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

陶氏化学公司开发了一种分子量分布窄、结晶度分布宽的新型丙烯-乙烯（P/E）共聚物家族。这些共聚物在保持低粘度的同时允许极高的填料负荷，因此具有良好的可加工性。工业研究表明，他们可以纳入填料负荷高达80% wt%，并保持易于加工。相比之下，LDPE和传统的P/E共聚物填充低至30 - 40 wt%，粘度太高，无法加工。这项工作由康考迪亚大学与陶氏化学公司合作进行，将是对颗粒填充聚合物的全面研究，并将为粘弹性、复合微观结构、聚合物分子结构和界面现象之间的关系提供重要的理解。这一研究项目将使加拿大的聚烯烃和塑料制造商以及颗粒填料供应商受益。它还将为聚合物科学提供重要的基础贡献。

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.