He polymer ka polyanionic cellulose?

ʻO ka polyanionic cellulose (PAC) he polymer maoli, he mea koʻikoʻi i nā ʻoihana like ʻole, ʻoi loa i ka ʻeli ʻana a me ka ʻimi ʻaila. No ka hoʻomaopopo ʻana i ke koʻikoʻi a me nā waiwai o ka polyanionic cellulose, e hoʻomaka kākou i ka ʻimi ʻana i kāna haku mele, hoʻohana, a me nā hopena ma nā ʻāpana like ʻole.

Ma kona kumu, polyanionic cellulose he derivative o cellulose, he polymer kūlohelohe i loaʻa i loko o nā paia o nā mea kanu. ʻO ka cellulose ponoʻī he polysaccharide i haku ʻia me nā ʻāpana glucose i hoʻopili pū ʻia e nā paʻa glycosidic β(1→4). Hāʻawi kēia hoʻonohonoho i ka cellulose i kona ʻano ikaika a me ka rigidity, e lilo ia i mea koʻikoʻi i loko o nā mea kanu. Eia nō naʻe, hiki ke hoʻololi a hoʻonui ʻia nā waiwai o ka cellulose e kūpono i nā noi ʻoihana like ʻole, e alakaʻi ana i ka hoʻomohala ʻana o nā derivatives e like me polyanionic cellulose.

Hoʻohui ʻia ka polyanionic cellulose ma o ka hoʻololi kemika o ka cellulose, kahi i hoʻololi ʻia ai nā hui hydroxyl (-OH) i loko o ka mole cellulose me nā hui carboxymethyl (-CH2COOH). Hāʻawi kēia hoʻololi i ke ʻano anionic i ka iwi kuamoʻo cellulose, ka hopena i kahi polymer me nā waiwai polyanionic. Hoʻoholo ka degere o ka hoʻololi ʻana (DS) i ka nui o ka hoʻololi ʻana i ka carboxymethyl ma ka iwi kuamoʻo cellulose, e hoʻohuli ana i nā waiwai āpau a me nā noi o ka polymer.

ʻO kekahi o nā noi koʻikoʻi o ka polyanionic cellulose i loko o ka ʻoihana aila a me ke kinoea, ʻoi aku hoʻi i nā wai wili. ʻO nā wai wili, i ʻike mau ʻia ʻo ka ʻōpala, e lawelawe i nā kumu like ʻole i ka wā o ka wili ʻana, me ka lubrication, ka hoʻoluʻu, a me ka wehe ʻana i nā ʻōpala. Hoʻohui ʻia ka polyanionic cellulose i ka ʻeli ʻana i nā wai ma ke ʻano he viscosifier a me ka mea hoʻokele waiwai.

Ma ke ʻano he viscosifier, hāʻawi ka polyanionic cellulose i nā waiwai rheological i ka hoʻoheheʻe ʻana i nā wai, e hoʻonui ana i ko lākou hiki ke hoʻokuʻu i nā ʻoki drill a mālama i ka paʻa o ka wellbore. ʻO ke kaumaha molekala kiʻekiʻe o ka polymer a me ke ʻano anionic e ʻae iā ia e hana i kahi hoʻonohonoho pūnaewele i loko o ka wai, e hoʻonui i ka viscosity a pale i ka sagging a i ʻole ka hoʻopaʻa ʻana o nā mea paʻa. Eia kekahi, hōʻike ka polyanionic cellulose i ka hoʻomanawanui paʻakai maikaʻi loa, e kūpono ana ia no ka hoʻohana ʻana i nā wahi wili kiʻekiʻe-salinity maʻamau i nā hana wili o waho.

Ma waho aʻe o kāna hana ma ke ʻano he viscosifier, hana ka polyanionic cellulose ma ke ʻano he mea hoʻomalu i ka hoʻoheheʻe ʻana i ka wai. Ma ka hana ʻana i kahi keke kānana lahilahi a impermeable ma ka paia luawai, kōkua ka polymer i ka hoʻēmi ʻana i ka nalowale o ka wai i loko o ka hoʻokumu ʻana, a laila e mālama pono i ka mana kaomi a pale i ka pōʻino. He mea koʻikoʻi kēia waiwai no ka hoʻomaikaʻi ʻana i ka pono o ka drilling a me ka hōʻemi ʻana i nā pilikia o ka hana.

Ma waho aʻe o ka ʻāpana aila a me ke kinoea, loaʻa ka polyanionic cellulose i nā noi i nā ʻoihana ʻē aʻe, me nā lāʻau lapaʻau, nā meaʻai, a me nā mea hoʻonaninani. I loko o nā ʻano lāʻau lapaʻau, lawelawe ia ma ke ʻano he binder, disintegrant, a i ʻole viscosity modifier i ka hana papa papa a me ka hoʻokuʻu waha. I ka ʻoihana meaʻai, hoʻohana ʻia ka polyanionic cellulose ma ke ʻano he mea mānoanoa, stabilizer, a i ʻole emulsifier i nā huahana mai nā kīʻaha a me nā lole i nā huahana dairy a me nā mea inu. ʻO kona biocompatibility a me ke ʻano ʻawaʻawa ʻole e kūpono ia no ka hoʻohana ʻana i nā huahana mālama pilikino e like me nā lotions, creams, a me nā shampoos, kahi e hana ai ma ke ʻano he mānoanoa a i ʻole suspending agent.

Ke kū nei ka polyanionic cellulose ma ke ʻano he polymer versatile me nā noi ākea ma nā ʻoihana he nui. ʻO kāna mau waiwai kūʻokoʻa, i loaʻa mai ka hoʻololi ʻana o ka cellulose, he mea nui ia i nā ʻāpana e like me ka aila a me ke kinoea, nā lāʻau lapaʻau, nā meaʻai, a me nā mea hoʻonaninani. Ke hoʻomau nei ka noiʻi a me ka holomua ʻenehana, manaʻo ʻia ka hoʻohana ʻana o ka polyanionic cellulose e hoʻonui hou aku, e hāʻawi ana i ka hana hou a me ka pono i nā ʻano like ʻole.