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Classical forensic polymer engineering concerns a study of failure in polymer products. This area of science comprises fracture of plastic products, or any other reason why such a product fails in service, or fails to meet its specification.1 So far, most of the reported case studies concern ex-post investigations of traditional polymeric materials such as PE, PP, PS, PVC, ABS or their thermoplastic composites. Little is known about forensic engineering of novel and advanced polymeric materials. Thus, there is a real gap in this area of knowledge. Furthermore, the ex-ante studies are needed to define and minimise the potential failure of novel polymer products before specific applications. Environmental stress cracking (ESC) is one of the most common causes of unexpected brittle failure of thermoplastic (especially amorphous) polymers. The rate of ESC is dependent on many factors, including, for example, the polymer’s chemical composition, bonding, crystallinity, surface roughness, molar mass and residual stress. It also depends on the chemical nature of liquid media and the temperature of the system. Thus, evaluation and understanding of the structure, properties and behaviour of advanced polymer materials for perspective practical applications is needed, especially in the field of compostable polymer packages of long-life products, such as cosmetics or household chemicals. Because of the slow environmental degradation of traditional packaging, the use of conventional plastics is accompanied by significant ecological problems. To reduce plastic waste from the packaging industry, biodegradable polymers have become interesting alternatives, for packages with a long shelf life.2 The most important environmentally friendly plastics are generally based on aliphatic polyesters, such as poly(lactic acid), poly(3-hyForensic Engineering of Advanced Polymeric Materials. Part 1 – Degradation Studies of Polylactide Blends with Atactic Poly[(R,S)-3-hydroxybutyrate] in Paraffin

chemical and biochemical engineering quarterly/chemical and biochemical engineering quarterly

Forensic Engineering of Advanced Polymeric Materials. Part 1 – Degradation Studies of Polylactide Blends with Atactic Poly[(R,S)-3-hydroxybutyrate] in Paraffin