• The Polyolefin HTE Workflow of HTExplore

  • The PPR48 platform of HTExplore: front view of the reaction modules

  • The PPR48 platform of HTExplore: top view of the reaction modules

  • The PPR48 platform: detail of the solution injector ports

  • Close-up of the pre-heated auto-sampler of the Bruker Avance III NMR setup with high-temperature cryoprobe

Polyolefin Characterization

 

 

The following characterizations are offered for polyolefin samples provided by the customer.

NMR Spectroscopy

Unit price

Results / Specifications

 



Quantitative 13C NMR spectrum

of polypropylene

 



€ 150


ü
Tacticity (steric pentad distribution) of raw sample

● Higher resolution on demand

 


● Tacticity (steric pentad distribution) of ‘isotactic’ fraction (on raw sample without fractionation by spectral simulation) on demand



Quantitative 13C NMR spectrum of random iPP copolymer




€ 250


ü
Comonomer composition

üTacticity (steric pentad distribution) of the propene homosequences



Quantitative 13C NMR spectrum of impact PP (iPP/EPR blend)

 



€ 300


ü
Relative amounts of iPP and EPR fractions

üTacticity (steric pentad distribution) of iPP fraction
● Comonomer composition of EPR fraction on demand



Quantitative 13C NMR spectrum of LLDPE

 



€ 250


ü
Comonomer composition

üComonomer triad distribution
● Higher resolution on demand



Quantitative 13C NMR spectrum of EPR




€ 250


ü
Comonomer composition

üComonomer triad distribution
● Higher resolution on demand

High Temperature GPC

Unit price

Remarks



Molecular weight distribution of PP / LLDPE / EPR




€ 100


ü
Mn, Mw (with universal calibration method)

üSingle measurement
● Simulation of the distribution on demand



Molecular weight distribution of PP / LLDPE / EPR




€ 150


üMn, Mw (with universal calibration method)

üMeasurement in duplicate
● Simulation of the distribution on demand

 

Figures 1 and 2 show typical quantitative 13C NMR spectra of a PP homopolymer and an ethene/1-hexene copolymer sample, with integral values of relevant peaks. It may be worthy to recall here the long tradition of excellence of HTExplore scientists in polyolefin microstructure assessment (see e.g. Busico, V.; Cipullo, R. Progr. Polym. Sci.2001, 26, 443-533 for polypropylene; Busico, V.; Cipullo, R.; Segre, A.L. Macromol. Chem. Phys.2002, 203, 1403-1412 for ethene/propene copolymers).

Figure 3 reports overlays of GPC curves for two PP homopolymer samples characterized in triplicate, for a simple visual evaluation of method reproducibility.

The throughput of the Bruker Avance III NMR spectrometer and Freeslate Rapid-GPC setup of HTExplore guarantees rapid processing of the samples (on average, 1 to 2 weeks from delivery). If you are interested, please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it..

 

figura1 polyolefin characterization

Figure 1. Quantitative 13C NMR spectrum (methyl region) of a typical PP homopolymer sample.

 

figura2 polyolefin characterization

Figure 2. Quantitative 13C NMR spectrum of a typical ethene/1-hexene copolymer sample.

 

figura3 polyolefin characterization

Figure 3. Overlays of triplicate GPC curves for two typical Ziegler-Natta PP homopolymer samples
(the sharp peak to the left is due to the stabilizer).

 

 

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