He aha ka ʻokoʻa ma waena o cellulose ether a me cellulose?

ʻO ka cellulose a me ka cellulose ether i loaʻa mai ka cellulose, kahi polymer maoli i loaʻa i loko o nā paia o nā mea kanu. Eia nō naʻe, loaʻa iā lākou nā ʻokoʻa like ʻole i kā lākou mau hana kemika a me nā waiwai:

1. Ke Kinohi Kemika: ʻO ka Cellulose kahi polysaccharide laina i hoʻopaʻa hou ʻia nā ʻāpana glucose i hoʻopili pū ʻia e nā paʻa glycosidic β(1→4). He polimer kaulahao pololei me ke kiʻekiʻe o ka crystallinity.
2. Hydrophilicity: He hydrophilic maoli ka Cellulose, ʻo ia hoʻi he pili ikaika i ka wai a hiki ke komo i ka nui o ka wai. Hoʻopili kēia waiwai i kāna ʻano ma nā ʻano noi like ʻole, me ka launa pū ʻana me nā ʻōnaehana wai e like me nā huila sima.
3. Solubility: ʻAʻole hiki ke hoʻoheheʻe ʻia ka cellulose maʻemaʻe i ka wai a me ka hapa nui o nā mea hoʻoheheʻe organik ma muli o kona ʻano crystalline kiʻekiʻe a me ka paʻa hydrogen nui ma waena o nā kaulahao polymer.
4. Derivatization: ʻO ka cellulose ether kahi ʻano hoʻololi o ka cellulose i loaʻa ma o ka derivatization kemika. Aia kēia kaʻina hana i ka hoʻokomo ʻana i nā pūʻulu hana, e like me ka hydroxyethyl, hydroxypropyl, methyl, a i ʻole nā ​​hui carboxymethyl, ma luna o ka iwi kuamoʻo cellulose. Hoʻololi kēia mau hoʻololi i nā waiwai o ka cellulose, me kona solubility, rheological behavior, a me ka launa pū ʻana me nā mea ʻē aʻe.
5. Hiki ke hoʻoheheʻe ʻia i ka wai: Hiki ke hoʻoheheʻe ʻia nā cellulose ethers i ka wai, ma muli o ke ʻano kikoʻī a me ke kiʻekiʻe o ka hoʻololi ʻana. Hoʻohana nui kēia solubility iā lākou i nā ʻoihana like ʻole, me nā lāʻau lapaʻau, nā meaʻai, nā mea hoʻonaninani, a me ke kūkulu ʻana.
6. Noi: Loaʻa i ka cellulose ethers ka hoʻohana ākea e like me nā mea mānoanoa, stabilizers, binders, a me nā mea hana kiʻiʻoniʻoni i nā ʻano huahana like ʻole a me nā kaʻina hana. I ke kūkulu ʻana, hoʻohana pinepine ʻia lākou e like me nā mea hoʻohui i nā mea hoʻokumu sima e hoʻomaikaʻi ai i ka hana, paʻa wai, adhesion, a me nā waiwai ʻē aʻe.

I ka hōʻuluʻulu manaʻo, ʻoiai ka cellulose a me ka cellulose ether i hoʻokaʻawale i kahi kumu maʻamau, ua hoʻololi ʻia ka cellulose ether e hoʻolauna i nā waiwai kikoʻī e hiki ke hoʻoheheʻe ʻia i ka wai a kūpono i nā noi like ʻole kahi e makemake ai ka mana o ka rheological a me ka launa pū me nā mea ʻē aʻe.