Mepụta maka Hydroxyethyl Cellulose

A na-arụpụtakarị hydroxyethyl cellulose (HEC) site na mmeghachi omume kemịkalụ na-achịkwa n'etiti cellulose na ethylene oxide, na-esote hydroxyethylation. Usoro a gụnyere ọtụtụ usoro, gụnyere:

1. Nkwadebe nke Cellulose: Usoro mmepụta na-amalite site na mwepu nke cellulose site na isi mmalite ndị dị ka osisi pulp, akwa owu, ma ọ bụ eriri osisi ndị ọzọ. A na-asachapụ cellulose ma na-edozi ya iji wepụ adịghị ọcha na lignin, na-ebute ihe cellulose a nụchara nke ọma.
2. Ethoxylation: N'ime usoro a, a na-emeghachi ihe cellulose dị ọcha na ethylene oxide na ọnụnọ nke alkaline catalysts n'okpuru ọnọdụ a na-achịkwa. Mkpụrụ ndụ Ethylene oxide na-agbakwunye na otu hydroxyl (-OH) nke cellulose polymer chain, na-ebute iwebata otu ethoxy (-OCH2CH2-) na ọkpụkpụ azụ cellulose.
3. Hydroxyethylation: Na-eso ethoxylation, cellulose ethoxylated na-emeghachi omume site na ethylene oxide na alkali n'okpuru ọnọdụ a na-achịkwa iji webata otu hydroxyethyl (-OCH2CH2OH) na agbụ cellulose. Mmeghachi omume hydroxyethylation a na-agbanwe njirimara nke cellulose, na-enye mmiri solubility na hydrophilicity na polymer.
4. Ịdị ọcha na ihicha: A na-asachapụ cellulose hydroxyethylated ka ọ wepụ ihe ndị fọdụrụnụ, ihe ndị na-emepụta ihe na ihe ndị sitere na ngwakọta mmeghachi omume. A na-asachapụ HEC dị ọcha, kpochaa, ma kpoo ya iji nweta ezigbo ntụ ntụ ma ọ bụ granules kwesịrị ekwesị maka ngwa dị iche iche.
5. Nhazi na nkwakọ ngwaahịa: N'ikpeazụ, ngwaahịa HEC na-adabere na njirimara ya dị ka viscosity, nha nha, na ịdị ọcha. A na-etinyezi ya n'ime akpa, drọm, ma ọ bụ arịa ndị ọzọ maka nkesa na nchekwa.

Usoro mmepụta ihe nwere ike ịdị iche iche dabere na ọkwa dị iche iche na ihe dị mma nke ngwaahịa HEC, yana usoro mmepụta nke ụlọ ọrụ n'otu n'otu. A na-ejikarị usoro njikwa mma arụ ọrụ n'oge usoro mmepụta ahụ iji hụ na nkwụsi ike, ịdị ọcha, na ịrụ ọrụ nke ngwaahịa HEC ikpeazụ.

A na-eji HEC n'ọtụtụ ọrụ dị iche iche, gụnyere ihe owuwu, ọgwụ ọgwụ, nlekọta onwe onye, ​​​​na nri, n'ihi na ọ na-eme ka ọ dị arọ, na-eme ka ọ dị ike, na-ejide mmiri.