Tiantai Cellulose kambani inonyanya kutsvagisa, kusimudzira, kugadzira uye kutengesa kusimudzira kwehydroxypropyl methyl cellulose HPMC zvigadzirwa.Kuchena kweHPMC hydroxypropyl methyl cellulose ndiyo inonyanya kunetsa chigadzirwa chinyorwa chevagadziri nevashandisi.Pano isu hydroxypropyl methyl cellulose vagadziri kuti tipe yakadzama sumo, ndinovimba kuverenga kubatsira.
Kutsunga kwekuchena kweHPMC hydroxypropyl methyl cellulose
Nheyo yacho
Hydroxypropyl methyl cellulose HPMC haina kunyungudika mu80% ethanol.Mushure mekunyungudika uye kugezwa kakawanda, 80% ethanol yakanyungudika mumuenzaniso inoparadzaniswa uye inobviswa kuti iwane yakachena hydroxypropyl methyl cellulose HPMC.
Reagent
Kunze kwekunge zvataurwa neimwe nzira, mareagents chete akasimbiswa kuve ekuongorora akachena uye akasvibiswa kana deionized mvura kana mvura yehutsanana hwakafanana ichashandiswa mukuongorora.
95% ethanol (GB/T 679).
Ethanol, 80% solution, dilute 95% ethanol (E.2.1) 840mL nemvura kusvika pa1L.
BMI (GB/T 12591).
Chiridzwa
Zvishandiso zverabhoritari zvakajairika
Magnetic heat stirrer, inobvongodza tsvimbo kureba inenge 3.5cm.
Sefa crucible, 40mL, aperture 4.5μm ~ 9μm.
Girazi repamusoro ndiro, φ10cm, gomba repakati.
Beaker, 400mL.
Constant tembiricha yekugeza mvura.
Ovheni, inogona kudzora tembiricha pa105 ℃ ± 2 ℃.
Chirongwa
Nyatsoyera sampuli 3g (chaiyo kusvika 0.001g) mubeaker inorema, wedzera 150mL 80% ethanol pa 60 ℃ ~ 65 ℃, isa magineti tsvimbo mune magineti yekupisa inosimudzira, vhara dhishi repamusoro, isa thermometer pakati. gomba, batidza zvibatiso zvekudziisa, gadzirisa kumhanya kuti udzivise kupfachuka, uye chengetedza tembiricha iri pa60℃ ~ 65℃.Kukurudzira 10 min.
Rega kubvongodza, isa beaker mune inogara tembiricha yekugezera yemvura ye60 ℃ ~ 65 ℃, mira wakamira kuti ugadzirise chinhu chisinganyungudika, uye udururire mvura ine simba zvakanyanya sezvinobvira mune yekugara uremu yekusefa crucible.
Wedzera 150mL 80% ethanol pa60 ℃ ~ 65 ℃ kubeaker, dzokorora zviri pamusoro apa nekukuchidzira nekusefa, wobva wageza beaker, dhishi repamusoro, tsvimbo inobvongodza uye thermometer zvine 80% ethanol pa60 ℃ ~ 65 ℃, kuitira kuti. iyo insoluble nyaya inotamirwa zvachose kune crucible, uye kuwedzera kushambidza zviri mukati me crucible.Kusveta kunofanira kushandiswa panguva yekushanda uku uye kuomeswa kwekeke kunofanira kudziviswa.Kana zvidimbu zvikapfuura nepasefa, kuyamwa kunofanirwa kudzikiswa.
Cherechedza: inofanira kuve nechokwadi kuti sodium chloride mumuenzaniso inoshambidzwa zvachose ne80% ethanol.Kana zvichidikanwa, 0.1mol/L sirivheri nitrate solution uye 6mol/L nitric acid inogona kushandiswa kutarisa kuti filtrate ine chloride ions.
Patembiricha yemumba, zviri mukati zvakagezwa kaviri ne95% ethanol pa50mL, uye pakupedzisira ne ethyl mi20mL yekugezeswa kwechipiri.Nguva yekusefa haifanire kunge yakareba.Iyo crucible yakaiswa mubeaker uye inopisa pabhavhu rekugezera kusvikira pasina ethyl mi kunhuwa kwakawanikwa.
Cherechedza: kushambidza ne ethyl mi zvakakosha kuti ubvise zvachose ethanol kubva kune insoluble substance.Kana ethanol isina kubviswa zvachose pamberi pekuomeswa kwevheni, kubvisa zvachose hakugoneki panguva yekuomeswa kweovheni.
Iyo crucible uye beaker yakaiswa muovheni pa105 ℃ ± 2 ℃ yekuomeswa kwe2h, yozoendeswa kune yakaoma kuti itonhodze kwe30min uye kuyerwa, uye yakaomeswa kwe1h uye kuyerwa kutonhora kusvika shanduko yehuremu isingapfuuri 0.003g. .Muchiitiko chekuwedzera kwehuwandu panguva ye1h yekuomesa, iyo yakaderera inocherechedzwa misa ichavepo.
Mibairo yakaverengerwa
Kuchena kweHPMC hydroxypropyl methyl cellulose yakaverengerwa sechikamu chechikamu P, uye kukosha kwakaratidzwa se%
M1 - uwandu hwezvinhu zvakaomeswa zvisingasviki, mumagiramu (g);
M0 - Misa yechikamu chekuedza, mumagiramu (g);
W0 - Hunyoro uye hunyoro hwemukati hwemuenzaniso, %.
Ukoshi hwemasvomhu hwezviyero zviviri zvakaenzana hunodzikiswa kusvika padanho redesimali semugumisiro wekuyera.
Pkugadzirisa
Musiyano wakakwana pakati pezviyero zviviri zvakazvimiririra zvakawanikwa pasi pemamiriro ekudzokorora hazvisi mukuru kupfuura 0.3%, kunze kwekunge yakakura kupfuura 0.3% isingapfuure 5%.
Nguva yekutumira: Feb-14-2022