Hydroxypropyl methylcellulose (HPMC) bụ ihe na-abụghị ionic mmiri soluble cellulose ether ọtụtụ ebe na-ewu, ọgwụ, nri, ntecha na chemical ụlọ ọrụ. Njirimara viscosity nke ngwọta mmiri ya bụ isi ihe na-emetụta arụmọrụ ngwa ya.
1. Basic e ji mara HPMC
AnxinCel®HPMC bụ cellulose ewepụtara site na iwebata hydroxypropyl na methyl n'ime agbụ molekụla nke cellulose. Ọ nwere mma mmiri solubility na dịtụ elu viscosity, na-ejikarị kwadebe aqueous ngwọta na kpọmkwem rheological Njirimara. Njirimara ndị a na-eme HPMC n'ọtụtụ ebe na mkpuchi, adhesives, ntọhapụ ọgwụ, ihe mgbakwunye nri na ụlọ ọrụ ndị ọzọ.
2. Viscosity e ji mara HPMC aqueous ngwọta
The viscosity e ji mara nke HPMC aqueous ngwọta na-emetụta ọtụtụ ihe, tumadi gụnyere ịta, okpomọkụ, shiee ọnụego, pH uru na molekụla Ọdịdị.
Mmetụta nke itinye uche na viscosity
The viscosity nke HPMC aqueous ngwọta na-abawanye na-amụba itinye uche. Mgbe ịta ahụhụ nke HPMC dị ala, ngwọta mmiri dị nro ma nwee obere viscosity; ka ntinye uche na-abawanye, mmekọrịta dị n'etiti ụmụ irighiri ihe na-abawanye, na viscosity nke ngwọta mmiri na-abawanye nke ukwuu. Dị ka ọ na-adịkarị, viscosity nke ngwọta HPMC na-ejikọta ya na ntinye uche ya, ma ọ na-eme ka ọ kwụsie ike na ụfọdụ ntinye uche, na-egosi njirimara viscosity nke ngwọta.
Mmetụta okpomọkụ na viscosity
Okpomọkụ bụ ihe dị mkpa na-emetụta viscosity nke ngwọta mmiri AnxinCel®HPMC. Ka okpomọkụ na-ebili, njikọ hydrogen na mmekọrịta hydrophobic dị na ụmụ irighiri ihe HPMC ga-ada mbà, na-eme ka mbelata ike njikọ dị n'etiti ụmụ irighiri ihe, si otú ahụ na-ebelata viscosity nke ngwọta mmiri. N'ikwu okwu n'ozuzu, viscosity nke HPMC aqueous solution na-egosi mgbanwe dị elu na-agbadata na okpomọkụ na-arịwanye elu, karịsịa na oke okpomọkụ dị elu. Njirimara a na-eme ka HPMC nwee ikike nchịkwa ka mma na ụfọdụ ngwa njikwa okpomọkụ.
Mmetụta ọnụ ọgụgụ shear na viscosity
HPMC aqueous ngwọta na-egosi ahụkarị Newtonian mmiri e ji mara na ala shiee udu, ya bụ, viscosity bụ dịtụ kwụsiri ike; Otú ọ dị, na ọnụ ọgụgụ dị elu nke shear, viscosity nke ngwọta HPMC ga-ebelata nke ukwuu, na-egosi na ọ nwere ihe ndị na-eme ka ọkpụkpụ sie ike. Ihe ụmụ irighiri ihe HPMC nwere ụfọdụ ihe rheological. Na ọnụ ọgụgụ dị ala, agbụ ndị molekụla na-agbagọ karịa, na-eme ka ọkpụkpụ dị elu dị elu, nke a na-egosipụta dị ka viscosity dị elu; na ọnụ ọgụgụ dị elu nke shea, agbụ ndị molekụla na-agbatị, na-eme ka mmiri dị mma, na viscosity na-ebelata.
Mmetụta nke uru pH na viscosity
HPMC aqueous ngwọta n'ozuzu na-ekwusi a dịtụ ike viscosity n'okpuru na-anọpụ iche na-adịghị ike alkaline ọnọdụ. Na acid siri ike ma ọ bụ ebe ntọala siri ike, ụmụ irighiri HPMC nwere ike nweta mmeghachi omume protonation ma ọ bụ deprotonation, na-ebute mgbanwe na hydrophilicity, hydrophobicity na intermolecular mmekọrịta n'etiti ụmụ irighiri ihe, si otú ahụ na-emetụta viscosity nke aqueous ngwọta. N'okpuru ọnọdụ nkịtị, mgbanwe na pH enweghị mmetụta dị nta na viscosity nke ngwọta HPMC, mana n'okpuru ọnọdụ pH dị oke egwu, mgbanwe viscosity nwere ike ịpụta ìhè karị.
Mmetụta nke usoro ihe omimi na viscosity
Ihe e ji mara viscosity nke HPMC nwere njikọ chiri anya na usoro ihe omimi ya. Ogo nke nnọchi nke hydroxypropyl na methyl otu dị na molekul nwere mmetụta dị ukwuu na viscosity nke ngwọta mmiri. Dị elu ogo nke nnọchi nke otu ahụ, na-esiwanye ike hydrophilicity nke HPMC na elu viscosity nke ngwọta. Na mgbakwunye, ịdị arọ molekụla nke HPMC bụkwa isi ihe na-emetụta viscosity ya. Ka ibu molekụla ahụ buru ibu, ka agbụ molekụla na-adị ogologo, yana mmekọrịta dị n'etiti ụmụ irighiri ihe na-esiwanye ike, na-ebute viscosity dị elu nke ngwọta mmiri.
3. Ihe pụtara viscosity e ji mara HPMC aqueous ngwọta na ngwa
The viscosity e ji mara nke HPMC aqueous ngwọta dị oké mkpa na ya ngwa dị iche iche ubi.
Ebe a na-ewu ihe: A na-ejikarị HPMC na-eji ciment mortar na adhesives, ma nwee ọrụ nke ịgbasa, idebe mmiri, na imeziwanye arụmọrụ ihe owuwu. Njiri mara viscosity ya na-emetụta arụmọrụ na adhesion nke ngwa agha ozugbo. Site n'ịgbanwe ntinye uche na ihe omimi nke HPMC, enwere ike ịchịkwa rheological Njirimara nke ngwa agha, si otú ahụ na-emeziwanye ịdị mfe nke ihe owuwu.
Ụlọ ọrụ na-emepụta ọgwụ: A na-ejikarị ngwọta mmiri AnxinCel®HPMC eme ihe na nkwadebe dị ka ihe na-ahapụ ọgwụ, shells capsule, na anya mmiri. Njirimara viscosity ya nwere ike imetụta ntọhapụ nke ọgwụ ọjọọ ma na-achịkwa usoro ntọhapụ nke ọgwụ na ahụ. Site n'ịhọrọ HPMC nwere ịdị arọ molekụla kwesịrị ekwesị yana ogo nnọchi anya, enwere ike gbanwee njirimara ntọhapụ nke ọgwụ iji nweta nsonaazụ ọgwụgwọ.
Ụlọ ọrụ nri: A na-eji HPMC eme ihe dị ka thickener, stabilizer, na emulsifier na nhazi nri. Njirimara viscosity nke ngwọta mmiri ya na-emetụta uto na nkwụsi ike nke nri. Site n'ịgbanwe ụdị na ọnụọgụ HPMC ejiri mee ihe, enwere ike ịchịkwa udidi nri nke ọma.
Ụlọ ọrụ ịchọ mma: HPMC, dị ka onye na-agba ume na stabilizer na ihe ịchọ mma, nwere ike imeziwanye ọdịdị nke ngwaahịa ahụ, na-enye ya mmiri mmiri kwesịrị ekwesị na mmetụta dị mma. Njirimara viscosity ya nwere mmetụta dị mkpa na ahụmịhe onye ọrụ nke ngwaahịa dị ka ude, gels, na shampoos.
The viscosity e ji maraHPMC aqueous ngwọta na-emetụta ọtụtụ ihe dị ka itinye uche, okpomọkụ, shii ọnụego, pH uru, na molekụla Ọdịdị. Site n'ịgbanwe ihe ndị a, enwere ike ịkwalite arụmọrụ ngwa nke HPMC iji gboo mkpa nke ụlọ ọrụ dị iche iche maka njirimara rheological ya. Na-omimi nnyocha na viscosity e ji mara HPMC aqueous ngwọta bụghị nanị na-enyere aka ịghọta ya isi Njirimara, ma na-enye usoro iwu nduzi maka ngwa ya n'ezie mmepụta.
Oge nzipu: Jan-16-2025