The effects of water and microstructure on the performance of polymer electrolyte fuel cells A.A. Shah a,∗, G.-S. Kim b, W. Gervais b, A. Young b, K. Promislow c, J. Li b, S. Ye b a Department of Mathematics, Simon Fraser University, 8888 University Drive, BC, Canada V5A 1S6 b Ballard Power Systems, 4343 North Fraser Way, Burnaby BC, Canada V5J 5J9 c Department of Mathematics, Michigan State Un...

Solution doping of microstructured polymer optical fibres [mPOF] is demonstrated, a technique which allows dopants to be introduced after polymerisation through the microstructure. Controlled diffusion is used to disperse the dopant uniformly across the fibre core, and the final concentration can be systematically varied by appropriate choice of conditions. We use this technique to produce a fi...

M. Stańczyk, T. Figlus, The Silesian University of Technology, Faculty of Transport Katowice, Poland In the work the influence results of two different hardening coolant agents on the basic mechanical proprieties and microstructure of the round hot rolled bars were presented. The bars of 42CrMo4 steel were exposed to analysis, and for those bars in the hardening process, water and modern pro-ec...

Aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. By adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. In this work, Polyalkylene Glycol (PAG) aqueous solution was used as th...

Polyhydroxybutyrate (PHB) is a sustainable polymer that promising candidate for replacing petroleum-based plastics in food packaging. Fillers are used to improve the mechanical properties of PHB composites, simultaneously changing crystallinity matrix. However, it not well understood how fillers affect crystallisation and microstructure, thus resulting composite. This review summarises simulati...

A data bank approach to multi-scale modelling of polymer solidification under flow and holding conditions is presented with applications to injection molding. The latent heat of solidification, which acts as an input parameter for large scale simulations, is determined as a function of different process dependent parameters such as the flow speed, supersaturation and geometric properties includ...

Title of Document: PROCESSING-STRUCTUREMICROSTRUCTUREPROPERTY RELATIONSHIPS IN POLYMER NANOCOMPOSITES Arun Kumar Kota, Doctor of Philosophy, 2007 Directed By: Professor Hugh A. Bruck, Department of Mechanical Engineering The optimal development of polymer nanocomposites using carbon nanotube (CNTs) and carbon nanofiber (CNFs) fillers requires a complete understanding of processingstructure-prop...

INTRODUCTION The next generation of sophisticated nanomachines is being designed with integrated mechanical, optical, chemical gating, and biological devices to perform complex sensing functions. Such systems require “adaptive surfaces”, or surfaces that have the ability to respond to external stimulus and have their surface properties tuned for necessary functionality. Polymer brushes are pros...