ʻO ka sodium carboxymethyl cellulose (CMC), i kapa ʻia ʻo carboxymethyl cellulose.He kiʻekiʻe-polymer cellulose ether i hoʻomākaukau ʻia e ke kemika hoʻololi ʻana i ka cellulose kūlohelohe, a ʻo kona ʻano i haku ʻia me nā ʻāpana D-glucose i hoʻopili ʻia e nā paʻa β_(14) glycosidic.
ʻO CMC kahi pauka fibrous keʻokeʻo keʻokeʻo keʻokeʻo a i ʻole granules me ka nui o 0.5g/cm3, aneane ʻaʻole ʻono, ʻala ʻole a hygroscopic.
He mea maʻalahi ka hoʻopuehu ʻana o Carboxymethyl cellulose, hana i kahi hopena colloidal akaka i loko o ka wai, a ʻaʻole hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe kūlohelohe e like me ka ethanol.
Ke pH>10, ka pH waiwai o 1% aqueous solution he 6.5≤8.5.
ʻO ka hopena nui penei: ua hoʻopili mua ʻia ka cellulose maoli me ka NaOH, a laila hoʻohui ʻia ka waikawa chloroacetic, a ʻo ka hydrogen ma ka pūʻulu hydroxyl ma ka ʻāpana glucose e hana me ka hui carboxymethyl i loko o ka waikawa chloroacetic.
Hiki ke ʻike ʻia ma ke ʻano he ʻekolu pūʻulu hydroxyl ma kēlā me kēia ʻāpana glucose, ʻo ia hoʻi nā pūʻulu hydroxyl C2, C3 a me C6, a ua hōʻike ʻia ka degere pani o ka hydrogen ma ka pūʻulu hydroxyl o ka ʻāpana glucose e nā hōʻailona kino a me kemika.
Inā hoʻololi ʻia nā hydrogens ma nā pūʻulu hydroxyl ʻekolu ma kēlā me kēia ʻāpana e nā hui carboxymethyl, a laila ua wehewehe ʻia ke degere o ka hoʻololi ʻana he 7-8, me ka pae kiʻekiʻe o ka hoʻololi ʻana o 1.0 (hiki i ka papa meaʻai ke hoʻokō i kēia degere).ʻO ke degere o ka hoʻololi ʻana o CMC pili pono i ka solubility, emulsification, thickening, stability, acid resistance a me ka paʻakai kūʻē o CMC.
Ke hoʻohana nei i nā huahana CMC, pono mākou e hoʻomaopopo piha i nā ʻāpana kuhikuhi nui, e like me ke kūpaʻa, viscosity, acid resistance, viscosity, etc.
ʻOiaʻiʻo, hoʻohana nā ʻano noi like ʻole i ka carboxymethyl cellulose, no ka mea he nui nā ʻano viscosity e hana ana i ka carboxymethyl cellulose, a ʻokoʻa hoʻi nā hōʻailona kino a me nā kemika.Ke ʻike nei i kēia, hiki iā ʻoe ke ʻike pehea e koho ai i ka huahana kūpono.
Ka manawa hoʻouna: Nov-07-2022