Lọwọlọwọ, imọ-ẹrọ iyipada ti cellulose ni akọkọ fojusi lori etherification ati esterification.Carboxymethylation jẹ iru imọ-ẹrọ etherification.Carboxymethyl cellulose (CMC) ti wa ni gba nipasẹ carboxymethylation ti cellulose, ati awọn oniwe-olomi ojutu ni o ni awọn iṣẹ ti thickening, fiimu Ibiyi, imora, ọrinrin idaduro, colloidal Idaabobo, emulsification ati idadoro, ati ki o ti wa ni o gbajumo ni lilo ninu fifọ, epo, ounje, oogun, aṣọ ati iwe ati awọn ile-iṣẹ miiran.O jẹ ọkan ninu awọn ethers cellulose pataki julọ.