Zvinhu zvinokanganisa HPMC viscosity

HydroxyPropyl methylcellose (HPMC) ndeye cellulose inobviswa zvakanyanya kushandiswa muminda yezvinhu zvekuvaka, mishonga uye chikafu uye cosmetics. Iyo viscosity yeHPMC ndeimwe yeakakosha performance zviratidzo nekuti inobata zvakananga iyo fluidity, inobatanidza zvivakwa, zvine humwe hunhu hwezvinyorwa. Naizvozvo, vanonzwisisa zvinhu zvinokanganisa vhiza reHPMC rakakosha pakushandisa kwayo uye kugadzira zvigadzirwa muminda dzakasiyana siyana.

1. Mhedzisiro yehuremu hwemanyorerwe
Uremu hwehurume hweHPMC zvine hunhu hwakakosha pane viscosity. Iyo yakakura uremu hwemanyorerwe, yakakwira iyo viscosity yemhinduro. Izvi zvinodaro nekuti HPMC ine hupamo hombe inorema inorema mataira akaomarara molecular keteni mumhinduro, iyo inowedzera kupokana kwemukati kwemhinduro uye inotungamira mukuwedzera kwe viscosity. Panguva imwecheteyo, gorofu hombe rinoremerwa zvakare rinokonzeresa shanduko yakasimba mumhinduro panguva yekuyerera, izvo zvakakosha kuti utorezve kuita kwejasi, zvinoshambidza uye zvimwe zvinoshandiswa. Ose ari maviri ekuedza uye zvidzidzo zvedzidzo zvakaratidza kuti viscosity uye suremu hweHPMC roga ratidza hukama hwemagetsi, kureva kuti, iyo yekuona haina kuwedzera servillar uremu hunowedzera.

2. Kufurira kweiyo degree rekutsiva
Dhigirii rekutsiva kweiyo hydroxypropropyl (-ch3chohch2-) uye methyl (-ch3) mapoka muHPMC chinhu chakakosha chinokanganisa iyo solubility newiscosity. Dhigirii rekutsiva rinoreva chikamu chemapoka e hydroxyl mapoka (-Ooh) pane hpmc molecular keteni yakatsiva ne hydroxyprusl uye methyl mapoka. Kana degree rekutsiva mapoka eHydroxpropropropropropsl dzinowedzera, kuwirirana pakati pemaketani eHPMC kuchinweretesa, uye ngetani dzechiratidzo dzichava nyore kuwedzera mhinduro, nekudaro achiwedzera zviso zvemhinduro. Nepo kuwedzera kweMethyl mapoka kuchawedzera kuwedzera iyo hydrohobicity yeiyo mhinduro, zvichikonzerwa nekusagadzikana kuderera, nekudaro kukanganisa zvevatenzi. Kazhinji, HPMC ine mwero wakakwira wekutsiva ane yakakwirira solubility uye viscosity, uye inogona kusangana nezvido zvevisiko zveminda yakasiyana.

3. Mhedzisiro yeKugadzirisa Solution
Iyo viscosity yeHPMC mhinduro yakanyatsoenderana neyakaenzana. Sezvo kusangana kwemhinduro kunowedzera, kudyidzana kuri pakati pemamorkwe kunowedzera zvakanyanya, zvichikonzera visikopa yemhinduro yekukwira zvakanyanya. Pakukadzika mamaira, mamaira eHPMC anovapo mumhando yemaketani asina kuroora, uye zvikwangwani zvinoshanduka zvakanyatsonaka; Kana iko kusangana kwasvika pane imwe kukosha kwakakosha, HPMC mamorekuru vanopinda uye kuwirirana, vachiumba chimiro chetiweki, vachikonzera visikoka kuwedzera nekukurumidza. Uye zvakare, kuwedzera kwekusimbisa kwekugadzirisa zvakare kuchikonzera zvakare HPMC kuratidzira Shear kurema, ndiko kuti, visikoka ichawedzera pasi pechiito chikuru chesimba.

4. Simba reiyo solvent mhando
Type yeSolvent zvakare ine zvakakosha kukanganisa pane iyo solubility uye viscosity yeHPMC. HPMC inogona kunyungudutswa mumvura uye imwe organic sol, ethanol, ethanol, acetone), asi yakasiyana solets ine yakasiyana-siyana yekubatanidza uye kupararira. Mumvura, HPMC inowanzoitika mune yakakwira viscossity fomu, nepo mu organic solses iyo inoratidzira kuderedza viscosity. Iyo polarity yeiyo solvent ine yakanyanya kukanganisa pane viscosity yeHPMC. Sol Solvent nePollarity Polarity (yakadai semvura) ichasimudzira iyo hydration yeHPMC mamorekuru, nekudaro inowedzera zvisizvo zvemhinduro. Isina-polar soles haigoni kunyungudika hpmc, ichikonzera mhinduro yekuratidzira kuderera viscosity kana isina kukwana kupaza. Uye zvakare, kusarudzwa uye huwandu hwemhedzisiro solvent zvichakanganisa zvakanyanya kuita kweViscossity performance yeHPMC.

5. Mhedzisiro yekupisa
Tembiricha ndiyo imwe yezvinhu zvakakosha zvezvakatipoteredza zvinokanganisa zvevasokisi zveHPMC. Kazhinji, iyo viscosity yeHPMC inoderera sezvo tembiricha inowedzera. Izvi zvinodaro nekuti tembiricha yakanyanya ichaparadza hydrogen zvisungo uye zvimwe zvekupindirana pakati pechiketani, vachiita machira anonyora anotsvedza, nekudaro achideredza zviso zvemhinduro. Pane imwe tembiricha yakakwirira, HPMC inogona kunyange kuumba gelation kuti iite chimiro chakagadzikana chegweta. Iyi yedhishingi inopisa nzvimbo inoshandiswa zvakanyanya mune zvekuvakisa zvigadzirwa uye maindasitiri ezvekudya sezvinopa viscosity yakakodzera uye rutsigiro rwechimiro. Uye zvakare, tembiricha ine mhedzisiro dzakasiyana pane zvevasokisi yeHPMCs ine akasiyana ma molecular zviyero uye madhigiri ekutsiva. Kazhinji, hpmc with high molecular huremu uye madhigirii akakwira ekutsiva anonzwisisika nekuchinja kwekushisa.

6. Mhedzisiro yePP kukosha
Kunyangwe HPMC isingarere polymer uye kazhinji isingateerere kune ph kuchinja, viscosity yayo inogona kunge ichiri kukanganiswa pasi phe mamiriro akanyanya (senge mune yakasimba acid kana alkaline nharaunda). Izvi zvinodaro nekuti yakasimba acid kana alkali nzvimbo ichaparadza iyo molecular chimiro cheHPMC uye kuderedza kugadzikana kwayo, zvichikonzera kuderera kwemisangano. Kune zvimwe zvinoshandiswa, sekugadzirira kwemishonga uye zvekudya zvekudya, ph kutonga kwakanyanya kuve nechokwadi chekuti HPMC viscosity inosara mukati meiyo yakakodzera huwandu.

7. Mhedzisiro yeIonic Simba
Simba reionic mumhinduro zvakare rinobatawo maitiro ehukisheni yeHPMC. Nzvimbo yakakwirira yeIonic inochengetedza mhosva yeHPMC Maketani, kuderedza kurudziro yemagetsi pakati pemaketani emanyorero, zvichiita kuti zvive nyore kune mamorekuru kuti vaswedere, nekudaro vachideredza viscosity. Kazhinji, paunenge uchigadzirira HPMC Mvura mhinduro, iyo ion yekukasira inofanirwa kudzorwa kuti ive nechokwadi chekutakura viscosity, iyo inonyanya kukosha mumishonga yemishonga uye yekunyora.

Iyo viscosity yeHPMC inokanganiswa nezvinhu zvakawanda, kusanganisira molecular uremu, degree rekutsiva, mhinduro yekutsiva, solvent mhando, tembiricha, tembiricha uye ionic simba. Molecular uremu uye degree rekutsiva rinonyanya kuona iyo intrinsic viscosity hunhu hweHPMC, nepo mamiriro ekunze akadai sekusangana, solvent mhando uye tembiricha inokanganisa kuita kwayo kwekushandiswa kwekushandisa panguva yekushandisa. Mune zvinoshandiswa zvinoshanda, mhando dzeHPMC uye control mamiriro ezvinhu anoda kusarudzwa zvichienderana neyechokwadi inoda kuwana yakakodzera viscosity perform. Kubatanidzwa kwezvinhu izvi kunotema kuita uye masango eHPMC, kupa rutsigiro rwezvekutsigira kwekushandisa kwayo mukuvaka, mishonga yemishonga, chikafu uye mamwe maindasitiri.