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

ʻO ka Polyanionic cellulose (PAC) a me ka sodium carboxymethyl cellulose (CMC) nā mea i hoʻohana nui ʻia i nā ʻoihana like ʻole no ko lākou mau waiwai mānoanoa, hoʻopaʻa, a me nā waiwai rheological. ʻOiai ke kaʻana like nei lākou i kekahi mau ʻano like, he ʻokoʻa ko lākou ma ke ʻano o ka hoʻonohonoho kemika, nā waiwai, a me nā noi. Eia kahi hoʻohālikelike ma waena o PAC a me CMC:

1. ʻAno Kemika:
   • PAC: ʻO ka cellulose Polyanionic kahi polymer wai-hoʻoheheʻe ʻia i loaʻa mai ka cellulose ma o ka hoʻokomo ʻana o ka carboxymethyl a me nā hui anionic ʻē aʻe ma luna o ke kuamoʻo cellulose. Loaʻa iā ia nā hui carboxyl he nui (-COO-) ma ke kaulahao cellulose, e lilo ia i anionic kiʻekiʻe.
   • CMC: ʻO ka sodium carboxymethyl cellulose he polymer wai-soluble i loaʻa mai ka cellulose, akā ke hele nei ia i kahi kaʻina hana carboxymethylation kikoʻī, e hopena ana i ka hoʻololi ʻana o nā hui hydroxyl (-OH) me nā hui carboxymethyl (-CH2COONa). ʻO ka maʻamau, ʻoi aku ka liʻiliʻi o nā hui carboxyl i ka CMC i hoʻohālikelike ʻia me ka PAC.
2. ʻAno Ionic:
   • PAC: He anionic kiʻekiʻe ka cellulose Polyanionic ma muli o ke alo o nā hui carboxyl he nui ma ke kaulahao cellulose. Hōʻike ia i nā waiwai hoʻololi ion ikaika a hoʻohana pinepine ʻia ma ke ʻano he mea hoʻomalu kānana a me ka mea hoʻololi rheology i nā wai wili wai.
   • CMC: He anionic nō hoʻi ka sodium carboxymethyl cellulose, akā ʻo kona kekelē o ka anionicity e pili ana i ke kekelē o ka pani ʻana (DS) o nā hui carboxymethyl. Hoʻohana pinepine ʻia ʻo CMC ma ke ʻano he mea hoʻomānoanoa, mea hoʻopaʻa, a me ka mea hoʻololi viscosity i nā noi like ʻole, me ka meaʻai, nā lāʻau lapaʻau, a me nā huahana mālama pilikino.
3. ʻO ka Viscosity a me ka Rheology:
   • PAC: Hōʻike ka cellulose Polyanionic i ka viscosity kiʻekiʻe a me ke ʻano shear-thinning i loko o ka hopena, e lilo ia i mea kūpono ma ke ʻano he thickener a me ka rheology modifier i nā wai ʻeli a me nā noi ʻoihana ʻē aʻe. Hiki i ka PAC ke kū i nā mahana kiʻekiʻe a me nā pae salinity i loaʻa i nā hana o ka ʻaila.
   • CMC: Hōʻike pū ka sodium carboxymethyl cellulose i nā waiwai viscosity a me ka hoʻololi ʻana i ka rheology, akā ʻoi aku ka haʻahaʻa o kona viscosity i hoʻohālikelike ʻia me PAC. Hoʻokumu ʻo CMC i nā hopena paʻa a me nā pseudoplastic, e kūpono ana no nā ʻano hana like ʻole, me ka meaʻai, nā mea hoʻonani, a me nā lāʻau lapaʻau.
4. Nā noi:
   • PAC: Hoʻohana nui ʻia ka cellulose Polyanionic i ka ʻoihana aila a me ke kinoea ma ke ʻano he mea hoʻomalu kānana, hoʻololi rheology, a me ka mea hōʻemi i ka nalowale o ka wai i nā wai ʻeli. Hoʻohana ʻia nō hoʻi ia i nā noi ʻoihana ʻē aʻe e like me nā mea kūkulu hale a me ka hoʻoponopono ʻana i ke kaiapuni.
   • CMC: He ʻano like ʻole nā ​​noi o ka sodium carboxymethyl cellulose ma nā ʻoihana like ʻole, me ka meaʻai a me nā mea inu (ma ke ʻano he mea hoʻomānoanoa a me ka mea hoʻopaʻa), nā lāʻau lapaʻau (ma ke ʻano he mea hoʻopaʻa a me ka mea hoʻoheheʻe), nā huahana mālama pilikino (ma ke ʻano he mea hoʻololi rheology), nā lole (ma ke ʻano he mea nui), a me ka hana pepa (ma ke ʻano he mea hoʻohui pepa).

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