High-density polyethylene (HDPE)–clay nanocomposites have been prepared using the melt intercalation technique. Organically modified montmorillonite at various loadings (0.5–7%) was used as a nanoadditive. Fourier transform infrared spectroscopy (FT-IR) was utilized for the first time to monitor the stress-induced crystal-to-crystal transformations of the polyethylene matrix with respect to the clay loading as well as to the degree of mechanical strain. In addition, polarized infrared measurements revealed information on both the orientation and the stress-induced distortion of the crystals. It was concluded that the crystal-to-crystal transformations are hindered by the presence of the clay, which also prevented the crystals from orienting even at low clay loadings (1%). Finally, X-ray diffraction (XRD) and differential scanning calorimetry (DSC) measurements confirmed the presence of the stress-induced crystalline structures in agreement with the infrared measurements.
KojimaY.UsukiA.KawasumiM.OkadaA.FukushimaY.KurauchiT. T. and KamigaitoO. J, Mater. Res.8, 1179 (1993); KojimaY.UsukiA.KawasumiM.OkadaA.KurauchiT. T. and KamigaitoO. J, Polym. Sci. Part A: Polym. Chem.31, 983 (1993).
2.
VaiaR. A.IshiiH. and GiannelisE. P, Chem. Mater.5, 1694 (1993).
3.
Sinha RayS. and OkamotoM, Prog. Polym. Sci.28, 1539 (2003).
4.
AlexandreM. and DuboisP, Mater. Sci. Eng.28, 1 (2000).
5.
KorakianitiA.PapaefthimiouV.DaflouT.KennouS. and GregoriouV. G, Macromol. Symp.205, 71 (2004).
6.
VaiaR. A.VasudevanS.KrawiecW.ScanlonL. G. and GiannelisE. P, Adv. Mater.7, 154 (1995).
7.
GalgaliG.RameshC. and LeleA, Macromolecules34, 852 (2001).
GregoriouV. G.NodaI.DowreyA. E.MarcottC.ChaoJ. L. and PalmerR. A, J. Polym. Sci.: Polym. Phys. Ed.31, 1769 (1993).
24.
HagermanH.SnyderR. G.PeacockA. J. and MandelkernL, Macromolecules22, 3600 (1989).
25.
AkovaliG. and AtalayA, Polym. Testing16, 165 (1997).
26.
PainterP. C.ColemanM. M. and KoenigJ. L, in The Theory of Vibrational Spectroscopy and its Application to Polymeric Materials (John Wiley and Sons, New York, 1982), pp. 358, 295.
27.
PainterP. C.RuntJ.ColemanM. M. and HarrisonI. R, J. Polym. Sci.15, 1647 (1977).
28.
YoshidaH.IchimuraY.KinoshitaR. and TeramotoY, Thermochim. Acta282/283, 443 (1996).
29.
SieslerH. W., Makromol. Chem.190, 2653 (1989).
30.
SnyderR. G., J. Mol. Spectrosc.7, 116 (1961).
31.
SnyderR. G., J. Chem. Phys.47, 1316 (1967).
32.
PainterP. C.HavensJ.HartW. W. and KoenigJ. L, J. Polym. Sci.: Polym. Phys. Ed.15, 1223 (1977).
33.
SieslerH. W. and Holland-MoritzK, in Infrared and Raman Spectroscopy of Polymers (Marcel Dekker, New York, Basel, 1980), p. 281.
34.
SatohH.KurokiS. and AndoI, J. Appl. Polym. Sci.82, 2268 (2001).
35.
BassettD. C.BlockS. and PiermmariniG. J, J. Appl. Phys.45, 4146 (1974).
36.
DesperR. C., J. Appl. Polym. Sci.13, 169 (1969).
37.
YangF.ZhangX.ZhaoH.ChenB.HuangB. and FengZ, J. Appl. Polym. Sci.89, 3680 (2003).
38.
GatosK. G.KandiliotiG.GaliotisC. and GregoriouV. G, Polymer45, 4453 (2004).
39.
BakerA. M. E. and WindleA. H, Polymer42, 667 (2001).
40.
NagaN., J. Polym. Sci.: Polym. Phys. Ed.42, 1457 (2004).
41.
BoontongkongY.CohenR. E.SpectorM. and BellareA, Polymer39, 6391 (1998).
42.
LeeS. and SimhaR, Macromolecules7, 909 (1974).
43.
MenczelJ. D.JaffeM. and BesseyW. E, “Films”, in Thermal Characterization of Polymeric Materials, TuriE. A. Ed. (Academic Press, San Diego, 1997), Vol. 2, 2nd ed., pp. 1996–2004.
44.
AshcraftC. R. and BoydR. H, J. Polym. Sci.: Polym. Phys. Ed.14, 2153 (1976).
45.
BoydR. H., Polymer26, 323 (1985).
46.
JarrettW. L. and MathiasL. J, Macromolecules23, 5164 (1990).
47.
WrightK. J. and LesserA. J, Macromolecules34, 3626 (2001).
