POLYMER COMPOSITES
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2013
·Vol. 34
·期 11
·1856-1862
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IF 1.482
Lili Guo,Hangxin Lei,Jing Zheng,Guangsu Huang,Guangxian Li
Nanosilica was successfully grafted with antioxidant intermediate p -aminodiphenylamine (RT) via silane coupling agent 3-glycidoxypropyltrimethoxysilane (KH-560), and the structures of product RT-silica were confirmed by Fourier transform infrared spectra (FTIR) and other methods. RT-silica exhibited excellent performance in many aspects. Scanning electron microscopy (SEM) observation shows that the RT-silica has a better dispersion state and compatibility with the SBR matrix. The tests of oxidation induction time (OIT) have revealed that RT-silica possesses better antioxidative and antimigratory efficiency than that of the corresponding low molecular counterpart. Degradation activation energy ( E α ) of SBR composites were evaluated by the Kissinger–Akahira–Sunose (KAS) method and the results showed that SBR composites with RT-silica have better thermal stability properties. POLYM. COMPOS., 34:1856–1862, 2013. © 2013 Society of Plastics Engineers
研究领域:
材料科学
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高分子化学
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高影响因子
Sustainable Materials and Technologies
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2024
·
IF 8.6
Sohail Yasin,Munir Hussain,Azim Uddin,Qiang Zheng,Jianfeng Shi,Yihu Song
Plastics are generally nonrecyclable materials relative to their circular production. Recycling may reduce greenhouse gases and promote decarbonization goal of plastics, while restricted due to strong incompatibility for binary or ternary polymers waste. Sustainability of sole type is frequently idealized with life cycle assessment (LCA) studies and often neglect the release of wear particulate matter or microplastics (MPs) and fail to provide alternate end-of-life (EoL) recycling solutions. Thus, this study offers recycling of binary polymer product, polyethylene terephthalate/styrene-butadiene rubber (PET/SBR) carpet and sustainability assessment through LCA with quantification of MPs accumulation. A functional unit for PET/SBR carpet in 3.5 kg weight with use phase cleaning (vacuum and detergent cleaning) for 10 years' service life was considered to simulate realistic deposition of MPs. Recycling of binary polymer carpet is utilized in high-performance rubber microfibrillar composites (MFCs), using maleic anhydride (MA) or ionic liquid (IL) compatibilizer , as a potential EoL alternative. The LCA results indicate that the use phase is the highest contributor to the environmental impacts, considering the carpet being detergent washed. Smaller MPs accumulated more in the carpet when vacuum cleaned, attracting other MPs presumably particles being statically charged. Addition of IL in recycling of binary polymer carpet not only improves the curing kinetics of MFCs but also enhances the dielectric and rheological viscoelastic behaviors compared to the conventional MA compatibilizer.
研究领域:
材料科学
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环境科学
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2023
·Vol. 140
·期 44
·e54607
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IF 3
Zhiping Zhao,Xiangjun Gong,Changmei Sun,Ying Zhang,Rongjun Qu,Ying Wang
In this article, Styrene butadiene rubber/poly-p-phenylene terephthamide (SBR/PPTA) nanocomposite was synthesized via in-situ interfacial polycondensation of para-phenylenediamine (PPD) and para-benzoyl chloride (TPC) between the interface of SBR-containing cyclohexanone (CYC) solution and water. Fourier transform-infrared spectroscopy (FTIR) and x-ray diffraction (XRD) confirmed the formation of PPTA in SBR matrix. Transmission electron microscopy (TEM) indicated PPTA nanosheets were uniformly dispersed in the SBR matrix. The thermal stability and mechanical properties of SBR/PPTA nanocomposite were also studied. Results showed that PPTA significantly improved the mechanical properties and thermal stability of SBR. The tensile strength and 200% tensile stress of SBR/PPTA-3 were 120.9% and 150.8% higher than those of Pure rubber, respectively. The tensile strength and elongation at break of SBR/ PPTA-3-30% were 187.2% and 36.9% higher than those of Pure rubber, enabling promising applications of this new composite rubber material.
研究领域:
材料科学
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高分子化学
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高影响因子
POLYMER COMPOSITES
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2014
·Vol. 37
·期 2
·446-454
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IF 1.455
Wenjiang Feng,Chengfeng Zhang,Baochun Guo
Separating the effects of interfacial interaction on rubber performance from those of the dispersion state remains challenging, as an improvement in both properties is often observed upon addition of an interfacial modifier. In this work, 4-(chloromethyl) phenyltrimethoxysilane, a silane-bearing benzyl chloride, is used as the model substance to modify a SBR/silica composite. Although an improvement in dispersion, as indicated by morphological observations and rheological measurements, is achieved, the dynamic property indicated by the mechanical loss and heat build-up, deteriorates. Such outcomes are attributed to the inferior interfacial interaction and decreased crosslink density. As a comparison, the counterpart modified by bis(triethoxysilylpropyl) tetrasulfide possesses a superior dynamic property which is attributed to the simultaneous improvements in the dispersion and interfacial interaction. This work provides new insights for the design of high performance rubbers used under dynamic circumstances. POLYM. COMPOS., 37:446–454, 2016. © 2014 Society of Plastics Engineers
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2015
·Vol. 26
·期 8
·953-959
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IF 1.757
Shuting Wang,Lan Cen,Qihao Wu
Maleated glycidyl 3-pentadecenyl phenyl ether with styrene (MGS) was synthesized from glycidyl 3-pentadecenyl phenyl ether (GPPE), maleic anhydride (MAH) and styrene (St) in the presence of AIBN initiator at 80°C, and then the resultant MGS was applied as a compatibilizer to prepare SBR/silica composites. Meanwhile, the commercial compatibilizer bis-(triethoxysilylpropyl) tetrasulfide (named Si69) added into composite was also prepared for comparison purpose. The synthetic MGS structure was characterized by GPC and FTIR, and SBR/silica compounds with different compatibilizer were analyzed using RPA, DMA and so on. The results showed that M̄n and M̄w of MGS were 19,538 g/mol and 23,790 g/mol, respectively. The curing time of compounds with MGS increased, whereas the maximum and minimum torques decreased. The addition of MGS decreased Payne effect of SBR/silica compounds, which implied an improvement of silica dispersion in the compounds. Bound rubber content of compound with MGS was about 1.7 times higher than the absence and 1.5 times higher than that with Si69. The tensile strength of the composites was improved by increasing compatibilizer loading, and the optimum value was observed at 6 phr of MGS. Meanwhile the use of MGS can improve the anti-aging property of composite. According to DMA, the tanδ value at 0°C of composite with MGS was higher than composite without compatibilizer suggesting that MGS can improve the wet skid resistance of composite. The SEM analysis revealed that introduction of MGS enhanced the compatibility between SBR and silica. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
高分子化学
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橡胶复合材料
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材料界面科学
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功能高分子
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聚合物改性
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DOI
高影响因子
BIORESOURCE TECHNOLOGY
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2023
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IF 11.4
Mingxing Hu,Hanmin Zhang,Yu Tian
An innovative partial nitrification and short-cut sulfur autotrophic denitrification (PN-SSAD, NH 4 + -N → NO 2 − -N → N 2 ) coupled system in a single-stage SBR was proposed to treat low C/N wastewater with low material and energy consumption. Nearly 50 % alkalinity consumption and 40 % sulfate production were reduced in S 0 -SSAD compared with S 0 -SAD, whereas the autotrophic denitrification rate was increased by 65 %. In S 0 -PN-SSAD, the TN removal efficiency reached almost 99 % without additional organic carbon. Furthermore, pyrite (FeS 2 ) rather than S 0 served as the electron donor to optimize the PN-SSAD process. The practical sulfate production in S 0 -PN-SSAD and FeS 2 -PN-SSAD were about 38 % and 52 % lower than complete nitrification and sulfur autotrophic denitrification (CN-SAD), respectively. Thiobacillus was the major autotrophic denitrification bacteria in S 0 -PN-SSAD (34.47 %) and FeS 2 -PN-SSAD (14.88 %). Nitrosomonas and Thiobacillus played a synergistic effect in the coupled system. FeS 2 -PN-SSAD is expected as an alternative technology for nitrification and heterotrophic denitrification (HD) in treating low C/N wastewater.
研究领域:
环境工程
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微生物学
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水处理技术
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DOI
PubMed
高影响因子
ACS Applied Polymer Materials
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2023
·
IF 5
Xiaojiang Xie,Lihao Wu,Jizhong Huang,Jingwei He,Fang Liu
In this work, an eco-friendly chitosan-based biomass macromolecular antioxidant containing double bonds and polyphenol structure (COS-UC-GA), prepared by coupling 10-undecenoyl chloride (UC) and gallic acid (GA) onto chitosan (COS), was employed as an antioxidant for styrene–butadiene rubber (SBR)/silica composites. Its effects on the anti-aging properties of SBR/silica composites were systematically explored. The corresponding small molecular organic compound gallic acid (GA), commercial antioxidant butylated hydroxytoluene (BHT), and N-isopropyl-N′-pheny-p-phenyl-ene diamine (4010NA) were used as control samples. The results of the accelerated thermal-oxidative aging test, crosslinking density test, and thermogravimetric (TG) test demonstrated that the chitosan-based biomass macromolecular antioxidant COS-UC-GA can significantly enhance the anti-aging properties, thermal stability, and apparent activation energy (E) of SBR/silica composites. Moreover, the results of the extraction resistance test indicated that the chitosan-based biomass macromolecular antioxidant COS-UC-GA can present better migration resistance and extraction resistance in SBR/silica composites compared to the corresponding small molecular organic compound GA, commercial antioxidant BHT, and 4010NA. The superior antioxidative properties of the chitosan-based biomass macromolecular antioxidant COS-UC-GA for SBR/silica composites originated from the synergistic antioxidative effects between amine or amide groups of COS-UC-GA and polyphenol structure as well as the outstanding migration resistance and volatilization resistance of COS-UC-GA. The eco-friendly chitosan-based biomass macromolecular antioxidant COS-UC-GA can be used as a promising green candidate in the rubber industry to replace traditional small molecular antioxidants.
研究领域:
材料科学
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聚合物化学
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环境科学
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橡胶技术
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
·
IF 12.2
Haiming Wang,Zhuanxi Luo,Anteng Dai,Xu Liao,Changzhou Yan,Ruilian Yu,Shufeng Zhou,Baoshan Xing
Tire wear particles (TWPs) are garnering increasing attention due to their potential adverse environmental impacts. However, precisely ascertaining TWPs content is challenging due to the complexity and variability of the tire components used in the environment, indicating that more reliable methods to accurately determine TWPs are necessary. In this study, driving school grounds were used as a case study to ascertain an appropriate and reliable method to determine TWPs levels based on a comprehensive comparison between different analytical results using styrene butadiene rubber (SBR), N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD), and zinc (Zn) as analytical markers. Thermogravimetric analysis-Gas chromatography mass spectrometry (TGA-GC-MS) method reliability using SBR was verified and applied to measure TWPs levels on driving school grounds. By reliably converting SBR content to TWPs content, the average TWPs content on driving school grounds was measured at 190.13 ± 101.89 mg/g. The highest TWPs content was 281.83 ± 171.44 mg/g under the reverse stall parking driving programs, while the slope start and stop driving programs was lower at 208.36 ± 124.11 mg/g. Our findings highlight the importance of accurately determining TWPs content within specific environments while comprehensively exploring associated patterns of change to better understand the environmental risks of TWPs.
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
RSC Advances
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2024
·Vol. 14
·期 28
·19903-19911
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IF 3.9
Dongliang Liu,Detao Kong,Qinghua Yang,Yaolong He,Hongjiu Hu
Aqueous emulsifiable diphenylmethane diisocyanate (EMDI) can form strong chemical bonds with aqueous adhesives due to the large number of isocyanate (–NCO) groups, which can enhance the mechanical performance of the adhesives. Currently, sodium carboxymethyl cellulose (CMC)–styrene butadiene rubber (SBR) emulsion aqueous bonding agents are widely used in the preparation of anode materials for lithium-ion batteries (LIBs). In this study, EMDI was added to a porous silicon–carbon composite electrode prepared from CMC–SBR, and the evolution of the mechanical properties of the electrode with the EMDI content was first investigated via quasi-static uniaxial tensile and interfacial strength tests. Subsequently, the effect of the EMDI content on the electrochemical properties of the electrodes was analysed by electrochemical impedance spectroscopy (EIS) and constant-current (CC) charge/discharge performance tests. Finally, material characterisation of the electrodes was carried out by Fourier transform infrared (FTIR) spectroscopy and specific surface area (Brunauer–Emmett–Teller (BET)) analysis. The results show that the addition of EMDI with a mass ratio of 10–20% to the CMC–SBR binder can enhance the mechanical performance of the active layer and the interfacial performance between the active layer and the current collector of the silicon–carbon composite electrode; simultaneously, EMDI can significantly reduce the electrochemical impedance of the electrode material and improve the capacity retention of the electrode. This study provides a new solution for modifying silicon–carbon composite electrodes and promotes the development of high-performance silicon–carbon electrodes.
研究领域:
材料科学
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电化学
·
能源存储
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DOI
PubMed
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
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2026
·
IF 4
Shuyan Yang,Ziyang Deng,Junyu Tian
Rubber materials need to be reinforced by inorganic fillers due to the low mechanical properties. However, the incorporation of fillers would narrow the damping temperature range of rubber composites because of the adsorption effect of fillers. In this work, fumed silica was modified using silane coupling agent KH550 (denoted as SiO 2 -g), and then was mixed with styrene-butadiene rubber (SBR) and Ethyl linoleate (EL) to prepare rubber composites. Under the vulcanization process, EL can not only graft onto the molecular chains of SBR with the assistance of dicumyl peroxide (DCP), but also was capable of forming hydrogen bonds with SiO 2 -g. As a result, the SBR/SiO 2 -g/8EL composite maintained a high tensile strength of 23.75 MPa, and its damping temperature range (with a loss factor tan δ > 0.1) reached −60°C to 90°C. In contrast, the SBR/SiO 2 -g composite only exhibited a tensile strength of 22.38 MPa and a damping temperature range of −40°C to 5°C under the same tan δ threshold. This work provides a new perspective for resolving the dilemma of rubber/inorganic filler composites with high mechanical strength and a wide damping temperature range. Highlights The ethyl linoleate (EL) can graft to the SBR molecular chains. Hydrogen bonds have been introduced into SBR/SiO 2 -g/EL composites. SBR/SiO 2 -g/EL composites possess a wide damping temperature range (tan δ > 0.1). The wide damping temperature range is due to the formation of hydrogen bonds.
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高影响因子
Gels
·
2026
·Vol. 12
·期 9
·770
·
IF 6.4
Zhimin Liu,Chenxi Nie,Fengfeng Xiao,Mengyuan Chen,Ming Liu,Qi Feng,Changtao Yue
Lost circulation of oil-based drilling fluids (OBDFs) in deep, fractured formations remains a critical challenge, primarily due to the poor retention and low pressure-bearing capacity of conventional materials on oil-wet rock surfaces. To bridge this gap, this study reports the development and field application of a novel thermo-responsive gel (SBR−g−PSA). Synthesized by grafting highly lipophilic stearyl acrylate (SA) onto a flexible styrene–butadiene rubber (SBR) backbone, the microgel exploits a UCST-like (Upper Critical Solution Temperature) phase transition behavior. At surface temperatures, rigid styrene microdomains act as physical crosslinks, maintaining the particles in a compact, highly dispersible state. Under elevated downhole temperatures (120–180 °C), these microdomains relax, triggering the massive unfolding and physical entanglement of the octadecyl side chains. This in situ topological evolution generates a resilient three-dimensional network with a high thermal degradation temperature of 346.6 °C. Rheological and macroscopic sealing evaluations demonstrate that the gel effectively adapts to OBDFs, securely sealing 1–1.5 mm fractures and limiting fluid loss to within 5 mL under a 4 MPa differential pressure. Successful field application in the deep well Dashen-X reduced severe fluid leakage from 2.42 m3/h to zero. This intelligent thermo-responsive platform offers a robust, high-performance technological solution for precise lost circulation control in deep oil and gas exploration.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125429
·
IF 7.5
Fu Wei,Quanli Chen,Xilong Liu,Xiaozhuo Li,Chenhui Zhang,Yuyang Zhang,Qian Zhang
8 mg·L⁻¹ SMX is the threshold, beyond which TN removal severely deteriorates (<30%). • Inhibition stems from AMO/NR activity loss, causing gene-function decoupling. • Thauera abnormally surges under SMX stress but fails to execute actual N-removal. • Microbes shift from N-removal to survival defense, enriching sul1/sul2 ARGs. • SMX activates ABC transporters and quorum sensing for resistance and survival. To investigate the microscale inhibition mechanism of sulfamethoxazole (SMX) on nitrogen removal in Aerobic granular sludge–sequencing batch reactor(AGS–SBRs), system responses were evaluated under gradient SMX concentrations (0–20 mg·L⁻¹). Pollutant sensitivity followed TN > NH₄⁺–N > COD, exhibiting distinct disruption thresholds. Specifically, 8 mg·L⁻¹ emerged as a critical threshold for nitrification inhibition, where NH₄⁺-N removal decreased to 89.88%. As stress intensified to 10 mg·L⁻¹ , TN removal severely deteriorated to below 30%, marking the collapse of denitrification. LC-MS and metagenomic analyses revealed that at low concentrations, SMX was detoxified via S-N bond cleavage and hydroxylation, followed by high-mass coupling polymerization and β-oxidation-driven complete mineralization. However, at 8 mg·L⁻¹ , an enzymatic degradation bottleneck emerged. This accumulation of SMX served as the turning point for microbial succession, significantly inhibiting Nitrosomonas while causing an abnormal abundance surge of Thauera . Under this stress, although nitrogen transformation genes remained abundant, AMO and NR enzymatic activities were suppressed by 12.59% and 33.42%, causing severe gene function decoupling. Consequently, the microbial strategy shifted fundamentally from metabolic degradation to survival defense, evidenced by the marked enrichment of sul1 and sul2 resistance genes, alongside Thauera’s peak contributions to ABC transporters and quorum sensing. These findings provide multidimensional insights for threshold regulation in antibiotic-containing wastewater treatment. Download: Download high-res image (243KB) Download: Download full-size image
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高影响因子
危险品化学品经营许可证（带存储）