Ndeupi musiyano uripo pakati peHPMC uye MHEC?

HydroxyPropyl methylcellose (HPMC) uye methyl hydroxekyl cellyloseet (mhec) idzo maindasitiri akasiyana-siyana akadai sekuvaka, mishonga, chikafu, uye zvidyarwa. Pasinei nekugovana kufanana mune zvivakwa zvavo zvemakemikari uye zvikumbiro, kune misiyano yakasarudzika pakati pezviviri.

1. Chemical composition:

HPMC (HydroxyPropyl methylcellose): HPMC ndeye imwe-synthetic polymer yakawanikwa kubva ku cellulose. Iyo inogadzirwa kuburikidza nemakemikari kugadziridzwa kwemheremalose, kunyanya kubviswa kubva kune huni pripm kana machira ekotoni. Iko kugadziridzwa kunosanganisira kurapa cellulose neAlkali

Mhec (methyl hydroxythyl celluloseet): MheC iri zvakare cellulose ether yakawanikwa kuburikidza nemakemikari kugadziridzwa kwemakomputa. Zvakafanana neHPMC, iyo inotora shanduko yekuchinja kwekusuma methyl uye hydroxylwl mapoka kune iyo cellulose backbone. MheC inogadziriswa nekubata cellulose neAlkali, ichiteverwa nekutsvaira ne methyl chloride uye ethylene oxide.

2. Chemical chimiro:

Nepo mese hpmc uye mhec kugovera cellulose backbone, ivo vakasiyana murudzi uye kurongeka kwemapoka anotsiva akasungirirwa kune ino backbone.

Hpmc chimiro:
Hydroxyprospropyl mapoka (-ch2chohch3) uye methyl mapoka (-ch3) anogovaniswa zvisina mwero pamwe neCellulose Chain.
Iyo chiyero che hydroxyprupyl kune methyl mapoka anosiyana zvichienderana neyekugadzira maitiro uye zvaunoda zvivakwa.

MheC chimiro:
Methyl uye hydroxytHyl mapoka (-ch2chohch3) akabatanidzwa kune iyo cellulose backbone.
Iyo chiyero che methyl kune hydroxyteth mapoka anogona kugadziridzwa panguva yeSynthesis kuti uwane zvivakwa.

3. Zvivakwa:

HPMC Zvivakwa:
HPMC inoratidza yakakwira mvura solubility, kugadzira pachena uye viscous mhinduro.
Iyo ine yakanaka firimu-yekuumba midziyo, ichiita kuti ive yakakodzera kune mafaro anoda kufambisa firimu.
HPMC inopa yakanakisa kuhukama uye kusunga zvivakwa, kuishandira kubatana mune dzakasiyana siyana mafambiro.
Iyo viscosity yeHPMC Solutions inogona kugadziriswa nekugadzirisa iyo degree rekutsiva uye suremu.

MheC Properties:
MheC zvakare inoratidza zvakare mvura solubility, asi iyo solubility inogona kusiyana zvichienderana nedanho rekutsiva uye tembiricha.
Iyo inoumba mhinduro dzakajeka ne pseudoplastic maitiro, kuratidzira shear-kuonda zvinhu.
MheC inopa yakanakisa kuremerwa uye kusimbisa mhedzisiro mune zvemvura masisitimu.
SaHPMC, iyo viscosity yeMheC Solutions inogona kudzorwa nekugadzirisa iyo degree rekutsiva uye rinorema uremu.

4. Zvikumbiro:

HpMc application:
Indasitiri yekuvaka: HPMC inoshandiswa zvakanyanya mumutero-yakavakirwa motsi, magirazi eGypsum anobva, magirazi echiGysum, uye mataira anomhara kuti avandudze kugona, kudzokorora kwemvura, uye kudedera.
Pharmaceutals: HPMC inoshandiswa muzviyo zvechiratidziro, zvinodzorwa-kuburitswa-mafomu, ophthalmic mhinduro, uye gadziriro dzepamusoro nekuda kweiyo firimu-fomu uye mucoadhesive zvivakwa.
Chikafu uye Cosmetics: HPMC inoshanda seMumiriri Akakora, STabilizer, uye Emulsifier mune zvigadzirwa zvekudya, zvinhu zvekuchengetedza pachako, uye zvizoro.

MheC application:
Indasitiri yekuvaka: MheC inowanzo shandiswa mukuumbwa kwemisangano yakadai seyakaomeswa anoshongedza, majekiseni, uye magres ekuwedzera kuchengetedzwa kwemvura, achishanda, uye kuderedza.
Pendi uye kuunganidza: MheC inoshandiswa seyekunyorera modifier mumvura-yakavakirwa mapepa emvura, majasi, uye anodzivirira kusimbisa, uye kuvandudza zvivakwa zvekushandisa.
Formaceutical Formons: Mhec Inowana Zvikumbiro mumishonga yemishonga, funghalmic gadziriro, uye inodzorwa-sununguko madhiri emubatanidzwa uye kusimbisa mumiririri.

5 Zvakanakisa:

Zvakanakira HPMC:
HPMC inopa yepamusoro firimu-inogadzira zvivakwa, ichiita kuti iite yakakodzera kune tabhegi yehembe dzepiritsi uye dzakadzorwa-kuburitswa.
Izvo zvinoratidzira kuderedza kwakanakisa uye hunhu hwekusunga, kuwedzeredza kubatana kwezvakasiyana siyana.
HPMC inopa kuisanganisira mukugadzirisa viscosity uye kugadzirisa mhinduro dziripo.

Zvakanakira MheC:
MheC inoratidza kusarudzika uye kusimbisa mhedzisiro mune zvemukati masisitimu, zvichiita kuti ive yakakodzera pendi, kuvaka, uye mishonga yemishonga.
Iyo inopa yakanaka mvura yekuchengetwa kwemvura, kuvandudza kushanda uye kuderedza muzvakagadzirwa-zvakavakirwa zvigadzirwa.
MheC inopa pseudoplastic maitiro, kubvumira kuve nyore kushandisa uye kuvandudza maitiro ekuyerera mumatangi uye pendi.

Nepo mese hpmc uye mhec ari cellalose ana manyorerwe pamwe chete, ivo vanoratidza misiyano mumamisiyano mavo emakemikari, zvivakwa, zvivakwa, uye zvakanakira. HPMC inozivikanwa neyakaomesesa firimu-inogadzira uye inoshambadzira zvivakwa, nepo mhec inodarika mukuita, kusimbisa, uye kudzokorora kwemvura. Kunzwisisa izvi kupokana kwakakosha kusarudza iyo yakakodzera kwazvo cellulose ether yekunyora maindasitiri akasiyana-siyana.