Influence of graphite particles in thermal properties of amylopectin/PVA-based hydrogels

被引：1

作者：

Soares, Igor Tenorio ^{[1
]}

da Silva de Almeida, Clara Muniz ^{[2
]}

Vieira Marques, Maria de Fatima ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro IMA UFRJ, Inst Macromol Prof Eloisa Mano, Rio De Janeiro, Brazil

[2] Inst Nacl Metrol Qualidade & Tecnol INMETRO, Rio De Janeiro, Brazil

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2019年 / 138卷 / 05期

关键词：

Hydrogel; Graphite; Smart window; Thermal analysis; ALCOHOL; DEGRADATION; COMPOSITES; BLEND; FTIR;

D O I：

10.1007/s10973-019-08504-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The aim of the present work is to study the influence of graphite particles on the molecular structure of the hydrogel composed of amylopectin/poly(vinyl alcohol) hybrid matrix by thermogravimetric analysis, differential scanning calorimetry and dynamic mechanical thermal analysis techniques. Hybrid amylopectin/PVA hydrogels were prepared with and without particles, and their properties were measured. The results of the analyses showed that the presence of particles in the reaction medium decreased the formation of cross-links among macromolecular chain segments, modifying thermal and mechanical properties of hydrogel. Raman spectroscopy confirmed the obtaining of graphitic carbon particles. Besides, optical microscopy and atomic force microscopy showed a large distribution in particles dimensions.

引用

页码：3665 / 3672

页数：8

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