Hydroxypropyl methylcellulose (HPMC)Ihe nkiri ahụ nwere arụmọrụ dị mma, mana n'ihi na HPMC bụ jel okpomọkụ, viscosity na obere okpomọkụ dị oke ala, nke na-adịghị mma maka mkpuchi (ma ọ bụ itinye) na ịkpọ nkụ na obere okpomọkụ iji kwadebe ihe nkiri a na-eri, na-ebute arụmọrụ nhazi adịghị mma; na mgbakwunye, ọnụ ahịa ya dị elu na-egbochi ojiji ya. Hydroxypropyl starch (HPS) bụ jel oyi dị ọnụ ala, mgbakwunye ya nwere ike ịbawanye viscosity nke HPMC na obere okpomọkụ, melite arụmọrụ nhazi nke HPMC, ma belata ọnụ ahịa mmepụta, na mgbakwunye, otu hydrophilicity, glucose units na hydroxypropyl otu niile na-enye aka imeziwanye ndakọrịta nke polymers abụọ a. Ya mere, e kwadebere sistemụ ngwakọta jel ọkụ-oyi site na ịgwakọta HPS na HPMC, a mụkwara mmetụta nke okpomọkụ na nhazi jel nke sistemụ ngwakọta jel ọkụ-oyi HPMC/HPS site na iji usoro rheometer na obere akụkụ X-ray gbasaa. , yana mmetụta nke ọnọdụ ọgwụgwọ okpomọkụ na obere nhazi na ihe onwunwe nke sistemụ akpụkpọ ahụ, wee wulite mmekọrịta dị n'etiti usoro jel nke ihe onwunwe usoro ngwakọta-membrane-membrane n'okpuru ọnọdụ ọgwụgwọ okpomọkụ.
Nsonaazụ gosiri na n'oge okpomọkụ dị elu, gel nwere oke okpomọkụ.HPMCỌdịnaya nwere modulus dị elu ma dịkwa oke mkpa dịka àgwà siri ike, nhazi yiri onwe ya nke ndị na-agbasa gel na-adị oke arọ, nha nke ndị na-agwakọta gel na-ebukwa ibu; na obere okpomọkụ, ọdịnaya HPS Ihe nlele gel dị elu nwere modulus dị elu, omume siri ike a ma ama, na nhazi yiri onwe ya nke ndị na-ekesa gel. Maka ihe nlele nwere otu nha ngwakọta ahụ, mkpa modulus na omume siri ike na njupụta nhazi yiri onwe ya nke gels nke HPMC na-achịkwa na oke okpomọkụ dị elu karịa ndị HPS na-achịkwa na obere okpomọkụ. Okpomọkụ nkụ nwere ike imetụta nhazi gel nke sistemụ ahụ tupu akpọọ nkụ, wee metụta nhazi kristal na nhazi amorphous nke ihe nkiri ahụ, ma mechaa nwee mmetụta dị mkpa na ihe onwunwe igwe nke ihe nkiri ahụ, na-eme ka ike nrụgide na modulus nke ihe nkiri ahụ kpọọ nkụ na oke okpomọkụ. Dị elu karịa akọrọ na obere okpomọkụ. Ọnụego oyi enweghị mmetụta doro anya na nhazi kristal nke sistemụ ahụ, mana ọ nwere mmetụta na njupụta nke ahụ microdomain yiri onwe ya nke ihe nkiri ahụ. N'ime sistemụ a, njupụta nke nhazi ihe nkiri ahụ yiri onwe ya nwere ike imetụta ihe eji arụ ọrụ nke ihe nkiri ahụ. Arụmọrụ nwere nnukwu mmetụta.
Dabere na nkwadebe nke akpụkpọ ahụ agwakọtara, nnyocha ahụ chọpụtara na ojiji nke ngwọta iodine iji mee ka akpụkpọ ahụ agwakọtara HPMC/HPS tee agba nke ọma guzobere ụzọ ọhụrụ maka ileba anya nke ọma na mgbanwe usoro nke usoro agwakọtara n'okpuru microscope. usoro, nke nwere nduzi usoro maka ọmụmụ nke nkesa usoro nke usoro ngwakọta dabere na starch. Site na iji usoro nyocha ọhụrụ a, yana infrared spectroscopy, scanning electron microscopy na extensometer, e nyochachara ma mụọ mgbanwe usoro, ndakọrịta na ihe onwunwe mechanical nke sistemụ ahụ, e wuru mmekọrịta dị n'etiti arụmọrụ. Nsonaazụ nlele microscope na-egosi na sistemụ ahụ na-agafe mgbanwe usoro mgbe oke HPS bụ 50%, ihe omume ngwakọta interphase dị na fim ahụ, na-egosi na sistemụ ahụ nwere oke ndakọrịta ụfọdụ; nyocha infrared, thermogravimetric na nsonaazụ SEM na-akwadokwa ngwakọta ahụ. Sistemụ ahụ nwere oke ndakọrịta ụfọdụ. Modulus nke ihe nkiri agwakọtara na-agbanwe mgbe ọdịnaya HPS bụ 50%. MgbeHPSỌdịnaya karịrị 50%, akụkụ kọntaktị nke ihe nlele agwakọtara na-apụ n'ahịrị kwụ ọtọ nke na-ejikọ akụkụ kọntaktị nke ihe nlele dị ọcha, mgbe ọ na-erughị 50%, ọ na-apụ n'ahịrị kwụ ọtọ a na-adịghị mma., nke bụ isi ihe kpatara ya bụ mgbanwe nkebi.
Oge ozi: Eprel-25-2024