E pili ana i ka mahana gel o ka hydroxypropyl methyl celluloseHPMC, He nui nā mea hoʻohana e hoʻolohe ʻole i ka mahana gel o ka hydroxypropyl methyl cellulose. I kēia manawa ua ʻokoʻa ʻia ka hydroxypropyl methyl cellulose e like me kona viscosity, akā no kekahi mau kaiapuni kūikawā a me nā ʻoihana kūikawā, ʻaʻole lawa ia e hōʻike wale i ka viscosity o ka huahana. Hōʻike pōkole kēia i ka mahana gel o ka hydroxypropyl methylcellulose.
ʻO ka maʻiʻo o nā pūʻulu methoxy e pili pono ana i ke kiʻekiʻe o ka dialysis o ka cellulose, a hiki ke hoʻoponopono ʻia ka ʻike o nā pūʻulu methoxy ma ke kāohi ʻana i ke ʻano, ka wela o ka hopena a me ka manawa pane. I ka manawa like, pili ka degere o ka carboxylation i ke ʻano o ka hoʻololi ʻana o ka hydroxyethyl a i ʻole hydroxypropyl. No laila, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai o nā cellulose ethers me ka mahana gel kiʻekiʻe. Pono e ʻimi ʻia kēia kaʻina hana, no laila ʻaʻole ia he haʻahaʻa ka ʻike o ka hui methoxy, ʻoi aku ka haʻahaʻa o ke kumu kūʻai o cellulose ether, ʻoi aku ka kiʻekiʻe o kona kumukūʻai.
Hoʻoholo ʻia ka mahana o ka gel e ka hui methoxy, a hoʻoholo ʻia ka paʻa wai e ka hui hydroxypropoxy. ʻEkolu wale nō mau pūʻulu hoʻololi ma cellulose. E ʻimi i kāu wela hoʻohana kūpono, paʻa wai kūpono, a laila e hoʻoholo i ke kumu hoʻohālike o kēia cellulose.
ʻO ka mahana gel he wahi koʻikoʻi no ka hoʻohana ʻana ocellulose etera. Ke ʻoi aku ka mahana o ka ambient i ka mahana gel, e hoʻokaʻawale ka cellulose ether mai ka wai a nalowale ka paʻa wai. ʻO ka mahana gel o cellulose ether ma ka mākeke hiki ke hoʻokō pono i nā pono o ke kaiapuni kahi e hoʻohana ʻia ai ka mortar (koe wale no nā wahi kūikawā). Pono nā mea hana e noʻonoʻo i kēia.
Ka manawa hoʻouna: Apr-26-2024