Chemistry Reference
In-Depth Information
Figure 21.
Reverse engineering of high-impact polypropylene using 3D-GPC-TREF.
be clearly seen in the 3D-TREF results of
the two samples. The 3D-TREF result
shows clearly that the increase in molecular
weight needs to be in the rubbery compo-
nent of the product. In fact, the molecular
weight difference between the two products
shown in the table at the bottom the
Figure 21 also provides the information
about how much increase of the rubber
molecular weight is needed.
understanding the
m
-structure of a given
resin, it also has been useful in analyzing the
composition of polymer blends and fabri-
cated products. In today's challenging times
in polyolefin industry, a strong program in
3D-GPC-TREF technology is a highly
desirable element in a modern day poly-
olefin research organization.
Acknowledgements: The author wishes to ac-
knowledge the technical assistance of Tia Kuhl-
man, Steve Elmore and Sue Setty for setting up
and carrying out most of the 3D-GPC-TREF
experiments during the course of this work.
Concluding Remarks
We found that the combination of 3D-GPC
and 3D-TREF in a form of a hybrid system
is a very powerful toll for studying poly-
olefin
[1] Waters Corporation, 34 Maple Street, Milford, MA
01757, USA.
[2] Polymer ChAR, Valencia Technology Park, P. O. Box
176 E-46980 Paterna, Spain. E-mail Info@polymerch-
ar.com
[3] Precision Detectors, 34 Williams Way, P. O. Box
738, Bellingham, MA 02019, USA. E-mail Lighscatter@-
netscape.net
[4] Polymer Laboratories, Amherst Fields Research
Park, 160 Old Farm Road, Amherst, MA 01002, USA.
E-mail SalesUS@polymerlabs.com
[5] W. W. Yau, D. Gillespie,
-structures. Most of the successful
applications of the technique in solving
company problems are credited to a very
large part to the high precision capability of
our instrument. Automation of sample
injection and temperature programming
in our system is the key to our high
precision analyses. Analytical information
provided by this technique has the value to
greatly shorten the product development
time. Not only is 3D-GPC-TREF useful in
m
,
8947-8958; W. W. Yau, TAPPI 2005 PLACE Conference
Proceedings, TAPPI PRESS, Atlanta, Session 19, Paper
19-1.
Polymer
2001,
42
