Hybrid nanoparticles (NPs) having both reactive epoxide groups (from polyhedral oligomeric-silsesquioxane (POSS) grafts) and long poly(methyl methacrylate) (PMMA) chains, POSS(epoxy)_x-g-PMMA_y, were synthesized and used as reactive compatibilizers for immiscible polyvinylidene fluoride/poly(l-lactide) (PVDF/PLLA) (50/50) blends. It was anticipated that the NPs would react with the PLLA during melt mixing and would be located solely at the PLLA/PVDF interface because the PMMA side chains and the in-situ grafted PLLA chains would entangle with the PVDF and PLLA phases, respectively. However, effective compatibilization was only achieved by first blending the NPs with the PLLA followed by melt mixing with the PVDF. Elemental mapping images indicated that the NPs had a greater affinity for PVDF than for PLLA and were encapsulated in PVDF during one-step melt mixing or initial mixing with PVDF. The affinity of the compatibilizer with the blend components is therefore critically important for the effective compatibilization of immiscible polymer blends.

合成了具有反应性环氧基团（来自多面体低聚倍半硅氧烷（POSS）接枝）和长聚甲基丙烯酸甲酯（PMMA）链，POSS（环氧）_x -g-PMMA _y的杂化纳米颗粒（NPs）并将其用作反应性不混溶的聚偏二氟乙烯/聚（l）的增容剂-丙交酯（PVDF / PLLA）（50/50）共混物。可以预料，NPs将在熔融混合过程中与PLLA反应，并仅位于PLLA / PVDF界面，因为PMMA侧链和原位接枝的PLLA链将分别与PVDF和PLLA相缠结。但是，只有先将NP与PLLA混合，然后与PVDF熔融混合，才能实现有效的相容性。元素作图图像表明，NPs对PVDF的亲和力大于对PLLA的亲和力，并且在一步熔融混合或与PVDF的初始混合过程中被包裹在PVDF中。因此，增容剂与共混物组分的亲和力对于不混溶的聚合物共混物的有效增容至关重要。