화학공학소재연구정보센터
Journal of Applied Polymer Science, Vol.127, No.6, 4644-4652, 2013
Mechanical modeling of a three-phase nanocomposite polymeric material
The presented model to predict the elastic modulus of a polymer/ellipsoidal filler/oblate platelet system is based on Eshelby's equivalent inclusion method and Mori-Tanaka's back-stress analysis. We considered wood flour and intercalated clay particles in three-phase polymer nanocomposites as ellipsoidal and oblate platelet shapes, respectively. The intercalated clay particles along with the polymer chains in the clay galleries are treated as equivalent oblate fillers (EOFs). Via controlling wood flour and EOF aspect ratios (a and beta) and the silicate layer number (n) in an EOF, the model prediction was compared with experimental data. The model predicted a and beta values are within a range of 2.45 and 4475, respectively, which are in good agreement with experimental observations. Quantitative agreement between model prediction and experimental data is achieved for a = 3.7 and beta = 75 when n = 2. The proposed model recovers the two-phase results for polymer/ellipsoidal filler systems or polymer/oblate platelet systems. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013