TEMIR NANOZARRACHALARI BILAN TO‘LDIRILGAN PA-6 ASOSIDAGI NANOKOMPOZITLARNI OLISHDA Fe(CH₃COO)₂ PREKURSORIDAN FOYDALANISHNING ILMIY-TEXNOLOGIK ASOSLARI
Kalit so‘zlar:
PA-6, temir(II) asetat, Fe(CH₃COO)₂, prekursor, nanokompozit, XRF, IQ spektroskopiya, UB tahlil, reflektans, Fe₂O₃-ekvivalent.Annotasiya
Maqolada PA-6 matritsasida poliamid asosidagi temir nanozarrachalari bilan to‘ldirilgan nanokompozit material olish uchun temir(II) asetat – Fe(CH₃COO)₂ prekursoridan foydalanishning ilmiy va texnologik asoslari tahlil qilindi. Fe(CH₃COO)₂ va temir(II) oleatning stexiometrik ko‘rsatkichlari taqqoslanganda, anhidrid Fe(CH₃COO)₂ tarkibidagi nazariy Fe ulushi 32,11 mass.% ni, Fe(oleate)₂ da esa 9,03 mass.% ni tashkil etishi aniqlandi; demak, bir xil miqdordagi temirni kiritish uchun oleat prekursorining massasi taxminan 3,56 marta ko‘p bo‘lishi kerak. Fe(CH₃COO)₂ ning 190–200 °C oralig‘ida parchalanishi haqidagi adabiy ma’lumotlar uning PA-6 eritmasida 225–240 °C da olib boriladigan jarayon bilan termik jihatdan mosligini ko‘rsatadi, biroq ushbu haroratda hosil bo‘ladigan aniq kristall fazani faqat XRD/TEM bilan tasdiqlash mumkinligi qayd etildi. Tajriba namunalarida XRF bo‘yicha Fe₂O₃-ekvivalent miqdori 0,0398–53,1 mass.% oralig‘ida bo‘ldi. PA-55 namunasida 8,15 mass.% Fe₂O₃-ekvivalent va 91,062 mass.% hisobiy PA-6 ulushi qayd etildi; IK tahlilda Amide I sohasi saqlangan, UB tahlilda esa reflektans pasayishi kuzatildi. O‘rganilgan namunalar bo‘yicha reflektans minimumi va Fe₂O₃-ekvivalent o‘rtasida Spearman ρ = −0,685 (p = 0,029) bo‘lib, statistik jihatdan ahamiyatli monoton teskari bog‘lanish aniqlandi. Natijalar asosida XRF → IK → UB ketma-ketligidagi uch bosqichli sifat nazorati yondashuvi taklif etildi.
Manbalar
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