H-bonding in entrapped water in poly(o-methoxyaniline):: Results from a differential scanning calorimetry study

被引：8

作者：

de Souza, NC

Silva, JR

Giacometti, JA

Oliveira, ON

机构：

[1] Univ Estadual Paulista, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil

[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

THERMOCHIMICA ACTA | 2006年 / 441卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

poly(o-methoxyaniline); H-bonding; entrapped water; differential scanning calorimetry;

D O I：

10.1016/j.tca.2005.12.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Differential scanning calorimetry (DSC) was used to investigate entrapped water in poly(o-methoxyaniline) (POMA) in powder form. Two endothermic peaks were attributed to removal of water molecules that were adsorbed with distinct energies. By obtaining thermograms at various heating rates, we succeeded in applying Kissinger's approaches to estimate activation energies for the water adsorbed. The values obtained were ca. 25 and 53 kJ/mol, which correspond to H-bonding interactions, probably at the amine and imine centers of POMA, respectively. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：124 / 126

页数：3

共 19 条

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