Hydrophobic polydopamine (HPDA) nanoparticles were prepared by surface modification of polydopamine (PDA) nanoparticles to improve their dispersion in hydrophobic polymer matrix. Poly(butylene adipate-co-terephthalate) (PBAT)/HPDA with well dispersed HPDA nanoparticles were prepared through solution coagulation. The mechanical properties of PBAT were reinforced efficiently with Young's modulus improved by more than twice at loading of 5 wt %. PBAT/HPDA composite films exhibited excellent UV-shielding performance even with only 0.5 wt % HPDA loading.

中文翻译：

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疏水性聚多巴胺纳米颗粒填充的聚（己二酸丁二醇酯-对苯二甲酸对苯二甲酸酯）复合材料，具有改善的紫外线屏蔽分散性

通过对聚多巴胺（PDA）纳米颗粒进行表面改性来制备疏水性聚多巴胺（HPDA）纳米颗粒，以改善其在疏水性聚合物基质中的分散性。通过溶液凝结制备了具有良好分散的HPDA纳米粒子的聚己二酸丁二酯-对苯二甲酸对苯二甲酸丁二醇酯（PBAT）/ HPDA。PBAT的机械性能得到有效增强，杨氏模量在5 wt％的载荷下提高了两倍以上。即使仅添加0.5 wt％的HPDA，PBAT / HPDA复合膜仍具有出色的紫外线防护性能。