Evaluation of Addition of Carbon Nano Materials Over Properties of an Elastomeric Matrix

Beatriz Adriana Salazar-Cruz,Cynthia Graciela Flores-Hernandez,Jose Luis Rivera-Armenta,Juventino Lopez-Barroso,Jorge Estrada-Martinez,Maria Yolanda Chavez-Cinco

doi:10.37358/mp.20.4.5405

Abstract

In the present work, the effect of the addition of different types of carbon nano structures on the mechanical, thermomechanical and thermal properties of a radial structure of styrene-butadiene-styrene (SBSR) copolymer matrix is reported. Different carbon nanostructures were used as nano-rein-forcements: expanded graphite (XG), graphene oxide (GO), reduced graphene oxide (RGO) and exfo-liated graphene (EG). These carbon structures present various functional groups, such as carbonyl, epoxy, and others, which are the responsible for the interaction between the polymer matrix and the nano particles. The compatibility induced between the nanomaterials and the elastomeric matrix fa-vors the stable dispersion of the nanocomposites during their obtention process. For instance, the ad-dition of GO increased in 10 and 16% the tensile strength and storage modulus of the nanocomposites. The fracture surface patterns in the nanocomposites after the tensile test was observed by scanning electron microscopy. Also, the dynamic mechanical analysis (DMA) and thermal characterization showed differences in the viscoelastic behavior of the reinforced nanocomposites with different carbon nanomaterials.

Highlights

The development of high-performance polymer composites has become a challenge for materials researchers, who work on obtaining multifunctional materials for various purposes [1, 2]
The 2D carbon nanomaterials used as reinforcements have similar 2D structures to the pristine graphene, which outstanding properties are attributed to the high stability of the lattice built by the sp2 bonds [20]
The remainder spy lattice present in graphene oxide (GO) is enough to use it as reinforcement, and it is responsible for improving the mechanical properties

Summary

Introduction

The development of high-performance polymer composites has become a challenge for materials researchers, who work on obtaining multifunctional materials for various purposes [1, 2]. Composite materials of polymeric matrices exhibit improvements in their mechanical, thermal and chemical properties when modified with reinforcement materials, due to the fact that their interfaces are reenriched by the synergistic effect between the matrix and the nanostructure; a typical micro reinforcement usually creates better interfaces and, produces notable improvements in mechanical properties, as well as in chemical and environmental resistance [1,2,3]. Since the typical poor reinforcement-matrix compatibility implies deficient mechanical properties, some strategies have been explored in order to overcome this problem on the composite preparation, such as chemical functionalization or using coupling agents [4]

Methods

Results

Conclusion