Dynamic mechanical thermal analysis nanocomposite

Thermal properties Thermal properties are the properties of materials that change with temperature. They are studied by thermal analysis techniques, which include DSC, thermogravimetric analysis (TGA), differential thermal analysis (DTA), thermomechanical analysis (TMA), dynamic mechanical analysis (DMA)/dynamic mechanical thermal analysis (DMTA), dielectric thermal analysis, etc. As is well known, TGA/DTA and DSC are the two most widely used methods to determine the thermal properties of polymer nanocomposites. TGA can demonstrate the thermal stability, the onset of degradation, and the percentage of silica incorporated in the polymer matrix. DSC can be... 

Modifications in order to improve starch matrix-starch nanoparticles nanocomposites were also proposed. For example, Ma et al. (2008c), proposed the fabrication and characterization of citric acid-modified starch nanoparticles/plasti-cized pea starch composites. In dynamic mechanical thermal analysis, the introduction of CA-S-NP could improve the storage modulus and the glass transition temperature of pea starch/CA-S-NP composites. The tensile yield strength and Young s modulus increased Irom 3.94 to 8.12 MPa and from 49.8 to 125.1 MPa, respectively, when the CA-S-NP contents varied fiom 0 to 4 wt%. 

Martinez-Hemandez AL, Velasco-Santos C (2012) Keratin fibers from chicken feathers structure and advances in polymer composites. Nova Publishers, New York, pp 149-211 Martinez-Hemandez AL, Velasco-Santos C, de-Icaza M, Castano VM (2007) D5mamical-mechanical and thermal analysis of polymeric composites reinforced with keratin biofibers from chicken feathers. Compos Part B Eng 38 405 10 Mathew AP, Dufresne A (2002) Morphological investigation of nanocomposites from sorbitol plasticized starch and tunicin whiskers. Biomacromolecules 3 609-617 Md. Islama S, Hamdana S, Talibb ZA, Ahmeda AS, Md. Rahmana R (2012) Tropical wood polymer nanocomposite (WPNC) The impact of nanoclay on dynamic mechanical thermal properties. Compos Sci Technol 72 1995-2001... 

Velasco-Santos C, Marty nez-Hema ndez AL, Fisher FT, Ruotf R, Castanlo VM (2003a). Dynamical mechanical and thermal analysis of carbon nanotube-methyl methacrylate nanocomposites. J. Phys. D-Applied Phys. 36 1423-1428. 

Giraldo et al. (38) reported polyamide 6 nanocomposites in which the crystallization temperature of the polymer was observed to increase with the addition of 2 wt% CNTs. The temperature was 185°C for the pure polyamide which subsequently increased to 190 °C. The authors suggested that the nanotubes might serve as the nucleation sites for the polymer crystals to grow which was also confirmed by the reduction of the chain mobility by dynamic mechanical analysis. The thermal stability of the composites was reported to enhance after the incorporation of nanotubes. 

Hazarika A, Maji TK (2014c) Strain sensing behavior and dynamic mechanical properties of carbon nanotubes/nanoclay reinforced wood polymCT nanocomposite. Chem Eng J 247 33-41 Hazarika A, Maji TK (2014d) Thermal decomposition kinetics, flammability, and mechanical property smdy of wood polymtar nanocomposite. J Therm Anal Calorim 115 1679-1691 Hazarika A, Mandal M, Maji TK (2014) Dynamic mechanical analysis, biodegradability and thermal stability of wood polymer nanocomposites. Compos Part B 60 568-576 Hetzer M, Kee D (2008) Wootl/polymer/nanoclay composites, environmentally friendly sustainable technology a review. Chem Eng Res Des 86 1083-1093 Hill CAS, Abdirl KHPS, Hale MD (1998) A study of the potential of acetylation to improve the properties of plant fibres, frrd Crops Prod 8 53-63 Hoffmann MR, Martin ST, Choi WY, Bahnemann W (1995) Environmental application of semiconductm photocatalysis. Chem Rev 95 69-96 Huda MS, Drzal LT, Misra M, Mohanty AK (2(K)6) Wood-fiber-reinforced poly(lactic acid) composites evaluation of the physicomechanical and morphological properties. J AppI Polym Sci 102 4856-4869... 

The main objective of this study was to evaluate chemical, thermal and dynamic mechanical properties of the resulted nanocomposite from kenaf and cellulose acetate butyrate (CAB). Whiskers-matrix compatibility was evaluated by all of the characterizations to see the interaction between whiskers and matrix. Based on the findings, FTIR analysis showed no intermolecular hydrogen bonding between CAB and whiskers. Thermal analysis foxmd that whiskers reinforcement did not affect the decomposition temperature of resulted nanocomposite. However, good miscibility was detected... 

Nanoparticles, compared with traditional fillers, provide more reinforcement due to the higher interfacial area. Introduction of these particles into the mbber matrix improves many of its properties, in particular tensile strength, thermal stability, elasticity, processability or barrier improvement. The final properties of nanocomposites are determined by the filler-filler and polymer-filler interactions. Therefore, it is very important to have knowledge of the characteristics of nonlinear viscoelastic behavior for mbber reinforced systems, especially an analysis of the low strain dynamic mechanical properties (Payne effect). 

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