Download Barrier Properties of Polymer Clay Nanocomposites by Vikas Mittal PDF

By Vikas Mittal

Polymer nanocomposites are organic-inorganic hybrids the place the excessive point ratio inorganic filler should be delaminated within the natural matrix on the nanometer scale, hence resulting in major enhancement of composite houses at very low filler quantity fractions. With the development of polymer nanocomposites expertise, major improvements in mechanical and thermal homes of the composites might be completed. even if, different very important houses like gasoline barrier houses, which shape a completely worthy requirement for using fabrics in packaging and garage functions, have been really missed. by way of enhancing the barrier functionality of the fabrics by way of incorporation of excessive point ratio nano platelets, you possibly can anticipate to minimize the thickness of the industrial packaging laminates and different fabrics the place thick fabric is needed for use to supply barrier to varied gases. this may hence bring about major quantity of discounts within the fabric expenditures and will make the polymer fabrics extra gentle and likewise obvious because the nano scale dispersed filler wouldn't scatter mild. This publication examines the criteria affecting barrier houses enhancement in polar polymer matrices, that are diversified from case whilst non polar polymers are concerned, hence indicating that the functionality should be quantized by means of case-by-case foundation. the widely used traditional versions for prediction of permeation aid also are much less consultant of the real microstructure of the nanocomposites. hence the barrier functionality of the polymer nanocomposite fabrics can also be explored, cut loose the extra bulk dependent mechanical houses.

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Extra resources for Barrier Properties of Polymer Clay Nanocomposites (Nanotechnology Science and Technology)

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Polym. Prep. 1994, 35(1), 393. Burnside S. ; Giannelis, E. P. Chem. Mater. 1995, 7, 1597. ; Finter, J. Adv. Mater. 1999, 11, 49. Compatibilization of Interfaces in Nanocomposites [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] 37 Chen, T. ; Tien, Y. ; Wie, K. H. Polymer 2000, 41, 1345. ; Qi, Z. J. Appl. Polym. Sci. 2001, 82, 1444. Yao, K. ; Hourston, D. ; Luo, D.

However, when the modification was replaced with the one containing two methacrylate units, both systems were exfoliated. Thermal stability of all the systems was reported to be enhanced by the nanocomposite generation along with an increase in Young’s modulus for all nanocomposites. Figure 1. Schematic of grafting ‘to’ the surface approach. Styrene is the external monomer and the clay is modified with vinyl group containing modification. 26 Vikas Mittal Figure 2. Schematic representation of grafting ‘to’ the surface approach by using gamma irradiation [56].

M. Adv. Mater. 2002, 14, 128. [91] Wang, Z. ; Chung, T. C. Macromolecules 2003, 36, 8919. [92] Bergman, J. ; Giannelis, E. ; Thomas, M. ; Coates, G. W. Chem. Commun. 1999, 21, 2179. ; Garces, J. ; Jerome, R. Polymer 2002, 43, 2123. [94] Rupp, J. E. P. PhD Thesis, ETH Zurich, Switzerland, 2004. ; Mulhaupt, R. Macromol. Rapid Commun. 1999, 20, 423. ; Wang, D. Macromol. Rapid Commun. 2001, 22, 1422. ; Sheng, M. J. Appl. Polym. Sci. 2001, 82, 1829. ; Sheng, M. Macromol. Rapid Commun. 2001, 22, 329.

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