Poly(ethylene naphthalate)/clay nanocomposites based on thermally stable trialkylimidazolium-treated montmorillonite: thermal and dynamic mechanical properties.
Thermally stable organically modified clays based on 1,3-didecyl-2-methylimidazolium (IM2C10) and 1-hexadecyl-2,3-dimethyl-imidazolium (IMC16) were used to prepare poly(ethylene naphthalate) (PEN)/montmorillonite (MMT) nanocomposites via a melt intercalation process. Examination by X-ray diffraction and transmission electron microscopy indicates that an intercalated nanocomposite was formed with IMC16-MMT, while unmodified MMT (Na-MMT) and IM2C10-MMT are generally incompatible with PEN. Thermogravimetric analysis reveals that the peak derivative weight loss temperature of the intercalated PEN/IMC16-MMT was more than 10 "C higher compared to neat PEN, PEN/Na-MMT, or PEN/IM2C10-MMT. Dynamic mechanical analysis also showed that a more significant improvement of the storage modulus was achieved in the better dispersed PEN/IMC16-MMT. The effect of annealing on the dynamic storage modulus of the hybrids is also investigated.
Chua
Yang Choo
YC
School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798.
Wu
Shucheng
S
Lu
Xuehong
X
D000538:Aluminum Silicates / Q000737:chemistry*; D001546:Bentonite / Q000737:chemistry*; D000077215:Clay; D003460:Crystallization / Q000379:methods*; D004548:Elasticity; D006244:Hardness; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011095:Polyethylenes / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength
D000538:Aluminum Silicates; D046911:Macromolecular Substances; D011095:Polyethylenes; D001546:Bentonite; D000077215:Clay