Lub peev xwm tuav dej ntawm hydroxypropyl methylcellulose nyob ntawm cov ntsiab lus hydroxypropyl. Nyob rau hauv tib yam kev mob, cov dej tuav lub peev xwm ntawm siab hydroxypropyl methylcellulose muaj zog dua, thiab cov ntsiab lus methoxy ntawm tib cov ntsiab lus hydroxypropyl raug txo kom tsim nyog. . Qhov siab dua cov ntsiab lus ntawm hydroxypropyl methylcellulose, qhov ntau dua nws cov viscosity, yog li thaum xaiv cov khoom, koj yuav tsum xaiv cov khoom uas haum rau koj raws li lub hom phiaj ntawm cov khoom.
Kub thiab lwm yam muaj feem xyuam rau cov dej tuav ntawm hydroxypropyl methylcellulose.
Thermal gel kub:
Cellulose ether HPMC muaj lub siab thermal gelation kub thiab tuav dej zoo; ntawm qhov tsis sib xws, nws muaj kev tuav dej tsis zoo.
Viscosity ntawm cellulose ether HPMC:
Thaum lub viscosity ntawm HPMC nce, nws cov dej tuav kuj nce; Thaum cov viscosity nce mus rau ib qho twg, qhov nce hauv dej khaws cia qis.
Cellulose ether HPMC homogeneous:
HPMC muaj cov tshuaj tiv thaiv zoo ib yam, tsis sib xws ntawm methoxyl thiab hydroxypropoxyl, thiab muaj dej tuav tau zoo.
Cellulose ether HPMC ntau npaum li cas:
Qhov ntau npaum li cas, qhov siab dua cov dej tuav tus nqi thiab qhov pom tseeb ntawm cov dej tuav cov nyhuv.
Thaum cov nyiaj ntxiv yog 0.25 ~ 0.6%, cov dej tuav tau nce nrawm nrog qhov nce ntxiv ntawm cov nyiaj ntxiv; thaum tus nqi ntxiv nce ntxiv, qhov nce ntxiv ntawm cov dej tuav tus nqi qeeb.
Nyob rau hauv luv luv, cov dej tuav ntawm HPMC muaj feem xyuam rau tej yam xws li kub thiab viscosity, thiab nws cov dej tuav yog muaj feem xyuam rau tus nqi ntawm hydroxypropyl methylcellulose ntxiv. Thaum tus nqi ntawm hydroxypropyl methylcellulose nce mus txog ib qho nqi, nws cov dej tuav tau nce mus txog qhov sib npaug.
Post lub sij hawm: Feb-23-2023