Long-chain branched polypropylene: crystallization under high pressure and polymorphic composition
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Thermal Analysis and Calorimetry"
DOI: 10.1007/s10973-020-09931-1
Abstract: High-pressure crystallization and resulting polymorphic composition of long-chain branched polypropylene (LCB-PP) were studied and compared with common linear isotactic polypropylene (PP). Commercially available LCB-PP and PP with similar melt flow indexes were crystallized under several… read more here.
Keywords: polymorphic composition; crystallization; long chain; chain branched ... See more keywords
Synthesis and properties of long-chain branched poly(l-lactide)s by self-polycondensation of AB2 macromonomers
Sign Up to like & getrecommendations! Published in 2019 at "Materials Today Communications"
DOI: 10.1016/j.mtcomm.2019.05.004
Abstract: Abstract Long-chain branched poly( l -lactide)s (LCB-PLLAn) were successfully synthesized by self-polycondensation of AB2 macromonomers. The control of the lactide segment length allows to investigate the effect of branching density on the crystallization and rheological… read more here.
Keywords: branched poly; chain; chain branched; self polycondensation ... See more keywords
Synthesis of Long-Chain Branched Polyolefins by Coordinative Chain Transfer Polymerization
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DOI: 10.1021/acs.macromol.9b01705
Abstract: Synthesis of long-chain branched polymers has been a crucial concern in the polyolefin industry. In this study, a method to produce long-chain branches (LCBs) in coordinative chain transfer copolym... read more here.
Keywords: chain; synthesis long; chain branched; long chain ... See more keywords
Rheological Behavior of Blends of Metallocene Catalyzed Long-Chain Branched Polyethylenes. Part I: Shear Rheological and Thermorheological Behavior
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DOI: 10.3390/polym13030328
Abstract: Long-chain branched metallocene-catalyzed high-density polyethylenes (LCB-mHDPE) were solution blended to obtain blends with varying degrees of branching. A high molecular LCB-mHDPE was mixed with low molecular LCB-mHDPE at varying concentrations. The rheological behavior of those… read more here.
Keywords: long chain; lcb mhdpe; chain branched; molar mass ... See more keywords
Tuning High and Low Temperature Foaming Behavior of Linear and Long-Chain Branched Polypropylene via Partial and Complete Melting
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DOI: 10.3390/polym14010044
Abstract: While existing foam studies have identified processing parameters, such as high-pressure drop rate, and engineering measures, such as high melt strength, as key factors for improving foamability, there is a conspicuous absence of studies that… read more here.
Keywords: chain branched; method; foamability; long chain ... See more keywords