The formulation of cost-effectiveness sustainable materials is extensively growing and becoming an attractive approach for both industrial and academic fields. In this context, the bio-based aliphatic polyamide 11 (PA11) has acquired significant interest as environmentally friendly thermoplastic option. In addition, its formulation with selected natural antioxidant and/or reinforced compounds through green processing methods, might improve physical and mechanical properties without sacrificing the intrinsic bio-based nature of the matrix. In this work, we have investigated and compared the photo-oxidative degradation processes occurring on PA11 composites based on thymol and halloysite nanotubes prepared by using ball-milling method. In particular, halloysite nanotubes were used as green nano-container of a natural antioxidant molecule, and reinforced nano-filler as well. Molecular and structural information of photo-exposed samples were obtained by using size exclusion chromatography (SEC) and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Thermal and mechanical properties were also tested as well as thymol release. Data collected confirmed that PA11 filled with HNTs-Thymol nano-hybrid showed superior durability performance if compared to both pure PA11 and PA11 blend realized by simply adding thymol and HNTs to polymer matrix. Furthermore, we found that HNTs and thymol combined in the nano-hydrid form exhibited an active and synergic role to achieve a major photo stabilization of PA11 biocomposite, without sacrificing its mechanical properties.

具有成本效益的可持续材料的配方正在迅速增长，并已成为工业和学术领域的一种有吸引力的方法。在这种情况下，生物基脂族聚酰胺11（PA11）作为环保型热塑性材料已引起广泛关注。此外，通过绿色加工方法将其与选定的天然抗氧化剂和/或增强化合物配制成制剂，可以改善物理和机械性能，而不会牺牲基质的固有生物基性质。在这项工作中，我们研究并比较了通过球磨法制备的基于百里香酚和埃洛石纳米管的PA11复合材料发生的光氧化降解过程。特别是，埃洛石纳米管被用作天然抗氧化剂分子的绿色纳米容器，以及增强的纳米填料。通过使用尺寸排阻色谱（SEC）和基质辅助激光解吸电离飞行时间质谱（MALDI-TOF MS）获得曝光后样品的分子和结构信息。还测试了热和机械性能以及百里酚的释放。收集的数据证实，与仅通过在聚合物基质中添加百里酚和HNT的纯PA11和PA11共混物相比，填充有HNTs-百里香酚纳米杂化物的PA11表现出优异的耐久性能。此外，我们发现，以纳米氢化物形式结合的HNT和百里香酚在不牺牲其机械性能的情况下，发挥了积极的协同作用，实现了PA11生物复合材料的主要光稳定作用。通过使用尺寸排阻色谱（SEC）和基质辅助激光解吸电离飞行时间质谱（MALDI-TOF MS）获得曝光后样品的分子和结构信息。还测试了热和机械性能以及百里酚的释放。收集的数据证实，与仅通过将百里酚和HNTs添加到聚合物基质中实现的纯PA11和PA11共混物相比，填充有HNTs-百里香酚纳米杂化物的PA11表现出优异的耐久性能。此外，我们发现，以纳米氢化物形式结合的HNT和百里香酚在不牺牲其机械性能的情况下，表现出对PA11生物复合材料具有重要的光稳定作用的活性和协同作用。通过使用尺寸排阻色谱（SEC）和基质辅助激光解吸电离飞行时间质谱（MALDI-TOF MS）获得曝光后样品的分子和结构信息。还测试了热和机械性能以及百里酚的释放。收集的数据证实，与仅通过在聚合物基质中添加百里酚和HNT的纯PA11和PA11共混物相比，填充有HNTs-百里香酚纳米杂化物的PA11表现出优异的耐久性能。此外，我们发现，以纳米氢化物形式结合的HNT和百里香酚在不牺牲其机械性能的情况下，表现出对PA11生物复合材料具有重要的光稳定作用的活性和协同作用。