ʻO Carboxymethylcellulose (CMC) a me ka methylcellulose (MC) nā huaʻelua o ka cellulose, he polymer maoli i loaʻa i loko o nā paia o nā mea kanu. Loaʻa kēia mau derivatives i ka hoʻohana nui ʻana i nā ʻoihana like ʻole ma muli o kā lākou mau waiwai kūʻokoʻa. ʻOiai ke kaʻana like ʻana, loaʻa nā ʻokoʻa like ʻole o CMC a me MC i kā lākou mau hana kemika, nā waiwai, nā noi, a me nā hoʻohana ʻoihana.
1. Kemimi Hana:
Carboxymethylcellulose (CMC):
Hoʻohui ʻia ʻo CMC e ka etherification o cellulose me ka chloroacetic acid, ka hopena i ka hoʻololi ʻana o nā pūʻulu hydroxyl (-OH) ma ka iwi kuamoʻo cellulose me nā hui carboxymethyl (-CH2COOH).
ʻO ke kiʻekiʻe o ka hoʻololi (DS) ma CMC e pili ana i ka helu awelika o nā pūʻulu carboxymethyl no ka ʻāpana glucose i ke kaulahao cellulose. Hoʻoholo kēia ʻāpana i nā waiwai o CMC, me ka solubility, viscosity, a me ka hana rheological.
Methylcellulose (MC):
Hoʻopuka ʻia ka MC e ka hoʻololi ʻana o nā pūʻulu hydroxyl i cellulose me nā hui methyl (-CH3) ma o ka etherification.
E like me CMC, ua hoʻopili ʻia nā waiwai o MC e ke kiʻekiʻe o ka hoʻololi ʻana, kahi e hoʻoholo ai i ka nui o ka methylation ma ke kaulahao cellulose.
2.Solubility:
Carboxymethylcellulose (CMC):
Hiki ke hoʻoheheʻe ʻia ʻo CMC i ka wai a hana ʻia i nā ʻōleʻa ʻālohilohi.
ʻO kona solubility pili i ka pH, me ka solubility kiʻekiʻe ma nā kūlana alkaline.
Methylcellulose (MC):
Hiki ke hoʻoheheʻe ʻia ʻo MC i ka wai, akā pili ka wela.
Ke hoʻoheheʻe ʻia i loko o ka wai anuanu, hana ʻo MC i kahi gel, e hoʻoheheʻe ʻia i ka wā wela. Ua kūpono kēia waiwai no nā noi e koi ana i ka gelation hoʻomalu.
3. Viscosity:
CMC:
Hōʻike i ka viscosity kiʻekiʻe i loko o nā hāʻina wai, e hāʻawi ana i kāna mau waiwai mānoanoa.
Hiki ke hoʻololi ʻia kona viscosity e ka hoʻoponopono ʻana i nā mea e like me ka neʻe ʻana, degere o ka hoʻololi ʻana, a me ka pH.
MC:
Hōʻike i ka ʻano viscosity e like me CMC akā ʻoi aku ka liʻiliʻi o ka viscous.
Hiki ke hoʻomalu ʻia ka viscosity o nā hoʻonā MC e ka hoʻololi ʻana i nā ʻāpana e like me ka mahana a me ka neʻe ʻana.
4.Hoʻokumu Film:
CMC:
Hoʻokumu i nā kiʻiʻoniʻoni maʻalahi a maʻalahi ke hoʻolei ʻia mai kāna mau wai.
Loaʻa kēia mau kiʻiʻoniʻoni i nā noi i nā ʻoihana e like me ka hoʻopili meaʻai a me nā lāʻau lapaʻau.
MC:
Hiki nō hoʻi ke hana i nā kiʻiʻoniʻoni akā ʻoi aku ka palupalu i hoʻohālikelike ʻia i nā kiʻiʻoniʻoni CMC.
5. ʻOihana Meaʻai:
CMC:
Hoʻohana nui ʻia e like me ka stabilizer, thickener, a me ka emulsifier i nā huahana meaʻai e like me ka ice cream, sauces, a me nā lole.
ʻO kona hiki ke hoʻololi i ke ʻano a me ka waha o nā meaʻai meaʻai he mea waiwai ia i nā ʻano meaʻai.
MC:
Hoʻohana ʻia no nā kumu like e like me CMC i nā huahana meaʻai, ʻoi aku i nā noi e koi ana i ka hoʻokumu ʻana o ka gel a me ka hoʻokūpaʻa.
6. Nā lāʻau lapaʻau:
CMC:
Hoʻohana ʻia i loko o nā hana lāʻau lapaʻau ma ke ʻano he mea hoʻopili, disintegrant, a me ka viscosity modifier i ka hana papa.
Hoʻohana pū ʻia i loko o nā ʻano kumuhana e like me nā ʻaila a me nā gels ma muli o kāna mau waiwai rheological.
MC:
Hoʻohana mau ʻia ma ke ʻano he mānoanoa a me ka gelling agent i nā lāʻau lapaʻau, ʻoi aku ka nui o nā lāʻau lapaʻau waha a me nā hoʻonā ophthalmic.
7. Nā huahana mālama pilikino:
CMC:
Loaʻa i nā mea mālama pilikino like ʻole e like me ka toothpaste, shampoo, a me nā lotions ma ke ʻano he stabilizer a me ka mānoanoa.
MC:
Hoʻohana ʻia i nā noi like e like me CMC, e hāʻawi ana i ke ʻano a me ka paʻa o nā ʻano hana mālama pilikino.
8. Nā noi ʻoihana:
CMC:
Hoʻohana ʻia i nā ʻoihana e like me ka textiles, ka pepa, a me nā seramika no kona hiki ke hana ma ke ʻano he mea hoʻopaʻa, rheology modifier, a me ka mea mālama wai.
MC:
Loaʻa ka hoʻohana ʻana i nā mea hana, pena, a me nā mea hoʻopili ma muli o kona mānoanoa a paʻa.
ʻOiai ʻo ka carboxymethylcellulose (CMC) a me ka methylcellulose (MC) he mau mea ʻelua cellulose me nā noi ʻenehana like ʻole, hōʻike lākou i nā ʻokoʻa i loko o kā lākou mau hana kemika, nā ʻano solubility, nā profile viscosity, a me nā noi. He mea nui ka hoʻomaopopo ʻana i kēia mau ʻokoʻa no ke koho ʻana i ka derivative kūpono no nā hoʻohana kikoʻī i nā ʻoihana like ʻole, mai ka meaʻai a me nā lāʻau lapaʻau i ka mālama pilikino a me nā noi ʻoihana. Inā paha he pono no kahi mānoanoa pH-sensitive e like me CMC i nā huahana meaʻai a i ʻole kahi mea hoʻohana gelling e like me MC i nā ʻano lāʻau lapaʻau, hāʻawi kēlā me kēia derivative i nā pono kūʻokoʻa i kūpono i nā koi kikoʻī i nā ʻāpana like ʻole.
Ka manawa hoʻouna: Mar-22-2024