Post-consumer plastic waste contains blends of numerous types polyethylene (PE) and isotactic polypropylene (i-PP), whose recycling is challenging due to the complexity this stream. A comprehensive knowledge composition these recyclates essential understand structure-property relationship systems therefore upcycle them for high-value applications. To aim, we used Temperature Modulated DSC (TM-D...

Polymer processing is a technology used to transfer raw materials into products with different shapes and functionalities key step for polymer application. After years of development, the task has changed from traditional processing, which mainly addresses specific articles focuses on effect structures properties polymers, modern directly transforms “designed structure” commercial via processin...

Three polypropylene samples (1-3) were synthesized with a 4th generation Ziegler-Natta catalyst in the presence of cyclohexyldimethoxymethylsilane (donor c), dicyclopenthyldimethoxysilane (donor d) and diisopropyldimethoxysilane (donor p), respectively, as external electron donors. The physical properties of the synthesized polypropylenes were determined. For samples 1 to 3, Successive self-nuc...

Several nanocomposites were prepared by extrusion from a commercial metallocene-type isotactic polypropylene (iPP) and different amounts of two types graphene (G) nanofibers: ones with high specific surface, named GHS, the others low labeled as GLS. The number layers was found to be around eight for GLS about five in GHS. Scanning electron microscopy (SEM) images resultant iPP showed better hom...

The aim of this study was to produce isotactic polypropylene based composites filled with waste thermosetting bulk moulded composite (BMC). The influence of BMC waste addition (5, 10, 20 wt%) on composites structure and properties was investigated. Moreover, additional studies of chemical treatment of the filler were prepared. Modification of BMC waste by calcium stearate (CaSt) powder allows t...

The synthesis of chiral aluminum and yttrium alkoxides and their application for lactide polymerization are reported. The complexes (SalBinap)MOR [4, M = Al, R = (i)Pr; 5, M = Y, R = (CH(2))(2)NMe(2)] are synthesized by reacting the ligand (SalBinap)H(2) [2,2'-[(1,1'-binaphthalene)-2,2'-diylbis(nitrilomethylidyne)]bisphenol] with the appropriate metal trisalkoxide. While enantiomerically pure y...