kev sib txuas lus, thiab kev ruaj khov siab, uas ua raws li kev cia siab ntawm cov neeg siv khoom. Cov kev cai nyab xeeb thiab kev tu cev ntawm cov khoom noj thiab tshuaj yog ib qho ntawm cov khoom noj khoom haus tseem ceeb thiab cov khoom hloov pauv zoo tagnrho rau cov tshuaj gelatin tsiaj.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024