Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties

The present work aims to study the effect of glycerol as a replacement for mineral oils in natural rubber (NR) composites to obtain suitable properties via cure characteristics, mechanical properties, and thermal stability. Glycerol was used at a 5 phr rate in the compound with carbon black as a rei...

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Main Authors: Weerawut Naebpetch, Sutiwat Thumrat, Indriasari, Yeampon Nakaramontri, Suppachai Sattayanurak
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Polymers
Subjects:
Online Access:https://www.mdpi.com/2073-4360/15/17/3599
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author Weerawut Naebpetch
Sutiwat Thumrat
Indriasari
Yeampon Nakaramontri
Suppachai Sattayanurak
author_facet Weerawut Naebpetch
Sutiwat Thumrat
Indriasari
Yeampon Nakaramontri
Suppachai Sattayanurak
author_sort Weerawut Naebpetch
collection DOAJ
description The present work aims to study the effect of glycerol as a replacement for mineral oils in natural rubber (NR) composites to obtain suitable properties via cure characteristics, mechanical properties, and thermal stability. Glycerol was used at a 5 phr rate in the compound with carbon black as a reinforcing filler and was compared to mineral processing oils such as aromatic oil, treated distillate aromatic extracted oil, and paraffinic oil. Compared to the other oils, glycerol exhibits better maximum torque and torque differences. Also, a shorter scorch time, cure time, and a higher cure rate index of the compounds were observed. However, although the received mechanical properties, including tensile strength, elongation at break, and compression set of the vulcanized rubber using glycerol showed slightly lower values than the others, the 100% and 300% moduli, as well as the hardness of the composites filled with glycerol, exhibit better values relative to the other commercial oils. These findings demonstrate that glycerol overall presents a good balance of properties, making it beneficial to use glycerol as a substitute for mineral oil in tire, shoe sole, and rubber stopper applications.
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spelling doaj.art-1bc9e0f7261d443da00580c99d2df4982023-11-19T08:43:52ZengMDPI AGPolymers2073-43602023-08-011517359910.3390/polym15173599Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging PropertiesWeerawut Naebpetch0Sutiwat Thumrat1Indriasari2Yeampon Nakaramontri3Suppachai Sattayanurak4Department of Rubber and Polymer Engineering, Faculty of Engineering, Thaksin University, Phatthalung Campus, Phatthalung 93210, ThailandDepartment of Rubber and Polymer Engineering, Faculty of Engineering, Thaksin University, Phatthalung Campus, Phatthalung 93210, ThailandAdvanced Material Research Center, National Research and Innovation Agency (BRIN), KST B.J. Habibie, Serpong 15314, IndonesiaSustainable Polymer & Innovative Composite Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Rubber and Polymer Engineering, Faculty of Engineering, Thaksin University, Phatthalung Campus, Phatthalung 93210, ThailandThe present work aims to study the effect of glycerol as a replacement for mineral oils in natural rubber (NR) composites to obtain suitable properties via cure characteristics, mechanical properties, and thermal stability. Glycerol was used at a 5 phr rate in the compound with carbon black as a reinforcing filler and was compared to mineral processing oils such as aromatic oil, treated distillate aromatic extracted oil, and paraffinic oil. Compared to the other oils, glycerol exhibits better maximum torque and torque differences. Also, a shorter scorch time, cure time, and a higher cure rate index of the compounds were observed. However, although the received mechanical properties, including tensile strength, elongation at break, and compression set of the vulcanized rubber using glycerol showed slightly lower values than the others, the 100% and 300% moduli, as well as the hardness of the composites filled with glycerol, exhibit better values relative to the other commercial oils. These findings demonstrate that glycerol overall presents a good balance of properties, making it beneficial to use glycerol as a substitute for mineral oil in tire, shoe sole, and rubber stopper applications.https://www.mdpi.com/2073-4360/15/17/3599glycerolnatural rubberprocessing oilcarbon blackmechanical properties
spellingShingle Weerawut Naebpetch
Sutiwat Thumrat
Indriasari
Yeampon Nakaramontri
Suppachai Sattayanurak
Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
Polymers
glycerol
natural rubber
processing oil
carbon black
mechanical properties
title Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
title_full Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
title_fullStr Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
title_full_unstemmed Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
title_short Effect of Glycerol as Processing Oil in Natural Rubber/Carbon Black Composites: Processing, Mechanical, and Thermal Aging Properties
title_sort effect of glycerol as processing oil in natural rubber carbon black composites processing mechanical and thermal aging properties
topic glycerol
natural rubber
processing oil
carbon black
mechanical properties
url https://www.mdpi.com/2073-4360/15/17/3599
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AT sutiwatthumrat effectofglycerolasprocessingoilinnaturalrubbercarbonblackcompositesprocessingmechanicalandthermalagingproperties
AT indriasari effectofglycerolasprocessingoilinnaturalrubbercarbonblackcompositesprocessingmechanicalandthermalagingproperties
AT yeamponnakaramontri effectofglycerolasprocessingoilinnaturalrubbercarbonblackcompositesprocessingmechanicalandthermalagingproperties
AT suppachaisattayanurak effectofglycerolasprocessingoilinnaturalrubbercarbonblackcompositesprocessingmechanicalandthermalagingproperties