<p class="MsoNormal" style="margin-bottom: 0cm; mso-pagination: none; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">This document describes the thermal analysis of kraft lignin using thermogravimetric methods.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">Thermogravimetry can be used to determine the initial decomposition temperature(s), rate(s) of decomposition, and the temperature at maximum decomposition of various materials, including lignins at atmospheric pressure. All these temperatures are solely based on the mass loss and are not necessarily the real decomposition temperatures, because not all decompositions can generate evaporation at atmospheric pressure. Thus, these values are only for comparison purposes.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">This procedure is applicable to solid lignins (e.g., powdered form) isolated using different isolation techniques (e.g., acidification with hydrochloric acid, sulphuric acid, etc., and carbonation using gaseous carbon dioxide) from the spent liquor (black liquor) generated in the kraft pulping process. It does not apply to raw black liquor.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">Thermogravimetric measurement may be performed under different types of atmosphere, e.g., an inert atmosphere or an oxidative atmosphere.</span></p>
Registration number (WIID)
86945
Scope
<p class="MsoNormal" style="margin-bottom: 0cm; mso-pagination: none; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">This document describes the thermal analysis of kraft lignin using thermogravimetric methods.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">Thermogravimetry can be used to determine the initial decomposition temperature(s), rate(s) of decomposition, and the temperature at maximum decomposition of various materials, including lignins at atmospheric pressure. All these temperatures are solely based on the mass loss and are not necessarily the real decomposition temperatures, because not all decompositions can generate evaporation at atmospheric pressure. Thus, these values are only for comparison purposes.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">This procedure is applicable to solid lignins (e.g., powdered form) isolated using different isolation techniques (e.g., acidification with hydrochloric acid, sulphuric acid, etc., and carbonation using gaseous carbon dioxide) from the spent liquor (black liquor) generated in the kraft pulping process. It does not apply to raw black liquor.</span></p>
<p class="MsoNormal" style="mso-pagination: none; mso-layout-grid-align: none; text-autospace: none; margin: 10.0pt 0cm 0cm 0cm;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN;">Thermogravimetric measurement may be performed under different types of atmosphere, e.g., an inert atmosphere or an oxidative atmosphere.</span></p>
