Characterization of Two Historical Postage Stamps Made from Cotton Fibers and Their Restoration Trials Based on the Experimental Studies

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_center" colspan="4">Treatment</td></tr><tr class="thead"><td class="align_left">Blank samples</td><td class="align_center">0.7% Klucel G</td><td class="align_center">0.2% TiO<sub>2</sub> NP</td><td class="align_center">Mixture of 0.7% Klucel G + 0.2% TiO<sub>2</sub> NP</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">UPUA</td><td class="align_center">UPUA</td><td class="align_center">UPUA</td><td class="align_center">UPUA</td></tr><tr><td class="align_left">UPPA</td><td class="align_center">UPPA</td><td class="align_center">UPPA</td><td class="align_center">UPPA</td></tr><tr><td class="align_left">PUA</td><td class="align_center">PUA</td><td class="align_center">PUA</td><td class="align_center">PUA</td></tr><tr><td class="align_left">PA</td><td class="align_center">PA</td><td class="align_center">PA</td><td class="align_center">PA</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Treatments used for the four paper samples.</div>

Journal of Chemistry

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Table 1

Table 1: Characterization of Two Historical Postage Stamps Made from Cotton Fibers and Their Restoration Trials Based on the Experimental Studies 