Nzira yekuona sei huwandu hwemadota ehydroxypropyl methylcellulose?

Kuwanda kwedota chiratidzo chakakosha chehydroxypropyl methylcelluloseVatengi vazhinji vanowanzo bvunza kana vachinzwisisa hydroxypropyl methylcellulose: kukosha kweash chii? Hydroxypropyl methylcellulose ine ash shoma zvinoreva kuchena kwakanyanya; cellulose ine ash yakawanda zvinoreva kuti mune tsvina yakawanda mairi, izvo zvinokanganisa kushandiswa kana kuwedzera huwandu hwekuwedzera. Kana vatengi vakasarudza hydroxypropyl methylcellulose, vanowanzo batidza cellulose zvakananga nemoto voipisa kuti vaedze ash iri mu cellulose. Asi nzira iyi yekuona haina kunyatsoenderana nesainzi, nekuti vagadziri vazhinji vanowedzera zvinokurumidza kupisa mu cellulose. Pamusoro, cellulose ine ash shoma mushure mekutsva, asi mukuita, kuchengetedza mvura kwehydroxypropyl methylcellulose hakuna kunaka zvakanyanya.

Saka tingaziva sei nemazvo huwandu hwemadota ari muhydroxypropyl methylcellulose? Nzira chaiyo yekuziva ndeyekushandisa muffle furnace kuti tione.

Kuenzanisa kweInstrument Analytical, furnace yekupisa kwakanyanya, furnace yemagetsi.

Maitiro ekuyedza:

1) Kutanga, isa chitofu cheporcelain che30ml muchoto chinodziya zvakanyanya uye chipise pa (500~600) °C kwemaminitsi makumi matatu, vhara gedhi rechoto kuti uderedze tembiricha iri muchoto kusvika pasi pe200°C, wobva wabvisa chitofu wochiendesa kuchitofu kuti chitonhore (20~30 min), uchirema.

2) Kurema 1.0 g yehydroxypropyl methylcellulosePachiyero chekuongorora, isa sampuro yakayerwa muchikamu chekupisa, wobva waisa chigadziko chine sampuro pachoto chemagetsi kuti chitonhoreswe, wochitonhodza kusvika patembiricha yemumba, wedzera sulfuric acid (0.5-1.0) ml, wochiisa pachoto chemagetsi kuti chitonhoreswe zvizere. Wobva waenda kuchoto chekupisa kwakanyanya, pisa pa (500~600) ℃ kweawa imwe chete, dzima simba rechoto chekupisa kwakanyanya, kana tembiricha yechoto yadzikira pasi pe200 ℃, chibudise wochiisa mudesicator kuti chitonhore (20~30 min), wozochiyera pachiyero chekuongorora.

Kuverenga Zvisikwa zvemoto zvinoverengerwa zvichienderana nefomula (3):

m2-m1

Zvisaririra zvemoto (%) = ×100……………………(3)

m

Mufomura: m1 – huremu hwechibairo chisina chinhu, mu g;

m2 - huwandu hwezvakasara uye zvinopfungaira, mu g;

m – huremu hwemuenzaniso, mu g.