Novel bio-based rubber oil from epoxidized and acetylated cashew nut shell liquid (CNSL)

Name: Idris Kalkan

LCSH: Wood oil

LCSH: Cashew nut -- Utilization

ThaSH: เมล็ดมะม่วงหิมพานต์ -- การใช้ประโยชน์

ThaSH: น้ำมันยาง

Abstract: For sustainable economy, novel renewable bio-based additives, i.e., epoxidized and acylated cashew nut shell liquids (CNSLs) derived from agricultural waste have been carried out. Cardanol, one of main components of CNSLs, was used as the model. Epoxidized cardanol (EC) was carried out via peracetic acid formed in-situ in the presence of an ion exchange resin as a catalyst. Acetylated cardanol (AC) was achieved by solvent free mechanism and zinc oxide as catalyst. The oil was successfully modified as the molecular structures of EC and AC were confirmed by FTIR, ¹H NMR and iodine value test. Feasibilities of using the modified oils as rubber processing oil in CR, NR and CR/NR (50:50) blend were studied and compared with commercial petroleum-based naphthenic oil. Compounded rubber samples were tested for Mooney viscosity, cure characteristics, mechanical and physical properties. Rubbers with cardanol and its derivatives showed some improvements in torque results, C and especially AC indicated lower cure times and higher cure efficiencies, whereas EC showed longer cure times and lower cure efficiencies when compared to naphthenic oil. Rubbers compounded with four different oils did not reveal significant differences according to bleeding, swelling, hardness and tensile test, however, AC indicated superior antiaging properties based on shore A hardness, tensile strength, M100 and elongation at break results before and after accelerated aging process. As a result C and AC, especially AC, have great potential to replace naphthenic oil as rubber oil, on the other hand, EC is not recommended due to cure test results.

King Mongkut's Institute of Technology Ladkrabang. Central Library

Address: BANGKOK

Email: Lifelong@kmitl.ac.th

Name: Ittipol Jangchud

Role: Thesis Advisor

Email : ittipol.ja@kmitl.ac.th

Created: 2020

Modified: 2564-07-29

Issued: 2021-07-29

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Polymer Technology

Grantor: King Mongkut's Institute of Technology Ladkrabang

©copyrights King Mongkut's Institute of Technology Ladkrabang

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