Loaʻa ka Carboxymethyl cellulose (CMC) ma hope o ka carboxymethylation o cellulose. ʻO kāna mea hoʻonā wai i nā hana o ka mānoanoa, hana kiʻiʻoniʻoni, hoʻopaʻa ʻana, paʻa wai, pale colloid, emulsification a me ka hoʻokuʻu ʻana, a hoʻohana nui ʻia i ka ʻaila, meaʻai, lāʻau lapaʻau, etc. , textile a me nā ʻoihana pepa, ʻo ia kekahi o nā mea nui loa cellulose ethers.ʻO ka cellulose kūlohelohe ka polysaccharide i hoʻolaha nuiʻia a nui loa i keʻano, a he waiwai loa kona mau kumu. ʻO ka ʻenehana hoʻololi o kēia manawa o cellulose e kālele nui ana i ka etherification a me ka esterification. ʻO Carboxymethylation kahi ʻano ʻenehana etherification.
waiwai kino
ʻO ka sodium carboxymethyl cellulose (CMC) he anionic cellulose ether, me ke keʻokeʻo a i ʻole melemele liʻiliʻi flocculent fiber pauka a i ʻole ka pauda keʻokeʻo keʻokeʻo, ʻala ʻole, ʻono ʻole, ʻona ʻole; hiki ke hoʻoheheʻe ʻia i loko o ka wai anuanu a i ʻole ka wai wela, e hoʻokumu ana i kahi ʻano viscosity akaka. He kūʻokoʻa a alkaline iki paha ka hopena, hiki ʻole ke hoʻoheheʻe ʻia i ka ethanol, ether, isopropanol, acetone a me nā mea hoʻoheheʻe kūlohelohe ʻē aʻe, hiki ke hoʻoheheʻe ʻia i loko o 60% wai ethanol a i ʻole acetone solution. He hygroscopic, paʻa i ka māmā a me ka wela, emi ka viscosity me ka piʻi ʻana o ka mahana, paʻa ka hopena i ka pH 2-10, haʻahaʻa ka pH ma mua o 2, aia ka ua paʻa, a emi ka viscosity i ka wā i kiʻekiʻe ai ka pH ma mua o 10 He 227 ℃ ka wela o ka hoʻoheheʻe ʻana, 252 ℃ ka mahana o ka carbonization, a ʻo ka ʻili o ka ʻili o 2% wai wai. 71mn/n.
waiwai kemika
Hoʻomākaukau ʻia ia mai ka cellulose derivatives o ka carboxymethyl substituents, e mālama ana i ka cellulose me ka sodium hydroxide e hana ai i ka cellulose alkali, a laila e hana me ka monochloroacetic acid. He 3 mau pūʻulu hydroxyl ka ʻāpana glucose i hoʻokumu i ka cellulose i hiki ke hoʻololi ʻia, no laila hiki ke loaʻa nā huahana me nā pae like ʻole. Ma ka awelika, ua hoʻokomo ʻia ka 1 mmol o ka carboxymethyl no ka 1 g o ke kaumaha maloʻo, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai a me ka dilute acid, akā hiki ke pehu a hoʻohana ʻia no ka chromatography hoʻololi ion. ʻO Carboxymethyl pKa ma kahi o 4 i loko o ka wai maʻemaʻe a ma kahi o 3.5 i ka 0.5mol/L NaCl. He mea hoʻololi cation acid nāwaliwali a hoʻohana mau ʻia no ka hoʻokaʻawale ʻana i nā protein kūʻokoʻa a me nā kumu kumu ma ka pH>4. ʻOi aku ma mua o 40% o nā pūʻulu hydroxyl e pani ʻia e nā hui carboxymethyl, hiki ke hoʻoheheʻe ʻia i ka wai e hana i kahi hopena colloidal viscosity paʻa.
ʻO ke kumu nui
ʻO Carboxymethyl cellulose (CMC) he pauka flocculent keʻokeʻo non-toxic a ʻaʻala ʻole me ka hana paʻa a hiki ke maʻalahi i ka wai. ʻO kāna wai hoʻonā wai he wai kūʻokoʻa a alkaline a ʻaʻole i hoʻoheheʻe ʻia, hiki ke hoʻoheheʻe ʻia i nā glues a me nā resins ʻē aʻe, a hiki ʻole ke hoʻoheheʻe ʻia. i nā mea hoʻoheheʻe organik e like me ka ethanol. Hiki ke hoʻohana ʻia ka CMC ma ke ʻano he adhesive, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc.
ʻO ka sodium carboxymethyl cellulose (CMC) ka huahana me ka huahana nui loa, ka mea i hoʻohana nui ʻia a me ka maʻalahi o ka hoʻohana ʻana i waena o nā cellulose ethers, i kapa ʻia ʻo "industrial monosodium glutamate".
1. Hoʻohana ʻia ia no ka ʻeli ʻana i ka aila a me ke kinoea maoli, ka ʻeli maikaʻi a me nā papahana ʻē aʻe
① Hiki i ka lepo i loko o ka CMC ke hana i ka pā punawai i keke kānana lahilahi a paʻa me ka haʻahaʻa haʻahaʻa, e hōʻemi ana i ka nalowale o ka wai.
② Ma hope o ka hoʻohui ʻana i ka CMC i ka ʻōpala, hiki i ka rig rig ke loaʻa ka ikaika ʻoki haʻahaʻa haʻahaʻa, i hiki ai i ka ʻōpala ke hoʻokuʻu maʻalahi i ke kinoea i hoʻopaʻa ʻia i loko, a i ka manawa like, hoʻolei koke ʻia ka ʻōpala i loko o ka lua lepo.
③ ʻO ka lepo lepo, e like me nā hoʻopuehu hoʻomaha ʻē aʻe, aia kekahi manawa o ke ola, a hiki i ka hoʻohui ʻana o CMC ke hoʻopaʻa a hoʻolōʻihi i ka manawa o ke ola.
④ ʻAʻole hiki ke hoʻopili ʻia ka lepo i loko o ka CMC e ka pala, no laila ʻaʻole pono e mālama i kahi waiwai pH kiʻekiʻe a hoʻohana i nā preservatives.
⑤ Loaʻa iā CMC ma ke ʻano he lāʻau lapaʻau ʻauʻau lepo holoi holoi, hiki ke pale i ka haumia o nā paʻakai soluble.
⑥ He kūpaʻa maikaʻi ka lepo i loaʻa i ka CMC a hiki ke hōʻemi i ka nalowale o ka wai inā ʻoi aku ka mahana ma luna o 150 ℃.
ʻO CMC me ka viscosity kiʻekiʻe a me ke kiʻekiʻe o ka hoʻololi ʻana he kūpono ia no ka lepo me ka haʻahaʻa haʻahaʻa, a ʻo CMC me ka viscosity haʻahaʻa a me ke kiʻekiʻe o ka hoʻololi ʻana he kūpono ia no ka lepo me ke kiʻekiʻe kiʻekiʻe. Pono e hoʻoholo ʻia ke koho ʻana o CMC e like me nā kūlana like ʻole e like me ke ʻano lepo, ka ʻāina a me ka hohonu.
2. Hoʻohana ʻia i loko o ka lole lole, paʻi a me ka ʻoihana pena. Ke hoʻohana nei ka ʻoihana textile i ka CMC ma ke ʻano he ʻano nui no ka nui o ka ʻili uila o ka pulupulu, ka hulu siliki, ka fiber kemika, ka hui ʻana a me nā mea ikaika ʻē aʻe;
3. Hoʻohana ʻia i ka ʻoihana pepa CMC hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻomaʻemaʻe ʻili pepa a me ka ʻoihana sizing i ka ʻoihana pepa. ʻO ka hoʻohui ʻana i ka 0.1% i ka 0.3% CMC i ka pulp hiki ke hoʻonui i ka ikaika tensile o ka pepa ma 40% a 50%, hoʻonui i ka rupture compressive e 50%, a hoʻonui i ka kneadability e 4 a 5 mau manawa.
4. Hiki ke hoʻohana ʻia ka CMC ma ke ʻano he adsorbent lepo ke hoʻohui ʻia i nā detergent synthetic; hoʻohana ʻia nā kemika i kēlā me kēia lā e like me ka ʻoihana toothpaste CMC glycerin aqueous solution ma ke ʻano he kumu kumu no ka toothpaste; Hoʻohana ʻia ka ʻoihana lāʻau lapaʻau e like me ka mānoanoa a me ka emulsifier; Hoʻopili ʻia ka wai wai CMC a hoʻohana ʻia no ka hoʻoheheʻe ʻana i ka mineral lana, etc.
5. I loko o ka ʻoihana ceramic, hiki ke hoʻohana ʻia e like me ka mea hoʻopili, plasticizer, suspending agent no glaze, kala hoʻonohonoho ʻana, etc.
6. Hoʻohana ʻia i ke kūkulu ʻana e hoʻomaikaʻi i ka paʻa ʻana o ka wai a me ka ikaika
7. Hoʻohana ʻia ia i ka ʻoihana meaʻai. Hoʻohana ka ʻoihana meaʻai i ka CMC me ke degere pani kiʻekiʻe ma ke ʻano he mānoanoa no ka ice cream, ka meaʻai canned, nā noodles wikiwiki, a me ka mea hoʻopaʻa pahu no ka pia, a me nā mea ʻē aʻe.
8. Ua koho ka 'oihana lapa'au i ka CMC me ka viscosity kupono e like me ka mea ho'opa'a papa, disintegrant, a me ka mea ho'omaha no ka ho'omaha.
Ka manawa hoʻouna: Nov-03-2022