Cellulose etherbụ okwu mkpokọta maka ọtụtụ ihe ndị sitere na cellulose eke (owu a nụchara anụcha na pulp osisi, wdg) site na etherification. Ọ bụ ngwaahịa nke e mepụtara site na mgbanwe nke otu hydroxyl na cellulose macromolecules nke otu ether mepụtara, ọ bụkwa ihe sitere na cellulose dị n'okpuru ala. Mgbe eterification gasịrị, cellulose na-agbaze na mmiri, na-agwakọta ngwọta alkali, na ihe mgbaze organic, ma nwee ihe onwunwe thermoplastic. E nwere ọtụtụ ụdị cellulose ethers, nke a na-ejikarị eme ihe n'ụlọ ọrụ dịka owuwu, simenti, mkpuchi, ọgwụ, nri, mmanụ ala, kemịkalụ kwa ụbọchị, ákwà, ime akwụkwọ, na ihe ndị ọzọ eletrọnịkị. Dịka ọnụọgụgụ ihe ndị na-anọchi anya ya si dị, enwere ike kewaa ya n'ime otu ethers na ethers agwakọtara agwakọta, dịka ionization si dị, enwere ike kewaa ya n'ime ionic cellulose ethers na non ionic cellulose ethers. Ugbu a, usoro mmepụta nke ngwaahịa ionic cellulose ether ionic bụ nke tozuru oke, dị mfe imepụta, ọnụ ahịa ya dịkwa ala. Ihe mgbochi ụlọ ọrụ ahụ dị obere, a na-ejikwa ya eme ihe n'ihe gbasara ihe mgbakwunye nri, ihe mgbakwunye ákwà, ụlọ ọrụ kemịkalụ kwa ụbọchị, wdg. Ọ bụ ngwaahịa bụ isi a na-emepụta n'ahịa.
Ugbu a, ihe isi ike bụ isicellulose ethersN'ụwa bụ CMC, HPMC, MC, HEC, wdg. N'ime ha, CMC nwere mmepụta kachasị ukwuu, na-aza ihe dị ka ọkara nke mmepụta zuru ụwa ọnụ, ebe HPMC na MC na-aza ihe dị ka 33% nke ọchịchọ zuru ụwa ọnụ, HEC na-aza ihe dị ka 13% nke ahịa zuru ụwa ọnụ. Ojiji kachasị mkpa nke Carboxymethyl cellulose (CMC) bụ ịsa ákwà, nke na-aza 22% nke ọchịchọ ahịa dị ala. A na-ejikarị ngwaahịa ndị ọzọ eme ihe n'ihe owuwu ụlọ, nri na ọgwụ.
Oge ozi: Julaị-13-2023




