Hydroxypropylmethylcellulose (HPMC) bụ ngwa na ngwa ngwa n'ofe ụlọ ọrụ dị iche iche. Iji ghọta ihe bụ isi ya, mmadụ ga-abanyerịrị n'ime ihe mejupụtara ya, usoro nrụpụta ya na mmalite ya.
Ngwa nke HPMC:
HPMC bụ polymer synthetic nke na-enweta site na cellulose, polysaccharide sitere n'okike dị na mgbidi cell osisi. Isi iyi nke cellulose bụ osisi pulp ma ọ bụ eriri owu. Ngwakọta nke HPMC gụnyere imegharị cellulose site na usoro mmeghachi omume kemịkalụ iji mee ka ọ bụrụ ihe sitere na cellulose.
Akụkụ sịntetik nke mmepụta HPMC:
Usoro etherification:
Mmepụta nke HPMC gụnyere etherification nke cellulose na propylene oxide na methyl chloride.
N'oge usoro a, a na-ewebata otu hydroxypropyl na methyl n'ime ọkpụkpụ azụ cellulose, na-akpụ HPMC.
Ngbanwe kemịkalụ:
Mgbanwe kemịkalụ ewebatara n'oge njikọta na-ebute HPMC ịbụ nkewa dị ka ogige sịntetik nke ọkara.
Ogo nnọchi anya (DS) na-ezo aka na nkezi ọnụọgụ hydroxypropyl na methyl otu glucose n'ime agbụ cellulose. Enwere ike ịhazi uru DS a n'oge usoro nrụpụta iji nweta HPMC nwere ihe ndị akọwapụtara.
Mmepụta ụlọ ọrụ:
A na-emepụta HPMC n'ụzọ dị ukwuu n'ọtụtụ ụlọ ọrụ na-eji mmeghachi omume kemịkalụ na-achịkwa.
Usoro mmepụta ihe na-agụnye ọnọdụ ziri ezi iji nweta ihe ndị a chọrọ na ọrụ nke ngwaahịa ikpeazụ.
Isi mmalite nke HPMC:
Cellulose dị ka isi iyi:
Cellulose bụ ihe bụ isi nke HPMC ma dị ukwuu na okike.
Osisi, karịsịa osisi na owu, bụ isi mmalite nke cellulose. Mwepụta nke cellulose sitere na isi mmalite ndị a na-ebute usoro nrụpụta HPMC.
Nkwalite ndụ:
HPMC bụ ihe na-emebi emebi, ihe onwunwe nke ọtụtụ ihe okike.
Ọnụnọ nke cellulose eke na HPMC na-enye aka na ihe ndị nwere ike imebi ya, na-eme ka ọ bụrụ enyi na gburugburu ebe obibi na ụfọdụ ngwa.
Ngwa nke HPMC:
ọgwụ:
A na-eji HPMC eme ihe n'ọtụtụ ebe na ụlọ ọrụ ọgwụ dị ka ndị na-ahụ maka mkpuchi, ndị na-ekekọta na matrices ntọhapụ na mbadamba mbadamba. Ndakọrịta ya na ihe ntọhapụ a na-achịkwa na-eme ka ọ bụrụ nhọrọ mbụ maka usoro nnyefe ọgwụ.
Ụlọ ọrụ ihe owuwu:
N'ime ihe owuwu, a na-eji HPMC eme ihe dị ka ihe na-ejigide mmiri, ihe na-ekpu mmiri, na nhazi oge na ihe ndị sitere na ciment. Ọrụ ya n'ịkwalite arụmọrụ yana nrapado nke ngwa agha na plasta dị oke mkpa.
ụlọ ọrụ nri:
A na-eji HPMC eme ihe dị ka onye na-agbapụta ihe na ihe gelling na ụlọ ọrụ nri.
A na-ejikarị ya eme ihe na nri dị ka soseji, ofe na ngwa esi nri.
ịchọ mma:
N'ihe ịchọ mma, a na-ahụ HPMC n'ụdị ngwaahịa dị iche iche gụnyere ude, lotions, na gels, na-eme dị ka thickeners, stabilizers, na emulsifiers.
Ngwa mmepụta ihe:
Ọdịiche nke HPMC gbatịrị na ngwa ụlọ ọrụ dị iche iche, gụnyere nhazi agba, nrapado na nhazi akwa.
Ọkwa nchịkwa:
Ọkwa GRAS:
Na United States, a na-amata HPMC dị ka nchekwa (GRAS) maka ụfọdụ ngwa n'ime nri nke US Food and Drug Administration (FDA).
Ụkpụrụ ọgwụ:
HPMC eji na ngwaahịa ọgwụ ga-agbasorịrị ụkpụrụ pharmacopeial dị ka United States Pharmacopeia (USP) na European Pharmacopoeia (Ph. Eur.).
na ngwụcha:
Na nchịkọta, hydroxypropyl methylcellulose (HPMC) bụ polymer synthetic ọkara nke sitere na cellulose eke sitere na usoro mgbanwe kemịkalụ a na-achịkwa. N'agbanyeghị na o meela mgbanwe dị ukwuu sịntetik, mmalite ya sitere na ihe ndị sitere n'okike dị ka pulp osisi na owu. Njirimara pụrụ iche nke HPMC na-eme ka ọ bụrụ ihe bara uru a na-ejikarị eme ihe na ọgwụ, ihe owuwu, nri, ihe ịchọ mma na ụlọ ọrụ dị iche iche. Nchikota nke cellulose eke na ngbanwe sịntetik na-enye aka na ntụgharị ya, biodegradability na nnabata nchịkwa na mpaghara dị iche iche.
Oge nzipu: Dec-18-2023