ABSTRACT
Sample preparation forms an integral and important part of any experimental research work and is probably not fully appreciated in terms of its significance, Any analysis and interpretation of experimental results must ensure that the samples tested did not themselves contribute any variation, Unless one can be fully sure that the samples tested were prepared with consistent pretest or preconditioning properties, no meaningful interpretation of their tests can be made. Careful and consistent sample preparation for polymers and their composites is important because both physical and mechanical properties of almost all polymers and their composites vary significantly depending on the ways they are prepared. Different heating/cooling profiles, applied pressure, and even different types of atmosphere during preparation will result in significant differences in the sample properties. Care should also be taken to ensure that the variations of physical properties within the same sample should be minimized if not eliminated. Specifications and techniques for proper sample preparation are generally well covered for most polymers.
