ʻO Carboxymethyl cellulose (CMC) a me ka hydroxyethyl cellulose (HEC) ʻelua mau mea hoʻohana cellulose maʻamau, i hoʻohana nui ʻia i ka meaʻai, ka lāʻau lapaʻau, nā mea hoʻonaninani, nā mea kūkulu hale a me nā māla ʻē aʻe. ʻOiai ua loaʻa lāua ʻelua mai ka cellulose maoli a loaʻa mai ma ka hoʻololi kemika, aia nā ʻokoʻa ʻokoʻa i ka hoʻolālā kemika, nā waiwai physicochemical, nā kahua noi a me nā hopena hana.
1. ʻO ke kinona
ʻO ka hiʻohiʻona nui o ka carboxymethyl cellulose (CMC) ʻo ia ka hoʻololi ʻana o nā pūʻulu hydroxyl ma nā molekole cellulose e nā hui carboxymethyl (-CH2COOH). ʻO kēia hoʻololi kemika e hoʻoheheʻe ʻia ka CMC i ka wai, ʻoi aku ka nui o ka wai e hana i kahi solution colloidal viscous. Ua pili loa ka viscosity o kona ho'onā 'ana i kona degere o ka ho'ololi 'ana ('o ia ho'i ke degere o ka ho'ololi 'ana i ka carboxymethyl).
Hoʻokumu ʻia ka Hydroxyethyl cellulose (HEC) ma ka hoʻololi ʻana i nā pūʻulu hydroxyl i cellulose me ka hydroxyethyl (-CH2CH2OH). ʻO ka hui hydroxyethyl i loko o ka mole HEC e hoʻonui i ka wai solubility a me ka hydrophilicity o cellulose, a hiki ke hana i kahi gel ma lalo o kekahi mau kūlana. Hiki i kēia hana ke hōʻike iā HEC i ka mānoanoa maikaʻi, ka hoʻokuʻu ʻana a me ka hoʻopaʻa ʻana i nā hopena i loko o ka hoʻonā wai.
2. Ka waiwai kino a me ke kemika
Hoʻoheheʻe wai:
Hiki ke hoʻoheheʻe ʻia ʻo CMC i loko o ka wai anuanu a me ka wai wela e hana ai i kahi hopena colloidal transparent a translucent. He kiʻekiʻe ka viscosity kona hopena, a hoʻololi ka viscosity me ka mahana a me ka waiwai pH. Hiki ke hoʻoheheʻe ʻia ka HEC i ka wai anuanu a me ka wai wela, akā ke hoʻohālikelike ʻia me CMC, ʻoi aku ka lohi o kona dissolution rate a lōʻihi ka lōʻihi o ka hana ʻana i kahi hopena like. He haʻahaʻa ka viscosity solution o HEC, akā ʻoi aku ka maikaʻi o ka paʻakai paʻakai a me ka paʻa.
Hoʻoponopono viscosity:
Hoʻopili maʻalahi ka viscosity o CMC e ka waiwai pH. ʻOi aku ka kiʻekiʻe ma lalo o nā kūlana kūʻokoʻa a i ʻole alkaline, akā e hoʻemi nui ʻia ka viscosity ma lalo o nā kūlana acidic ikaika. ʻOi aku ka liʻiliʻi o ka viscosity o HEC e ka waiwai pH, ʻoi aku ka laulā o ka paʻa pH, a kūpono no nā noi ma lalo o nā kūlana acidic a me ka alkaline.
Paʻakai pale:
Paʻa loa ka CMC i ka paʻakai, a ʻo ka hele ʻana o ka paʻakai e hōʻemi nui i ka viscosity o kāna hopena. ʻO HEC, ma ka ʻaoʻao ʻē aʻe, hōʻike i ke kūpaʻa paʻakai ikaika a hiki ke hoʻomau i ka hopena mānoanoa maikaʻi ma kahi ʻano paʻakai kiʻekiʻe. No laila, loaʻa i ka HEC nā pōmaikaʻi i nā ʻōnaehana e koi ai i ka hoʻohana ʻana i nā paʻakai.
3. Nā wahi noi
ʻOihana meaʻai:
Hoʻohana nui ʻia ʻo CMC i ka ʻoihana meaʻai e like me ka mānoanoa, stabilizer a me ka emulsifier. No ka laʻana, i nā huahana e like me ka ice cream, nā mea inu, nā jams, a me nā kīʻaha, hiki i ka CMC ke hoʻomaikaʻi i ka ʻono a me ka paʻa o ka huahana. Hoʻohana pinepine ʻia ʻo HEC i ka ʻoihana meaʻai a hoʻohana nui ʻia i kekahi mau huahana me nā koi kūikawā, e like me nā meaʻai haʻahaʻa-calorie a me nā meaʻai meaʻai kūikawā.
ʻO nā lāʻau lapaʻau a me nā mea hoʻonaninani:
Hoʻohana pinepine ʻia ʻo CMC e hoʻomākaukau i nā papa hoʻokuʻu mau ʻia o nā lāʻau lapaʻau, nā wai maka, a me nā mea ʻē aʻe, no kona biocompatibility maikaʻi a me ka palekana. Hoʻohana nui ʻia ʻo HEC i nā mea hoʻonaninani e like me nā lotions, nā ʻaila a me nā shampoos ma muli o kāna mau kiʻiʻoniʻoni maikaʻi loa a me ka moisturizing waiwai, hiki ke hāʻawi i kahi manaʻo maikaʻi a me ka hopena moisturizing.
Nā mea kūkulu hale:
I nā mea kūkulu hale, hiki ke hoʻohana ʻia ʻo CMC a me HEC e like me nā mea mānoanoa a me nā mea mālama wai, ʻoi aku hoʻi i nā mea hana sima a me ka gypsum. Hoʻohana nui ʻia ʻo HEC i nā mea kūkulu hale ma muli o kona kūpaʻa paʻakai maikaʻi a paʻa, hiki ke hoʻomaikaʻi i ka hana hana a me ka lōʻihi o nā mea.
ʻOhi ʻaila:
I ka ʻaila ʻaila, CMC, ma ke ʻano he mea hoʻohui no ka wai wili, hiki ke hoʻomalu pono i ka viscosity a me ka nalowale o ka wai o ka lepo. ʻO HEC, ma muli o kona kūpaʻa paʻakai kiʻekiʻe a me nā waiwai mānoanoa, ua lilo ia i mea koʻikoʻi i nā kemika o ka ʻaila, i hoʻohana ʻia i ka wai wili a me ka wai haʻihaʻi e hoʻomaikaʻi ai i ka hana pono a me nā pono waiwai.
4. Mālama kaiapuni a me ka biodegradability
Loaʻa ʻia ʻo CMC a me HEC mai ka cellulose kūlohelohe a loaʻa iā ia ka biodegradability maikaʻi a me ke aloha o ke kaiapuni. I loko o ke kaiapuni kūlohelohe, hiki ke hoʻohaʻahaʻa ʻia e nā microorganism e hana i nā mea ʻino ʻole e like me carbon dioxide a me ka wai, e hōʻemi ana i ka pollution i ke kaiapuni. Eia kekahi, no ka mea ʻaʻohe mea ʻawaʻawa a maikaʻi ʻole, hoʻohana nui ʻia lākou i nā huahana e pili pono ana i ke kino kanaka, e like me ka meaʻai, ka lāʻau lapaʻau a me nā mea hoʻonaninani.
ʻOiai ʻo ka carboxymethyl cellulose (CMC) a me ka hydroxyethyl cellulose (HEC) he mau derivatives ʻelua o ka cellulose, loaʻa iā lākou nā ʻokoʻa koʻikoʻi i ka hana kemika, nā waiwai physicochemical, nā kahua noi a me nā hopena hana. Hoʻohana nui ʻia ʻo CMC i ka meaʻai, ka lāʻau lapaʻau, ka ʻili ʻaila a me nā māla ʻē aʻe ma muli o kona viscosity kiʻekiʻe a me ka maʻalahi i ka hopena o ke kaiapuni. Eia naʻe, hoʻohana nui ʻia ʻo HEC i nā mea hoʻonaninani, nā mea kūkulu hale, a me nā mea ʻē aʻe ma muli o kona kūpaʻa paʻakai maikaʻi loa, kūpaʻa a me nā waiwai hana kiʻiʻoniʻoni. I ke koho ʻana e hoʻohana iā ia, pono e koho i ka derivative cellulose kūpono loa e like me ke ʻano o ka noi kikoʻī a pono e hoʻokō i ka hopena hoʻohana maikaʻi loa.
Ka manawa hoʻouna: ʻAukake-21-2024