Rheology and interfacial phenomena of highly filled propylene-ethylene co-polymers

陶氏化学公司开发了一种新的丙烯-乙烯(P/E)共聚物系列，具有窄的分子量分布和宽的结晶度分布。这些共聚物允许极高的填充量，同时保持低粘度，从而具有良好的加工性。工业研究表明，它们可以加入高达80wt%的填充量，并保持易于加工。相比之下，填充低至30~40wt%的LDPE和传统的P/E共聚物的粘度可能太高，无法加工。这项由康科迪亚大学与陶氏化学公司合作完成的工作将是对颗粒填充聚合物的全面研究，将提供对粘弹性、复合微结构、聚合物分子结构和界面现象之间关系的重要理解。该研究项目将使加拿大的聚烯烃和塑料制造商以及颗粒填充剂供应商受益。此外，它还将为聚合物科学做出重要的基础性贡献。

The Dow Chemical Company has developed a new family of propylene-ethylene (P/E) copolymers with narrow molecular weight distributions and broad crystallinity distributions.  These copolymers allow exceptionally high filler loadings while maintaining a low viscosity and therefore, good processability. Industrial studies have demonstrated that they can incorporate filler loadings as high as 80 wt% and remain easily processable. In comparison, LDPE and traditional P/E copolymers filled as low as 30 40 wt% can have viscosities that are too high to process. This work, performed at Concordia University in partnership with The Dow Chemical Company, will be a comprehensive study of particulate-filled polymers and will provide important understanding of the relationships between viscoelasticity, composite microstructure, polymer molecular structure and interfacial phenomena.  This research project will benefit Canada's manufacturers of polyolefins and plastics and suppliers of particulate fillers.  It will also provide an important, fundamental contribution to polymer science.