Nội dung bài viết cho thấy sự xen kẽ của methyl cam phân tử giữa các lớp silicat. Phân tích Thermogravimetric cho thấy hàm lượng hữu cơ trong đất sét KIODC là 25,3%. SEM quan sát chứng minh rằng trong đất sét KIODC các tiểu cầu silicat được tách ra tốt hơn sau đó trong đất sét nguyên sơ. Kết quả phân tích XRD chỉ ra rằng lớp phủ epoxy chứa 2% đất sét KIODC là intercalated nanocomposite. | Tap chi Hoa hgc, T. 47 (3), Tr. 287 - 291, 2009 BIEN TINH Hijru CO CLAY MONTMORILONIT K10 BANG HOP CHAT AZO CO CHLTA NHOM SUNFONIC AXIT DenTda sogn 29-8-2008 tJiV TO THI X U A N H A N G , T R I N H ANH TRUC, PHAM GIA VU Vien Ky thugt nhiet ddi, Vien Khoa hgc vd Cong nghe Viet Nam ABSTRACT Clay montmorillonite KIO was organically modified by cation exchange reaction with methyl orange. The clay modified hy methyl orange (KIODC) was characterized by infrared spectroscopy. X-ray diffraction, thermogravimetric analysis and scanning electronic microscopy. The epoxy coatings containing 2% clay KIODC was prepared and the dispersion degree of clay in coating was evaluated. Structure analysis by infiared spectroscopy indicated that vibration bands at 1601 cm'' and 1389 cm'' characteristic of C-H bond in aromatic ring and C-N bond of methyl orange were also found in the spectra of clay KIODC. XRD analyze showed that the dgoi spacing of clay-KlODC was A. These results indicate the intercalation of methyl orange molecules between silicate layers. Thermogravimetric analyze showed that the organic content in clay KIODC was 25,3 %. SEM observation demonstrated that in clay KIODC the silicate platelets are better separated then in pristine clay. XRD analyze results indicated that epoxy coating containing 2 % clay KIODC was intercalated nanocomposite. I-MODAU Trong nhtrng nam g i n day vat lieu polyme clay nanocompozit thu hiit dugc su quan tam rat ldn ciia cae co sd nghien citu cung nhu san xuat. Chi vdi lugng rat nhd clay hiiu ca (3 - 5%) da lam tang ding k i cie tinh nang ciia vat lieu nhu do bin keo, kha nang chiu nhiet chd'ng chay, kha nang che chin, bao ve chd'ng an mdn [ 1 - 8 ] . Clay hitu co thudng dugc che tao tii clay montmorillonite la loai cd kha nang trao ddi ion cao bang phin ilng trao ddi ion vdi c i e loai cation ankylamonium. Trong c i e cdng trinh trudc day chiing tdi da nghien ciiu bien tfnh hiiu ca clay bang lie che an mdn la mdt amin cd chifa eac .
