F. Versteeg, Ariq Raharjanto, Daniele Parisi, Francesco Picchioni
{"title":"A novel SBS compound via blending with PS-b-PMBL diblock copolymer for enhanced mechanical properties","authors":"F. Versteeg, Ariq Raharjanto, Daniele Parisi, Francesco Picchioni","doi":"10.5254/rct-d-23-00037","DOIUrl":null,"url":null,"abstract":"\n Styrene-butadiene-styrene (SBS) rubbers stand as one of the most frequently employed thermoplastic elastomers globally. The upper operating temperature of SBS is limited by the glass transition temperature (Tg) of polystyrene, circa 100 °C. This study demonstrates a noteworthy enhancement in the properties of SBSs by introducing a diblock copolymer consisting of styrene and α-methylene-γ- butyrolactone (α-MBL). Polymers derived from α-MBL exhibit exceptional thermal stability, attributable to a glass transition temperature of 195 °C. Notably, α-MBL, also recognized as Tulipalin A, is a bio-renewable compound naturally found in tulips. This investigation encompasses both crosslinked and non-crosslinked blends of poly(styrene)-b-poly(α- methylene-γ-butyrolactone) diblock copolymer (PS-PMBL) and poly(styrene)-b-poly(butadiene)-b- poly(styrene) triblock copolymer, within the 0-20 wt.% PS-PMBL range. Thorough examination employing thermal analysis and linear shear rheology reveals that all blends surpass the properties of their pure SBS counterparts. Specifically, blending at 200 °C induces crosslinking between the polymers, yielding heightened Young’s modulus and complex viscosity, thereby resulting in a robust and rigid material compared to non-crosslinked blends. For non-crosslinked blends, an increase in strength is observed while maintaining commendable rubbery properties. Notably, the non-crosslinked blends permit the recycling of components (SBS and PS- PMBL) through the re-dissolving of rubber in tetrahydrofuran (THF). These findings present a promising avenue for the enhancement of rubbers through the incorporation of bio-renewable compounds.","PeriodicalId":21349,"journal":{"name":"Rubber Chemistry and Technology","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rubber Chemistry and Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.5254/rct-d-23-00037","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Styrene-butadiene-styrene (SBS) rubbers stand as one of the most frequently employed thermoplastic elastomers globally. The upper operating temperature of SBS is limited by the glass transition temperature (Tg) of polystyrene, circa 100 °C. This study demonstrates a noteworthy enhancement in the properties of SBSs by introducing a diblock copolymer consisting of styrene and α-methylene-γ- butyrolactone (α-MBL). Polymers derived from α-MBL exhibit exceptional thermal stability, attributable to a glass transition temperature of 195 °C. Notably, α-MBL, also recognized as Tulipalin A, is a bio-renewable compound naturally found in tulips. This investigation encompasses both crosslinked and non-crosslinked blends of poly(styrene)-b-poly(α- methylene-γ-butyrolactone) diblock copolymer (PS-PMBL) and poly(styrene)-b-poly(butadiene)-b- poly(styrene) triblock copolymer, within the 0-20 wt.% PS-PMBL range. Thorough examination employing thermal analysis and linear shear rheology reveals that all blends surpass the properties of their pure SBS counterparts. Specifically, blending at 200 °C induces crosslinking between the polymers, yielding heightened Young’s modulus and complex viscosity, thereby resulting in a robust and rigid material compared to non-crosslinked blends. For non-crosslinked blends, an increase in strength is observed while maintaining commendable rubbery properties. Notably, the non-crosslinked blends permit the recycling of components (SBS and PS- PMBL) through the re-dissolving of rubber in tetrahydrofuran (THF). These findings present a promising avenue for the enhancement of rubbers through the incorporation of bio-renewable compounds.
期刊介绍:
The scope of RC&T covers:
-Chemistry and Properties-
Mechanics-
Materials Science-
Nanocomposites-
Biotechnology-
Rubber Recycling-
Green Technology-
Characterization and Simulation.
Published continuously since 1928, the journal provides the deepest archive of published research in the field. Rubber Chemistry & Technology is read by scientists and engineers in academia, industry and government.