Hydroxypropyl methylcellulose (HPMC)bụ ihe dị mkpa cellulose soluble mmiri nke nwere ọtụtụ ngwa ngwa, tumadi na ọgwụ, nri, ihe ịchọ mma, ihe owuwu na mpaghara mmepụta ihe ndị ọzọ. HPMC bụ ọcha ma ọ bụ na-acha ọcha, ntụ ntụ na-enweghị isi na enweghị isi nke na-agbaze n'ime mmiri ma nwee ike ịmepụta ngwọta na-enweghị atụ, viscous. Enwere ike nyochaa njirimara ya site n'ọtụtụ akụkụ dị ka nhazi kemịkalụ, akụrụngwa anụ ahụ, na mpaghara ngwa.
1. Chemical Ọdịdị na nkwadebe
HPMC bụ ngwaahịa kemịkalụ enwetara site na methylating na hydroxypropylating cellulose eke. Nhazi ya gụnyere otu abụọ na-arụ ọrụ: otu bụ methyl (-OCH₃) na nke ọzọ bụ hydroxypropyl (-OCH₂CHOHCH₃). Ntinye nke otu abụọ a na-eme ka mmiri HPMC na-agbaze, na-arụ ọrụ n'elu, ma nwee ihe dị iche iche solubility, viscosity na àgwà ndị ọzọ.
A ka na-edobe ọkpụkpụ nke dabeere na cellulose n'ime usoro ihe omimi nke HPMC, nke bụ nke polysaccharides eke ma nwee ezigbo biocompatibility na biodegradability. N'ihi na molekul ahụ nwere otu ọrụ dị iche iche, mmiri solubility ya, viscosity na nkwụsi ike nwere ike ịhazi dịka ọnọdụ mmeghachi omume si dị.
2. Solubility na viscosity
Akụkụ pụtara ìhè nke HPMC bụ ezigbo mmiri solubility ya. HPMC nwere nha molekụla dị iche iche na ogo dị iche iche nke nnọchi nwere ike solubility na viscosity dị iche iche. HPMC nwere ike igbari ngwa ngwa na mmiri oyi iji mepụta ngwọta colloidal kwụsiri ike, na mmiri mmiri na pH mmiri adịghị emetụta nke ukwuu.
Dabere n'ụdị na ogo nke nnọchi, viscosity nke HPMC nwere ike gbanwee n'ọtụtụ dị iche iche. N'ikwu okwu n'ozuzu, ngwọta mmiri nke HPMC nwere ụfọdụ viscosity na enwere ike iji ya dị ka thickener, nrapado na stabilizer. Enwere ike ịchịkwa viscosity nke ngwọta mmiri mmiri ya site n'ịgbanwe ịdị arọ ya na ogo nke nnọchi ya, na viscosity a na-ahụkarị sitere na narị otu narị ruo ọtụtụ puku millipascals sekọnd (mPa s).
3. Nkwụsi ike okpomọkụ
HPMC nwere ezigbo nkwụsi ike ọkụ. N'okpuru ọnọdụ okpomọkụ dị elu, usoro kemịkalụ na ihe anụ ahụ nke HPMC na-anọgide na-akwụsi ike, ebe mgbaze ya na-adịkarị elu karịa 200 Celsius. Ya mere, ọ na-arụ ọrụ nke ọma na ụfọdụ ngwa chọrọ ọnọdụ okpomọkụ dị elu. Karịsịa na ụlọ ọrụ nri na ọgwụ, HPMC nwere ike iguzogide ọnọdụ gburugburu ebe obibi siri ike mgbe ejiri ya dị ka ihe ntọhapụ ma ọ bụ ihe a na-achịkwa.
4. Mechanical ike na gelation
Ihe ngwọta HPMC nwere ike ọrụ dị elu na ngbanwe, ma nwee ike ịmepụta usoro gel n'okpuru ọnọdụ ụfọdụ. N'ime ngwa ụlọ ọrụ ụfọdụ, a na-ejikarị HPMC na-emepụta gels ma ọ bụ ihe nkiri kwụsiri ike, ọkachasị n'ọhịa ọgwụ, nkwakọ ngwaahịa nri, ihe ịchọ mma, wdg, maka ịchịkwa ntọhapụ ọgwụ, ịgbatị, nkwụsi ike na mkpuchi nke akụrụngwa.
5. Biocompatibility na biodegradability
Ebe ọ bụ na HPMC sitere na cellulose eke, ọ nwere ezigbo bioocompatibility, ọ fọrọ nke nta ka ọ bụrụ enweghị biotoxicity, yana enwere ike imebi ngwa ngwa n'ime ahụ. Njirimara a na-eme ka ọ bụrụ ihe a na-ejikarị eme ihe na ụlọ ọrụ ọgwụ, karịsịa maka ọgwụ ọnụ na nkwadebe ntọhapụ a na-achịkwa, nke nwere ike imeziwanye bioavailability nke ọgwụ ọjọọ site na ịchịkwa ntọhapụ nke ọgwụ.
6. Ọrụ elu
HPMC nwere a ụfọdụ elu ọrụ, nke nwere ike ibelata elu erughị ala nke ngwọta na welie dispersibility na wettability nke mmiri mmiri. Ọ bụ njirimara a na-eme HPMC n'ọtụtụ ebe na ihe ịchọ mma na ngwaahịa nlekọta onwe onye, dị ka thickeners, emulsifiers na stabilizers na lotions, creams, shampoos na ngwaahịa ndị ọzọ.
7. Ihe ndị na-abụghị ionic
N'adịghị ka ụfọdụ ihe ndị ọzọ sitere na polysaccharide eke, HPMC abụghị ionic. Ọ naghị emeghachi omume na ions na ngwọta ya mere ọ dịghị emetụta mgbanwe na ntinye electrolyte. Nke a na atụmatụ na-eme HPMC nnọọ uru na ụfọdụ pụrụ iche ulo oru ngwa, karịsịa mgbe aqueous ngwọta ma ọ bụ colloids mkpa ka kwụsie ike ruo ogologo oge, HPMC nwere ike hụ na nkwụsi ike na agbanwe agbanwe.
8. Nnukwu ngwa ngwa
Njirimara HPMC ndị a na-eme ka ejiri ya mee ihe n'ọtụtụ mpaghara, ọkachasị gụnyere akụkụ ndị a:
Ụlọ ọrụ ọgwụ: HPMC na-ejikarị dị ka a capsule shei maka ọgwụ ọjọọ, a na-ebu maka nọgidere na-ahapụ ọgwụ, ihe nrapado, a thickener, wdg N'ime ọgwụ nkwadebe, HPMC nwere ike n'ụzọ dị irè ịchịkwa ntọhapụ ọnụego nke ọgwụ ọjọọ eme ihe na melite bioavailability nke ọgwụ ọjọọ.
Ụlọ ọrụ nri: A na-eji HPMC eme ihe n'ọtụtụ ihe ọṅụṅụ, jelii, ice creams, sauces na nri ndị ọzọ dị ka ihe siri ike, stabilizer, emulsifier na gelling agent na ụlọ ọrụ nri, nke nwere ike imeziwanye uto na udidi nke ngwaahịa ahụ.
Ihe ịchọ mma na ngwaahịa nlekọta onwe onye: Na mpaghara ịchọ mma, a na-eji HPMC na ude, mkpuchi ihu, shampoos, ngwaahịa nlekọta anụ ahụ na ngwaahịa ndị ọzọ na-arụ ọrụ nke ịgbatị, nkwụsi ike, emulsification na ọrụ ndị ọzọ.
Ụlọ ọrụ ihe owuwu: A na-ejikarị HPMC eme ihe dị ka ihe na-eme ka mmiri sie ike na ihe eji arụ ụlọ. Ngwa ndị a na-ahụkarị gụnyere ciment mortar, tile adhesives, wdg, nke nwere ike imeziwanye arụmọrụ ihe owuwu yana nkwụsi ike ihe.
Agriculture: HPMC nwekwara ike iji dị ka stabilizer na thickener na pesticide formulations iji nyere ọgwụ na-ekesa ọbụna n'ala ma melite mmetụta nke ngwa.
9. Nchekwa gburugburu ebe obibi na nkwado
Ebe ọ bụ na isi akụrụngwa nkeHPMCsitere na cellulose eke ma nwee ezigbo biodegradability, ọ nwekwara uru ụfọdụ na nchekwa gburugburu ebe obibi. Dị ka polymer eke na-adigide, mmepụta na ojiji nke HPMC agaghị ebute oke ibu na gburugburu ebe obibi.
Hydroxypropyl methylcellulose (HPMC) nwere ọtụtụ ihe magburu onwe ya, dị ka ezigbo mmiri solubility, viscosity akara, thermal nkwụsi ike, biocompatibility, wdg A na-eji ya n'ọtụtụ ụlọ ọrụ dị ka ọgwụ, nri, ihe ịchọ mma, na ihe owuwu. Site na njirimara ya na-abụghị ionic, ihe anụ ahụ na kemịkalụ nwere ike ịhazigharị, yana enyi gburugburu ebe obibi, HPMC na-ewere dị ka ihe polymer na-ekwe nkwa. N'ọdịnihu ụlọ ọrụ mmepụta ihe na nkà na ụzụ mmepe, HPMC ka nwere ọtụtụ nnyocha na ngwa ike.
Oge nzipu: Dec-13-2024