Ọdịiche dị n'etiti hydroxypropyl starch na Hydroxypropyl methyl cellulose

Hydroxypropyl starch na hydroxypropyl methyl cellulose (HPMC) bụ ma gbanwetụrụ polysaccharides ejiri mee ihe n'ụlọ ọrụ dị iche iche, gụnyere nri, ọgwụ, ihe ịchọ mma, na ihe owuwu. Ọ bụ ezie na ha na-ekerịta ụfọdụ myirịta, ha nwere ọdịiche dị iche na usoro nhazi kemịkalụ, akụrụngwa na ngwa. Nke a bụ isi ọdịiche dị n'etiti hydroxypropyl starch na HPMC:

Ọdịdị kemịkal:

1. Hydroxypropyl Starch:
   • Hydroxypropyl starch bụ starch emezigharịrị enwetara site na iwebata otu hydroxypropyl na molekul starch.
   • Starch bụ polysaccharide nke mejupụtara nkeji glucose jikọtara ọnụ site na njikọ glycosidic. Hydroxypropylation gụnyere ngbanwe nke otu hydroxyl (-OH) n'ime molekul starch na otu hydroxypropyl (-CH2CHOHCH3).
2. Hydroxypropyl Methyl Cellulose (HPMC):
   • HPMC bụ cellulose ether gbanwetụrụ site na iwebata ma hydroxypropyl na methyl otu n'ime molekul cellulose.
   • Cellulose bụ polysaccharide mejupụtara nkeji glucose jikọtara ọnụ site na njikọ β (1→4) glycosidic. Hydroxypropylation na-ewebata otu hydroxypropyl (-CH2CHOHCH3), ebe methylation na-ewebata otu methyl (-CH3) n'ime ọkpụkpụ azụ cellulose.

Njirimara:

1. Solubility:
   • Hydroxypropyl starch na-abụkarị soluble na mmiri ọkụ mana ọ nwere ike igosipụta oke solubility na mmiri oyi.
   • HPMC bụ soluble na ma oyi na mmiri ọkụ, akpụ doro anya, viscous ngwọta. Solubility nke HPMC na-adabere n'ókè nke nnọchi (DS) na arọ molekụla nke polymer.
2. Viscosity:
   • Hydroxypropyl starch nwere ike igosi ihe na-eme ka viscosity dịkwuo elu, mana viscosity ya na-adịkarị ala ma e jiri ya tụnyere HPMC.
   • A maara HPMC maka ihe njiri mara mma na viscosity na-agbanwe agbanwe. Enwere ike imezi viscosity nke ngwọta HPMC site n'ịgbanwe mkpokọta polymer, DS, na molecular arọ.

Ngwa:

1. Nri na ọgwụ:
   • A na-ejikarị starch hydroxypropyl eme ihe dị ka onye na-agbapụta, stabilizer, na onye na-ahụ maka gelling na ngwaahịa nri dị ka ofe, sauces, na desserts. Enwere ike iji ya na usoro ọgwụ.
   • A na-eji HPMC eme ihe n'ọtụtụ ebe na nri, ọgwụ na ihe ịchọ mma dị ka onye na-eku ume, emulsifier, stabilizer, onye na-eme ihe nkiri na mbụ na onye na-ahapụ ya. A na-ahụkarị ya na ngwaahịa ndị dị ka mbadamba nkume, mmanụ mmanụ, ude, na ihe nlekọta onwe onye.
2. Ihe owuwu na ihe owuwu ụlọ:
   • A na-eji HPMC eme ihe n'ọtụtụ ebe na ụlọ ọrụ ihe owuwu dị ka ihe mgbakwunye na ngwaahịa ndị sitere na ciment dị ka nrapado taịlị, ngwa agha, ihe nrụnye, na plasta. Ọ na-enye njide mmiri, ịrụ ọrụ, nrapado, na arụmọrụ dị mma na ngwa ndị a.

Mmechi:

Ọ bụ ezie na ma hydroxypropyl starch na HPMC bụ polysaccharides gbanwetụrụ nwere ọrụ ndị yiri ya, ha nwere ụdị kemịkalụ, akụrụngwa na ngwa dị iche iche. A na-eji starch hydroxypropyl eme ihe na nri na ngwa ọgwụ, ebe HPMC na-ahụta ọtụtụ ojiji na nri, ọgwụ, ihe ịchọ mma, na ihe owuwu. Nhọrọ n'etiti hydroxypropyl starch na HPMC dabere na ihe achọrọ nke ngwa a chọrọ.