Sodium Carboxymethyl Cellulose | 9000-11-7

ʻO ka carboxy methyl cellulose (CMC) a i ʻole ka cellulose gum he mea ia me nā pūʻulu carboxymethyl (-CH2-COOH) i hoʻopaʻa ʻia i kekahi o nā pūʻulu hydroxyl o nā monomers glucopyranose i hana i ka iwi kuamoʻo cellulose. Hoʻohana pinepine ʻia e like me kāna paʻakai sodium, sodium carboxymethyl cellulose.

Hoʻopili ʻia ia e ka hopena alkali-catalyzed o cellulose me ka waikawa chloroacetic. ʻO nā pūʻulu carboxyl polar (organic acid) e hoʻolilo i ka cellulose soluble a me ka hana kemika. ʻO nā waiwai hana o CMC e pili ana i ka degere o ka hoʻololi ʻana o ka hale cellulose (ʻo ia hoʻi, ʻehia ka nui o nā pūʻulu hydroxyl i komo i ka hopena hoʻololi), a me ka lōʻihi o ke kaulahao o ke ʻano o ka iwi kuamoʻo cellulose a me ke degere o ka hui ʻana. nā mea pani carboxymethyl.

Hoʻohana ʻia ʻo CMC i ka ʻepekema meaʻai ma ke ʻano he viscosity modifier a mānoanoa paha, a no ka hoʻopaʻa ʻana i nā emulsions i nā huahana like ʻole me ka ice cream. Ma ke ʻano he mea hoʻohui meaʻai, loaʻa iā ia ka helu E E466. He mea hoʻohui ia o nā huahana meaʻai ʻole he nui, e like me KY Jelly, toothpaste, laxatives, papaʻai meaʻai, pena wai-wai, detergents, textile size a me nā huahana pepa like ʻole. Hoʻohana mua ʻia no ka mea he kiʻekiʻe kona viscosity, ʻaʻohe mea ʻawaʻawa, a he hypoallergenic. I loko o nā mea holoi lole, hoʻohana ʻia ʻo ia ma ke ʻano he polymer hoʻokuʻu lepo i hoʻolālā ʻia e waiho ma luna o ka pulupulu a me nā lole cellulosic ʻē aʻe e hana ana i kahi pale ʻino i ka lepo i ka wai holoi. Hoʻohana ʻia ʻo CMC ma ke ʻano he lubricant i nā kulu maka non-volatile (nā waimaka artificial). I kekahi manawa, ʻo ia ka methyl cellulose (MC) i hoʻohana ʻia, akā ʻaʻole i hoʻohui ʻia kona mau pūʻulu methyl non-polar (-CH3) i kekahi solubility a i ʻole reactivity kemika i ka cellulose base.

Ma hope o ka hopena mua, hoʻopuka ka hui ʻana ma kahi o 60% CMC me 40% paʻakai (sodium chloride a me ka sodium glycolate). ʻO kēia huahana ka mea i kapa ʻia ʻo Technical CMC i hoʻohana ʻia i nā detergents. Hoʻohana ʻia kahi kaʻina hoʻomaʻemaʻe hou e wehe i kēia mau paʻakai e hana i ka CMC maʻemaʻe i hoʻohana ʻia no nā noi meaʻai, lāʻau lapaʻau a me ka niho niho (toothpaste). Hoʻopuka pū ʻia kahi papa waena "semi-purified", maʻamau i hoʻohana ʻia i nā noi pepa.

Hoʻohana ʻia ʻo CMC i nā lāʻau lapaʻau ma ke ʻano he mānoanoa. Hoʻohana pū ʻia ʻo CMC i ka ʻoihana hoʻoheheʻe ʻaila ma ke ʻano he mea hoʻohui o ka lepo wili, kahi e hana ai ma ke ʻano he viscosity modifier a me ka mea mālama wai. Loaʻa ka poly-anionic cellulose a i ʻole PAC mai ka cellulose a hoʻohana pū ʻia i ka hana ʻaila. ʻO ka CMC he Acid Carboxylic, kahi ʻo PAC ʻo Etera. ʻO CMC a me PAC, ʻoiai ua hana ʻia lākou mai nā mea waiwai like (cellulose, ka nui a me ke ʻano o nā mea i hoʻohana ʻia e alakaʻi i nā huahana hope loa. ʻokoʻa kino mai ka Polyanionic Cellulose.

Hoʻohana ʻia ka microgranular carboxymethyl cellulose ma ke ʻano he resin cation-exchange i ka ion-exchange chromatography no ka hoʻomaʻemaʻe ʻana i nā Proteins. nā protein i hoʻopaʻa ʻia.

Hoʻohana pū ʻia ʻo CMC i loko o nā ʻeke hau e hana i kahi hui eutectic e hopena i kahi pae hau haʻahaʻa a no laila ʻoi aku ka nui o ka hiki ke hoʻomaha ma mua o ka hau.

Ua hoʻohana pū ʻia nā ʻoluʻolu wai CMC e hoʻopuehu i nā nanotubes kalapona. Manaʻo ʻia ʻo nā molekala CMC lōʻihi e hoʻopuni a puni nā nanotubes, e ʻae iā lākou e hoʻopuehu i ka wai.

Ua hoʻohana nui ʻia ka EnzymologyCMC e ʻike i ka hana enzyme mai nā endoglucanases (kahi o ka cellulase complex). ʻO CMC kahi substrate kikoʻī loa no nā cellulases endo-acting no ka mea ua hoʻolālā ʻia kona ʻano e hoʻokaʻawale i ka cellulose a hana i nā pūnaewele amorphous i kūpono no ka hana endglucanase. Makemake ʻia ʻo CMC no ka mea hiki ke ana ʻia ka huahana catalysis (glucose) me ka hoʻohana ʻana i ka hoʻāʻo ʻana i ke kō e like me 3,5-Dinitrosalicylic acid. ʻO ka hoʻohana ʻana i ka CMC i nā hoʻokolohua enzyme he mea nui loa ia e pili ana i ka nānā ʻana i nā enzyme cellulase e pono ai no ka hoʻololi ʻana i ka ethanol cellulosic ʻoi aku ka maikaʻi. Eia naʻe, ua hoʻohana hewa ʻia ʻo CMC i ka hana mua me nā enzyme cellulase e like me ka nui o nā mea i pili i ka hana cellulase holoʻokoʻa me CMC hydrolysis. E like me ka hoʻomaopopo ʻana i ke ʻano o ka depolymerization cellulose, pono e hoʻomaopopo ʻia ʻo nā exo-cellulases ka mea nui i ka degradation o crystalline (eg Avicel) a ʻaʻole hiki ke hoʻoheheʻe (eg CMC) cellulose.