# Comparative Studies on Nanocellulose as a Bio-Based Consolidating Agent for Ancient Wood
## 3 Results and Discussion
### Characterization of Treated Degraded Wood Samples
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline  & & **L\({}^{*}\) (D65)** & **a\({}^{*}\) (D65)** & **b\({}^{*}\) (D65)** & & & & \\ \hline \multirow{3}{*}{**NT POST**} & SCI & 63.06 & 9.41 & 23.30 & \(\Delta\)**L** & \(\Delta\)**C** & \(\Delta\)**E** \\ \cline{2-9}  & SCI & 63.06 & 9.41 & 23.30 & SCI & \(-\)1.29 & 0.57 & 1.41 \\ \hline \multirow{3}{*}{**Nanocellulose POST**} & SCI & 61.77 & 9.06 & 23.75 & SCE & \(-\)1.31 & 0.58 & 1.43 \\ \cline{2-9}  & SCE & 61.68 & 9.09 & 23.84 & & & & \\ \hline \end{tabular}
\end{table} 
Table 5: Comparison of the colorimetric parameters (L\({}^{*}\), a\({}^{*}\), b\({}^{*}\)) of the untreated sample (NT) and the samples treated with nanocellulose, obtained from the colorimetric analysis carried out one month after the treatment. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline  & & **L\({}^{\star}\) (D65)** & **a\({}^{\star}\) (D65)** & **b\({}^{\star}\) (D65)** & & & \\ \hline \multirow{2}{*}{**Paraloid B72 PRE**} & SCI & 51.24 & 14.07 & 28.71 & \(\Delta\)**L** & \(\Delta\)**C** & \(\Delta\)**E** \\ \cline{2-7}  & SCE & 50.97 & 14.17 & 28.92 & SCI & 0.64 & 2.69 & 2.77 \\ \hline \multirow{2}{*}{**Paraloid B72 POST**} & SCI & 51.88 & 12.96 & 26.25 & SCE & 0.73 & 2.81 & 2.91 \\ \cline{2-7}  & SCE & 51.70 & 13.01 & 26.36 & & & \\ \hline \end{tabular}
\end{table} 
Table 10: Comparison of the colorimetric parameters (L\({}^{\star}\), a\({}^{\star}\), b\({}^{\star}\)) of the samples treated with Paraloid B-72 with data collected one month earlier from the same samples. \begin{table}
\begin{tabular}{c c c c c c c c} \hline  & & **L\({}^{\star}\) (D65)** & **a\({}^{\star}\) (D65)** & **b\({}^{\star}\) (D65)** & & & \\ \hline \multirow{2}{*}{**NT PRE**} & SCI & 64.82 & 9.30 & 24.03 & \(\Delta\)**L** & \(\Delta\)**C** & \(\Delta\)**E** \\ \cline{2-7}  & SCE & 64.71 & 9.34 & 24.12 & SCI & \(-1.76\) & 0.74 & 1.91 \\ \hline \multirow{2}{*}{**NT POST**} & SCI & 63.06 & 9.41 & 23.30 & SCE & \(-1.72\) & 0.75 & 1.88 \\ \cline{2-7}  & SCE & 62.99 & 9.43 & 23.38 & & & & \\ \hline \end{tabular}
\end{table} 
Table 8: Comparison of the colorimetric parameters (L\({}^{\star}\), a\({}^{\star}\), b\({}^{\star}\)) of the untreated sample (NT) with data collected one month earlier from the same sample. \begin{table}
\begin{tabular}{c c c c c c c c} \hline  & & **L\({}^{\star}\) (D65)** & **a\({}^{\star}\) (D65)** & **b\({}^{\star}\) (D65)** & & & \\ \hline \multirow{2}{*}{**NT PRE**} & SCI & 64.82 & 9.30 & 24.03 & \(\Delta\)**L** & \(\Delta\)**C** & \(\Delta\)**E** \\ \cline{2-7}  & SCE & 64.71 & 9.34 & 24.12 & SCI & \(-1.76\) & 0.74 & 1.91 \\ \hline \multirow{2}{*}{**NT POST**} & SCI & 63.06 & 9.41 & 23.30 & SCE & \(-1.72\) & 0.75 & 1.88 \\ \hline \multirow{2}{*}{**NT POST**} & SCE & 62.99 & 9.43 & 23.38 & & & & \\ \hline \end{tabular}
\end{table} 
Table 9: Comparison of the colorimetric parameters (L\({}^{\star}\), a\({}^{\star}\), b\({}^{\star}\)) of the nanocellulose-treated samples with data collected one month earlier from the same samples. From these data, we can observe that for the untreated sample (NT), the parameters \(\Delta\)L, \(\Delta\)C, and \(\Delta\)E exhibited a small increase, meaning that the NT sample was brighter, more color-saturated, and had little variation in color--that is, it was lighter compared to the color of the same sample three years earlier. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \multicolumn{3}{c}{**L\({}^{*}\) (D65)**} & **a\({}^{*}\) (D65)** & **b\({}^{*}\) (D65)** & & & \\ \hline \multirow{2}{*}{**Nanocellulose**} & SCI & 61.77 & 9.06 & 23.75 & \(\Delta\)L & \(\Delta\)C & \(\Delta\)E \\ \cline{2-8}  & SCE & 61.68 & 9.09 & 23.84 & SCI & 0.63 & 0.23 & 0.67 \\ \hline \multirow{2}{*}{**Nanocellulose**} & SCI & 62.40 & 8.99 & 23.53 & SCE & 0.53 & 0.28 & 0.60 \\ \cline{2-8}  & SCE & 62.21 & 9.02 & 23.58 & & & & \\ \hline \hline \end{tabular}
\end{table}