羧甲基纤维素（CMC）在盐溶液中的热降解及其在石油工业流体中的应用

Thermal Degradation of Carboxymethyl Cellulose (CMC) in Saline Solution for Applications in Petroleum Industry Fluids.

作者信息

Farias Mirele Costa da Silva, Costa Waleska Rodrigues Pontes da, Nóbrega Karine Castro, Romualdo Victória Bezerra, Costa Anna Carolina Amorim, Nascimento Renalle Cristina Alves de Medeiros, Amorim Luciana Viana

机构信息

Laboratório de Pesquisa em Fluidos de Perfuração (PEFLAB), Universidade Federal de Campina Grand (UFCG), Rua Aprigio Veloso, 882, Bairro Universitário, Campina Grande 58429-900, PB, Brazil.

Unidade Acadêmica de Santo Agostinho, Universidade Federal Rural de Pernambuco (UFRPE), Rua Cento e Sessenta e Três, 300, Garapu, Cabo de Santo Agostinho 54518-430, PE, Brazil.

出版信息

Polymers (Basel). 2025 Jul 30;17(15):2085. doi: 10.3390/polym17152085.

DOI:10.3390/polym17152085

PMID:40808132

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12349426/

Abstract

This work aims to evaluate the thermal degradation of carboxymethyl cellulose (CMC) in solution in the presence of salt, as well as to study the correlation of the rheological behavior of these solutions with exposure to temperature. Step 1 involved characterizing powdered low- and high-viscosity CMC using SEM, FTIR, TGA/DrTGA, and DSC. In step 2, CMC solutions in fresh and saline water were characterized by TGA/DrTGA and viscosity tests. Step 3 exposed saline solutions to 70-150 °C for varying times, followed by TGA/DrTGA and viscosity analyses. There were no significant differences in the thermal degradation of LV and HV CMC, nor in terms of the physical state of the polymer. The results demonstrate that the use of CMC necessitates a combined analysis of thermal degradation and rheological behavior.

摘要

这项工作旨在评估羧甲基纤维素（CMC）在有盐存在的溶液中的热降解情况，并研究这些溶液的流变行为与温度暴露之间的相关性。第一步是使用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）、热重分析/微商热重分析（TGA/DrTGA）和差示扫描量热法（DSC）对低粘度和高粘度CMC粉末进行表征。在第二步中，通过TGA/DrTGA和粘度测试对新鲜水和盐水中的CMC溶液进行表征。第三步是将盐溶液在70 - 150°C下暴露不同时间，随后进行TGA/DrTGA和粘度分析。低粘度和高粘度CMC的热降解以及聚合物的物理状态方面均无显著差异。结果表明，使用CMC需要对热降解和流变行为进行综合分析。