ʻO ka Hydroxyethyl Methyl Cellulose (HEMC) he mea ia o ka cellulose material polymer maoli. He polymer hiki ke hoʻoheheʻe ʻia i ka wai i hana ʻia ma hope o ka hoʻololi ʻana i ke kemika a loaʻa i kahi ākea o nā noi. Ma ke ʻano he cellulose ether koʻikoʻi i ka wai, he nui nā ʻano kino kino a me nā kemika a hoʻohana nui ʻia i ke kūkulu ʻana, nā uhi, nā mea hoʻonaninani, nā meaʻai a me nā lāʻau lapaʻau.
1. ʻO ke kinona a me ka haku mele
ʻO ka Hydroxyethyl methyl cellulose he cellulose i hoʻololi ʻia e ka hopena etherification o cellulose me ka ethylene oxide (epoxy) a me ka methyl chloride ma hope o ka mālama ʻana i ka alkali. Aia i loko o kāna ʻano kemika he iwi cellulose a me ʻelua mau mea pani, hydroxyethyl a me methoxy. Hiki i ka hoʻokomo ʻana i ka hydroxyethyl ke hoʻomaikaʻi i kona ʻano wai, ʻoiai ka hoʻokomo ʻana o ka methoxy hiki ke hoʻomaikaʻi i kona hydrophobicity, e ʻoi aku ka maikaʻi o ka hoʻonā ʻana a me ka hana ʻana i ke kiʻiʻoniʻoni.
2. Hoʻoheheʻe
ʻO ka Hydroxyethyl methyl cellulose he ether non-ionic cellulose me ka hoʻoheheʻe wai maikaʻi, hiki ke hoʻoheheʻe ʻia i ka wai anuanu a me ka wai wela. ʻAʻole ia e pane me nā ion i loko o ka wai i ka wā e hoʻoheheʻe ʻia ai, no laila loaʻa iā ia ka solubility maikaʻi loa ma lalo o nā ʻano wai like ʻole. Pono ke kaʻina hoʻoheheʻe e hoʻopuehu ʻia i loko o ka wai anuanu ma mua, a ma hope o ka wā o ka pehu ʻana, hoʻokumu ʻia kahi ʻano like ʻole a me ka ʻike. I loko o nā mea hoʻoheheʻe organik, hōʻike ka HEMC i ka solubility hapa, ʻoi aku ka nui o nā mea hoʻoheheʻe polar e like me ka ethanol a me ka ethylene glycol, hiki ke hoʻoheheʻe hapa.
3. ʻAiʻoniʻoni
ʻO ka viscosity o HEMC kekahi o kāna mau waiwai koʻikoʻi a hoʻohana nui ʻia i ka mānoanoa, hoʻokuʻu a me ka hana kiʻiʻoniʻoni. Hoʻololi kona viscosity me ka hoʻololi ʻana i ka neʻe ʻana, ka mahana a me ka nui o ka shear. Ma keʻano laulā, piʻi nui ka viscosity o ka hopena me ka piʻi ʻana o ka hoʻonā. ʻO kahi hoʻonā me ka hoʻonui kiʻekiʻe e hōʻike ana i ka viscosity kiʻekiʻe a kūpono no ka hoʻohana ʻana ma ke ʻano he mānoanoa no nā mea kūkulu hale, nā uhi a me nā mea hoʻopili. I loko o kekahi ʻano wela, e emi ana ka viscosity o ka solution HEMC me ka piʻi ʻana o ka mahana, a ua kūpono kēia waiwai no nā noi ʻoihana ma lalo o nā kūlana wela.
4. Paʻa wela
Hōʻike ka Hydroxyethyl methylcellulose i ke kūpaʻa wela maikaʻi i nā wela kiʻekiʻe a loaʻa kekahi ʻano pale wela. ʻO ka mea maʻamau, ma lalo o nā kūlana wela kiʻekiʻe (e like me ka 100 ° C ma luna o 100 ° C), ʻano paʻa kona ʻano molekala a ʻaʻole maʻalahi ka decompose a hoʻohaʻahaʻa paha. ʻAe kēia i ka HEMC e mālama i kona mānoanoa, paʻa wai a me nā waiwai hoʻopaʻa i nā wahi wela kiʻekiʻe i ka ʻoihana kūkulu (e like me ke kaʻina hoʻomaloʻo mortar) me ka ʻole o ka maikaʻi ʻole ma muli o nā loli wela.
5. Mānoanoa
Loaʻa i ka HEMC nā waiwai mānoanoa maikaʻi loa a he mānoanoa maikaʻi loa i hoʻohana nui ʻia i nā ʻōnaehana formulation. Hiki iā ia ke hoʻonui maikaʻi i ka viscosity o nā mea hoʻonā wai, emulsions a me ka hoʻokuʻu ʻana, a loaʻa iā ia nā waiwai shear thinning maikaʻi. Ma nā haʻahaʻa haʻahaʻa haʻahaʻa, hiki i ka HEMC ke hoʻonui nui i ka viscosity o ka ʻōnaehana, ʻoiai ma ka nui o ka shear rates e hōʻike ana i ka viscosity haʻahaʻa, e kōkua ana i ka hoʻomaikaʻi ʻana i ka maʻalahi o ka hana i ka wā o ka noi. ʻAʻole pili wale kona hopena mānoanoa i ka noʻonoʻo ʻana, akā pili pū kekahi i ka waiwai pH a me ka mahana o ka hopena.
6. Paʻa wai
Hoʻohana pinepine ʻia ʻo HEMC ma ke ʻano he mea mālama wai i ka ʻoihana kūkulu. Hiki i kona paʻa wai maikaʻi ke hoʻolōʻihi i ka manawa hoʻoheheʻe wai o nā mea i hoʻokumu ʻia i ka sima a hoʻomaikaʻi i ka hana hana a me ka hoʻopili ʻana o ka mortar hale. I ka wā o ke kaʻina hana, hiki i ka HEMC ke hōʻemi maikaʻi i ka nalowale o ka wai a pale aku i nā pilikia e like me ka haki ʻana a me ka nalowale o ka ikaika ma muli o ka hoʻomaloʻo wikiwiki ʻana o ka mortar. Eia kekahi, i loko o nā pena wai a me nā inika, hiki i ka mālama wai o HEMC ke mālama i ka wai o ka pena, e hoʻomaikaʻi i ka hana hana o ka pena a me ka maʻalahi o ka ʻili.
7. Biocompatibility a me ka palekana
No ka mea, loaʻa ka HEMC mai ka cellulose kūlohelohe, he biocompatibility maikaʻi a me ka haʻahaʻa haʻahaʻa. No laila, ua hoʻohana nui ʻia i ka lāʻau lapaʻau a me nā mea hoʻonaninani. Hiki ke hoʻohana ʻia ma ke ʻano he disintegrant a hoʻokuʻu mau ʻia paha i nā papa lāʻau lapaʻau e kōkua i ka hoʻokuʻu paʻa o nā lāʻau lapaʻau i loko o ke kino. Eia kekahi, ma ke ʻano he mānoanoa a me ka mea hana kiʻiʻoniʻoni i nā mea hoʻonaninani, hiki i ka HEMC ke hāʻawi i nā hopena moisturizing no ka ʻili, a ʻo kona palekana maikaʻi e kūpono ia no ka hoʻohana lōʻihi.
8. Nā kahua noi
Ma muli o nā waiwai multifunctional o hydroxyethyl methylcellulose, ua hoʻohana nui ʻia i nā ʻoihana ʻoihana he nui:
ʻOihana kūkulu: Ma nā mea kūkulu hale e like me ka mortar sima, ka pauka putty, a me nā huahana gypsum, hiki ke hoʻohana ʻia ʻo HEMC ma ke ʻano he mānoanoa, mea mālama wai, a me ka mea hoʻopili e hoʻomaikaʻi i ka hana hana a me ka maikaʻi o ka huahana.
ʻO nā uhi a me nā inika: Hoʻohana nui ʻia ʻo HEMC i nā pena wai a me nā inika ma ke ʻano he mānoanoa a me ka stabilizer e hoʻomaikaʻi i ka pae, kūpaʻa, a me ka nani o ka pena ma hope o ka maloʻo ʻana.
Lapaʻau lapaʻau: Ma ke ʻano he disintegrant, adhesive a hoʻokuʻu mau i nā mea lawe lāʻau, hiki iā ia ke hoʻoponopono i ka hoʻokuʻu ʻana o nā lāʻau lapaʻau i ke kino a hoʻomaikaʻi i ka bioavailability o nā lāʻau lapaʻau.
Nā mea hoʻonani a me nā huahana mālama pilikino: I loko o nā huahana mālama pilikino e like me nā lotions, creams, a me nā shampoos, hiki ke hoʻohana ʻia ʻo HEMC ma ke ʻano he mānoanoa a me ka moisturizer, a he maikaʻi ka ʻili a me ka lauoho.
ʻOihana meaʻai: Ma kekahi mau meaʻai, hiki ke hoʻohana ʻia ka HEMC ma ke ʻano he stabilizer, emulsifier a me ka mea hana kiʻiʻoniʻoni. ʻOiai ʻo kona hoʻohana ʻana i ka meaʻai e pili ana i nā palena hoʻoponopono i kekahi mau ʻāina, ua ʻike nui ʻia kona palekana.
9. Paʻa kaiapuni a me ka degradability
Ma ke ʻano he bio-based material, hiki ke hoʻohaʻahaʻa ʻia ka HEMC i ke kaiapuni, a ʻo kāna kaʻina degradation e hana nui ʻia e ka hana o nā microorganisms. No laila, emi iki ka haumia o ka HEMC i ke kaiapuni ma hope o ka hoʻohana ʻana a ʻoi aku ka maikaʻi o ke kaiapuni. Ma lalo o nā kūlana kūlohelohe, hiki i ka HEMC ke hoʻoheheʻe ʻia i loko o ka wai, carbon dioxide a me nā molekole liʻiliʻi ʻē aʻe, a ʻaʻole e hoʻoulu i ka hoʻohaumia ʻana i ka lepo a me nā kino wai.
ʻO ka Hydroxyethyl methylcellulose he mea nui loa i ka wai-soluble cellulose derivative. Ma muli o kāna mau waiwai kino a me nā mea kemika e like me ka mānoanoa maikaʻi loa, ka paʻa ʻana o ka wai, ke kūpaʻa wela a me ka biocompatibility, hoʻohana nui ʻia ia i nā ʻoihana he nui e like me ke kūkulu ʻana, nā uhi, nā lāʻau lapaʻau, nā mea hoʻonaninani, a me nā mea ʻē aʻe. mea hoʻohui hana koʻikoʻi i nā ʻōnaehana formulation like ʻole. ʻOi aku ma ke kahua kahi e pono ai e hoʻonui i ka viscosity huahana, hoʻonui i ke ola lawelawe a hoʻomaikaʻi paha i ka hana hana, hoʻokani ʻo HEMC i kahi hana hiki ʻole ke hoʻololi. Ma ka manawa like, ma ke ʻano he mea pili i ke kaiapuni, ua hōʻike ʻo HEMC i ka hoʻomau maikaʻi ʻana i nā noi ʻoihana a loaʻa nā manaʻo mākeke maikaʻi.
Ka manawa hoʻouna: Sep-27-2024