Effect of operation parameters on temperature rising elution fractionation and crystallization analysis fractionation

Anantawaraskul, Siripon; Soares, João B. P.; Wood‐Adams, Paula M.

doi:10.1002/polb.10537

Cited by 92 publications

(180 citation statements)

References 16 publications

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“…Ultimate mechanical properties and crack resistance improve as the length of the side branch increases, possibly because SCB influences morphology and tie-molecule concentration, requiring greater energy to be absorbed to initiate cracks [33]. SCB is usually detected and quantified using analytical techniques like solution differential scanning calorimetry (DSC), temperature rising elution fractionation (TREF), and crystallization analysis fractionation (CRYSTAF) [34][35][36][37][38][39].…”

Section: 21mentioning

confidence: 99%

Analytical Rheology of Polymer Melts: State of the Art

Shanbhag

2012

ISRN Materials Science

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The extreme sensitivity of rheology to the microstructure of polymer melts has prompted the development of "analytical rheology," which seeks inferring the structure and composition of an unknown sample based on rheological measurements. Typically, this involves the inversion of a model, which may be mathematical, computational, or completely empirical. Despite the imperfect state of existing models, analytical rheology remains a practically useful enterprise. I review its successes and failures in inferring the molecular weight distribution of linear polymers and the branching content in branched polymers.

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Section: 21mentioning

confidence: 99%

Analytical Rheology of Polymer Melts: State of the Art

Shanbhag

2012

ISRN Materials Science

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“…The development of fundamental models for TREF and Crystaf is a hard subject that is beyond the scope of this short review. [9,10] Hyphenated Techniques: TREF-LS When a light-scattering detector is added to TREF, it is possible to measure the weight average molecular weight (M w ) of polyolefin as a function of elution temperature or comonomer fraction. This technique provides a complementary analysis to the other hyphenated technique, GPC-IR, described above.…”

Section: Chemical Composition Distribution Of Linear Chainsmentioning

confidence: 99%

An Overview of Important Microstructural Distributions for Polyolefin Analysis

Soares¹

2007

Macromolecular Symposia

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Summary: Polyolefins with complex microstructures are becoming increasingly common in academic and industrial applications. Polyolefin analytical techniques are evolving to provide a more detailed picture of these microstructures, with the development and improvement of hyphenated-techniques and cross-fractionation methods. These modern analytical techniques provide a wealth of information on polyolefin microstructure and, despite being extremely useful, they can also be hard to interpret without the help of mathematical models that link polymerization kinetics to chain microstructure and polymer characterization results. In this paper we review some of the most important distributions for polyolefin microstructure and derive a few new expressions that help understand the results obtained with several polyolefin characterization techniques.

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“…The experiments were repeated many times and the same phenomenon was obtained. [31] Nanofiller Characterization…”

Section: Ethylene/propylene Copolymer Nanocompositesmentioning

confidence: 99%

Synthesis and properties of polyethylene/TiO₂ nanocomposites using a vanadium catalyst

Bakather

Al‐Harthi

2015

Can J Chem Eng

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In this study, a vanadium (III) complex bearing a salicylaldiminato ligand of the general formula [RN=CH(2,4‐tBu2C6H2O)]VCl2(THF)2, where R = 2,6‐iPr2C6H3, was used as a catalyst. Titanium dioxide doped with iron nanofillers was synthesized by a sol‐gel process and used to investigate the effect of nanofillers on ethylene homopolymer and ethylene/propylene copolymer properties. To the best of our knowledge, this is the first time titanium dioxide doped with iron has been used as a nanofiller in ethylene polymerization and ethylene/propylene copolymerization using a vanadium complex with methyl aluminum dichloride as a cocatalyst. Besides catalyst activity, the molecular mass (Mw) of the obtained polymer, molecular mass distribution, copolymer composition, crystallinity, and thermal characteristics of polyethylene and polyethylene/polypropylene nanocomposites were investigated.

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Effect of operation parameters on temperature rising elution fractionation and crystallization analysis fractionation

Cited by 92 publications

References 16 publications

Analytical Rheology of Polymer Melts: State of the Art

Analytical Rheology of Polymer Melts: State of the Art

An Overview of Important Microstructural Distributions for Polyolefin Analysis

Synthesis and properties of polyethylene/TiO₂ nanocomposites using a vanadium catalyst

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Effect of operation parameters on temperature rising elution fractionation and crystallization analysis fractionation

Cited by 92 publications

References 16 publications

Analytical Rheology of Polymer Melts: State of the Art

Analytical Rheology of Polymer Melts: State of the Art

An Overview of Important Microstructural Distributions for Polyolefin Analysis

Synthesis and properties of polyethylene/TiO2 nanocomposites using a vanadium catalyst

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Product

Resources

About

Synthesis and properties of polyethylene/TiO₂ nanocomposites using a vanadium catalyst