Cellulose ether bụ polima sịntetik nke e ji cellulose eke mee site na mgbanwe kemịkalụ. Cellulose ether bụ ihe sitere na cellulose eke. Mmepụta nke cellulose ether dị iche na polima sịntetik. Ihe kachasị mkpa ya bụ cellulose, ihe mejupụtara polymer eke. N'ihi nkọwapụta nke usoro cellulose eke, cellulose n'onwe ya enweghị ike imeghachi omume na ihe ndị na-eme ka etherification dị. Agbanyeghị, mgbe ọgwụgwọ nke ihe na-eme ka ọzịza dị, njikọ hydrogen siri ike dị n'etiti agbụ molekul na agbụ ahụ na-ebibi, mwepụta na-arụ ọrụ nke otu hydroxyl na-aghọ cellulose alkali reactive. Nweta cellulose ether.
Njirimara nke ethers cellulose dabere na ụdị, ọnụọgụ na nkesa nke ihe ndị na-anọchi anya ya. Nhazi nke ethers cellulose daberekwa n'ụdị ihe ndị na-anọchi anya ya, ogo nke etherification, ịgbaze na njirimara ngwa ndị metụtara ya. Dịka ụdị ihe ndị dị na yinye molekul si dị, enwere ike kewaa ya na monoether na ether agwakọtara agwakọta. Anyị na-ejikarị mc eme ihe dị ka monoether, na HPmc dị ka ether agwakọtara agwakọta. Methyl cellulose ether mc bụ ngwaahịa mgbe ejiri otu hydroxyl na nkeji glucose nke cellulose eke dochie otu methoxy. Ọ bụ ngwaahịa enwetara site na iji otu methoxy dochie akụkụ nke otu hydroxyl na nkeji ahụ na otu methoxy na akụkụ ọzọ na otu hydroxypropyl. Usoro nhazi bụ [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEmc, ndị a bụ ụdị ndị bụ isi ejiri ma na-ere n'ahịa.
Maka ịgbaze mmiri, enwere ike kewaa ya ụzọ ionic na non-ionic. Ethers cellulose na-agbaze mmiri na-abụkarị usoro alkyl ethers na hydroxyalkyl ethers. A na-ejikarị Ionic Cmc eme ihe n'ihe e ji asa ákwà, ibipụta ákwà na agba agba, nchọpụta nri na mmanụ. A na-ejikarị Non-ionic mc, HPmc, HEmc, wdg eme ihe n'ihe owuwu, mkpuchi latex, ọgwụ, kemịkalụ kwa ụbọchị, wdg. A na-eji ya dị ka ihe na-eme ka ihe sie ike, ihe na-ejide mmiri, ihe na-eme ka ihe sie ike, ihe na-agbasa na ihe na-emepụta ihe nkiri.
Oge ozi: Nọvemba-24-2022