50 years ago, Karl Ziegler and Giulio Natta were awarded the Nobel Prize for their discovery
of the catalytic polymerization of ethylene and propylene using titanium compounds and …

As the saturation rate of the bulk polyolefin market accelerates, the development of high
value-added polyolefins becomes increasingly urgent. Particular attention is directed …

Recent advances in the field of additive manufacturing (AM) or 3D printing, have garnered
serious interest for its potential to substitute time-consuming and costly subtractive and …

A series of long-chain branched polyamide 6 samples (LCB PA6s) with well-defined branch
length were successfully fabricated via reactive extrusion by tuning various linear PA6s as …

The synthesis of polyethylenes with precise branching, especially long-chain branching
(LCB), using ethylene monomer as a single feedstock is of a significant academic and …

Understanding of the physical characteristics of a polymer requires molar mass
determination. For the commercially available polymers, having average molar mass below …

Linear high-density polyethylenes with molar masses M w between 240 and 1,000,000
g/mol, obtained by metallocene catalysts, were characterized in shear using oscillatory and …

We present a new method for the determination of highly precise continuous relaxation
spectra. The method is based on the use of piecewise cubic Hermite splines, which are fairly …

The tuning of branching density and branch-type distribution of the polyolefin through the
ligand modification in “chain-walking”-type late transition metal catalysts is highly desired …

Nickel α-diimine catalysts have been previously shown to perform the chain straightening
polymerization of α-olefins to produce materials with melting temperatures (T m) similar to …