Ihe dị iche n'etiti hydroxypropyl starch ether na cellulose ether

Ugbua, ọtụtụ mmadụ amaghị nke ọma gbasara hydroxypropyl starch ether. Ha chere na ọ dịghị ihe dị iche n'etiti hydroxypropyl starch ether na rọrọn nkịtị, mana ọ bụghị ya. Ọnụọgụ hydroxypropyl starch ether eji eme ihe na ngwaahịa rọt dị obere nke ukwuu, mgbakwunye nke polar nwere ike ime ka ọ dị mma.

Hydroxypropyl starch ether (HPS) bụ ntụ ntụ ọcha dị nro nke a na-enweta site na ịgbanwe osisi ndị sitere n'okike, nke a na-eme ka ọ dị ọkụ nke ukwuu, wee fesa ya na mmiri, na-enweghị ihe ndị na-eme ka plastik dị nro. Ọ dị nnọọ iche na starch nkịtị ma ọ bụ starch agbanwere agbanwe.

Na hydroxypropyl methyl cellulose, nke a makwaara dị ka hypromellose, hydroxypropyl methyl red vitamin ether, bụ iji owu cellulose dị ọcha dị ka ihe eji arụ ọrụ, ma jiri lye gwọọ ya na 35-40 Celsius C maka ọkara awa. Pịa, gwerie cellulose ahụ, ma mee ka ọ dị mma na 35 Celsius, ka nkezi nke polymerization nke eriri alkali enwetara dị n'ime oke achọrọ. Tinye eriri alkali n'ime ketulu etherification, tinye propylene oxide na methyl chloride n'usoro, ma mee ka ọ dị ọkụ na 50-80 Celsius maka awa ise, nrụgide kachasị bụ ihe dị ka 1.8MPa. Mgbe ahụ tinye oke kwesịrị ekwesị nke hydrochloric acid na oxalic acid na mmiri ọkụ na 90 Celsius iji saa ihe ahụ iji gbasaa olu ya, wee mee ka ọ dị mmiri mmiri na centrifuge, wee mechaa saa ya ugboro ugboro ka ọ bụrụ nke na-anọpụ iche. A na-ejikarị ya eme ihe n'ihe owuwu, ụlọ ọrụ kemịkalụ, agba, ọgwụ, ụlọ ọrụ agha na mpaghara ndị ọzọ, dịka ihe na-emepụta fim, ihe na-ejikọta ihe, ihe na-agbasa ihe, ihe na-eme ka ọ kwụsie ike, ihe na-eme ka ihe sie ike, wdg.

Enwere ike iji hydroxypropyl starch ether mee ihe dị ka ihe mgbakwunye maka ngwaahịa ndị e ji simenti mee, ngwaahịa ndị e ji gypsum mee na ngwaahịa calcium lime. Ọ nwere ezigbo ndakọrịta na ngwakọta ụlọ ndị ọzọ. A na-eji ya na hydroxypropyl methylcellulose ether HPMC, ọ nwere ike ibelata dose nke hydroxypropyl methylcellulose (ịtinye 0.05% nke HPS n'ozuzu ya nwere ike ibelata dose nke HPMC site na ihe dị ka 20%-30%)), ma nwee ike ịrụ ọrụ siri ike, iji kwalite nhazi ime, yana iguzogide mgbawa ka mma na ime ka ọrụ dịkwuo mma.