Evaluation of storage stability of styrene–butadiene–styrene block copolymer-modified asphalt via electrochemical analysis

A styrene-butadiene-styrene triblock copolymer (SBS) was grafted with an unsaturated polar monomer (monomer A) composed of maleic anhydride (MAH) and methoxy polyethylene (MPEG) via a ring-opening reaction after epoxidizing styrene-butadiene-styrene triblock copolymer (ESBS). The microscopic changes of SBS before and after grafting has been characterized with Fourier transform infrared spectrum (FT-IR), X-ray photoelectron spectroscopy (XPS) and gel permeation chromatography (GPC). The results revealed that the monomer A was successfully grafted on SBS backbone, and the maximum graft ratio (GR) was 20.32%. To verify the compatibility between SBS and asphalt, solubility parameters and surface free energy (SFE) of SBS, grafted SBS and asphalt were measured. It was found that the solubility parameter and SFE of grafted SBS were closer to asphalt compared with SBS. It also has been confirmed from storage stability that the temperature susceptibility of grafted SBS modified asphalt was reduced in compare with SBS modified asphalt binder. As consequence, the use of grafted copolymer can be considered a suitable alternative for modification of asphalt binder in pavement.

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Improving the aging resistance of styrene-butadiene-styrene tri-block copolymer and application in polymer-modified asphalt

Journal of Applied Polymer Science ◽

10.1002/app.31458 ◽

2009 ◽

pp. n/a-n/a ◽

Cited By ~ 7

Author(s):

Yintao Li ◽

Linfan Li ◽

Yan Zhang ◽

Sufang Zhao ◽

Leidong Xie ◽

...

Keyword(s):

Block Copolymer ◽

Modified Asphalt ◽

Aging Resistance ◽

Styrene Butadiene Styrene ◽

Polymer Modified Asphalt ◽

Styrene Butadiene ◽

Butadiene Styrene

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Improving the aging resistance of styrene–butadiene–styrene tri-block copolymer modified asphalt by addition of antioxidants

Polymer Degradation and Stability ◽

10.1016/j.polymdegradstab.2005.06.009 ◽

2006 ◽

Vol 91 (4) ◽

pp. 795-804 ◽

Cited By ~ 144

Author(s):

Chunfa Ouyang ◽

Shifeng Wang ◽

Yong Zhang ◽

Yinxi Zhang

Keyword(s):

Block Copolymer ◽

Modified Asphalt ◽

Aging Resistance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

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Study on Performance of SBS Modified Asphalt

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.753-755.715 ◽

2013 ◽

Vol 753-755 ◽

pp. 715-718

Author(s):

Xiu Hua Yang

Keyword(s):

Block Copolymer ◽

Low Temperature ◽

Modified Asphalt ◽

Temperature Performance ◽

Styrene Butadiene Styrene ◽

Low Temperature Performance ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

Butadiene Styrene

SBS is a styrene - butadiene - styrene block copolymer, the addition of SBS of high and low temperature performance and road can be very good to improve the performance of asphalt. This paper studied the performance of the modified asphalt on the content of modifier.

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Enhanced Performance of LDPE/SBS Blend Modified Asphalt through Dynamic Vulcanization

Polymers and Polymer Composites ◽

10.1177/096739110201000603 ◽

2002 ◽

Vol 10 (6) ◽

pp. 433-440 ◽

Cited By ~ 1

Author(s):

Guangtao Gao ◽

Yong Zhang ◽

Yinxi Zhang ◽

Kang Sun

Keyword(s):

Triblock Copolymer ◽

Storage Stability ◽

Dynamic Shear ◽

Dynamic Vulcanization ◽

Rotational Viscometer ◽

Modified Asphalt ◽

Before And After ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

A blend of a Low-Density Polyethylene (LDPE) and a Styrene-Butadiene-Styrene triblock copolymer (SBS) was mixed with an asphalt, and a storage-stable modified asphalt was prepared by dynamic vulcanization. The vulcanization characteristics of this LDPE/SBS blend-modified asphalt were studied using a strain-controlled rheometer. The vulcanization of the SBS in the blend-modified asphalt resulted in a marked increase in the torque. In addition, the physical properties of the LDPE/SBS blend-modified asphalt containing even a small quantity of sulfur were improved compared to the modified asphalt without sulfur. The storage stability of the LDPE/SBS blend-modified asphalt was also improved by the addition of sulfur. The rheological properties of the LDPE/SBS blend-modified asphalt before and after adding sulfur were characterized using a dynamic shear rheometer and a rotational viscometer.

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Influence of Compound Modification of Oil Sands De-Oiled Asphalt and Polyphosphoric Acid on High- and Low-Temperature Performance of Styrene-Butadiene-Styrene-Modified Asphalt

Materials ◽

10.3390/ma14040797 ◽

2021 ◽

Vol 14 (4) ◽

pp. 797

Author(s):

Xiaoguang Pei ◽

Weiyu Fan

Keyword(s):

Low Temperature ◽

Oil Sands ◽

Polyphosphoric Acid ◽

Storage Stability ◽

Modified Asphalt ◽

Styrene Butadiene Styrene ◽

Modified Binder ◽

Styrene Butadiene ◽

Compound Modification ◽

Butadiene Styrene

Oil sands de-oiled asphalt (OSDOA) has become a bottleneck for refineries due to its enormous production and huge landfill costs. Applying OSDOA as a modifier is an effective way to reduce environmental pollution and disposal cost. In this study, the influences of OSDOA and polyphosphoric acid (PPA) compound modification on styrene-butadiene-styrene (SBS)-modified binder were investigated. The high-temperature rutting resistance, low-temperature anti-crack performance and fatigue resistance were obtained by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) test. Storage stability and microstructure were also investigated by storage test and Fourier-transform infrared (FTIR) spectroscopy. The results demonstrated that the compound modification of OSDOA/PPA dramatically enhanced the deformation resistance of SBS-modified binder and reduced its low-temperature cracking resistance. The anti-fatigue performance was also decreased. Moreover, the combined effect of OSDOA and PPA could produce composite modified asphalt with excellent storage stability, which was verified by desirable fluorescence images. Furthermore, both physical and chemical interactions coexisted during the OSDOA/PPA compound modification process. Consequently, the optimal doses of OSDOA and PPA were determined to be 10 wt% and 1.0 wt%, considering of the balance between high- and low-temperature characteristics and storage stability of composite modified asphalt.

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TUNING PROPERTIES AND MORPHOLOGY IN HIGH VINYL CONTENT SBS BLOCK COPOLYMER, A THERMOPLASTIC ELASTOMER VIA THIOL-ENE MODIFICATION

Rubber Chemistry and Technology ◽

10.5254/rct.17.83761 ◽

2017 ◽

Vol 90 (3) ◽

pp. 550-561 ◽

Cited By ~ 2

Author(s):

Prithwiraj Mandal ◽

Siva Ponnupandian ◽

Soumyadip Choudhury ◽

Nikhil K. Singha

Keyword(s):

Block Copolymer ◽

Thermoplastic Elastomer ◽

Atomic Force Microscopy Analysis ◽

Ene Reaction ◽

Force Microscopy ◽

Atomic Force ◽

Microscopy Analysis ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

ABSTRACT Thiol-ene modification of high vinyl content thermoplastic elastomeric styrene butadiene styrene (SBS) block copolymer (BCP) was carried out using different thiolating agents in toluene at 70 °C. 1H NMR analysis confirmed the participation of vinyl double bond in the thiol-ene modification reaction of SBS. Surface morphology of the block copolymers evaluated by atomic force microscopy analysis showed higher roughness after the thiol-ene reaction. The thiol-modified SBS block copolymer showed better adhesion strength and oil resistance properties than the pristine SBS.

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Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Polymers ◽

10.3390/polym13142249 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2249

Author(s):

Bei Chen ◽

Fuqiang Dong ◽

Xin Yu ◽

Changjiang Zheng

Keyword(s):

Low Temperature ◽

Performance Test ◽

Permanent Deformation ◽

Modified Asphalt ◽

Basic Performance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

And Storage ◽

Butadiene Styrene

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

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