Chii chinonzi pH kukosha kweHPMC?

Iyo PH Kukosha kweHPMC (HydroxyprEpropyl methylcellose) zvinoenderana nekushambadzira kwayo mumhinduro, tembiricha, uye kunaka kwemvura inoshandiswa. Kazhinji, iyo PH Kukosha kweHPMC mumamiriro ekunze iri pakati pe5,0 uye 8.0, zvichienderana nemamiriro ekunze uye zvakatemwa zvakapihwa nemugadziri.

1. Basic Properties yeHPMC
HPMC ndeye isiri-ionic cellulose inowanzo kushandiswa mune iyo mishonga yemishonga, chikafu uye maindasitiri ekunyora, aine firimu rakanaka-kuumba uye kugadzikana uye kugadzikana. Izvo zvisiri-ionic, svutugadzike mumvura inotonhora asi kwete mumvura inopisa, uye mhinduro yacho kazhinji haina kurerekera kana zvishoma acidic. Mune maindasitiri ekushandisa, HPMC inogamuchirwa zvakanyanya nekuda kwekuchengetedza kwayo uye kugadzikana kwenzvimbo.

2. PH Range yeHPMC Mhedzisiro Mhinduro
Sekureva kweiyo Laboratory data uye researchero, iyo pH Kukosha kweHPMC mune yakaderera-kusarudzika kwemvura mhinduro (yakadai sey 1-2%) kazhinji pakati pe5,0 uye 8.0. Mirayiridzo yechigadzirwa inopihwa nemugadziri kazhinji inowanzo kupa iyo yakafanana pH Range yeVashandisi kuti vataure nezve panguva yekugadziriswa. Semuenzaniso, iyo PH Kukosha kweimwe hpmc zvigadzirwa mu 0,1% mhinduro yemvura ndeye 5,5 kusvika 7.5, iyo iri pedyo neyakagwinya.

Soliturity Solitration Solution: Paderera Solitration (<2%), iyo PH Kukosha kweHPMC mushure mekunyungudika mumvura kazhinji kusarerekera.

Solice High Solention Solution: Pazvivakwa zvakakwirira, iyo yekugadzirisa miscossity inowedzera, asi iyo ph kukosha ichiri kuchinjika mune yakasarudzika kusarerekera.

Mhedzisiro ye tembiricha: iyo solubility yeHPMC inokanganiswa kwazvo neku tembiricha. Iyo inonyura mumvura inotonhora uye iri nyore nyore mumvura yakanyanya kupisa. Paunenge uchigadzirira HPMC Solution, inowanzo kurudzirwa kushandisa mvura inotonhora kuti udzivise solubility shanduko inokonzerwa nekunyanyisa kupisa kwakanyanya.

3. PH Koshesa Kuwanikwa uye Kufurira Zvinhu
Kazhinji, panguva yekugadzira uye kushandisa, kana uchiona iyo PH Kukosha kweHPMC Mhedzisiro Solution, iyo calibrated ph meter inoshandiswa pakuyerwa zvakananga. Nekudaro, zvinotevera zvinhu zvinogona kukanganisa mhedzisiro:

Kuchena kwemvura: Mvura kubva kune dzakasiyana masosi inogona kunge ine yakadzika munyu, zvicherwa, nezvimwe, izvo zvinokanganisa iyo ph chiyero. Zvinowanzorudzirwa kushandisa madhiri emvura kana mvura yakadzikira kugadzirira HPMC Solution yekuona kuti chokwadi chemhedzisiro.
Solution Solidation: Iyo yepamusoro yeHPMC yekuvhara, iyo yekuvhara kwemhinduro, iyo inounza mamwe matambudziko kuPh kuyerwa, saka yakaderera kuderera (<2%) mhinduro dzinowanzoshandiswa.
Nzvimbo dzekunze: tembiricha, calibration yezviridzwa zvekuyera, etc. inogona kukonzera zvishoma pH kutsauka.

4. PH Zvinodiwa muHPMC Kushandisa Chiitiko
Kana HPMC ichishandiswa mukudya uye mushonga, kugadzikana kwayo uye pH ADPPTBLICKILE inoda kutariswa. Semuenzaniso, mumahwendefa emishonga uye mahwendefa ekapu, HPMC anoshandiswa seanoshandiswa sedhikeneri, akasimbisa-mumiriri uye anochengetera zvinhu, uye kugadzikana kwePH kwakakosha. Mishonga yakawanda inoda kuburitswa mune imwe chete-isina kwayakarerekera kana zvishoma acidic nharaunda, saka iyo PH hunhu hweHPMC dzakakodzera kwazvo nechinangwa ichi.

Indasitiri yeChikafu: Kana HPMC inoshandiswa sedhizimusi uye stabilizer, inowanzotarisirwa kuti ph kukosha kwayo iri padyo nekusarerekera kuitira kuti usakanganise kuravira uye kugadzikana kwechigadzirwa.
Indasitiri yechechi yechechi: mumahwendefa, HPMC inoshandiswa kudzora kusunungurwa kwezvinodhaka, uye yakagadzikana pH iri padyo nekusarerekera kunobatsira kuchengetedza zvinoitwa nemushonga.

5. Maitiro ekugadzirisa weHPMC mhinduro mhinduro
Kana iyo PH Kukosha kweHPMC solution inoda kuchinjwa mune chaiyo application, inogona kuve yakanaka-yakatemwa nekuwedzera acid kana alkali. Semuenzaniso, chidiki chidiki cheDilute Hydrochloric acid kana sodium Hydroxide Solution inogona kushandiswa, asi inofanira kunyatsotongwa kuti isabate yakanyanya kuchengetedzwa kwekuchengetedza kana kukanganisa kugadzikana kweHPMC.

Iyo PH Kukosha kweHPMC mumamiriro ekunze kazhinji kazhinji iri pakati pe5,0 ne 8.0, iri pedyo nekusarerekera. Izvo PH Zvinodiwa Zvekushandisa Zvekushandisa Zviitiko zvinogona kunge zvakasiyana, asi kazhinji hapana shanduko yakakosha inodiwa.