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Page Title:
Table 2. GPC analysis of cellulose dissolved in DMAc/LiCl |
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 Re-Distributed by http://www.tpub.com
Table 2. GPC analysis of cellulose dissolved in DMAc/LiCl
Reference
Analyzed materials
Columns
Temp,
Eluent
Flow
Injection
Conc.
Run
Standards /
Detection
Determined parameters
rate,
volume,
time,
Calibration
°C
ml/min
min
Procedure
µl
Ekmanis,
Wood sulfate pulp with DP ~
Three 30-cm cross-linked
DMAc/
1.0
0.1%
40
Polystyrene standards
Waters 410 RI
Wood sulfate pulp: Mn/Mw
80°C
300 µl
1986
500.
SDVB* Ultrastyragel
0.5%
370 - 2,880,000 D.
detector
64,700/131,900 or
(100 µl
columns, 103, 104, and
LiCl**
66,300/175,200 depending
per
105 A (Waters).
Softwood sulfite pulp.
MW vs. VR.
on what part of a
column)
chromatogram was
Efficiency 7700 p/ft.
included in calculations.
Softwood sulfite pulp:
Mn/Mw 131,900/790,000 or
158,800/795,700 or
265,400/834,900 close to
exclusion volume.
Styragel columns 103 to
Kvernheim
Bleached sulfite pulps from
30-
DMAc/
1.0
Pullulan Shodex P-82
Waters 410 RI
Bleached sulfite pulps: Mn
40 µl
106 A
& Lystad,
Scandinavian spruce (for
0.5%
standard kit (Showa
detector
37,100-68,100, Mw
45°C
1988
rayon production) containing
LiCl
~1500
Denko KK).
383,200-420,400.
~3% hemicellulose.
psi
MW vs. VR.
Whatman cellulose: Mn
Whatman CF1 cellulose
27,500, M w 68,800.
powder.
Purified cotton: Mn
Purified cotton.
212,500, Mw 933,800.
Kennedy et
Cotton linters, MW 307,000
DMAc/
1.0
Pullulan standards
A Knauer GPC
Cotton linters: MWPeak
PL gel mixed A° column
80°C
al., 1990
(by viscosity of carbanilate
0.5%
(Polymer
system
319,400.
(Polymer Laboratories
derivative).
LiCl
Laboratories Ltd.):
equipped with a
Ltd., UK), 10 µ, 0.75 x
MW 5,800 853,000
Model 98
Spruce: MWPeak
30 cm.
Spruce (softwood) sulfite
differential
365,300/17,600 (bimodal
pulp, MW 288,000.
lgMW vs. VR/VGlc.
refractometer
MWD).
Guard column, 0.7x5 cm,
packed with 10 µ 100 A°
Birch (hardwood) sulfite
Birch: MWPeak
packing material
pulp, MW 344,000.
547,000/23,600 (bimodal
(Polymer Laboratories
MWD).
Ltd.).
Ultrastyragel 103, 104,
80°C
400 µl
Timpa, 1991
Cotton fiber from Americal
DMAc/
1.0
0.08-
60
Polystyrene standards
Viscometer
Cotton fiber: M w
105 and 106 Waters
Upland cotton (Gossypium
0.5%
0.12%
from Toyo Soda
detector
1,830,000, DPw 11,300.
(100 µl
hirsutum L.) variety Texas
columns.
LiCl
Manufacturing
(Viscotek
per
Marker 1 (TM-1), 98%
(10,300 2,890,000).
Model 100).
Cotton cloth: M w
column)
cellulose.
Guard column (Phenogel,
1,310,000, DPw 8,100.
linear; Phenomenex).
Universal calibration
Waters 410 RI
Desized, scoured, and
detector.
Cellulose powder: M w
(lg(MWx[η]) vs. VR).
bleached 80x80 cotton
211,000, DPw 1,300.
printcloth.
Acid-washed cellulose
powder (Baker Cat. # 1525).
Ultrastyragel 103, 104,
Timpa &
Cotton fiber from Americal
DMAc/
1.0
0.08-
65
Polystyrene standards
Viscometer
Mw, DP w
80°C
400 µl
105 and 106 Waters
Triplett,
Upland cotton (Gossypium
0.5%
0.12%
from Toyo Soda
detector
(100 µl
1992
hirsutum L.) cultivar Texas
columns.
LiCl
Manufacturing
(Viscotek
per
Marker 1 (TM-1)
(10,300 2,890,000).
Model 100).
column)
Guard column (Phenogel,
linear; Phenomenex).
Universal calibration
Waters 410 RI
detector.
(lg(MWx[η]) vs. VR).
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