Abstract
During extrusion and/or compounding, polymeric systems may be subjected to a complex thermo-mechanical-chemical environment, therefore monitoring the evolution of physical, rheological and chemical effects along the extruder is an important tool assisting process understanding and optimisation. Online monitoring concepts that allow sample collection, rheology measurements and RTD characterisation at specific locations along the screw axis of an extruder are presented. Each practical set-up is presented, its operation is described and the results obtained are validated experimentally. Finally, examples of the use of the tools developed for the study of specific polymer systems are presented and discussed.
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References
1.
Al-Malaika
S.
(ed.): ‘Reactive modifiers for polymers’ ; 1997 , London , Chapman and Hall .
2.
Todd
D.
(ed.): ‘Plastics compounding’ ; 1998 , Munich , Hanser .
3.
Paul
D. R.
and
Bucknall
C. B.
‘Polymer blends’ ; 2000 , Chichester , John Wiley .
4.
Chalmers
J. M.
(ed.): Spectroscopy in process analysis’ ; 2000 , Sheffield , Sheffield Academic Press .
5.
Coates
P. D.
et al: ‘In-process shear flow measurements in extrusion and injection moulding’, Polymer Insights, University of Bradford, UK , 1998 .
6.
Pabedinskas
A.
,
Cluett
W. R.
and
Balke
S. T.
Polym. Eng. Sci , 1991 , 31 , 365 .
7.
Barnes
S. E.
,
Sibley
M. G.
,
Crown
E. C.
,
Edwards
H. G. M.
,
Scowen
I. J.
and
Coates
P. D.
Proc. Polymer Processing Society Annual Meeting: PPS-18, Guimardes, Portugal , 2002 .
8.
Tatibouet
J.
and
Huneault
M.
Int. Polym. Proc ., 2002 , XVII , 49 .
9.
Gonnet
J.-M.
,
Guillet
J.
,
Raveyre
C.
,
Assezat
G.
,
Fulchiron
R.
and
Seytre:
G.
Polym. Eng. Set , 2002 , 42 , 1171 .
10.
Bur
A. J.
,
Roth
S. C.
and
McBrearty
M.
Rev. Set Instrum ., 2002 , 73 , 2097 .
11.
Dealy
J. M.
and
Wissbrun
K. F.
‘Melt rheology and its role in plastics processing’ ; 1990 , New York , Van Nostrand Reinhold .
12.
Macosko
C. W.
: aheology principles, measurements and applica-tions'; 1994 , New York , VCH .
13.
Machado
A. V.
,
Covas
J. A.
M
and
van Duin : J. Appl. Polym. Sci , 1999 , 71 , 135 .
14.
Covas
J. A.
,
Carneiro
O. S.
,
Maia
J. M.
,
Filipe
S. A.
and
Machado
A. V.
CJChe , 2002 , 80 , 1065 –1074 .
15.
Carneiro
O. S.
,
Covas
J. A.
and
Vergnes
B.
J. Appl. Polym. Sci ., 2000 , 78 , 1419 .
16.
Covas
J. A.
,
A
J.
Nóbrega and J. M. Maia : Polym. Testing , 2000 , 19 , 165 .
17.
Maia
J. M.
,
Carneiro
O. S.
A. V. Machado and J. A. Covas: Appl. Rheology , 2002 , 12 , 18 .
18.
Bousmina
M.
and
Muller
R.
RheoL Acta , 1996 , 35 , 369 .
19.
Lacroix
C.
,
Grmela
M.
and
Carreau
P. J.
J. RheoL , 1998 , 42 , 41 .
20.
Minale
P
. Moldenaers and J. Mewis : J. Rhea , 1999 , 43 , 815 .
21.
Wolf
D.
and
White
D. H.
AIChE J ., 1976 , 22 , 122 .
22.
Gendron
D.
,
Daigneault
L. E.
,
Tatibouet
J.
and
Dumoulin
M. M.
Adv. Polym. Technol , 1996 , 15 , 111 .
23.
Huneault
M. A.
: Proc. SPE-ANTEC: Retec Polyblends ‘97, Boucherville , IN , 1997 , Polymer Processing Society.
24.
Potente
H.
and
Koch
M.
Adv. Polym. Technot , 1989 , 9 , 119 .
25.
Wetzel
M. D.
,
Shih
C. K.
and
Sundararaj
U.
Proc. SPE-ANTEC ‘97 , Toronto, Canada , 1997 , Polymer Processing Society.
26.
Hu
G.-H.
and
Kadri
I.
Polym. Eng. Sci , 2000 , 39 , 20 .
27.
Nietsch
T.
,
Cassagnau
P.
and
Michel
A.
Int. Polym. Process ., 1997 , XII , 307 .
28.
Fischer
D.
,
Bayer
T.
,
Jakisch
L.
,
Stephan
M.
and
Eichhorn
K.-J
Proc. Polymer Processing Society Annual Meeting: PPS-13 , Secaucus, USA , 1997 .
29.
Chen
L.
,
Pan
Z.
G
and
-H. Hu : AIChE J , 1993 , 39 , 1455 .
30.
Carneiro
O. S.
,
Caldeira
G.
and
Covas
J. A.
J. Mater. Process. TechnoL , 1999 , 92 –93 , 309 .
31.
Kim
B.
and
White
J. L.
Polym. Eng. Sci , 1997 , 37 , 576 .
32.
Gloor
P. E.
,
Tang
Y.
,
Kostanska
A. E.
and
Hamielec
A. E.
Polymer , 1994 , 34 , 1012 .
33.
Machado
A. V.
,
Covas
J. A.
M
and
van Duin : J. Polym. Set A — Polym. Chem ., 2000 , 38 , 3919 .
34.
Berzin
F.
and
Vergnes
B.
Polym. Eng. Set , 2000 , 40 , 344 .