Nhanganyaya yeHEC (HydroxyHyl Cellulose) uye Hpmc (HydroxyPropyl Methylose)
Hydroxethyl Cellulose (Hec) uye hydroxyprusyl methylese (HPMC) pane maviri akakosha cellulose Frivatives akashandiswa mune dzakasiyana maindasitiri, kusanganisira mishonga yemishonga, kuvaka, kuchengetedza, uye chikafu. Zvese Hec uye HPMC inotorwa kubva kuCellulose, iyo yakanyanya kuwanda yepamhepo inowanikwa mumadziro emusero, inozivikanwa kune yakasimba simba uye kuwanda.
HydroxytHyl Cellulose (Hec)
Makemikari chimiro uye zvivakwa
HydroxytHyl Cellulose ndeye isiri-ionic, yakadzika-mvura polymer yakatorwa kubva ku cellulose kuburikidza nekutsvagira. Chemakero chemuzvemakemikari chinosanganisira ethylene oxide mapoka (-ch2ch2oh) yakanamatira kune cellulose backbone, iyo inokwazisa iyo mvura yekunyora uye yakakora mvura. HEC inoonekwa seyakachena kusvika pa-chena poda uye inozivikanwa kune yayo yepamusoro viscosity uye kugona kwemafirimu-ekugadzira firimu.
Synthesis maitiro
Iyo synthesis yehyozi inosanganisira maitiro emheremellose ine ethylyone oxide pasi pealkaline mamiriro. Maitiro acho kazhinji anosanganisira:
Allkalization: cellulose inobatwa neyakagadziriswa alkali, senge sodium hydroxide, kuumba alkali cellulose.
Kuwedzera: Etleylene oxide kunobva kuwedzerwa kuAlkali Cellalose, zvichikonzera kuumbwa kwehydroxytl cellulose.
Kusarerekera uye kucheneswa: Iyo yekuita musanganiswa inotora uye yakanatswa kubvisa zvigadzirwa-zvigadzirwa, zvichisimbisa chigadzirwa chekupedzisira cheHEC.
Zvishandiso
Hec inoshandiswa kune dzakasiyana-siyana maindasitiri nekuda kwezvinhu zvaro zvakasarudzika:
Mishonga: Inoshandiswa seyemumiririri wakakura, firimu-raimbova, uye stabilizer mumatura epamusoro, mafuta, uye mafuta.
Kuchengeta Kwemunhu: Inowanikwa muShampoos, inogutsa, lotions, uye sapos sesapuro sediki uye emulsifier.
Pendi uye kuungana: Kuwedzeredza viscosity, kuchengetwa kwemvura, uye mafirimu ekugadzira mafirimu emvura mumvura-yakavakirwa mvura.
Kuvaka: Inoshanda seBinder, Thickener, uye Kuchengetwa Kwemuwi Wemumiriri muComent uye Gypsum-based zvigadzirwa.
Zvakanakira
Hec inopa akati wandei zvakanakira:
Isiri-ionic nature: inoita kuti ienderane nehuremu hwakawanda hweIonic uye isiri-ionic inowedzera.
Mvura Solubility: Inopfeka zviri nyore mumvura inotonhora uye inopisa, kugadzira mhinduro dzakajeka.
Kubudirira Kubudirira: Inopa kudzora kwakanakisa kwekufunga mune dzakasiyana siyana mafambiro.
BiocompriChiction: Yakachengeteka yekushandiswa mune mishonga uye yeyako yekuchengetedza zvigadzirwa.
Hydroxyprupyl methylcellose (HPMC)
Makemikari chimiro uye zvivakwa
HydroxyPropyl methylcellose ndeimwe isiri-ionic cellows ether mapoka muCellulose Molecule (-Och3) uye hydroxyprupyl (-ch2chohch3) mapoka. Uku kushandurwa kunopa kune akasiyana e-fermal emagetsi emagetsi uye kunoita hpmc svutugadzike mumvura inotonhora uye inopisa. HPMC inowanikwa zvakare seyakachena kusvika kune chena-chena poda.
Synthesis maitiro
Kugadzirwa kweHPMC kunosanganisira maitiro akafanana ekuwedzera:
Alkalization: cellulose inobatwa neisimba alkali kuumba alkali cellulose.
Eteraifition: Musanganiswa weMetHyl Chloride uye PropyLe Oxide inowedzerwa kuAlkali Cellalose, inotungamira kuumbwa kwehydroxyprupylculose.
Kusarerekera uye kucheneswa: Musanganiswa wakasarudzika, uye kunatswa matanho anoitwa kuti uwane iyo yekupedzisira HPMC chigadzirwa.
Zvishandiso
HPMC's tisiyasility inobvumidza kuti ishandiswe muminda dzakasiyana-siyana:
Mishonga: inoita seyekudzoserwa-kuburitswa mumiriri, binder, uye mafirimu-ekubatanidza zvinhu zvakarongeka.
Indasitiri yeChikafu: Inoshanda sedhizimusi, stabilizer, uye emulsifier mune yakagadziriswa chikafu.
Kuvaka: Inoshandiswa seanotenda, kudzokorora kwemvura, uye kunamatira mumutero-kubva plasters.
Kuchengetwa Kwemunhu: Inowanikwa mu mazino, shampoos, uye marara emidziyo yayo yekukasira uye yakaomarara.
Zvakanakira
Hpmc inofarirwa nekuda kwezvikonzero zvakati:
Thermal Gelation: Inoratidza Glation pane kupisa, inobatsira mune zvimwe zvimiti zvemubvunzo uye zvekudya zvekudya.
Solubility: soluble mumvura inotonhora uye inopisa, ichibvumira kushandiswa kwemabasa akasiyana siyana mune dzakasiyana mafomu.
Mafirimu-ekugadzira kugona: inogadzira mafirimu akasimba, anochinjika, akakodzera kuti zvibodzwa uye zvinodzorwa-zvakarongeka.
Asiri-Kutadza: Yakachengeteka yekushandiswa mune zvekudya uye pharmaceutical application, ine yakanaka biocomputer.
Kuenzanisa kwehwanda uye hpmc
Zvakafanana
Mavambo: ese ari maviri anotorwa kubva ku cellulose uye govana maitiro akafanana ekugadzira anosanganisira kuwedzerwa.
Zvivakwa: Zvese HEC uye HPMC isiri-Ionic, yemvura-mhepo-manyorama polykenine ine yakanaka, firimu-inoumba, uye inosimbisa zvivakwa.
Zvikumbiro: Ivo vanoshandiswa mune dzakasiyana siyana maindasitiri, kusanganisira mishonga yemishonga, kutarisirwa kwako pachako, uye kuvaka.
Misiyano
Makemikari Subsituets: Hec ine hydroxylyl mapoka, nepo HPMC ine nzira uye hydroxpropropyl mapoka.
Zvivakwa zveHPMC Zvinoratidzwa Thermal Glation, Kusiyana neHeC, zvichiita kuti zviite zvakanyatso mayoreti apo kupisa-kunyengedzwa magasi kunobatsira.
Solubility: Nepo vese vari madiki, kuvapo kwemapoka ehuma
Hydroxethyl Cellulose (Hec) uye hydroxypropyl methylcellose (HPMC) zvakakosha meruvanti zvakawandisa zvemaindasitiri akasiyana emakemikari emakemikari ane akasiyana emakemikari uye mashandiro. HEC inonyanya kukosheswa kwazvo zvevakaipa zvaro uye kuwirirana kwakasiyana siyana, nepo HPMC ichisiyaniswa neyakagadzirwa neyakagadzirwa emagetsi emagetsi uye yakawandisa solubility. Kunzwisisa zvivakwa, synthesis, uye mashandisiro evazhinji mapolymers anobatsira mukusarudza iyo yakakodzera cellulose inodiwa zvido zveindasitire
Kutumira Nguva: Kukadzi-18-2025