Dynamic mechanical behavior and relaxations in polymers and polymeric blends

Química Nova

Cassu, Silvana Navarro¹  Felisberti, Maria Isabel¹  Universidade Estadual de Campinas, Campinas¹  Instituto de Aeronáutica e Espaço, São José dos Campos¹ 

关键词: DMA;    polymer;    polymer blends.;   

DOI  :  10.1590/S0100-40422005000200017

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Dynamic mechanical analysis (DMA) is widely used in materials characterization. In this work, we briefly introduce the main concepts related to this technique such as, linear and non-linear viscoelasticity, relaxation time, response of material when it is submitted to a sinusoidal or other periodic stress. Moreover, the main applications of this technique in polymers and polymer blends are also presented. The discussion includes: phase behavior, crystallization; spectrum of relaxation as a function of frequency or temperature; correlation between the material damping and its acoustic and mechanical properties.

【 授权许可】

Unknown