Cov qib sib txawv ntawm HPMC yog dab tsi?

HPMC, los yog hydroxypropyl methylcellulose, yog ib hom cellulose derivative feem ntau siv los ua cov thickening agent, emulsifier, thiab stabilizer nyob rau hauv ntau yam khoom. Nws yog cov hmoov dawb, tsis muaj ntxhiab, tsis qab, uas yog soluble hauv dej txias thiab insoluble hauv dej kub.

HPMC muaj nyob rau ntau qib, txhua tus muaj nws tus kheej cov khoom thiab kev siv. Cov qhab nia ntawm HPMC yog nyob ntawm qib kev hloov pauv (DS) ntawm pawg hydroxypropyl, uas yog ntsuas ntawm cov pawg hydroxypropyl ib chav tsev anhydroglucose. Qhov siab dua ntawm DS, ntau pawg hydroxypropyl tam sim no thiab ntau hydrophilic HPMC yog.

Cov qib ntawm HPMC tau muab faib ua peb pawg tseem ceeb: DS qis, nruab nrab DS, thiab siab DS.

Tsawg DS HPMC feem ntau yog siv rau hauv cov ntawv thov uas tsis tshua muaj viscosity thiab tsis tshua muaj zog gel xav tau. Qib no feem ntau yog siv rau hauv cov khoom noj thiab dej haus, xws li ice cream, sauces, thiab gravy. Nws kuj yog siv rau hauv kev siv tshuaj, xws li ntsiav tshuaj thiab tshuaj ntsiav.

Medium DS HPMC yog siv rau hauv cov ntawv thov uas siab dua viscosity thiab gel lub zog xav tau. Cov qib no feem ntau yog siv rau hauv cov khoom noj thiab dej haus, xws li jams thiab jellies, nrog rau kev siv tshuaj, xws li tshuaj pleev thiab cream.

High DS HPMC yog siv rau hauv daim ntawv thov uas siab viscosity thiab gel zog yog xav tau. Cov qib no feem ntau yog siv rau hauv cov khoom noj thiab dej haus, xws li cheese thiab yogurt, nrog rau hauv kev siv tshuaj, xws li tshuaj suppositories thiab pessaries.

Ntxiv rau peb pawg tseem ceeb ntawm HPMC, kuj tseem muaj ob peb pawg. Cov subcategories no yog ua raws li qib kev hloov pauv, qhov loj me, thiab hom hydroxypropyl pawg.

Cov degree ntawm kev hloov pauv subcategories yog nyob ntawm qhov kev hloov pauv ntawm pawg hydroxypropyl. Cov subcategories no yog qis DS (0.5-1.5), nruab nrab DS (1.5-2.5), thiab siab DS (2.5-3.5).

Cov particle loj subcategories yog nyob ntawm qhov loj ntawm cov hais. Cov subcategories no zoo (tsawg dua 10 microns), nruab nrab (10-20 microns), thiab ntxhib (ntau tshaj 20 microns).

Hom hydroxypropyl pawg subcategories yog raws li hom hydroxypropyl pawg muaj nyob hauv HPMC. Cov subcategories yog hydroxypropyl methylcellulose (HPMC), hydroxypropyl ethylcellulose (HPEC), thiab hydroxypropyl cellulose (HPC).

HPMC yog cov khoom siv ntau yam thiab siv dav hauv ntau yam khoom. Cov qib sib txawv ntawm HPMC yog raws li qib kev hloov pauv, qhov loj me, thiab hom hydroxypropyl pawg, thiab txhua qib nws muaj nws tus kheej cov khoom thiab kev siv.