Poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) is a polymer obtained by bacterial fermentation that emerges as an alternative to polymers of petrochemical origin. The complex crystallization kinetics that occurs over 15 days after melting, known as ageing, limits its industrial application. During the aging process, there is a change of the degree of crystallinity, which has an effect on the chemical structure of the material. Additionally, changes in the mechanical properties, colorimetry, and dimensional shrinkage are observed. Different material properties are observed depending on the cooling conditions employed. For the ageing process, two different conditions are considered: ageing at room temperature and annealing at high temperature (60 °C).

中文翻译：

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通过修改注塑和老化过程中的冷却条件来调整商业级 P(3HB-co-3HHX) 最终性能

聚(3-羟基丁酸酯‐合作‐3-羟基己酸酯）是一种通过细菌发酵获得的聚合物，是石化来源聚合物的替代品。熔化后 15 天以上发生的复杂结晶动力学（称为老化）限制了其工业应用。在老化过程中，结晶度发生变化，这对材料的化学结构产生影响。此外，还观察到机械性能、比色法和尺寸收缩率的变化。根据所采用的冷却条件，观察到不同的材料特性。对于时效过程，考虑两种不同的条件：室温时效和高温（60℃）退火。