Polyanionic Cellulose (PAC) a me Sodium Carboxymethyl Cellulose (CMC)

ʻO ka polyanionic cellulose (PAC) a me ka sodium carboxymethyl cellulose (CMC) nā mea ʻelua cellulose i hoʻohana nui ʻia i nā ʻoihana like ʻole no ko lākou mānoanoa, hoʻopaʻa, a me nā waiwai rheological. ʻOiai kaʻana like lākou, loaʻa iā lākou nā ʻokoʻa like ʻole e pili ana i ke ʻano kemika, nā waiwai, a me nā noi. Eia ka hoʻohālikelike ma waena o PAC a me CMC:

1. Hoʻolālā Kimia:
   • PAC: ʻO ka polyanionic cellulose he polymer hiki ke hoʻoheheʻe ʻia i ka wai i loaʻa mai ka cellulose ma o ka hoʻokomo ʻana i ka carboxymethyl a me nā hui anionic ʻē aʻe ma luna o ka iwi kuamoʻo cellulose. Loaʻa iā ia nā hui carboxyl he nui (-COO-) ma ke kaulahao cellulose, e lilo ia i anionic nui loa.
   • CMC: ʻO ka sodium carboxymethyl cellulose kekahi polymer hiki ke hoʻoheheʻe ʻia i ka wai i loaʻa mai ka cellulose, akā ke hana nei ia i kahi kaʻina carboxymethylation kikoʻī, e hopena i ka hoʻololi ʻana o nā pūʻulu hydroxyl (-OH) me nā hui carboxymethyl (-CH2COONa). Loaʻa i ka CMC ka liʻiliʻi o nā hui carboxyl i hoʻohālikelike ʻia me PAC.
2. ʻAno Ionic:
   • PAC: ʻO ka polyanionic cellulose ka anionic ma muli o ka loaʻa ʻana o nā hui carboxyl lehulehu ma ke kaulahao cellulose. Hōʻike ia i nā waiwai hoʻololi ion-exchange a hoʻohana pinepine ʻia ma ke ʻano he mea hoʻomalu kānana a me ka hoʻololi rheology i nā wai hoʻoheheʻe wai.
   • CMC: ʻO ka sodium carboxymethyl cellulose kekahi anionic, akā ʻo kona degere o ka anionicity e pili ana i ke degere o ka hoʻololi ʻana (DS) o nā hui carboxymethyl. Hoʻohana pinepine ʻia ʻo CMC ma ke ʻano he mānoanoa, stabilizer, a me viscosity modifier i nā noi like ʻole, me ka meaʻai, nā lāʻau lapaʻau, a me nā huahana mālama pilikino.
3. Viscosity a me Rheology:
   • PAC: Hōʻike ka polyanionic cellulose i ka viscosity kiʻekiʻe a me ka shear-thinning behavior i ka hoʻonā, e hana maikaʻi ai ma ke ʻano he mea hoʻololi mānoanoa a rheology i nā wai wili a me nā noi ʻoihana ʻē aʻe. Hiki i ka PAC ke pale i nā wela kiʻekiʻe a me nā pae paʻakai i loaʻa i nā hana ʻaila.
   • CMC: Hōʻike pū ka sodium carboxymethyl cellulose i ka viscosity a me nā waiwai hoʻololi rheology, akā ʻoi aku ka haʻahaʻa o kona viscosity i ka PAC. Hoʻokumu ʻo CMC i nā ʻōnaehana kūpaʻa a me ka pseudoplastic, kūpono ia no nā ʻano noi like ʻole, me ka meaʻai, nā mea hoʻonaninani, a me nā lāʻau lapaʻau.
4. Nā noi:
   • PAC: Hoʻohana mua ʻia ka polyanionic cellulose i ka ʻoihana ʻaila a me ka ʻea ma ke ʻano he mea hoʻomalu kānana, hoʻololi rheology, a me ka hoʻemi hoʻoemi wai i nā wai wili. Hoʻohana ʻia ia i nā noi ʻoihana ʻē aʻe e like me nā mea kūkulu hale a me ka hoʻoponopono ʻana i ke kaiapuni.
   • CMC: Loaʻa i ka sodium carboxymethyl cellulose nā noi like ʻole i nā ʻoihana like ʻole, me ka meaʻai a me nā mea inu (ma ke ʻano he mānoanoa a me ka stabilizer), nā lāʻau lapaʻau (ma ke ʻano he mea hoʻopaʻa a me ka disintegrant), nā huahana mālama pilikino (ma ke ʻano he rheology modifier), textiles (ma ke ʻano he sizing agent) , a me ka hana pepa (ma ke ʻano he mea hoʻohui pepa).

ʻoiai nā polyanionic cellulose (PAC) a me ka sodium carboxymethyl cellulose (CMC) he cellulose derivatives me nā waiwai anionic a me nā noi like i kekahi mau ʻoihana, loaʻa iā lākou nā ʻokoʻa like ʻole ma ke ʻano o ka hoʻolālā kemika, nā waiwai, a me nā noi kikoʻī. Hoʻohana nui ʻia ʻo PAC i ka ʻoihana aila a me ke kinoea, ʻoiai ʻo CMC e ʻike i nā noi ākea i ka meaʻai, lāʻau lapaʻau, mālama pilikino, textiles, a me nā ʻoihana ʻē aʻe.