Methylcellulose

Methyl cellulose, oo loo soo gaabiyo sida MC, oo sidoo kale loo yaqaan cellulose methyl ether, waa ether nonionic cellulose. Waxay leedahay muuqaalka cad, huruud khafiif ah ama budo cawl khafiif ah, granular ama fiber, ur aan lahayn, aan dhadhan lahayn, aan sun ahayn oo aan xanaaq lahayn, hygroscopic.

Methylcellulose waxay ku milmi kartaa glacial acetic acid, laakiin kuma milmi karaan dareerayaasha organic sida ethanol, ether, acetone, iyo chloroform. Methylcellulose waxay leedahay sifooyin jel kulayl oo gaar ah. Marka lagu milmo biyo kulul oo ka sarreeya 50°C, waxay si degdeg ah u kala firdhi kartaa oo barari kartaa si ay u samaysato jel. Marka heerkulka biyuhu hoos uga dhaco 50°C, waxay ku milmi doonaan biyo si ay u sameeyaan xal aqueous ah. Xalalka aqueous iyo foomamka jel ayaa is dhexgali kara midba midka kale.

Diyaarinta methyl cellulose waxay isticmaashaa cellulose dabiiciga ah sida saxarka suufka iyo saxarka alwaax sida alaabta ceeriin, waxaana lagu daaweeyaa alkali (sida sodium hydroxide, iwm.) si loo helo cellulose alkali ah, ka dibna la nadiifiyo iyadoo lagu darayo methyl chloride. Dareen-celinta heerkul gaar ah, ka dib markii la dhaqo, dhexdhexaadinta, fuuqbaxa, qalajinta iyo hababka kale, sida ku cad nadiifinta alaabta iyo farsamada, methyl cellulose waxaa loo qaybin karaa fasalka daawada methyl cellulose, heerka cuntada methyl cellulose, ujeedada guud ee methyl cellulose iyo alaabta kale. .

Methylcellulose waxay u adkaysataa asiidhka iyo alkalis, saliidaha, kulaylka, noolaha iyo iftiinka. Waxay leedahay dhumuc wanaagsan, filim-samayn, biyo-hayn, emulsifying, qoynta, firdhisan, iyo sifooyin dhejis ah.

Methylcellulose waxa ay leedahay codsiyo kala duwan oo kala duwan oo xagga hoose ah, laga bilaabo dahaarka, khadadka, xabagta ilaa dunta, daabacaadda iyo dheehidda ilaa dawooyinka iyo habaynta cuntada. Warshado badan ayaa leh shuruudaha codsiga alaabta waxayna leeyihiin meel horumarineed oo baaxad leh. Horumar joogto ah oo muddo dheer socday ka dib, warshadaha methyl cellulose ee dalkaygu waxay sameeyeen miisaan cayiman, kala duwanaanta wax soo saarka ayaa noqonaysa mid aad iyo aad u fiican, laakiin waxay u baahan tahay inay noqoto mid kaamilo ah marka la eego miisaanka iyo horumarka dhamaystiran!