Kedu ihe bụ cellulose ethers

Cellulose ethers bụ ezinụlọ nke ogige kemịkalụ sitere na cellulose, polymer eke dị na mgbidi cell nke osisi. A na-emepụta ihe ndị a site na ngbanwe kemịkalụ nke mkpụrụ ndụ cellulose iji webata otu dị iche iche na-arụ ọrụ, na-ebute ihe onwunwe na ngwa dị iche iche. A na-ejikarị ethers cellulose eme ihe na ụlọ ọrụ dịka ihe owuwu, ọgwụ, nri, ihe ịchọ mma, na nlekọta onwe onye n'ihi ọdịdị dị iche iche na ihe bara uru. Nke a bụ ụfọdụ ụdị cellulose ethers na ojiji ha:

1. Methyl cellulose (MC):
   • A na-emepụta Methyl cellulose site n'ịgwọ cellulose na methyl chloride.
   • Ọ bụ soluble na mmiri na-emepụta ihe ngwọta doro anya, viscous.
   • A na-eji MC eme ihe dị ka thickener, ngebichi, na stabilizer n'ime ihe owuwu (dịka ọmụmaatụ, ụrọ simenti, plasta nke gypsum), ngwaahịa nri, ọgwụ na ihe nlekọta onwe onye.
2. Hydroxyethyl cellulose (HEC):
   • A na-emepụta hydroxyethyl cellulose site n'imeghachite cellulose na ethylene oxide iji webata otu hydroxyethyl.
   • Ọ na-agbaze n'ime mmiri ma na-emepụta ihe ngwọta doro anya, viscous nwere ezigbo njide mmiri.
   • A na-ejikarị HEC eme ihe dị ka onye na-agba agba, rheology modifier, na onye na-emepụta ihe nkiri na agba, adhesives, ngwaahịa nlekọta onwe onye, ​​​​na ọgwụ.
3. Hydroxypropyl Methyl Cellulose (HPMC):
   • A na-emepụta Hydroxypropyl methyl cellulose site na iwebata hydroxypropyl na methyl otu n'ime ọkpụkpụ azụ cellulose.
   • Ọ na-egosipụta ihe ndị yiri ma methyl cellulose na hydroxyethyl cellulose, gụnyere mmiri solubility, ike imepụta ihe nkiri, na njide mmiri.
   • A na-eji HPMC eme ihe n'ọtụtụ ebe n'ihe eji arụ ọrụ (dịka ọmụmaatụ, tile adhesives, ciment-based renders, compounds-leveling), yana ọgwụ, ngwaahịa nri, na ihe nlekọta onwe onye.
4. Carboxymethyl cellulose (CMC):
   • A na-enweta Carboxymethyl cellulose site na cellulose site n'ịgwọ ya na sodium hydroxide na monochloroacetic acid iji webata otu carboxymethyl.
   • Ọ na-agbaze n'ime mmiri ma na-emepụta ihe ngwọta doro anya, viscous nwere ọmarịcha ihe na-eme ka ọ sie ike, na-eme ka ọ dị ike, na-ejigide mmiri.
   • A na-ejikarị CMC eme ihe dị ka ihe ngbochi, ihe nkedo, na rheology modifier na ngwaahịa nri, ọgwụ, textiles, akwụkwọ, na ụfọdụ ihe owuwu.

Ndị a bụ ụfọdụ ether cellulose a na-ejikarị eme ihe, nke ọ bụla nwere ihe pụrụ iche na ngwa n'ofe ụlọ ọrụ dị iche iche. Ọpụrụiche cellulose ethers ndị ọzọ nwekwara ike ịdị, ahaziri na kpọmkwem ihe achọrọ na ngwa dị iche iche.