Supplementary material
relative heat flow, exo>
Fig. S1. Transversal SEM image and EDX analysis of copper coated cellulose embedded in epoxy. The
image was taken with a Hitachi TEM300 with an Energy Dispersive X-ray Spectrophotometers
Quantax70 for EDX qualitative analysis (chromium has been used to coat the analysis surface). The EDX
analysis (left side image) confirms that a thin Cu layer has been deposited on the cellulose nanopaper.
Conditioned
Vacuum-dried
30
40
50
60
70
80
90
100
110
120
130
140
150
Temperature (ºC)
Fig. S2. DSC traces of conditioned nanopaper (at RH=52%) and vacuum-dried nanopaper.
4
4
10
10
b)
E´(MPa)
E´ (MPa)
a)
3
10
2
10
0,01
3
10
2
0,1
1
10
displacement (m)
100
10
1E-4
1E-3
0,01
0,1
1
10
strain (%)
Fig. S3. Dynamic mechanical storage modulus (E´) vs. displacement (a) and vs. strain (b). Those
experiments are carried out to determine the Linear Viscoelastic Region (LVR).
Fig. S4. Wide angle X-ray diffraction patterns of cellulose nanopaper obtained at a temperatures ranging
from -150ºC to 250ºC. Data were collected on a Bruker D8 Advance diffractometer operating at 30 kV
and 20 mA, equipped with a Cu tube (λ = 1.5418 Å), a Vantec-1 PSD detector, and an Anton Parr MRIwide low-temperature chamber. The powder patterns were recorded in 2θ steps of 0.033º every 5ºC using
a heating rate of 0.05 ºC s-1.
a)
b)
Fig. S5. Photographs showing cellulose nanopaper before (a) and after (b) DMA experiment. Cellulose
nanopaper is partially degraded during DMA experiment as a consequence of overheating.