ʻO HPC (Hydroxypropyl Cellulose) a me HPMC (Hydroxypropyl Methylcellulose) ʻelua mau mea hoʻoheheʻe wai-soluble cellulose i hoʻohana mau ʻia i ka lāʻau lapaʻau, meaʻai a me nā ʻoihana kemika. ʻOiai ua like lākou ma kekahi mau ʻano, ʻokoʻa loa ko lākou mau ʻano kemika, nā waiwai a me nā hiʻohiʻona noi.
1. ʻO ke kinona
HPC: ʻO ka HPC he ʻāpana hydroxypropylated derivative o cellulose. Hana ʻia ia ma ka hana ʻana i ka cellulose me ka propylene oxide a me ka hoʻokomo ʻana i nā hui hydroxypropyl (-CH2CHOHCH3). Ma ke ʻano o ka HPC, ua hoʻololi ʻia kekahi hapa o nā pūʻulu hydroxyl o ka iwi kuamoʻo cellulose e nā hui hydroxypropyl, e hoʻoheheʻe ʻia i ka wai a me ka thermoplastic.
HPMC: HPMC he hapa hydroxypropylated a me ka methylated derivative o cellulose. Hoʻomākaukau ʻia ia ma ka hoʻokomo ʻana i nā hui hydroxypropyl a me nā hui methoxy (-OCH3) i loko o ka cellulose. ʻOi aku ka paʻakikī o ka molecular structure o HPMC, me ka hoʻokomo ʻana o nā pūʻulu hydroxypropyl a me nā pani methyl.
2. Ka waiwai kino a me ke kemika
Solubility: He mau polymers hiki ke hoʻoheheʻe ʻia i ka wai, akā ʻokoʻa kā lākou ʻano hoʻoheheʻe. Hiki ke hoʻoheheʻe maikaʻi ʻia ka HPC i ka wai anuanu a me kekahi mau mea hoʻoheheʻe kūlohelohe (e like me ka ethanol, propanol, a me nā mea ʻē aʻe). He maikaʻi loa ko HPMC i ka wai anuanu, akā loaʻa nā waiwai gelling i ka wai wela, ʻo ia hoʻi, ʻoi aku ka kiʻekiʻe o ka mahana, ʻo ka HPMC i hoʻoheheʻe ʻia i ka wai e hana i kahi gel a ʻaʻole e hoʻoheheʻe hou.
ʻO ke kūpaʻa wela: He thermoplasticity maikaʻi ka HPC, ʻo ia ka mea hiki ke palupalu a hoʻoheheʻe paha i nā mahana kiʻekiʻe, no laila hoʻohana pinepine ʻia i nā mea hoʻoheheʻe thermoplastic. Loaʻa i ka HPMC ke kūpaʻa wela kiʻekiʻe, ʻaʻole maʻalahi e hoʻoheheʻe a palupalu, a kūpono no ka noi ma lalo o nā kūlana wela kiʻekiʻe.
Viscosity: ʻOi aku ka nui o ka viscosity HPMC ma mua o ka HPC, ʻoi aku ka nui ma ka ʻoihana lāʻau lapaʻau, hoʻohana pinepine ʻia ka HPMC i nā hana e koi ai i ka hoʻopaʻa ikaika a i ʻole ka uhi ʻana, ʻoiai hoʻohana ʻia ka HPC i nā kūlana e koi ʻia ai ka viscosity haʻahaʻa.
3. Nā kahua noi
Kahua lāʻau lapaʻau:
HPC: He lāʻau lapaʻau ka HPC, hoʻohana nui ʻia ma ke ʻano he lāʻau hoʻopili papa, kahi mea hana kiʻiʻoniʻoni capsule shell, a me kahi mea matrix no ka hoʻokuʻu ʻia ʻana o nā lāʻau lapaʻau. Ma muli o kona thermoplasticity, ua kūpono hoʻi no kekahi mau hoʻomākaukau hoʻoheheʻe wela. Loaʻa i ka HPC ka biocompatibility maikaʻi a me ka degradability, a ua kūpono no ka hoʻohana ʻana ma ke ʻano he ʻōnaehana lawe lāʻau intraoral.
HPMC: Hoʻohana nui ʻia ʻo HPMC i ka ʻoihana lāʻau lapaʻau, a hoʻohana pinepine ʻia ma ke ʻano he mea matrix, mea uhi, mānoanoa a me ka stabilizer no nā papa hoʻokuʻu mau. ʻO nā waiwai gelling o HPMC e lilo ia i mea hoʻomalu hoʻokuʻu lāʻau maikaʻi loa, ʻoi aku hoʻi i ka ʻōpū o ka ʻōpū, kahi e hiki ai ke hoʻomalu pono i ka nui o ka hoʻokuʻu ʻana i ka lāʻau. ʻO kāna mau waiwai hana kiʻiʻoniʻoni maikaʻi hoʻi e lilo ia i mea koho nui no ka uhi papa a me ka uhi ʻana.
Kahua meaʻai:
HPC: Ma ka ʻoihana meaʻai, hiki ke hoʻohana ʻia ka HPC ma ke ʻano he mānoanoa, stabilizer a me ka emulsifier e hoʻomaikaʻi i ke ʻano a me ke ʻano o ka meaʻai. I kekahi mau hihia, hiki ke hoʻohana ʻia ma ke ʻano he kiʻiʻoniʻoni e hiki ke ʻai ʻia no kekahi mau meaʻai pono e mālama ʻia a hoʻokaʻawale paha.
HPMC: Hoʻohana mau ʻia ʻo HPMC ma ke ʻano he mānoanoa, emulsifier a me ka stabilizer i ka ʻoihana meaʻai, ʻoi aku hoʻi i nā meaʻai i kālua ʻia e like me ka berena a me nā pastries. Kōkua ka HPMC i ka hoʻomaikaʻi ʻana i ke ʻano a me ke ʻano o ka palaoa a hoʻolōʻihi i ke ola o ka meaʻai. Eia kekahi, hoʻohana nui ʻia ka HPMC i nā meaʻai meaʻai meaʻai ma ke ʻano he mea kanu i mea e pani ai i ka collagen holoholona.
Nā mea hoʻonani a me nā huahana mālama pilikino:
Hiki ke hoʻohana ʻia ʻo HPC a me HPMC i nā mea hoʻonaninani e like me nā mānoanoa, stabilizers a me nā mea hana kiʻiʻoniʻoni. No ka laʻana, hiki ke hoʻohana ʻia i ka mālama ʻili a me nā huahana lauoho e hoʻomaikaʻi i ka paʻi a me ka paʻa o ka huahana. ʻOi aku ka maikaʻi o ka HPMC ma ke ʻano he ʻano colloid transparent, e like me kahi mānoanoa i nā kulu maka, ʻoiai hoʻohana pinepine ʻia ʻo HPC i nā kūlana kahi e pono ai ke hoʻokumu ʻia kahi uhi maʻalahi.
Nā mea kūkulu hale a me nā uhi:
HPMC: Ma muli o kona hoʻopili maikaʻi ʻana a me ka paʻa ʻana o ka wai, hoʻohana nui ʻia ʻo HPMC i nā mea kūkulu hale e like me ka cement, mortar, putty a me ka gypsum e hoʻomaikaʻi ai i ka pili a hoʻomaikaʻi i ka hana hana.
HPC: ʻAʻole hoʻohana ʻia ʻo HPC i ka ʻoihana kūkulu hale a hoʻohana pinepine ʻia ma ke ʻano he mea hoʻohui a hoʻopaʻa ʻia paha no nā uhi.
4. Ka palekana a me ka palekana kaiapuni
Manaʻo ʻia ʻo HPC a me HPMC he mau mea palekana a hoʻohana nui ʻia i nā meaʻai, lāʻau lapaʻau a me nā huahana mālama pilikino. Loaʻa nā mea ʻelua i ka biocompatibility maikaʻi a me ka degradability, a ʻaʻole e hoʻokau i nā hopena ʻino i ke kino o ke kanaka. Eia nō naʻe, no ka mea ʻaʻole lākou i komo i loko o ke kino o ke kanaka a hoʻohana wale ʻia e like me nā mea kōkua, ʻaʻohe o lākou hopena systemic i ke kino o ke kanaka. Eia kekahi, ʻoi aku ka maikaʻi o ke kaʻina hana o HPC a me HPMC, a hiki ke hoʻohana hou ʻia nā kemika a me nā solvents i hoʻohana ʻia i ka hana.
ʻOiai ʻo ka HPC a me ka HPMC he mau cellulose derivatives a loaʻa nā noi keʻa i kekahi mau noi, he ʻokoʻa ko lākou i ka hoʻolālā kemika, nā waiwai kino a me nā wahi noi. ʻOi aku ka maikaʻi o ka HPC no nā noi e koi ana i nā mea thermoplastic, e like me ka hoʻokuʻu ʻia ʻana o nā lāʻau lapaʻau a me nā kaʻina hana hoʻoheheʻe wela, ʻoiai hoʻohana nui ʻia ʻo HPMC i nā lāʻau lapaʻau, meaʻai, kūkulu hale a me nā māla ʻē aʻe ma muli o kona hoʻopili maikaʻi ʻana, nā waiwai hana kiʻiʻoniʻoni a me ka mālama wai. . No laila, ʻo ka mea e koho ai ma muli o nā koi noi kikoʻī.
Ka manawa hoʻouna: Oct-22-2024