E. Titus, N. Ali, G. Cabral, J. Gracio, University of Aveiro, Aveiro, Portugal; R. Babu P, Materilas Ireland Polymer Research Center, Dublin, Ireland; W. J. Blau, Materilas Ireland Polymer Research Center, Dublin, Ireland; M. J. Jackson, Purdue University, West Lafayette, IN; D. S. Misra, Indian Institute of Technology, Mumbai, India