在聚烯中生物原酸衍生物的抗氧化活性
Jannik Mayer1, René Steinbrecher2, Elke Metzsch-Zilligen1
1Division Plastics, Fraunhofer Institute for Structural Durability and System Reliability LBF, Schlossgartenstraße 6, D-64289 Darmstadt, Germany.
Polymers
|September 9, 2023
概括
从天然的p-hydroxycinnamic酸中提取的新型生物基抗氧化剂为聚合物稳定提供了可持续的替代品. 酸在聚烯中表现优越,性能优于商业稳定剂.
科学领域:
- 聚合物科学 聚合物科学
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 基于石油的添加剂面临着环境审查,推动对可持续替代品的需求.
- 天然抗氧化剂有可能替代聚合物中的合成稳定剂.
- p-基胺酸是丰富的天然化合物,具有抗氧化特性.
研究的目的:
- 从p-coumaric,ferulic和sinapic酸中合成基于的新型抗氧化剂.
- 研究这些生物基抗氧化剂的结构-性质关系.
- 评估它们作为聚烯 (PP) 中稳定剂的有效性.
主要方法:
- 从p-hydroxycinnamic酸中合成新型.
- 使用核磁共振 (NMR) 和富里埃变换红外光谱法 (FTIR) 进行结构性表征.
- 通过热重力测量分析 (TGA) 评估热稳定性.
- 使用2,2-二-1-皮克利水 (DPPH) 试验的激素清理活动评估.
- 在PP中通过挤出,氧化诱导时间 (OIT) 和热老化进行聚合物稳定性能测试.
主要成果:
- 新的生物基抗氧化剂已成功合成并进行结构验证.
- 合成的 Ester 具有很高的热稳定性 (280°C以上).
- 合成的化合物被证实具有激素清除活性.
- 与商业稳定剂相比,酸衍生物显示出优越的PP加工稳定性.
结论:
- 合成的p-hydroxycinnamic酸是一种有希望的生物基抗氧化剂.
- 它们的高热稳定性和激素清除活性使它们适合于聚合物稳定.
- 酸衍生物显示出作为传统稳定剂的高性能,可持续的替代品的潜力.
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