Kedu ihe dị iche n'etiti starch ether na cellulose ether?

Starch ether na cellulose ether bụ ụdị nke ether ether eji eme ihe na ụlọ ọrụ dị iche iche, karịsịa na-ewu na mkpuchi. Ọ bụ ezie na ha na-ekerịta ụfọdụ myirịta n'ihe gbasara ịbụ polymers soluble mmiri nwere ihe na-eme ka ọ sie ike na nkwụsi ike, enwere ọdịiche dị n'etiti ha, bụ isi na isi mmalite ha na usoro kemịkal.

Starch Ether:

1. Isi mmalite:
- Mmalite eke: Starch ether sitere na starch, nke bụ carbohydrate dị na osisi. A na-ewepụtakarị starch n'ihe ọkụkụ dị ka ọka, poteto, ma ọ bụ akpụ.

2. Ọdịdị kemịkalụ:
- Ihe mejupụtara polymer: Starch bụ polysaccharide mejupụtara nkeji glucose jikọtara ya na njikọ glycosidic. Starch ethers bụ ihe eji eme starch emezigharị, ebe a na-eji otu ether dochie otu hydroxyl dị na molekul starch.

3. Ngwa:
- Ụlọ ọrụ ihe owuwu: A na-ejikarị ethers starch eme ihe na ụlọ ọrụ mmepụta ihe dị ka ihe mgbakwunye na ngwaahịa gypsum, ngwa agha, na ihe ndị dabeere na ciment. Ha na-enye aka n'ịrụ ọrụ nke ọma, njide mmiri, na nrapado.

4. Ụdị nkịtị:
- Hydroxyethyl Starch (HES): Otu ụdị starch ether a na-ahụkarị bụ hydroxyethyl starch, ebe a na-ewebata otu hydroxyethyl iji gbanwee nhazi starch.

Cellulose ether:

1. Isi mmalite:
- Mmalite eke: Cellulose ether sitere na cellulose, polymer eke dị na mgbidi cell nke osisi. Ọ bụ akụkụ bụ isi nke mgbidi cell osisi na-esi na isi mmalite dị ka osisi pulp ma ọ bụ owu.

2. Ọdịdị kemịkalụ:
- Ihe mejupụtara polymer: Cellulose bụ polymer linear nke nwere nkeji glucose jikọtara ya na njikọ β-1,4-glycosidic. Cellulose ethers bụ mmepụta nke cellulose, ebe hydroxyl dị iche iche na cellulose molecule na-gbanwere na ether otu.

3. Ngwa:
- Industrylọ ọrụ ihe owuwu: Cellulose ethers na-ahụta ojiji zuru ebe niile na ụlọ ọrụ ihe owuwu, dị ka starch ethers. A na-eji ha eme ihe na ngwaahịa simenti, ihe ntanye tile, na ngwa agha iji kwalite njide mmiri, ịrụ ọrụ, na nrapado.

4. Ụdị nkịtị:
- Hydroxyethyl Cellulose (HEC): Otu ụdị cellulose ether a na-ahụkarị bụ hydroxyethyl cellulose, ebe a na-ewebata otu hydroxyethyl iji gbanwee nhazi cellulose.
- Methyl Cellulose (MC): Ụdị ọzọ a na-ahụkarị bụ methyl cellulose, ebe a na-ewebata otu methyl.

Ndịiche dị mkpa:

1. Isi mmalite:
- Starch ether sitere na starch, carbohydrate dị na osisi.
- Cellulose ether sitere na cellulose, bụ isi akụkụ nke mgbidi cell osisi.

2. Ọdịdị kemịkalụ:
- polymer isi maka ether starch bụ starch, polysaccharide nke mejupụtara nkeji glucose.
Ihe ndabere maka cellulose ether bụ cellulose, polymer linear nke mejupụtara nkeji glucose.

3. Ngwa:
- A na-eji ụdị ethers abụọ ahụ na ụlọ ọrụ ihe owuwu, mana ngwa na nhazi pụrụ iche nwere ike ịdị iche.

4. Ụdị nkịtị:
- Hydroxyethyl starch (HES) na hydroxyethyl cellulose (HEC) bụ ihe atụ nke ether ndị a.

mgbe starch ether na cellulose ether bụ ma mmiri-soluble polymers eji dị ka mgbakwunye na dị iche iche ngwa, ha isi iyi, isi polymer, na kpọmkwem chemical owuwu dị iche. Ndịiche ndị a nwere ike imetụta arụmọrụ ha na nhazi na ngwa dị iche iche.


Oge nzipu: Jan-06-2024