This study assesses the impact of Treated Distillate Aromatic Extract (TDAE) oil, at concentrations of 0–20 parts per hundred rubber (phr), on the glass transition temperature (T) of High Vinyl/Low Styrene Styrene-Butadiene Rubber (HVLSS-SBR), polybutadiene rubber (BR), and their blends with weight ratios of 70/30 and 50/50. Using Dynamic Mechanical Analysis, Broadband Dielectric Spectroscopy, and Positron Annihilation Lifetime Spectroscopy, we found that TDAE modifies T and fractional free volume (F) differently across materials. In HVLSS-SBR, TDAE reduced T by approximately 10 °C and increased F by 0.8 %. In BR, TDAE raised T by 5–7 °C without altering F. The 70/30 blend showed no T change but a 0.6 % F increase. For the 50/50 blend, one Havriliak-Negami equation indicated a T rise of 2–3 °C and a 0.4 % F increase. A two-equation analysis revealed a 6 °C T increase and 0.9 % F boost in the BR-rich phase, versus a 2 °C rise and 0.3 % F uptick in the HVLSS-SBR-rich phase. The sequence of compatibility, influenced by TDAE, is crystalline BR > amorphous BR > HVLSS-SBR >70/30 blend >50/50 blend. This study provides valuable insights into the behavior of TDAE oil in rubber blends and can serve as a basis for further research in this field.

中文翻译：

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TDAE 芳香油对聚合物共混物的偏好：S-SBR、BR 和可混溶 S-SBR/BR 体系的分析


本研究评估了浓度为每百份橡胶 0-20 份 (phr) 的经处理馏分芳香族萃取物 (TDAE) 油对高乙烯基/低苯乙烯丁二烯橡胶 (HVLSS-) 玻璃化转变温度 (T) 的影响。 SBR）、聚丁二烯橡胶（BR）及其重量比为70/30和50/50的共混物。使用动态力学分析、宽带介电谱和正电子湮没寿命谱，我们发现 TDAE 对不同材料的 T 和自由体积分数 (F) 的修改不同。在 HVLSS-SBR 中，TDAE 将 T 降低约 10 °C，将 F 提高 0.8%。在 BR 中，TDAE 将 T 升高 5–7 °C，但不改变 F。70/30 混合物的 T 没有变化，但 F 增加了 0.6%。对于 50/50 混合，Havriliak-Negami 方程表明 T 升高 2–3 °C，F 升高 0.4%。两方程分析显示，富含 BR 相的 T 升高 6 °C，F 升高 0.9%，而富含 HVLSS-SBR 相的 T 升高 2 °C，F 升高 0.3%。受TDAE影响，相容性顺序为结晶BR>非晶BR>HVLSS-SBR>70/30共混>50/50共混。这项研究为 TDAE 油在橡胶共混物中的行为提供了宝贵的见解，可以作为该领域进一步研究的基础。