Polymer nanocomposites epoxy

J. Kim, K. Lee, K. Lee, J. Bae, J. Yang, and S. Hong, Studies on the thermal stabilization enhancement of ABS synergistic effect of triphenyl phosphate nanocomposite, epoxy resin, and silane coupling agent mixtures, Polym. Degrad. Stab., 79(2) 201-207, 2003. 

This chapter reports the results of the literature that concerns the photooxidation of polymer nanocomposites. The published studies concern various polymers (PP, epoxy, ethylene-propylene-diene monomer (EPDM), PS, and so on) and different nanofillers such as organomontmorillonite or layered double hydroxides (LDH) were investigated. It is worthy to note that a specific attention was given to the interactions with various kinds of stabilizers and their efficiency to protect the polymer. One of the main objectives was to understand the influence of the nanofiller on the oxidation mechanism of the polymer and on the ageing of the nanocomposite material. Depending on the types of nanocomposite that were studied, the influence of several parameters such as morphology, processing conditions, and nature of the nanofiller was examined. 

Abstract This chapter describes vegetable oil-based polymer nanocomposites. It deals with the importance, comparison with conventional composites, classification, materials and methods, characterisation, properties and applications of vegetable oil-based polymer nanocomposites. The chapter also includes a short review of polymer nanocomposites of polyester, polyurethanes and epoxies based on different vegetable oils and nanomaterials. The chapter shows that the formation of suitable vegetable oil-based polymer nanocomposite can be considered to be a means of enhancing many of the desirable properties of such polymers or of obtaining materials with an intrinsically new set of properties which will extend their utility in a variety of advanced applications. Vegetable oil-based shape memory hyperbranched polyurethane nanocomposites can be sited as an exampie of such advanced products. 

A large number of vegetable oil-based polymer nanocomposites have been reported in the literature. Among these, vegetable oil-based polyesters, polyurethanes and epoxies are very important and are discussed in the following sub-sections. 

Conductive polymer nanocomposites may also be used in different electrical applications such as the electrodes of batteries or display devices. Linseed oil-based poly(urethane amide)/nanostuctured poly(l-naphthylamine) nanocomposites can be used as antistatic and anticorrosive protective coating materials. Castor oil modified polyurethane/ nanohydroxyapatite nanocomposites have the potential for use in biomedical implants and tissue engineering. Mesua ferrea and sunflower seed oil-based HBPU/silver nanocomposites have been found suitable for use as antibacterial catheters, although more thorough work remains to be done in this field. ° Sunflower oil modified HBPU/silver nanocomposites also have considerable potential as heterogeneous catalysts for the reduction of nitro-compounds to amino compounds. Castor oil-based polyurethane/ epoxy/clay nanocomposites can be used as lubricants to reduce friction and wear. HBPU of castor oil and MWCNT nanocomposites possesses good shape memory properties and therefore could be used in smart materials. ... 

Dynamic mechanical analysis is done by researchers to analyze the viscoelastic properties of polymer nanocomposites [3,73,80]. Omrani et al. studied the influence of nano-alumina on the viscoelastic properties of epoxy in... 

Polymer nanocomposites were processed using non-treated alumina (NT-Al Oj) and aminopropyltriethoxysilane treated alumina (APTES-Al Oj) in epoxy matrix [97-98]. The tensile fracture surface is evaluated for analyzing the strengthening and toughening mechanisms. The tensile fracture surfaces of neat epoxy and nanocomposites containing 10 phr-NT- Al O and 10 phr-APTES- Al O are shown in Figure 9.34. 

Wang, Z. and Pinnavaia, T. J. 1994. Clay-polymer nanocomposites formed from acidic derivatives of montmorillonite and an epoxy resin. Chemistry of Materials 6 468-474. 

Reddy, C. S., Das, C. K., and Narkis, C. M. 2005. Propylene-ethylene copolymer nanocomposites Epoxy resin grafted nanosilica as reinforcing filler. Polymer Composites 26 806-811. 

CdSe-CdS-ZnS core-multishell polymer nanocomposites were prepared by direct dispersion of CdSe-CdS-ZnS core-multishell QDs in an epoxy polymer matrix via a melt mixing technique. Nanocomposites filled with yellow-emitting QDs were more transparent than pure epoxy polymer. A shift in the luminescence of pure epoxy from the blue region to the yellow region was observed in the nanocomposite. Synthesized nanocomposites also showed enhanced tensile properties in comparison to pure epoxy polymer [236]. Several other studied reported the use of a melt blending process for the synthesis of semiconductor-polymer nanocomposites [237-241]. 

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