Synthesis and Characterization of compatibilizers for blends of Polypropylene carbonate and Polybutylene succinate via free radical grafting of Maleic Anhydride _Data Files

This study focuses on creating an optimal grafting compatibilizer for blends of Polypropylene carbonate (PPC) and Polybutylene succinate (PBS). PPC and PBS were blended separately with different amounts of maleic anhydride and with and without a peroxide to aid the free radical grafting. Titration analysis evidenced that MAH reacted with the polymers terminal groups and backbones via free radical functionalization. TGA and GPC results demonstrated how the thermal stability of PPC improves with the addition of MAH. The compatibilizer that was determined to be most reactive and stable of all the formulations analyzed was PPC with 2% MAH and DCP; it greatly increases the the strain at break of blends of PPC and PBS.

本研究致力于创建一种适用于聚碳酸酯（PPC）与聚丁二酸（PBS）混合物的高效接枝相容剂。通过分别将PPC和PBS与不同量的马来酸酐（MAH）以及添加或不添加过氧化物进行混合，以促进自由基接枝。滴定分析证实，MAH通过自由基功能化与聚合物的端基和主链发生反应。热重分析（TGA）和凝胶渗透色谱（GPC）结果展示了随着MAH的添加，PPC的热稳定性得到提升。在所有分析配方中，被确定为最活泼且最稳定的相容剂是含有2% MAH和过氧化二异丙苯（DCP）的PPC；它显著提高了PPC与PBS混合物的断裂伸长率。