Journal ArticleDOI
Rheological properties of branched low‐density polyethylene
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TLDR
In this article, the shear flow properties of six commercially available long-chain branching low-density polyethylene resins were determined using a cone-and-plate rheometer at low shear rates and a capillary rheometry at high shear rate.Abstract:
The shear flow properties of six commercially available long-chain branching low-density polyethylene resins were determined, using a cone-and-plate rheometer at low shear rates and a capillary rheometer at high shear rates. Also determined were the elongational viscosities of the resins, using an apparatus developed by Ide and White. Interpretation of the rheological measurements is given with the aid of the molecular parameters, namely, molecular weight and molecular weight distribution.read more
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Effect of composition and comonomer type on the rheology, morphology and properties of ethylene-α-olefin copolymer/polypropylene blends
TL;DR: In this paper, the rheology, morphology, thermal and mechanical properties of blends containing low molecular weight polypropylene (PP) and metallocene-based ethylene-α-olefin copolymers (ECs) have been investigated.
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Elongational rheology of LLDPE / LDPE blends
TL;DR: In this article, the effect of low density polyethylene (LDPE) content on the crystallinity and strain hardening of LLDPE/LLDPE blends was investigated.
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Recent advances in polymer reaction engineering: Modeling and control of polymer properties
TL;DR: In this paper, a review of recent developments in modeling techniques for the calculation of polymer properties including molecular weight distribution, copolymer composition distribution, sequence length distribution and long chain branching is presented.
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Flow curve–molecular weight distribution: Is the solution of the inverse problem possible?†
TL;DR: Several different theoretical models have been developed relating the flow curve of a polymer melt to its molecular weight distribution (MWD), which can be used to calculate the MWD width as discussed by the authors.
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Influence of side‐chain structures on the viscoelasticity and elongation viscosity of polyethylene melts
TL;DR: In this article, the side-chain structures of polyethylene melts were investigated to investigate how side chain structures influence the elongation viscosity and viscoelastic properties, and the results determined by the Phan-Thien-Tanner (PTT) model showed that uniform side chain distribution lowers the entanglement, which results in a low storage modulus and shear-thinning behavior.