1. Hoʻolālā molekala
He mana koʻikoʻi ko ka molecular structure o ka sodium carboxymethyl cellulose (CMC) i kona solubility i ka wai. CMC mea he derivative o ka cellulose, a me kona structural hiʻona o ka hydroxyl pūʻulu ma ka cellulose kaulahao i hapa a pau loa i ka carboxymethyl hui. ʻO ke kiʻekiʻe o ka hoʻololi ʻana (DS) kahi ʻāpana kī, e hōʻike ana i ka helu awelika o nā pūʻulu hydroxyl i pani ʻia e nā hui carboxymethyl ma kēlā me kēia ʻāpana glucose. ʻO ke kiʻekiʻe o ka hoʻololi ʻana, ʻoi aku ka ikaika o ka hydrophilicity o CMC, a ʻoi aku ka nui o ka solubility. Eia nō naʻe, hiki i ke kiʻekiʻe o ka hoʻololi ʻana ke alakaʻi i ka hoʻomaikaʻi ʻana i ka pilina ma waena o nā molekala, a laila e hōʻemi i ka solubility. No laila, pili ka degere o ka hoʻololi ʻana i ka solubility i loko o kekahi pae.
2. Kaumaha molekula
Hoʻopili ke kaumaha molekala o CMC i kona solubility. ʻO ka maʻamau, ʻoi aku ka liʻiliʻi o ke kaumaha molekala, ʻoi aku ka nui o ka solubility. High molecular kaumaha CMC loaʻa i ka lōʻihi a me ka paʻakikī kaulahao molekala, e alakai i ka hoʻonui entanglement a me ka launa pū ana i loko o ka hoʻonā, ka palena o kona solubility. ʻOi aku ka maikaʻi o ka hoʻopili ʻana o CMC me nā molekole wai, a laila e hoʻomaikaʻi ai i ka solubility.
3. Ka wela
He mea koʻikoʻi ka mahana e pili ana i ka solubility o CMC. ʻO ka maʻamau, ʻo ka piʻi ʻana o ka mahana e hoʻonui i ka solubility o CMC. ʻO kēia ke kumu o ka hoʻonui ʻana o nā mahana kiʻekiʻe i ka ikehu kinetic o nā molekole wai, a laila e luku ai i nā paʻa hydrogen a me nā ikaika van der Waals ma waena o nā molekala CMC, e maʻalahi ka hoʻoheheʻe ʻana i ka wai. Eia nō naʻe, hiki i ka wela kiʻekiʻe ke hoʻoheheʻe a denature paha ʻo CMC, ʻaʻole kūpono i ka hemo ʻana.
4. pH waiwai
He hilinaʻi koʻikoʻi ko CMC solubility i ka pH o ka hopena. I loko o kahi kaiapuni kū ʻole a alkaline paha, e hoʻokaʻawale nā hui carboxyl i loko o nā molekala CMC i nā ion COO⁻, e hoʻopiʻi maikaʻi ʻia nā molekala CMC, ma laila e hoʻonui ai i ka pilina me nā mole wai a hoʻomaikaʻi i ka solubility. Eia nō naʻe, ma lalo o nā kūlana acidic ikaika, ua kāohi ʻia ka ionization o nā pūʻulu carboxyl a hiki ke emi ka solubility. Eia kekahi, hiki i nā kūlana pH koʻikoʻi ke hoʻohaʻahaʻa i ka CMC, a laila e pili ana i kona solubility.
5. Ionic ikaika
Hoʻopili ka ikaika ionic i ka wai i ka solubility o CMC. Hiki ke alakaʻi i nā hopena me ka ikaika ionic kiʻekiʻe i ka hoʻonui ʻia ʻana o ka uila ma waena o nā molekala CMC, e hōʻemi ana i kona solubility. ʻO ka hopena paʻakai he mea maʻamau, kahi e hoʻemi ai ka nui o nā ion i ka solubility o CMC i ka wai. ʻO ka ikaika ionic haʻahaʻa e kōkua pinepine iā CMC e hoʻoheheʻe.
6. Paʻa wai
ʻO ka paʻakikī o ka wai, i hoʻoholo nui ʻia e ka neʻe ʻana o ka calcium a me ka magnesium ions, pili pū kekahi i ka solubility o CMC. Hiki i nā cations nui i loko o ka wai paʻakikī (e like me Ca²⁺ a me Mg²⁺) ke hana i nā alahaka ionic me nā pūʻulu carboxyl i loko o nā molekala CMC, ka hopena i ka hōʻuluʻulu mole a me ka hoʻohaʻahaʻa i ka solubility. Ma ka hoʻohālikelike ʻana, hiki i ka wai palupalu ke hoʻopau piha i ka CMC.
7. Hoohuoi
Kōkua ka hoʻoulu ʻana i ka CMC e hoʻoheheʻe i ka wai. Hoʻonui ka Agitation i ka ʻili o ka pilina ma waena o ka wai a me CMC, e hoʻolaha ana i ke kaʻina hana. Hiki i ka hoʻouluulu kūpono ke pale i ka CMC mai ka hoʻohui ʻana a kōkua iā ia e hoʻopuehu like i ka wai, a laila e hoʻonui ai i ka solubility.
8. Nā kūlana mālama a mālama
ʻO ka mālama ʻana a me ka mālama ʻana i nā kūlana o CMC e pili pū i kāna mau waiwai solubility. Hiki i nā mea e like me ka haʻahaʻa, ka mahana, a me ka manawa mālama ke hoʻopili i ke kūlana kino a me nā waiwai kemika o CMC, a laila e hoʻopilikia i kona solubility. I mea e mālama ai i ka solubility maikaʻi o CMC, pono e pale ʻia mai ka lōʻihi o ka hoʻolaha ʻana i ka wela kiʻekiʻe a me ka haʻahaʻa kiʻekiʻe, a pono e hoʻopaʻa paʻa ʻia ka pahu.
9. Ka hopena o nā mea hoʻohui
ʻO ka hoʻohui ʻana i nā mea ʻē aʻe, e like me nā mea kōkua dissolution a i ʻole solubilizers, i ka wā o ka dissolution kaʻina o CMC hiki ke hoʻololi i kāna mau waiwai solubility. No ka laʻana, hiki i kekahi mau surfactants a i ʻole nā mea hoʻoheheʻe wai-soluble organic ke hoʻonui i ka solubility o CMC ma o ka hoʻololi ʻana i ka ʻili o ka ʻili o ka hopena a i ʻole ka polarity o ka waena. Eia kekahi, hiki i kekahi mau ion a i ʻole nā mea kemika ke launa pū me nā molekala CMC e hana i nā paʻakikī hiki ke hoʻoheheʻe ʻia, a laila e hoʻomaikaʻi ai i ka solubility.
ʻO nā mea e pili ana i ka solubility kiʻekiʻe o ka sodium carboxymethyl cellulose (CMC) i loko o ka wai e pili ana i kona molecular structure, molecular weight, temperature, pH value, ionic strength, water hardness, stirring conditions, storage and handling condition, and the influence of additives. Pono e noʻonoʻo piha ʻia kēia mau mea i nā noi kūpono e hoʻopaʻa i ka solubility o CMC a hoʻokō i nā koi noi kikoʻī. He mea nui ka hoʻomaopopo ʻana i kēia mau mea no ka hoʻohana ʻana a me ka mālama ʻana i ka CMC a kōkua i ka hoʻomaikaʻi ʻana i kāna mau hopena noi ma nā ʻano āpau.
Ka manawa hoʻouna: Jul-10-2024