ABSTRACT
Berzelius was the first scientist who synthesized polyesters of polybasic acids and polyvalent alcohols by reacting tartaric acid and glycerol in 1847. Polyester is a class of synthetic polymers built up from multiple chemical repeating units linked together by ester groups. Single-polymer composites from polyester have been manufactured from different starting materials like fiber and different forms of yarn and fabric. Fibers were the starting material for a process by J. Rasburn explaining the successful compaction of polyethylene terephthalate (PET) fibers. In a work by Zhang et al. all-PET composites used the method of film stacking of oriented PET tapes. All-PET composites were manufactured using a film-stacking technique. This technique includes a heating process to enable diffusion between reinforcement and matrix. Self-reinforced PET (srPET) composites composed of double-covered uncommingled yarn that was prepared through co-wrap spinning were hot pressed using a film-stacking technique. The stress–strain curves for srPET laminae signify substantial yielding and post-yield strain hardening.
