ʻO ka Hydroxypropyl methylcellulose (HPMC) kahi mea kemika multifunctional i hoʻohana nui ʻia i ka ʻoihana ʻoihana. ʻO ia ka non-ionic cellulose ether, i loaʻa ma ka hoʻololi kemika o ka cellulose maoli. ʻO kāna mau ʻāpana kumu, ʻo nā pūʻulu hydroxyl i loko o nā molekole cellulose e pani ʻia e nā hui methoxy a me hydroxypropyl. Hoʻohana nui ʻia ʻo HPMC ma nā ʻano he nui e like me ke kūkulu ʻana, ka uhi ʻana, ka lāʻau lapaʻau, ka meaʻai, a me nā mea hoʻonaninani ma muli o kona ʻano kino a me nā mea kemika.
1. Ka waiwai kino a me ke kemika
Hiki i ka HPMC ke ho'ohehe'e i ka wai a hiki ke ho'ohehe'e koke 'ia i ka wai anuanu e hana ai i ka ho'ohehe'e colloidal akaka a li'ili'i paha. He viscosity kiʻekiʻe kona ʻano wai, a pili kona viscosity i ka ʻike, ka mahana a me ke degere o ka hoʻololi ʻana i ka hopena. Paʻa ka HPMC ma kahi ākea pH ākea a loaʻa iā ia ka hoʻomanawanui maikaʻi i nā waikawa a me nā alkalis. Eia kekahi, he kiʻiʻoniʻoni maikaʻi loa ia, adhesion, paʻa wai a me nā waiwai mānoanoa.
2. Kaʻina hana
ʻO ke kaʻina hana o ka HPMC ka mea nui e like me ka mālama ʻana i ka alkali, ka hopena etherification a me ka mālama ʻana ma hope. ʻO ka mea mua, hoʻomaʻamaʻa mua ʻia ka cellulose kūlohelohe ma lalo o nā kūlana alkaline e hoʻāla ai, a laila etherified me nā methoxylating agents a me hydroxypropylating agents, a i ka hopena e loaʻa ai ka huahana hope ma o ka neutralization, ka holoi ʻana, ka maloʻo a me ka ʻoki ʻana. I ka wā o ke kaʻina hana, ʻo nā kūlana hopena e like me ka mahana, ke kaomi, ka manawa pane a me ka nui o nā reagents e hoʻopili i ka maikaʻi a me ka hana o HPMC.
3. Nā kahua noi
3.1 Hana hana
I ka ʻoihana kūkulu, hoʻohana nui ʻia ka HPMC ma ke ʻano he mānoanoa, hoʻopaʻa a me ka mālama wai no ka mortar sima. Hiki iā ia ke hoʻomaikaʻi i ka hana, hana hana a me ka ikaika hoʻopaʻa ʻana o ka mortar, ʻoiai e hōʻemi ana i ka emi ʻana a me ka haki ʻana o ka mortar.
3.2 ʻOihana uhi
Hoʻohana ʻia ʻo HPMC ma ke ʻano he mānoanoa, dispersant a me ka stabilizer i ka ʻoihana uhi. Hiki iā ia ke hoʻomaikaʻi i nā waiwai rheological o ka uhi ʻana, e maʻalahi i ka palaki, a hoʻomaikaʻi i ka pili ʻana a me ka palahalaha o ka uhi.
3.3 ʻOihana lāʻau lapaʻau a me nā meaʻai
Ma ka lāʻau lapaʻau, hoʻohana ʻia ʻo HPMC ma ke ʻano he mea hana kiʻiʻoniʻoni, mea hoʻokuʻu hoʻomau a me ka stabilizer no nā papa lāʻau. Hiki iā ia ke hoʻomalu i ka hoʻokuʻu ʻana o nā lāʻau lapaʻau a hoʻomaikaʻi i ke kūpaʻa o nā lāʻau lapaʻau. I ka ʻoihana meaʻai, hoʻohana ʻia ka HPMC ma ke ʻano he mea hoʻohui e mānoanoa, emulsify, hoʻokuʻu a hoʻopaʻa i ka meaʻai.
3.4 ʻOihana Hoʻonani
I nā mea hoʻonaninani, hoʻohana ʻia ʻo HPMC ma ke ʻano he mānoanoa, kiʻiʻoniʻoni mua a me ka stabilizer. Hiki iā ia ke hoʻonui i ka ʻike a me ka hoʻohana ʻana i nā mea hoʻonaninani, a hoʻomaikaʻi i ka paʻa a me ka moisturizing waiwai o nā huahana.
4. Nā Pōmaikaʻi a me nā Paʻakikī
Ma ke ʻano he kemika hana like ʻole, ua hōʻike ʻo HPMC i nā pono noi nui ma nā ʻano ʻoihana like ʻole. ʻO ka mea mua, loaʻa ia mai ka cellulose kūlohelohe a loaʻa iā ia ka biocompatibility maikaʻi a me nā waiwai mālama kaiapuni. ʻO ka lua, he paʻa kemika kiʻekiʻe ka HPMC a hiki ke mālama i kāna hana ma lalo o nā kūlana kaiapuni like ʻole. Eia nō naʻe, paʻakikī ke kaʻina hana o HPMC a loaʻa nā koi kiʻekiʻe no nā lako hana a me nā ʻenehana. Eia kekahi, ʻo ka paʻa ʻana o ka maikaʻi a me ka paʻa o ka hana ma waena o nā ʻāpana like ʻole o nā huahana he mau pilikia e pono ai ka nānā.
5. Nā ʻano hoʻomohala e hiki mai ana
Me ka holomua o ka ʻepekema a me ka ʻenehana a me nā loli i ka noi mākeke, e ʻoi aku ka laulā o ka noi no HPMC. Ma ke kahua kūkulu, ʻoi aku ka nui o ka HPMC i nā mea kūkulu hale hou a me nā hale ʻōmaʻomaʻo. Ma ke kahua o ka lāʻau lapaʻau a me ka meaʻai, e hoʻohana nui ʻia ka HPMC i ka hoʻomaikaʻi ʻana i nā kūlana olakino a palekana. Eia kekahi, i ka manawa e nānā nui ai nā kānaka i ka mālama ʻana i ke kaiapuni a me ka hoʻomohala hoʻomau, ʻo HPMC, ma ke ʻano he kumu waiwai hou, e hōʻike i kona mau pono kaiapuni ma nā kula ʻoi aku.
Ua lilo ʻo Hydroxypropyl methylcellulose (HPMC) i mea kemika koʻikoʻi i ka hana ʻenehana ma muli o kāna mau waiwai kūʻokoʻa a me nā kahua noi ākea. I ka wā e hiki mai ana, me ka hoʻomau mau ʻana o ka ʻenehana a me ka hoʻonui mau ʻana o nā kahua noi, e pāʻani nui ʻo HPMC i nā ʻoihana hou aku, e lawe mai ana i nā manawa hou a me nā pilikia i ka hoʻomohala ʻana i nā ʻoihana like ʻole.
Ka manawa hoʻouna: Iulai-31-2024