Kedu ihe bụ Cellulose ethers

Cellulose ethers bụ ezinụlọ nke ihe mejupụtara kemịkalụ sitere na cellulose, polima eke dị na mgbidi sel nke osisi. A na-emepụta ihe ndị a site na mgbanwe kemịkalụ nke mkpụrụ ndụ cellulose iji webata ọtụtụ otu ọrụ, na-ebute ọtụtụ ihe onwunwe na ojiji. A na-ejikarị cellulose ethers eme ihe n'ụlọ ọrụ dịka owuwu, ọgwụ, nri, ihe ịchọ mma, na nlekọta onwe onye n'ihi ọdịdị ha dị iche iche na ihe bara uru ha. Lee ụfọdụ ụdị cellulose ethers a na-ahụkarị na ojiji ha:

1. Methyl Cellulose (MC):
   • A na-emepụta methyl cellulose site na iji methyl chloride gwọọ cellulose.
   • Ọ na-agbaze n'ime mmiri ma na-emepụta ihe ngwọta doro anya ma dị nro.
   • A na-eji MC eme ihe dị ka ihe na-eme ka ihe sie ike, ihe na-ejikọta ihe, na ihe na-eme ka ihe sie ike n'ihe owuwu (dịka ọmụmaatụ, ngwa agha e ji simenti mee, ihe e ji gypsum mee), ihe oriri, ọgwụ, na ihe ndị e ji elekọta onwe onye.
2. Haịdroxyethyl Cellulose (HEC):
   • A na-emepụta hydroxyethyl cellulose site na iji ethylene oxide meghachi omume na cellulose iji webata otu hydroxyethyl.
   • Ọ na-agbaze n'ime mmiri ma na-emepụta ihe ngwọta doro anya, nke na-agbaze agbaze, nke nwere ezigbo ihe eji ejide mmiri.
   • A na-ejikarị HEC eme ihe dị ka ihe na-eme ka ihe dị arọ, ihe na-agbanwe ọdịdị ahụ, na ihe na-emepụta ihe nkiri na agba, ihe na-eme ka ihe dị nro, ngwaahịa nlekọta onwe onye, ​​na ọgwụ.
3. Selulose Hydroxypropyl Methyl (HPMC):
   • A na-emepụta hydroxypropyl methyl cellulose site na itinye hydroxypropyl na methyl otu n'ime azụ cellulose.
   • Ọ na-egosipụta ihe ndị yiri methyl cellulose na hydroxyethyl cellulose, gụnyere mmiri ịgbaze, ikike imepụta ihe nkiri, na idobe mmiri.
   • A na-ejikarị HPMC eme ihe n'ihe owuwu (dịka ọmụmaatụ, ihe mmado taịlị, ihe eji eme simenti, ihe ndị na-eme ka ihe dị larịị), yana ọgwụ, nri, na ihe nlekọta onwe onye.
4. Cellulose Carboxymethyl (CMC):
   • A na-esi na cellulose enweta carboxymethyl cellulose site na iji sodium hydroxide na monochloroacetic acid gwọọ ya iji webata otu carboxymethyl.
   • Ọ na-agbaze n'ime mmiri ma na-emepụta ihe ngwọta doro anya, nke na-agbaze agbaze, nke nwere ezigbo ihe ndị na-eme ka mmiri sie ike, na-eme ka ọ sie ike, ma na-ejidekwa ya.
   • A na-ejikarị CMC eme ihe dị ka ihe na-eme ka ihe dị arọ, ihe na-ejikọta ihe, na ihe na-agbanwe ihe n'ime nri, ọgwụ, ákwà, akwụkwọ, na ụfọdụ ihe owuwu.

Ndị a bụ ụfọdụ n'ime cellulose ethers a na-ejikarị eme ihe, nke ọ bụla nwere ihe pụrụ iche na ngwa dị iche iche n'ọtụtụ ụlọ ọrụ. Ether cellulose pụrụ iche ndị ọzọ nwekwara ike ịdị, nke e mere ka ọ dabara na ihe achọrọ n'ọtụtụ ngwa dị iche iche.