Number: 2005-011-3-400
Title: Repeatability and reproducibility
of sample preparation and analysis in high-temperature SEC
Task Group
Chairman: Jerrie
Vermeulen
Members: Nick
Aust, Robert Brüll,
T. Chang, Joachim
Clauss, Benoit Ernst,
Erik TF Gelade,
Valérie Grumel,
Albena Lederer,
Dieter Lilge, Ines
Mingozzi, Peter
Montag, Espen
Ommundsen, Greg
Saunders, Colin LiPi
Shan, Bo Song,
Sigeru Takayama,
Freddy van Damme,
and Shiping Zhu
Objective:
Standardization of the experimental conditions for the HT-SEC analysis
of polyolefins. The particular emphasis shall be on the sample preparation
with regard to dissolution temperature and time, the sample measurement
with regard to column temperature and the column set, and with regard
to the detection technique (RI, ELSD, Visco, LS). Although there
is an ASTM method for the analysis of polyolefins by HT-SEC (ASTM
D 6474), procedures for sample preparation are not addressed adequately.
The application of different detectors in HT-GPC is not addressed
at all.
Description:
Round robin tests on standard HDPE, standard PP, standard LLDPE,
ultrahigh-MW PE