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首页> 外文会议>Society of Plastics Engnieers annual technical conference >MECHANOCHEMISTRY EFFECTS IN RECYCLED POLYPROPYLENE AND ITS BLENDS DURING SOLID-STATE SHEAR PULVERIZATION (S~3P)
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MECHANOCHEMISTRY EFFECTS IN RECYCLED POLYPROPYLENE AND ITS BLENDS DURING SOLID-STATE SHEAR PULVERIZATION (S~3P)

机译：固态剪切粉碎过程中再生聚丙烯的机械化学作用及其混合物（S〜3P）

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On-going research focuses on understanding the mechanochemistry during Solid-State Shear Pulverization (S~3P) of recycled polypropylene (PP) and its blends. Free radicals formed during this process act as compatibilizing agents for ordinarily incompatible polyolefin blends. It was observed earlier with Nuclear Magnetic Resonance spectroscopy that each S~3P cycle converts a small portion of polypropylene chains from isotactic to atactic stereoregularity. Small amounts of such atactic chain segments impart additional levels of toughness, which offset, in part, the damage associated with the inevitable chain scission. We determined how many processing cycles S~3P-made recycled PP can endure without significant loss of mechanical properties.
机译：正在进行的研究侧重于理解再生聚丙烯（PP）的固态剪切粉碎机（S〜3P）及其共混物中的机械化学。在该过程中形成的自由基作为平面不相容的聚烯烃共混物的相容剂。之前观察到核磁共振光谱，每个S〜3P循环将一小部分聚丙烯链从全同立方体转化为无规则的立体调节性。少量这种避免的链段赋予额外的韧性，部分韧性部分地部分地抵消与不可避免的链群相关的损害。我们确定了有多少处理循环S〜3P制造的再生PP可以忍受，而不会损失机械性能。

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