Abstract The crystallization ability of polylactide (PLA) was improved by the addition of a hydrazide compound, octamethylenedicarboxylic di(2-hydroxybenzohydrazide) (OMBH). The nucleation efficiency of OMBH significantly depended on its solubility during annealing treatment. The solubility of OMBH increased gradually with increasing the final annealing temperature (Tf) and/or decreasing the addition concentration of OMBH (COMBH). At a certain COMBH (e.g. 0.5 wt%), the crystallization of OMBH shifted to a lower temperature with increasing Tf due to the increased OMBH solubility. This decreased the crystallization temperature, crystallization enthalpy, and isothermal crystallization rate of PLA. Additionally, at a certain Tf (e.g. 200 °C), the crystallization temperature and nucleation efficiency of OMBH increased with its concentration, resulting in the increase of crystallization temperature, crystallization enthalpy, and isothermal crystallization rate of PLA.

中文翻译：

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八亚甲基二甲酸二（2-羟基苯甲酰肼）成核聚丙交酯的结晶行为：溶解度影响

摘要 通过加入酰肼化合物八亚甲基二甲酰二(2-羟基苯甲酰肼) (OMBH) 提高了聚丙交酯 (PLA) 的结晶能力。OMBH 的成核效率显着取决于其在退火处理过程中的溶解度。OMBH 的溶解度随着最终退火温度 (Tf) 的增加和/或 OMBH (COMBH) 添加浓度的降低而逐渐增加。在特定的 COMBH（例如 0.5 wt%）下，由于 OMBH 溶解度的增加，OMBH 的结晶随着 Tf 的增加而转移到较低的温度。这降低了PLA的结晶温度、结晶焓和等温结晶速率。此外，在一定的 Tf（例如 200 °C）下，OMBH 的结晶温度和成核效率随着其浓度的增加而增加，