Ndepụta viscosity nkehydroxypropyl methylcellulosebụ ihe dị oke mkpa. Ọdịdị ahụ anaghị anọchite anya ịdị ọcha. Ọdịdị nke cellulose HPMC dabere na usoro mmepụta. Ebe ojiji dị iche iche kwesịrị ịhọrọ cellulose HPMC nwere ọdịdị dị iche iche, ọ bụghị ka cellulose HPMC dị elu, ka mma! Ihe ziri ezi ziri ezi √
Njikwa Viscosity
1. Hydroxipropyl methylcellulose nke nwere oke viscosity enweghị ike imepụta cellulose dị elu naanị site na iji nitrogen hichaa ma dochie ya. N'ozuzu, enweghị ike ijikwa mmepụta nke cellulose dị elu na China. Agbanyeghị, ọ bụrụ na enwere ike itinye ngwaọrụ nha oxygen n'ime ketulu ahụ, enwere ike ijikwa mmepụta nke viscosity site na aka.
Ojiji nke ndị na-akpakọrịta
2. Na mgbakwunye, ịtụle ọsọ mgbanwe nke nitrogen, ma n'otu oge ahụ, ọ dị mfe imepụta ngwaahịa ndị na-agbawa agbawa n'agbanyeghị otú sistemụ ahụ si ghara ikuku. N'ezie, oke nke polymerization nke owu a nụchara anụcha dịkwa oke mkpa. Ọ bụrụ na nke ahụ anaghị arụ ọrụ, mee ya site na njikọ hydrophobic. E nwere ndị nnọchi anya njikọta n'ime ụlọ n'akụkụ a. Ụdị onye nnọchi anya njikọta a họọrọ nwere nnukwu mmetụta na arụmọrụ nke ngwaahịa ikpeazụ.
Ọdịnaya hydroxypropyl
3. Oxygen fọdụrụ n'ime ihe na-emepụta ihe na-eduga na mmebi nke cellulose na mbelata nke ibu molekul, mana oxygen fọdụrụ nwere oke. Ọ naghị esiri ike ime ka viscosity dị elu ma ọ bụrụhaala na molekul ndị gbawara agbawa ejikọtaghachiri. Agbanyeghị, ọnụego mmiri juputara na-ejikọkwa aka na ọdịnaya hydroxypropyl. Ụfọdụ ụlọ ọrụ mmepụta ihe na-achọ naanị ibelata ọnụ ahịa na ọnụ ahịa, ha anaghịkwa achọ ịbawanye ọdịnaya nke hydroxypropyl, yabụ àgwà ahụ enweghị ike iru ọkwa nke ngwaahịa mba ọzọ yiri ya.
ihe ndị ọzọ
4. Oke nchekwa mmiri nke ngwaahịa a nwere mmekọrịta dị mma na hydroxypropyl, mana maka usoro mmeghachi omume niile, ọ na-ekpebikwa ọnụego nchekwa mmiri ya, mmetụta nke alkalization, oke nke methyl chloride na propylene oxide, na mkpokọta alkali. Oke nke mmiri na owu a nụchara anụcha na-ekpebi arụmọrụ nke ngwaahịa ahụ.
Oge ozi: Ọktoba-19-2022