Products and services : polymer analysis by GPC/SEC size-exclusion chromatography in solution

Molar mass averages and distribution, chemical composition distributions, viscosity, oligomers, REACH, FDA.

Mechanical properties of polymer materials are closely related to molar mass and to chemical composition. Several chromatography modes with adequate coupling give structural and composition information.

GPC/SEC Size-Exclusion Chromatography of high-performance polymers is the specialty of PEAKEXPERT.

Noticeable eluents for GPC/SEC are :

hexafluoroisopropanol HFiP for POM, PET, PBT and the most of polyamides PA
trichlorobenzene TCB at 160°C for polyolefins PE PP EP copolymers and EVA
o-chloronaphtalene at 210°C for PPS polyphenylsulfide
dimethylacetamide DMAc for PVDF
proprietary low and high temperature eluents for GPC/SEC of PEEK and other PAEK polyaryletherketone (PEK, PEKEKK, PEKK)
proprietary low temperature eluent for GPC/SEC of LCP Liquid Crystal Polymers - fully aromatic polyesters

For most of the GPC/SEC eluents, different types of detection are available :

Concentration detections : RI, UV, fluorescence, ELSD for special purposes
Molar Mass sensitive detections : multiangles light scattering, differential viscosimetry
Intelligent detections : FTIR, MS, 1H NMR
Fraction collection for further analysis or return to client laboratory

Main GPC-SEC applications are:

products comparison (good/bad),
molar mass distribution,
degradation study,
REACH and FDA regulation,
masses molaires absolues,
chemical composition distribution,
oligomers and functionnality,
viscosity and branching,
raw materials fingerprint,
quality control
others on your request.

HIGH-PERFORMANCE POLYMERS
PEAKEXPERT specialty
PEEK, PAEK, PARA, PPS, PEI, PI, PAI
polyphthalamides PPA, liquid crystal polymers LCP

TECHNICAL POLYMERS
polyamides PA, POM, PET, PBT, PMME, UHMPE,
ABS, SAN, PC, epoxy, acrylates, PU,
silicones, fluorinated polymers and PVDF

BIOPOLYMERS
PLA, PHA, PHB, PBS and other biopolyesters,
starches, cellulose et cellulosiques

COMMODITY POLYMERS
HDPE, LDPE, PP, polyolefins, copolymers, PS, PVC