Nigute ushobora kumenya ivu rya hydroxypropyl methylcellulose?

Ibirimo ivu nikimenyetso cyingenzi cyahydroxypropyl methylcellulose. Abakiriya benshi bakunze kubaza iyo basobanukiwe hydroxypropyl methylcellulose: ivu rifite agaciro ki? Hydroxypropyl methylcellulose ifite ivu rito risobanura ubuziranenge bwinshi; selulose ifite ivu rinini bivuze ko harimo umwanda mwinshi urimo, bizagira ingaruka kumikoreshereze cyangwa kongera umubare winyongera. Iyo abakiriya bahisemo hydroxypropyl methylcellulose, bakunze gucana selile imwe mumuriro bakayitwika kugirango bapime ivu rya selile. Ariko ubu buryo bwo gutahura ntabwo ari siyansi cyane, kuko ababikora benshi bongeramo umuvuduko wo gutwika muri selile. Ku isura, selile ifite ivu rito cyane nyuma yo gutwikwa, ariko mubikorwa, kubika amazi ya hydroxypropyl methylcellulose ntabwo ari byiza cyane.

Nigute dushobora kumenya neza ivu rya hydroxypropyl methylcellulose? Uburyo bwiza bwo gutahura ni ugukoresha itanura rya muffle kugirango umenye.

Igikoresho Isesengura ryuzuye, itanura ryubushyuhe bwo hejuru, itanura ryamashanyarazi.

Uburyo bw'igerageza:

1) Banza, shyira feri ya 30ml ikomeye mumatanura yubushyuhe bwo hejuru hanyuma uyitwike kuri (500 ~ 600) ° C muminota 30, funga irembo ryitanura kugirango ugabanye ubushyuhe mumatara kugeza munsi ya 200 ° C, hanyuma ufate hanze ikomeye hanyuma uyimure kuri desiccator kugirango ukonje (20 ~ 30) min, ipima.

2) Gupima 1.0 g yahydroxypropyl methylcellulosekuringaniza yisesengura, shyira icyitegererezo cyapimwe mubikomeye, hanyuma ushireho ingirakamaro irimo icyitegererezo ku itanura ryamashanyarazi kugirango karubone, ikonje kugeza ubushyuhe bwicyumba, ongeramo aside sulfurike (0.5-1.0), hanyuma uyishyire ku itanura ryamashanyarazi kugirango karubone yuzuye. Noneho wimuke mu itanura ryubushyuhe bwo hejuru, utwike kuri (500 ~ 600) ℃ kumasaha 1, uzimye ingufu z itanura ryubushyuhe bwo hejuru, mugihe ubushyuhe bwitanura bugabanutse munsi ya 200 ℃, ubikuremo ubishyire muri desiccator. gukonjesha (20 ~ 30) min, hanyuma ugapima kuringaniza isesengura.

Kubara Igisigisigi gisigaye kibarwa ukurikije formula (3):

m2-m1

Igisigara gisigaye (%) = × 100 ……………………… (3)

m

Muri formula: m1 - misa yubusa ikomeye, muri g;

m2 - ubwinshi bwibisigisigi kandi bikomeye, muri g;

m - misa yicyitegererezo, muri g.