Ka hopena o DS ma ka carboxymethyl cellulose Quality

ʻO ka Degree of Substitution (DS) kahi ʻāpana koʻikoʻi e hoʻoikaika nui i ka maikaʻi a me ka hana o Carboxymethyl Cellulose (CMC). Hōʻike ʻo DS i ka helu awelika o nā hui carboxymethyl i hoʻololi ʻia i kēlā me kēia ʻāpana anhydroglucose o ka iwi kuamoʻo cellulose. Hoʻopili ka waiwai DS i nā waiwai like ʻole o CMC, me kona solubility, viscosity, hiki ke paʻa wai, a me ka ʻano rheological. Penei ka hopena o DS i ka maikaʻi o CMC:

1. Solubility:

• DS haʻahaʻa: CMC me kahi DS haʻahaʻa e liʻiliʻi i ka wai ma muli o ka liʻiliʻi o nā hui carboxymethyl i loaʻa no ka ionization. Hiki paha kēia i ka lohi o ka hoʻoheheʻe ʻana a me ka lōʻihi o ka manawa hydration.
• DS kiʻekiʻe: CMC me kahi DS kiʻekiʻe e hiki ke hoʻoheheʻe ʻia i ka wai, no ka mea, ʻo ka nui o nā hui carboxymethyl e hoʻonui ai i ka ionization a me ka dispersibility o nā kaulahao polymer. Ke alakaʻi nei kēia i ka hoʻoheheʻe wikiwiki a hoʻomaikaʻi i nā waiwai hydration.

2. Viscosity:

• DS haʻahaʻa: ʻo CMC me kahi DS haʻahaʻa e hōʻike pinepine ana i ka viscosity haʻahaʻa ma kahi ʻike i hāʻawi ʻia i hoʻohālikelike ʻia me nā māka DS kiʻekiʻe. ʻO ka liʻiliʻi o nā pūʻulu carboxymethyl ka hopena i ka liʻiliʻi o nā pilina ionic a me nā hui kaula polymer nāwaliwali, e alakaʻi ana i ka viscosity haʻahaʻa.
• DS kiʻekiʻe: ʻoi aku ka nui o nā māka DS CMC kiʻekiʻe ma muli o ka piʻi ʻana o ka ionization a me nā pilina kaula polimer ikaika. Hoʻonui ka nui o nā pūʻulu carboxymethyl i ka hoʻopaʻa ʻana a me ka hoʻopaʻa ʻana i ka hydrogen, e hopena i nā hopena viscosity kiʻekiʻe.

3. Paʻa wai:

• DS haʻahaʻa: ʻo CMC me kahi DS haʻahaʻa ua hōʻemi paha i ka mana paʻa wai i hoʻohālikelike ʻia me nā māka DS kiʻekiʻe. ʻO nā pūʻulu carboxymethyl liʻiliʻi e kaupalena i ka helu o nā wahi i loaʻa no ka hoʻopaʻa ʻana i ka wai a me ka absorption, e hopena i ka paʻa ʻana o ka wai.
• DS kiʻekiʻe: ʻO nā māka kiʻekiʻe DS CMC maʻamau e hōʻike i nā waiwai paʻa wai ma muli o ka nui o nā hui carboxymethyl i loaʻa no ka hydration. Hoʻonui kēia i ka hiki o ka polymer ke komo a mālama i ka wai, e hoʻomaikaʻi i kāna hana ma ke ʻano he mānoanoa, mea hoʻopili, a i ʻole mea hoʻoponopono wai.

4. ʻO ka Rheological Behavior:

• DS haʻahaʻa: CMC me kahi DS haʻahaʻa e ʻoi aku ka nui o ke kahe ʻana o Newtonian, me ka viscosity kūʻokoʻa i ka helu shear. He mea kūpono kēia no nā noi e koi ana i ka viscosity paʻa ma luna o kahi ākea o ka nui o ka shear rate, e like me ka hana ʻai.
• DS kiʻekiʻe: ʻoi aku ka nui o nā māka DS CMC kiʻekiʻe e hōʻike i nā ʻano pseudoplastic a i ʻole ʻāwili ʻāhi, kahi e emi ai ka viscosity me ka piʻi ʻana o ka shear rate. Maikaʻi kēia waiwai no nā noi e koi ana i ka maʻalahi o ka pahū ʻana, ka ʻōpala, a i ʻole ka hoʻolaha ʻana, e like me ka pena a i ʻole nā ​​huahana mālama pilikino.

5. Paʻa a me ka hoʻokō:

• DS haʻahaʻa: CMC me kahi DS haʻahaʻa hiki ke hōʻike i ka paʻa a me ka hoʻohālikelike ʻana me nā mea ʻē aʻe i loko o ka hoʻohua ʻana ma muli o kona haʻahaʻa haʻahaʻa a me nā pilina nāwaliwali. Hiki i kēia ke pale i ka hoʻokaʻawale ʻana, ka ua, a i ʻole nā ​​​​pilikia paʻa ʻē aʻe i nā ʻōnaehana paʻakikī.
• DS kiʻekiʻe: ʻoi aku ka maʻalahi o nā māka DS CMC kiʻekiʻe i ka gelation a i ʻole ka hoʻokaʻawale ʻana i nā ʻāpana i loko o nā haʻina paʻa a i ʻole i nā wela kiʻekiʻe ma muli o nā pilina polymer ikaika. Pono ka hoʻomākaukau ʻana a me ka hana ʻana no ka hōʻoia ʻana i ka paʻa a me ka hoʻohālikelike ʻana i ia mau hihia.

ʻO ka Degree of Substitution (DS) ka hopena nui i ka maikaʻi, ka hana, a me ke kūpono o Carboxymethyl Cellulose (CMC) no nā noi like ʻole. ʻO ka hoʻomaopopo ʻana i ka pilina ma waena o DS a me nā waiwai CMC he mea nui ia no ke koho ʻana i ka papa kūpono e hoʻokō i nā koi kikoʻī a me nā pae hoʻokō.