Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 56, Issue 18, Pages 2867-2877Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/00219983221107096
Keywords
Epoxy resin; hybrid composites; mechanical properties; cellulose; liquid rubber
Categories
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [001]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
Ask authors/readers for more resources
This study investigates the effects of hybridizing MCC and MCCSi with NBR on the thermal, mechanical, and dynamic-mechanical behavior of epoxy. The results show that the addition of MCCSi improves the thermal stability and toughness of epoxy, while decreasing the tensile strength and elastic modulus.
Toughening epoxy resins by adding different agents has been employed as a way to reduce brittleness in composites. Some hybridization strategies combining liquid rubbers and rigid fillers can be found in the literature, but the pair cellulose-based reinforcement, such as microcrystalline cellulose (MCC), and liquid acrylonitrile butadiene rubber (NBR) is hardly studied. The aim of this work is to investigate the effect of hybridizing MCC and amino-functionalized MCC (MCCSi) with NBR on the thermal, mechanical, and dynamic-mechanical behavior of epoxy. X-ray microtomography showed a good dispersion of MCCSi fillers in epoxy/NBR compared to the non-treated MCC filler. NBR with MCCSi was found to slightly increase the thermal stability of epoxy. The addition of MCC, regardless of the functionalization, decreased tensile strength and elastic modulus, but improved impact strength and toughness properties (K-IC). Also, MCCSi composites displayed better dynamic-mechanical behavior, attributed to the enhanced chemical interaction, with a small effect on glass transition temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available