In this study, it was aimed to investigate octavinyl‐polyhedral oligomeric silsesquioxane (OV‐POSS) incorporation into natural rubber (NR)/butadiene rubber (BR) elastomer blends as a potential compatibilizer. The effects of OV‐POSS loading levels on the thermal, mechanical, morphological, and dynamic‐mechanical properties of elastomer blends were explored. Fourier‐Transform Infrared Spectrometer (FTIR), Temperature Scanning Stress Relaxation (TSSR), and Differential Scanning Calorimetry (DSC) results revealed the conceivable effect of OV‐POSS nanoparticles in the vulcanization through reacting with sulfur and/or elastomers. Scanning Electron Microscope (SEM), X‐Ray Diffraction (XRD), and tensile test measurements supported the improvement of mechanical properties due to homogeneous dispersion at low loading levels. On the other hand, high amount of OV‐POSS incorporation (7 and 10 phr) resulted in a decrease in mechanical properties, owing to the agglomeration of nanoparticles. According to contact angle and Dynamic mechanical analysis (DMA) results, it could be concluded that OV‐POSS nanoparticles were localized at the interface of the elastomers and enabled the compatibilization of immiscible NR/BR blends.

中文翻译：

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POSS纳米颗粒可作为天然橡胶/丁二烯橡胶混合物的潜在相容剂

在这项研究中，旨在研究将八乙烯基-多面体低聚倍半硅氧烷（OV-POSS）掺入天然橡胶（NR）/丁二烯橡胶（BR）弹性体混合物中作为潜在的增容剂。探索了OV-POSS加载量对弹性体共混物的热，机械，形态和动态机械性能的影响。傅里叶变换红外光谱仪（FTIR），温度扫描应力松弛（TSSR）和差示扫描量热法（DSC）结果表明，OV-POSS纳米颗粒通过与硫和/或弹性体反应在硫化过程中产生了可想象的效果。扫描电子显微镜（SEM），X射线衍射（XRD）和拉伸试验测量结果表明，由于在低载荷水平下的均匀分散，机械性能得到了改善。另一方面，由于纳米粒子的团聚，大量的OV-POSS掺入（7和10 phr）导致机械性能下降。根据接触角和动态力学分析（DMA）结果，可以得出结论，OV-POSS纳米颗粒位于弹性体的界面处，并能与不混溶的NR / BR共混物相容。