Novel bio-based rubber oil from epoxidized and acetylated cashew nutshell liquid

Name: Kalkan, Idris

Organization : King Mongkut's Institute of Technology Ladkrabang. Faculty of Science

Name: Watthana Klairutsamme

Organization : King Mongkut's Institute of Technology Ladkrabang. Faculty of Science

Name: Ittipol Jangchud

Organization : King Mongkut's Institute of Technology Ladkrabang. Faculty of Science

Email : ittipol.ja@kmitl.ac.th

ThaSH: Cashew nutshell liquids -- Mechanical properties

ThaSH: Oxidation

ThaSH: Acetylation

ThaSH: Viscosity

Abstract: In this work, epoxidation and acetylation of Cashew nutshell liquids (CNSLs), a bio-based additive derived from agricultural waste, was carried out. Cardanol, one of main components of CNSLs, was used as model compound for modification. Epoxidized cardanol (EC) was carried out via peracetic acid formed in-situ, in the presence of ion-exchange resin as catalyst. Acetylated cardanol (AC) was achieved by solvent free mechanism and zinc oxide as catalyst. EC and AC were characterized by FTIR and 1HNMR tests. Vanished peaks for unsaturated alkyl chain and appeared peaks for epoxy groups proved conversion of unsaturation into epoxy groups during epoxidation. The presence of peaks for C=O group and disappearance of peaks for OH group confirmed acetylation. Modified oils as rubber processing oil in CR/NR (50:50) blend were comparatively studied with commercial petroleum-based oil. Rubber samples were tested for Mooney viscosity, cure characteristics, mechanical and physical properties. Rubber samples with AC showed unchanged cure characteristics, but improvement in heat deterioration. Rubber samples with EC revealed better properties, such as, %elongation, hardness, modulus and heat deterioration, but longer cure time compared to rubbers with commercial petroleum-based oil. In conclusion, the modified oils have high potentials to be used commercially in rubber industry.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2020

Modified: 2024-10-21

Issued: 2024-10-21

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BibliograpyCitation : In the Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn in association, Thammasat University Faculty of Science and Technology. The Pure and Applied Chemistry International Conference 2020 (PACCON 2020) (PC230-235). Bangkok : Thammasat University

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