Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds
Liquid butadiene rubber (LqBR) which used as a processing aid play a vital role in the manufacturing of high-performance tire tread compounds. However, the studies on the effect of molecular weight, microstructure, and functionalization of LqBR on the properties of compounds are still insufficient....
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/6/850 |
| _version_ | 1797541873899798528 |
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| author | Donghyuk Kim Byungkyu Ahn Kihyun Kim JongYeop Lee Il Jin Kim Wonho Kim |
| author_facet | Donghyuk Kim Byungkyu Ahn Kihyun Kim JongYeop Lee Il Jin Kim Wonho Kim |
| author_sort | Donghyuk Kim |
| collection | DOAJ |
| description | Liquid butadiene rubber (LqBR) which used as a processing aid play a vital role in the manufacturing of high-performance tire tread compounds. However, the studies on the effect of molecular weight, microstructure, and functionalization of LqBR on the properties of compounds are still insufficient. In this study, non-functionalized and center-functionalized liquid butadiene rubbers (N-LqBR and C-LqBR modified with ethoxysilyl group, respectively) were synthesized with low vinyl content and different molecular weights using anionic polymerization. In addition, LqBR was added to the silica-filled SSBR compounds as an alternative to treated distillate aromatic extract (TDAE) oil, and the effect of molecular weight and functionalization on the properties of the silica-filled SSBR compound was examined. C-LqBR showed a low Payne effect and Mooney viscosity because of improved silica dispersion due to the ethoxysilyl functional group. Furthermore, C-LqBR showed an increased crosslink density, improved mechanical properties, and reduced organic matter extraction compared to the N-LqBR compound. LqBR reduced the glass transition temperature (T<sub>g</sub>) of the compound significantly, thereby improving snow traction and abrasion resistance compared to TDAE oil. Furthermore, the energy loss characteristics revealed that the hysteresis loss attributable to the free chain ends of LqBR was dominant. |
| first_indexed | 2024-03-10T13:22:49Z |
| format | Article |
| id | doaj.art-01f62e0c7b294286890a21a44c191a28 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T13:22:49Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-01f62e0c7b294286890a21a44c191a282023-11-21T09:53:21ZengMDPI AGPolymers2073-43602021-03-0113685010.3390/polym13060850Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica CompoundsDonghyuk Kim0Byungkyu Ahn1Kihyun Kim2JongYeop Lee3Il Jin Kim4Wonho Kim5School of Chemical Engineering, Pusan National University, Busan 46241, KoreaHankook Tire & Technology Co., Ltd., R&D Center, 50 Yuseong-daero 935beon-gil, Yuseong-gu, Daejeon 34127, KoreaHankook Tire & Technology Co., Ltd., R&D Center, 50 Yuseong-daero 935beon-gil, Yuseong-gu, Daejeon 34127, KoreaHankook Tire & Technology Co., Ltd., R&D Center, 50 Yuseong-daero 935beon-gil, Yuseong-gu, Daejeon 34127, KoreaHankook Tire & Technology Co., Ltd., 286 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13494, KoreaSchool of Chemical Engineering, Pusan National University, Busan 46241, KoreaLiquid butadiene rubber (LqBR) which used as a processing aid play a vital role in the manufacturing of high-performance tire tread compounds. However, the studies on the effect of molecular weight, microstructure, and functionalization of LqBR on the properties of compounds are still insufficient. In this study, non-functionalized and center-functionalized liquid butadiene rubbers (N-LqBR and C-LqBR modified with ethoxysilyl group, respectively) were synthesized with low vinyl content and different molecular weights using anionic polymerization. In addition, LqBR was added to the silica-filled SSBR compounds as an alternative to treated distillate aromatic extract (TDAE) oil, and the effect of molecular weight and functionalization on the properties of the silica-filled SSBR compound was examined. C-LqBR showed a low Payne effect and Mooney viscosity because of improved silica dispersion due to the ethoxysilyl functional group. Furthermore, C-LqBR showed an increased crosslink density, improved mechanical properties, and reduced organic matter extraction compared to the N-LqBR compound. LqBR reduced the glass transition temperature (T<sub>g</sub>) of the compound significantly, thereby improving snow traction and abrasion resistance compared to TDAE oil. Furthermore, the energy loss characteristics revealed that the hysteresis loss attributable to the free chain ends of LqBR was dominant.https://www.mdpi.com/2073-4360/13/6/850SSBRliquid butadiene rubbersilica-filled compoundanionic polymerizationrubber compounding |
| spellingShingle | Donghyuk Kim Byungkyu Ahn Kihyun Kim JongYeop Lee Il Jin Kim Wonho Kim Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds Polymers SSBR liquid butadiene rubber silica-filled compound anionic polymerization rubber compounding |
| title | Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds |
| title_full | Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds |
| title_fullStr | Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds |
| title_full_unstemmed | Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds |
| title_short | Effects of Molecular Weight of Functionalized Liquid Butadiene Rubber as a Processing Aid on the Properties of SSBR/Silica Compounds |
| title_sort | effects of molecular weight of functionalized liquid butadiene rubber as a processing aid on the properties of ssbr silica compounds |
| topic | SSBR liquid butadiene rubber silica-filled compound anionic polymerization rubber compounding |
| url | https://www.mdpi.com/2073-4360/13/6/850 |
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