Hydroxypropyl methyl cellulose (HPMC), akụrụngwacellulose, nwere ike nụchaa owu ma ọ bụ osisi pulp. Ọ dị mkpa ịkwanye ya tupu ma ọ bụ n'oge usoro alkalization. A na-eme pulverization site na ike igwe. Ebibi usoro ihe ejikọtara ọnụ nke akụrụngwa cellulose iji belata kristal na ogo polymerization wee mee ka mpaghara elu ya dịkwuo elu, si otú a na-emeziwanye ohere na ike mmeghachi omume kemịkalụ nke reagents na otu hydroxyl atọ na mgbanaka cellulose macromolecular glucose mgbanaka.
Hydroxypropyl methyl cellulose (HPMC)a na-eji dị ka akụrụngwa akụrụngwa na-emepụta mmanụ, nke nwere ike ịghọta na itinye n'ọrụ nke dum sugar, melite itinye n'ọrụ ọnụego nke akụrụngwa, ibelata mpụta ego nke mkpụrụ na broth gbaa ụka, na ibelata ọnụ ahịa nke mmiri mkpofu. Njirimara nkemethyl cellulosena-eme ka njikarịcha nke batch, nri-batch na usoro ịgba ụka na-aga n'ihu, na-ezere usoro nsogbu dị ka ịchịkwa ihe mejupụtara nke ọkara na ọnụego dilution; N'otu oge ahụ, ọ dịkwa mma maka ịhazi usoro ịgba ụka. N'ihi na Njirimara nkehydroxypropyl methyl cellulose (HPMC)yiri ihe ndị ọzọ na-eme ka mmiri na-agbaze mmiri, enwere ike iji ya dị ka onye na-emepụta ihe nkiri, onye na-emepụta ihe, onye na-emepụta ihe, emulsifier na stabilizer na mkpuchi latex na ihe mkpuchi resin mmiri na-edozi mmiri, na-eme ka o kwe omume ịme mkpuchi ihe nkiri ahụ nwere nguzogide abrasion dị mma, ọkwa ọkwa. Njirimara na adhesion, ma mee ka esemokwu dị elu dịkwuo mma, nkwụsi ike na acid na alkali, yana ndakọrịta na pigmenti ọla.
Hydroxypropyl methyl cellulose (HPMC)nwere mmetụta dị mma dị ka onye na-agba agba maka mkpuchi mkpuchi polyvinyl acetate na-acha ọcha. Ogo nke nnọchi nkecellulose etherna-abawanye, ma na-akwalitekwa iguzogide nje bacteria na mbuze.
Ọ bụ ezie na ụkpụrụ nke etherification njikọ nke hydroxypropyl methylcellulose (HPMC) adịghị mgbagwoju anya, ọ bụ alkalization, akụrụngwa na-etipịa ihe, na alkalization. Mpaghara dị iche iche nke etherification, mgbake mgbaze, nkewa centrifugal, ịsacha na ihicha gụnyere ọnụ ọgụgụ dị ukwuu nke teknụzụ isi na ihe ọmụma bara ụba.
Maka ụdị ngwaahịa dị iche iche, gburugburu ebe obibi ọ bụla nwere ọnọdụ nchịkwa kachasị ọhụrụ, dị ka okpomọkụ, oge, nrụgide na nchịkwa ihe. Ngwa inyeaka na ngwa njikwa bụ ihe a pụrụ ịdabere na ya na nke bara uru maka ịdị mma ngwaahịa kwụsiri ike na usoro mmepụta a pụrụ ịdabere na ya.
Njirimara ngwaahịa nkehydroxypropyl methyl cellulose:
1. Njirimara: Ngwaahịa a bụ ntụ ntụ na-acha ọcha, na-enweghị isi, enweghị ụtọ na ọ dịghị egbu egbu.
2. Mmetụta njide mmiri: N'ihi na ngwaahịa a nwere ike ịmịnye mmiri ọtụtụ ugboro karịa onwe ya. Nọgide na-edebe mmiri dị elu na ngwa agha, gypsum, agba na ngwaahịa ndị ọzọ.
3. Ngwaahịa a nwere ike gbazere na mmiri oyi iji mepụta ihe mgbaze transperent viscous.
4. Mgbasa na organic solvents: N'ihi na o nwere ụfọdụ ego nke hydrophobic genes, ngwaahịa a nwere ike agbaze na ụfọdụ organic solvents, ọ nwekwara ike-agbaze na agwakọta solvents nke mmiri na organic okwu.
5. Nguzogide nnu: Ebe ọ bụ na ngwaahịa a bụ ihe na-abụghị ionic na nke na-abụghị polyelectrolyte, ọ dị ntakịrị na ngwọta mmiri nke metal salts ma ọ bụ organic electrolytes. N'ihe banyere oke electrolyte, ọ nwere ike ịkpata gelation ma ọ bụ mmiri ozuzo.
6. Ọrụ elu: Ihe ngwọta mmiri nke ngwaahịa a nwere ọrụ elu.
Oge nzipu: Nov-29-2021
