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:

Mbere

2) Gupima 1.0 g yahydroxypropyl methylcellulosekuringaniza yisesengura, shyira icyitegererezo cyapimwe mubikomeye, hanyuma ushireho ingirakamaro irimo icyitegererezo ku itanura ryamashanyarazi kugirango karubone, ikonje kugeza mubushyuhe bwicyumba, ongeramo aside sulfurike (0.5-1.0) ml, 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 ℃, ubusohokane hanyuma ubishyire muri desiccator kugirango ukonje (20 ~ 30) min, hanyuma upime kuringaniza yisesengura.

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.