期刊
CURRENT APPLIED PHYSICS
卷 15, 期 5, 页码 599-607出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2015.01.018
关键词
Epoxidized natural rubber (ENR-50); Pani.DBSA; Hydrogen bonding; Nanoindentation; Surface morphology
资金
- Universiti Sains Malaysia (USM) [1001.PKIMA.846015]
A new composite material from epoxidized natural rubber (ENR-50) and polyaniline have been successfully prepared. Aniline which was polymerized in the presence of dodecylbenzene sulfonic acid (DBSA), then added to ENR-50 for the preparations of ENR-50/Pani.DBSA composite films. The hydrogen bonding which contribute to the formation of ENR-50/Pani.DBSA composites was observed in FT-IR, UV-Visible and DSC. It showed hydrogen bonding interactions between the epoxy groups in ENR-50 and the amine groups in Pani.DBSA. The morphologies of the prepared materials were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and conductivity measurements revealed that the percolation threshold is at 2.5 w% of Pani.DBSA content. Atomic force microscopy (AFM) micrographs showed that ENR-50 with 5 wt% Pani.DBSA addition has the lowest surface roughness. In addition thermogravimetric analysis indicates improved thermal stability at low Pani.DBSA content. DSC measurements revealed that T-g value increases with increasing Pani.DBSA, indicating that the formation of homogenous composite material. Nano-indentation results show that the hardness (H) and Young's modulus (E-s) increased with higher addition of Pani.DBSA polymer. (C) 2015 Elsevier B.V. All rights reserved.
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