Influence of Crosslinking Density on Antioxidant Nanocellulose in Bio-degradation and Mechanical Properties of Nitrile Rubber Composites

Taib, Mohamad Nurul Azman Mohammad and Yehye, Wageeh Abdulhadi and Julkapli, Nurhidayatullaili Muhd (2019) Influence of Crosslinking Density on Antioxidant Nanocellulose in Bio-degradation and Mechanical Properties of Nitrile Rubber Composites. Fibers and Polymers, 20 (1). pp. 165-176. ISSN 1229-9197, DOI https://doi.org/10.1007/s12221-019-8575-y.

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Official URL: https://doi.org/10.1007/s12221-019-8575-y

Abstract

Nanocellulose antioxidant (Aox-NCC) was used as reinforcement and crosslinking agent in nitrile butadiene rubber (NBR) composites. The crosslinking density and volume of rubber bonded in the matrix were increased up to 3 phr and no significant improvement between 4 phr and 5 phr was recorded. The interactions of gallic acid and NCC was found to occur between the -OH and -COOH groups, as revealed by Fourier Transform Infra-Red (FTIR) and Nuclear Magnetic Resonance (NMR) analysis. Crystallinity index of Aox-NCC was increased more than 11 %, recorded by X-ray diffraction (XRD) analysis. Meanwhile, the thermal stability of Aox-NCC was increased 30°C, analyzed by thermogravimetry (TG). With the addition of 3 phr Aox-NCC, tensile strength and modulus at 500 % for NBR composites were increased significantly up to 20 %. There was no significant improvement on modulus at 100 %, modulus at 300 %, elongation at break and tear strength. The degradability of NBR composites within 6 months period was improved significantly at 5 phr of Aox- NCC. Increase in carbonyl group after soil burial test with the existence of cracks, voids and degradable parts of NBR composites were revealed. This demonstrated that, Aox-NCC plays a secure function to reinforce NBR composites. © 2019, The Korean Fiber Society, The Korea Science and Technology Center.

Item Type: Article
Funders: Postgraduate Research Grant (PPP) (PG238-2015A: Effects on surface acetylated nano-crystalline cellulose (NCC) reinforced in nitrile butadiene rubber (NBR) composite)
Uncontrolled Keywords: Biodegradable; Cellulose; Composites; Morphology; Nanocrystals
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Jan 2020 06:05
Last Modified: 08 Jan 2020 06:05
URI: http://eprints.um.edu.my/id/eprint/23344

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