HydroxyPropyl methylcellose (HPMC) ndeye yakakosha cellulose ether inowana zvakanyanya muminda yakawanda yeindasitiri nekuda kwezvinhu zvakasarudzika zvemuviri uye zvemakemikari. Zvivakwa zvayo zvivakwa ndezvimwe zvezvivakwa zvakakosha zveHPMC, zvakananga zvinokanganisa mashandiro azvo mumanyorero akasiyana siyana.
1. Basic Properties yeHPMC
HPMC is nonitic cellulose yakawanikwa nekutsiva chikamu cheiyo hydroxyl mapoka (-oh) muCellulose Molecule mapoka (-Och3) uye hydroxyprosproproproproproproprops (-Och2ch (oh) ch3). Iyo ine yakanaka solubility mumvura uye imwe organic sol soles, kugadzira yakajeka colodal mhinduro. Iyo viscosity yeHPMC inonyanya kutsanangurwa nehuremu hwayo, degree rekutsiva (DS, degree rekutsiva) uye kutsiva kugovera.
2. Kutsunga kweViscosity yeHPMC
Iyo viscosity yeHPMC Solutions inowanzo kuyerwa uchishandisa rotcational parcometer kana gacillary viscometer. Kana kuyera, kutarisisa kunofanirwa kubhadharwa kune iyo yekuisa pfungwa, tembiricha uye Shearicha yeiyo mhinduro, sezvo zvinhu izvi zvinogona kukanganisa zvakanyanya kukosha kweViscosity.
Kugadzirisa mhinduro: Iyo viscosity yeHPMC inowedzera nekuwedzera kwekugadzirisa mhinduro. Kana iko kushushikana kweHPMC Solution yakaderera, kuwirirana pakati pemamolekyuli kushaya simba uye viscosity yakaderera. Sezvo kuunganidzwa kwekuwedzera, iyo intanglement uye kudyidzana pakati pemamorekuru kunowedzera, kukonzera kuwedzera kwakakosha muViscosity.
Kupisa Kazhinji, sezvo tembiricha ichiwedzera, iyo visikopa yeHPMC Soluol mhinduro ichaderera. Izvi zvinokonzerwa nekuwedzera tembiricha zvichitungamira kuwedzera molecular kufamba uye kushaya simba mukuwirirana. Inofanira kucherechedzwa kuti HPMC ine madhigirii akasiyana ekutsiva uye suremu ihwo hune kwakasiyana kwekunzwa kwekushisa.
Shear Rate: HPMC Solutions inoratidzira pseudoplastic (shear yekufungidzira) maitiro, kureva kuti viscosity yakakwira pane yakaderera Shear mitengo uye inoderera kune yakakwira Shear mitengo. Maitiro aya anokonzerwa nemasimba masimba anoenderana nemaketani emanyorose padivi penzira yekubereka, nekudaro achideredza kupinda uye kutaurirana pakati pemamorita.
3. Zvinhu zvinokanganisa HPMC viscosity
Solecular uremu: uremu hwehurume hweHPMC ndechimwe chezvinhu zvakakosha izvo zvinosarudza zvavakaita. Kazhinji, iyo yakakura uremu, yakakwira iyo viscosity yemhinduro. Izvi imhaka yeHPMC mamorekuru neyekumusoro mhelecular uremu hungangoita kuti ugadzire metwork network, nokudaro ichiwedzera kupokana kwemukati kwemhinduro.
Degree rekutsiva uye kutsiva kugovera: Nhamba uye kugoverwa kwetrikisheni uye hydroxypruppropyl subsituents muHPMC zvakare inobatawo viscosity yayo. Kazhinji, iyo yakakwira mwero weThe nzira yekutsiva (DS), iyo yakaderera viscosity yeHPMC, nekuti yekutanga ye methy istsinji ichaderedza iyo hydrogen yekubatanidza simba pakati pemamorikiti. Iko kusuma kwehydroxypruppropyl vanowedzera vanozowedzera kuwirirana, nekudaro vanowedzera viscosity. Uye zvakare, iyo yunifomu yekugoverwa kwevatsidziti inobatsira kuumba solution yekugadzirisa uye kuwedzera iyo visikopa yemhinduro.
PH Kukosha kweMhinduro: Kunyangwe HPMC isisiri-Ionic polymer uye viscosity yayo haina hanya nekuchinja kwePH. HPMC, nokudaro ichikanganisa visikopa.
4. Masisitiri eminda yeHPMC
Nekuda kwehunhu hwayo hwakanaka kwazvo hweviscosity, HPMC inoshandiswa zvakanyanya muminda yakawanda:
Zvivakwa zvekuvaka: Muzvivakwa zvekuvaka, HPMC inoshandiswa seanoshandiswa semvura uye mvura inochengetedza mumiririri kuti uvandudze kuita kwekuvaka uye kuwedzera kupaza kupokana.
Indasitiri yechechi yechechi: Hpmc inoshandiswa seyekuchinjika kwemahwendefa, iyo-firimu inogadzira mumiriri emakapuru uye inotakura mishonga yakasimudzirwa.
Indasitiri yezvokudya: HPMC inoshandiswa seanoshandiswa uye stabilizer muindasitiri yechikafu yekugadzirwa kweiyo ice cream, jelly uye madhiri zvigadzirwa.
Dailymical zvigadzirwa zvemakemikari: Muzuva nezuva zvigadzirwa zveMakemikari, HPMC inoshandiswa seyakakwenenzverwa uye stabilizer yekugadzirwa kweShampoo, Shower Gel, mazino, etc.
Iyo viscosity hunhu hweHPMC iri hwaro hwekuita kwayo kwakanakisa mukushandisa kwakasiyana siyana. Nekudzora huremu hwemanyorerwe, degree rekutsiva, uye mhinduro dzeHPMC, viscosity yaro inogona kuchinjwa kuti isasangana nezvinodiwa zvakasiyana. Mune ramangwana, mukudzika kwakadzika pane hukama pakati peHPMC molecular chimiro uye viscosity zvichabatsira kukudziridza hpmc zvigadzirwa nekuita zviri nani kuita uye kuwedzera kuwedzera kwayo minda.
Kutumira Nguva: Jul-20-2024