Starch ether uye cellulose ether ese ari maviri marudzi eether anobva anoshandiswa mumaindasitiri akasiyana siyana, kunyanya mukuvaka uye machira.Kunyange vachigovana zvimwe zvakafanana maererano nekuve mapolymer anonyungudika nemvura ane kukora uye kudzikamisa zvivakwa, pane misiyano yakakosha pakati pawo, kunyanya mune kwaanobva uye chimiro chemakemikari.
Starch Ether:
1. Kwakabva:
- Natural Origin: Starch ether inotorwa kubva kune starch, iri carbohydrate inowanikwa mumiti.Starch inowanzotorwa muzvirimwa zvakaita sechibage, mbatatisi, kana mufarinya.
2. Chimiro cheKemikari:
- Polymer Kuumbwa: Starch i polysaccharide inoumbwa neglucose mayuniti akabatanidzwa ne glycosidic bond.Starch ethers zvakagadziridzwa zvinobva kune starch, uko mapoka ehydroxyl pamorekuru westarch anotsiviwa nemapoka ether.
3. Zvikumbiro:
-Indasitiri yeKuvaka: Starch ethers inowanzoshandiswa muindasitiri yekuvaka sekuwedzera mune gypsum-based zvigadzirwa, dhaka, uye simende-yakavakirwa zvinhu.Vanobatsira kuvandudza kushanda, kuchengetedza mvura, uye kunamatira.
4. Common Types:
-Hydroxyethyl Starch (HES): Imwe mhando yakajairika yestarch ether ndeye hydroxyethyl starch, uko mapoka ehydroxyethyl anounzwa kuti agadzirise chimiro chestarch.
Cellulose Ether:
1. Kwakabva:
- Natural Origin: Cellulose ether inotorwa kubva kune cellulose, yakasikwa polymer inowanikwa musero madziro emiti.Icho chikamu chikuru chemiti yesero madziro uye inotorwa kubva kune zvinyorwa zvakaita sehuni pulp kana donje.
2. Chimiro cheKemikari:
-Kuumbwa kwePolymer: Cellulose iine mutsara wepolymer ine mayunitsi eglucose akabatanidzwa ne β-1,4-glycosidic bond.Cellulose ethers anobva ku cellulose, uko mapoka ehydroxyl ari pamorekuru we cellulose anogadziridzwa nemapoka ether.
3. Zvikumbiro:
-Indasitiri yeKuvaka: Cellulose ethers inowana kushandiswa kwakapararira muindasitiri yekuvaka, yakafanana neiyo starch ethers.Iwo anoshandiswa muzvigadzirwa-samende, zvinonamira mataira, uye dhaka kusimudzira kuchengetwa kwemvura, kushanda, uye kunamatira.
4. Common Types:
- Hydroxyethyl Cellulose (HEC): Imwe yakajairika mhando ye cellulose ether ndeye hydroxyethyl cellulose, uko hydroxyethyl mapoka anounzwa kuti agadzirise iyo cellulose chimiro.
- Methyl Cellulose (MC): Imwe mhando yakajairika ndeye methyl cellulose, uko methyl mapoka anounzwa.
Misiyano Yakakosha:
1. Kwakabva:
- Starch ether inotorwa kubva kune starch, carbohydrate inowanikwa mumiti.
- Cellulose ether inotorwa kubva kune cellulose, chikamu chikuru chechirimwa masero emadziro.
2. Chimiro cheKemikari:
- Iyo base polymer ye starch ether is starch, polysaccharide inoumbwa neglucose units.
- Iyo base polymer ye cellulose ether is cellulose, mutsara wepolymer inoumbwa neglucose mayunitsi.
3. Zvikumbiro:
- Mhando mbiri dzeether dzinoshandiswa muindasitiri yekuvaka, asi mashandisirwo chaiwo uye magadzirirwo anogona kusiyana.
4. Common Types:
- Hydroxyethyl starch (HES) uye hydroxyethyl cellulose (HEC) mienzaniso yezvinobvamo zveether.
nepo starch ether uye cellulose ether ese ari maviri-anonyungudika mapolymers anoshandiswa sekuwedzera mune akasiyana maapplication, kwaanobva, base polymer, uye chaiwo makemikari zvimiro zvinosiyana.Misiyano iyi inogona kupesvedzera mashandiro avo mune chaiwo magadzirirwo uye mashandisirwo.
Nguva yekutumira: Jan-06-2024