suma:
Hydroxypropylmethylcellulose (HPMC) uye hydroxyethylcellulose (HEC) ese ari maviri ekuwedzera anoshandiswa mumaindasitiri ezvekudya, ekuzora uye emishonga.Aya ma cellulose anobva kune yakafara tarisiro yekushandiswa nekuda kwekunyungudika kwavo kwemvura kwakasiyana, kusimba kwekusimba, uye kugona kwekugadzira firimu.
1.Chemical chimiro:
HPMC i polymer yakagadzirwa kubva kune cellulose.Iyo inogadzirwa nekemikari inogadzirisa serurosi yechisikigo nekuwedzera propylene oxide uye methyl chloride.HEC zvakare imhando ye cellulose derivative, asi inogadzirwa nekuita zvechisikigo cellulose ne ethylene oxide uye wozoibata nealkali.
2. Solubility:
Ose ari maviri HPMC neHEC anonyungudika mumvura uye anogona kunyungudika mumvura inotonhora.Asi solubility yeHEC yakaderera pane HPMC.Izvi zvinoreva kuti HPMC ine dispersibility iri nani uye inogona kushandiswa zviri nyore mukugadzira.
3. Viscosity:
HPMC uye HEC vane akasiyana viscosity maitiro nekuda kwemakemikari avo.HEC ine yakakwira molecular uremu uye denser chimiro kupfuura HPMC, iyo inopa iyo yakakwirira viscosity.Naizvozvo, HEC inowanzoshandiswa seyakakora muzviumbwa zvinoda high viscosity, nepo HPMC ichishandiswa mukuumbwa kunoda yakaderera viscosity.
4. Kuita firimu-kugadzira:
Ose ari maviri HPMC neHEC ane akanakisa ekugadzira firimu kugona.Asi HPMC ine yakaderera firimu-kuumba tembiricha, zvinoreva kuti inogona kushandiswa pazasi tembiricha.Izvi zvinoita kuti HPMC ive yakakodzera kushandiswa mukuumbwa kunoda kukurumidza kuomesa nguva uye kunamira kuri nani.
5. Kugadzikana:
HPMC uye HEC yakagadzikana pasi peakawanda pH uye tembiricha mamiriro.Zvisinei, HEC inonyanya kukoshesa pH kuchinja kupfuura HPMC.Izvi zvinoreva kuti HEC inofanira kushandiswa mukugadzirwa nepH ye5 kusvika ku10, nepo HPMC inogona kushandiswa muhupamhi hwepH.
6. Application:
Hunhu hwakasiyana hweHPMC neHEC hunoita kuti ive yakakodzera kune akasiyana maapplication.HEC inowanzoshandiswa seyakakora mumiriri mune zvekuzora uye mishonga yekugadzira.Inoshandiswawo sebhainda uye firimu-inogadzira mumiriri mukugadzira piritsi.HPMC inoshandiswa seyakakora, inosimbisa, uye firimu-inogadzira mumiriri mune chikafu, zvinodhaka, uye zvizorwa maumbirwo.Inoshandiswawo se gelling agent mune mamwe maapplication echikafu.
Mukupedzisa:
HPMC neHEC ese ari maviri anobva ku cellulose ane akasiyana zvivakwa anokodzera akasiyana maapplication.Kunzwisisa mutsauko pakati pezviviri izvi zvinowedzera zvinogona kukubatsira kuti usarudze iyo yakakodzera yeresipi yako.Pakazere, HPMC neHEC zvakachengeteka uye zvinoshanda zvekuwedzera izvo zvinopa akawanda mabhenefiti kumaindasitiri ezvekudya, zvekuzora uye emishonga.
Nguva yekutumira: Sep-13-2023