ʻO ka starch ether a me ka cellulose ether nā ʻano ʻelua o nā derivatives ether i hoʻohana ʻia i nā ʻoihana like ʻole, ʻoi loa i ke kūkulu ʻana a me nā uhi. ʻOiai kaʻana like lākou i nā ʻano polymers wai-soluble me ka mānoanoa a me ka hoʻopaʻa ʻana i nā waiwai, aia nā ʻokoʻa koʻikoʻi ma waena o lākou, ma mua o ko lākou kumu a me ke ʻano kemika.
Starch Etera:
1. Puna:
- Ke Kumu Kūlohelohe: Loaʻa ʻia ka starch ether mai ka starch, ʻo ia hoʻi he kaʻapona i loaʻa i nā mea kanu. Lawe pinepine ʻia ka starch mai nā mea kanu e like me ke kulina, ka ʻuala, a i ʻole ka cassava.
2. Hana Kemika:
- Polymer Composition: ʻO ka mākiko he polysaccharide i haku ʻia me nā ʻāpana glucose i hoʻopili ʻia e nā paʻa glycosidic. Hoʻololi ʻia nā eter starch o ka starch, kahi i hoʻololi ʻia ai nā hui hydroxyl ma ka mole starch me nā hui etera.
3. Nā noi:
- Hana Hana: Hoʻohana pinepine ʻia nā ethers starch i ka ʻoihana kūkulu e like me nā mea hoʻohui i nā huahana gypsum-based, mortars, a me nā mea hoʻokumu ʻia. Hāʻawi lākou i ka hoʻomaikaʻi ʻana i ka hana, ka mālama ʻana i ka wai, a me ka hoʻopili.
4. Nā ʻano maʻamau:
- Hydroxyethyl Starch (HES): ʻO kekahi ʻano maʻamau o ka starch ether ʻo ka hydroxyethyl starch, kahi i hoʻokomo ʻia ai nā hui hydroxyethyl e hoʻololi i ke ʻano o ka starch.
Cellulose Etera:
1. Puna:
- Ke Kumu Kūlohelohe: Loaʻa ʻia ka cellulose ether mai ka cellulose, kahi polymer maoli i loaʻa i loko o nā paia o nā mea kanu. He mea nui ia o nā paia o nā mea kanu a lawe ʻia mai nā kumu e like me ka pulp lāʻau a i ʻole ka pulupulu.
2. Hana Kemika:
- Hoʻohui Polymer: ʻO ka Cellulose kahi polymer linear i loaʻa nā ʻāpana glucose i hoʻopili ʻia e nā paʻa β-1,4-glycosidic. ʻO nā cellulose ethers nā mea i loaʻa i ka cellulose, kahi i hoʻololi ʻia ai nā hui hydroxyl ma ka mole cellulose me nā hui ether.
3. Nā noi:
- Ka Hana Hana Hana: Loaʻa ka hoʻohana nui ʻana o ka cellulose ethers i ka ʻoihana kūkulu hale, e like me ka starch ethers. Hoʻohana ʻia lākou i nā huahana ciment-based, tile adhesives, a me nā morta e hoʻomaikaʻi i ka paʻa ʻana o ka wai, ka hana, a me ka hoʻopili.
4. Nā ʻano maʻamau:
- Hydroxyethyl Cellulose (HEC): ʻO kekahi ʻano maʻamau o ka cellulose ether ʻo ka hydroxyethyl cellulose, kahi i hoʻokomo ʻia ai nā hui hydroxyethyl e hoʻololi i ke ʻano cellulose.
- Methyl Cellulose (MC): ʻO kekahi ʻano maʻamau ʻo methyl cellulose, kahi i hoʻokomo ʻia ai nā hui methyl.
Nā ʻokoʻa nui:
1. Puna:
- Loaʻa ʻia ka starch ether mai ka starch, kahi kaʻapona i loaʻa i nā mea kanu.
- Loaʻa ka cellulose ether mai ka cellulose, kahi mea nui o nā paia o nā mea kanu.
2. Hana Kemika:
- ʻO ka polymer kumu no ka starch ether he starch, he polysaccharide i haku ʻia me nā ʻāpana glucose.
- ʻO ka polymer kumu no ka cellulose ether he cellulose, he polymer linear i haku ʻia me nā ʻāpana glucose.
3. Nā noi:
- Hoʻohana ʻia nā ʻano ether ʻelua i ka ʻoihana kūkulu, akā ʻokoʻa paha nā noi kikoʻī a me nā ʻano.
4. Nā ʻano maʻamau:
- Hydroxyethyl starch (HES) a me ka hydroxyethyl cellulose (HEC) he mau la'ana o keia mau hua etera.
ʻOiai ʻo ka starch ether a me ka cellulose ether nā polymers hiki ke hoʻohana ʻia i ka wai i hoʻohana ʻia ma ke ʻano he mea hoʻohui i nā noi like ʻole, ʻokoʻa ko lākou kumu, polymer kumu, a me nā hale kemika kikoʻī. Hiki i kēia mau ʻokoʻa ke hoʻololi i kā lākou hana ma nā ʻano kikoʻī a me nā noi.
Ka manawa hoʻouna: Jan-06-2024