JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Ruijun Zhang,Qiqi He,Junhua Li,Jianhua Qian
Thermoplastic vulcanizates (TPVs) are attracting growing interest for their recyclability, low cost, and ease of processing. While polypropylene-based TPVs are well studied and partly commercialized, polyethylene-based systems remain underexplored. Polypropylene tends to degrade during dynamic vulcanization due to its tertiary carbon atoms, requiring stabilizers and complicating processing. In contrast, polyethylene offers better thermal stability and simpler processing, making it a promising alternative for developing cost-effective and high-performance TPVs. In this study, a series of TPVs based on polyolefin elastomer (POE) and high-density polyethylene (HDPE) were prepared via dynamic vulcanization using 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (DBPH) as a crosslinking agent under optimized conditions. The effects of varying rubber-to-plastic ratios on the mechanical, rheological, and thermal properties were systematically investigated. As the POE content increased, torque and gel content rose, while melting/crystallization temperatures and crystallinity decreased. At a rubber-to-plastic ratio of 80:20, the TPV exhibited the best overall performance, with a tensile strength of 4.8 MPa, elongation at break of 282%, and hysteresis loss of 55%. Rheological measurements revealed strong crosslinked networks and good processability under shear. This study demonstrates the significant influence of rubber-to-plastic ratio on TPV properties and offers a practical route to developing high-performance, polyethylene-based thermoplastic elastomers.
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高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Yi Liu,Xiaoqi Shao,Jing Huang,Hua Li
Marine biofouling has emerged as worldwide serious problems for artificial marine infrastructures. Among the measures taken so far to solve the abovementioned problems, construction of an antifouling layer has been proven to be effective in offering long-term antifouling performances. Antifouling based on the use of biocides is the most important method in modern maritime industries. While tributyltin (TBT)-based self-polishing coatings are being replaced by other biocide-releasing coatings, the environmental toxicity of these compounds is also under scrutiny. Therefore, there is a significant interest in developing non-toxic technologies. Green biocides can also be extracted from many types of organisms including terrestrial plants, sea creatures and bacteria. The capsaicin was extracted from chili pepper. In this study, flame sprayed high density polyethylene (HDPE)–capsaicin composite coatings were developed for marine antifouling applications. Capsaicin powder were fixed by polymer-based substrate and distributed evenly. Antifouling performances of the films were assessed by examining survival and colonization behaviors of E. coli and Bacillus sp. bacteria and Phaeodactylum tricornutum . Antifouling test indicated excellent antibacterial properties of HDPE–capsaicin composite coatings against both gram-negative Escherichia coli and gram-positive marine Bacillus sp. bacteria. Excellent antifouling performances against bacteria and algae of the thermal sprayed composite coatings give clear insight into their potential applications as environmentally friendly antifouling layers in the marine environment.
研究领域:
材料科学
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海洋工程
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环境科学
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表面涂层
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防污技术
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高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2017
·Vol. 55
·期 20
·3404-3412
·
IF 2.952
Yulong Jin,Ning Zhao,Ruihua Cheng,Xuelian He,Zhen Liu,Dalin Dong,Yuezhen Bin,Xiaowei Chen,Liangbin Li,Boping Liu
Bimodal ultra-high-molecular-weight polyethylene (UHMWPE)/high-density polyethylene (HDPE) in-reactor blends (IRBs) are produced by the bimetallic catalysts, which are synthesized through co-supporting silylchromate and vanadium-oxide-based catalysts on silica or alumina, zirconia and titania-modified silica. After support modification, the activities of the catalysts for ethylene polymerization are substantially enhanced. The IRBs produced by the modified catalysts also contain more UHMWPE and low-molecular-weight polyethylene (LMWPE) fractions, and have much broader molecular weight distribution (MWD). The homogeneous nature of the IRBs is preliminarily confirmed by the differential scanning calorimetry melting curves, showing unique melting peak in both nascent and recrystallized states. The rheological results reflect that the viscosity of the IRBs is reduced more or less when compared with UHMWPE. The distinct elastic dominance of the IRBs is also observed, implying the UHMWPE characteristics in the IRBs. In addition, the intimate mixing of the IRBs is further verified by the similar slopes of Han curves for the polyethylene (PE) samples. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 3404–3412
研究领域:
高分子化学
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材料科学
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Xiaolin Zhang,Xing Chang,Jingjing Di,Long Xu,Bin Cai,Maocai Huang
To maximize the utilization of waste laser printed paper fiber (WLPF), WLPF was used as the organic reinforcing phase, high-density polyethylene (HDPE) was used as the matrix, vinyltrimethoxysilane (A171) and γ-methacryloxytrimethoxysilane (KH570) were used as coupling agents to modify and prepare WLPF/HDPE composites via a blending-injection molding process. The weather resistance properties and mechanisms of the composites were systematically analyzed using scanning electron microscopy, Fourier-transform infrared spectroscopy (FTIR), mechanical analysis, thermogravimetric analysis, and differential scanning calorimetry. The results showed that the KH570-modified WLPF/HDPE composites retained their excellent tensile and flexural strength after 2000 h of accelerated ultraviolet (UV) aging, and their tensile strength, flexural strength, and flexural modulus were 26.9, 41.0, and 2744.4 MPa, respectively. The thermal property analysis revealed that the thermal stability of the composites decreased after aging. Additionally, the crystallization enthalpy, melting enthalpy, and crystallinity of the composites increased. Highlights Waste laser printed paper fiber/high-density polyethylene (WLPF/HDPE) modified composites were prepared by injection molding process. Ultraviolet (UV) aging properties of WLPF/HDPE composites were investigated for the first time. KH570 modified composites retained excellent tensile and flexural strength after UV aging. The thermal properties of the composites after UV aging were also investigated.
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
RADIATION PHYSICS AND CHEMISTRY
·
2026
·
IF 3.3
Zhipeng Huo,Yidong Lu,Jie Zhang,Guoqiang Zhong
Gd 2 O 3 nanospheres (NSs) with three controlled sizes were synthesized via a homogeneous precipitation method. Both synthesized (Syn-) and commercial (Com-) Gd 2 O 3 fillers were employed as bifunctional neutron and gamma radiation absorbing agents to fabricate radiation shielding (RS) materials. FESEM confirmed the nanospherical morphology of Syn-Gd 2 O 3 fillers. HRTEM and SEAD indicate that all Gd 2 O 3 fillers are polycrystalline. HRTEM confirmed that the Syn-Gd 2 O 3 fillers have (321), (400), and (521) exposed crystal planes, while the Com-Gd 2 O 3 fillers have (222) exposed crystal planes, aligning with the corresponding XRD patterns. FESEM of fracture surfaces revealed a more uniform distribution of Syn-Gd 2 O 3 -NS fillers within the HDPE matrix compared to the irregularly shaped Com-Gd 2 O 3 fillers. The high specific surface area (SSA) and superior dispersibility of Syn-Gd 2 O 3 fillers enhanced the overall performance of the nanocomposite (NC). Notably, NCs containing Syn-Gd 2 O 3 -Ⅱ NSs with an average size of 82.6 ± 14.2 nm achieved a neutron and gamma shielding rates of 99.3% and 73.7%, the Σ , μ , μ m , HVL are 0.239 cm -1 , 0.092 cm -1 , 0.076 cm 2 /g, 7.57 cm, correspondingly, at a thickness of 15 cm, demonstrating its potential for high-performance radiation shielding applications. This study provides a novel strategy for designing lightweight, high-performance radiation shielding materials for nuclear facilities, aerospace applications, radioactive waste conditioning and relative fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 33
·e55841
·
IF 2.7
Yu Du,Hang Tao,Yang Yang,Changzhi Su,Junrong Wang,Yongnian Wang,Boping Liu,Yulong Jin
In this work, four kinds of silica with similar textural properties but different particle size (PS) from 6 to 60 μm were selected as support to prepare silyl-chromate/VO x /silica bimetallic catalysts for ethylene polymerization, thus making it possible to conduct convincing investigation on the effects of catalyst PS over catalytic behaviors and polymer properties. It is found, owing to mass- and heat-transfer limitations, the catalysts with smaller PS showed higher initial activity, while the deactivation in the later stage was more remarkable. Meanwhile, catalysts with smaller PS synthesized bimodal ultrahigh molecular weight polyethylene/high-density polyethylene in-reactor blends (UHMWPE/HDPE IRBs) with higher molecular weight ( MW ) and narrower molecular weight distribution (MWD). Four PE sample couples with MW increasing from 5 × 10 5 to 10 × 10 5 g mol −1 and PS from 40 to 460 μm were selected for tensile and rheological tests. For each couple with similar MW and MWD, the sample with smaller PS always had larger tensile strength and breaking elongation. The cryogenically fractured surface of the samples made by smaller PE particles showed fewer delamination defects and unfused small particles. The rheological results indicate that higher homogeneity was achieved for the sample with smaller PS, which was reflected by the unexpected higher viscosity and storage modulus.
研究领域:
材料科学
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催化化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
·
IF 5.2
Xiaohan Yang,Yi Qin,Longli Peng,Mengyuan Pan,Haiyan Xu
Electromagnetic pollution causes significant harm to human health and information security. The development of materials for shielding against electromagnetic interference (EMI) is important in reducing electromagnetic pollution. In this study, an eco-friendly, lightweight EMI shielding material was prepared by mechanically mixing carbon nanotubes (CNTs), hydrophobic bamboo fibers, and recycled high-density polyethylene (HDPE), followed by hot-pressing (150 °C, 10 MPa, 30 min) the mixture to obtain CNTs/bamboo fiber/HDPE composites (CNTs-BPC). The CNTs-BPC exhibited satisfactory conductivity (1.1 ×10 4 S/cm) and EMI shielding effectiveness (49.6 dB, 8.2–12.4 GHz). The uniform dispersion of an appropriate amount of CNTs created a conductive pathway in CNT-BPC, prompting the absorption of incident EM waves . In addition, the CNTs-BPC possessed a high tensile strength (30.5 MPa), thermal stability, and corrosion resistance . The CNTs-BPC composite developed in this study shows excellent overall performance and holds broad application prospects as a high-temperature and corrosion-resistant EMI shielding material.
研究领域:
材料科学
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环境科学
·
电子工程
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高影响因子
FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Jing Su,Tan Li,Guanqun Luo,Yi Zhang,Evgeny R. Naranov,Kaige Wang
Co-pyrolysis of plastics and biomass is expected to replace traditional petroleum processing to produce BTEX (benzene, toluene, ethylbenzene , and xylenes) on a large scale, which are important chemical raw materials. The introduction of bimetallic catalysts and hydrogen in co-pyrolysis systems is an effective strategy to increase the content of aromatic hydrocarbons in pyrolysis oils, which has not been studied so far. The present study investigated the efficacy of bimetallic catalysts in enhancing aromatization and Diels-Alder reactions in comparison to Mo/ZSM-5. The synergistic interaction between bimetals contributed to the improved selectivity of aromatic hydrocarbons, particularly BTEX. Results revealed that NiMo/ZSM-5 catalysts led to higher aromatics selectivity in liquid oil, whereas FeMo/ZSM-5 resulted in higher BTEX selectivity in aromatic hydrocarbons. Moreover, metal oxide-supported bimetallic catalysts exhibited lower selectivity for aromatic hydrocarbons in liquid oil, despite facilitating higher liquid-oil yield. Among the metal oxide-supported bimetallic catalysts, FeMo/TiO 2 demonstrated the highest selectivity (56%) for aromatic hydrocarbons in liquid oils. The introduction of hydrogen resulted in 100% selectivity of BTEX in aromatic hydrocarbons, thus highlighting the significance of hydrogenation in enhancing the selectivity of BTEX. Combined with the experimental results and literature, a possible reaction mechanism was also proposed.
研究领域:
化学工程
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催化科学
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.9
Xiurong Hou,Jiaqi Wang,Ruihuan Wang,Sitong Zhang,Wenwen Yu,Jiangao Shi
The high-density polyethylene (HDPE)/ethylene–acrylic acid block copolymer (EAA)/poly (hexamethylene guanidine) (PHMG) composites with outstanding comprehensive properties were successfully fabricated through the synergistic design of covalent and ionic bonds with PHMG. Structural characterization confirmed the formation of amide bonds, while rheological and thermal analyses jointly demonstrated that the covalent bonded PHMG significantly enhanced molecular chain entanglement. This entanglement effect led to synergistic optimization of both tensile strength and toughness in this composite. Compared to pure HDPE, the HDPE/EAA/PHMG composites showed a slight decrease in tensile strength but a substantial 302 % surge in impact strength. Ionic bond modification of the composite material via PHMG solution immerse effectively enhanced its antibacterial properties, demonstrating good inhibitory effects against both E. coli and S. aureus . Furthermore, the modified material exhibits outstanding antifouling performance, reducing Chlorella attachment by 91.6 %. A three-month in marine test further validated its effective inhibition of algal growth. This research offers innovative material design concepts and technical pathways for developing high-performance marine antifouling materials that integrate significantly boosted toughness with outstanding antifouling performance.
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高影响因子
RHEOLOGICA ACTA
·
2019
·Vol. 58
·期 3
·183-192
·
IF 2.531
Liu Lichao,Wang Fei,Xue Ping,Wang Suwei
In this study, rheological behaviors and capillary extrusion flow instabilities of ultra-high molecular weight polyethylene (UHMWPE)/high-density polyethylene (HDPE)/SiO 2 composites containing modified nano-SiO 2 or pure nano-SiO 2 are investigated. Effects of interfacial conditions between the dispersed nano-SiO 2 phase and PE matrix on rheological behaviors are analyzed. The results show that modified nano-SiO 2 in the PE matrix has a relatively strong interfacial interaction with the polymer chains compared with pure nano-SiO 2 , thus causing a more pronounced shear thinning behavior and reducing extrudate swell during capillary extrusion. Nanocomposite extrudates experience the transition of smooth- sharkskin- oscillating distortion—overall melt fracture with the increase of shear rate (or shear stress). The interfacial interaction allows a more storage of elastic energy as the melt flow through the die, resulting in sharkskin distortion and oscillating distortion to occur prematurely at critical shear rates. It also restricts the elastic recovery of the melt after leaving the die, thus delaying sharkskin distortion under shear stress. At high shear rates, the modified nano-SiO 2 particles begin to roll, and some of the unmodified particles move and embed to the wall. It is believed that the interfacial adsorption effect and the wall-slip effect of nanoparticles exist simultaneously in the whole extrusion process.
研究领域:
材料科学
·
流变学
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高影响因子
Polymers
·
2025
·Vol. 17
·期 4
·535
·
IF 4.9
Shunquan Liu,Run Zhang,Chenchao Fu,Tianshuo Zheng,Ping Xue
Due to excellent chemical resistance and impermeability, high-density polyethylene (HDPE) is widely used in petrochemical transportation, product packaging, sports equipment, and marine applications. Yet, with the wide variety of service environments, its mechanical and thermal properties do not meet the demand. In the present study, a compounding cross-linker comprising di-tert-butyl peroxide (DTBP) and triallyl isocyanurate (TAIC) is employed by combining with a two-step preparation process. High-quality cross-linking reactions are achieved for HDPE. In this study, the cross-linking of DTBP is first examined separately. A peak cross-linking degree of 74.7% is achieved, and there is a large improvement in thermal resistance and mechanical properties. Subsequently, the composite cross-linking system of DTBP and TAIC is investigated. The peak cross-linking degree is 82.1% (10% increase compared to DTBP). The peak heat deformation temperature is 80.1 °C (22% increase compared to DTBP). The peak impact strength is 104.73 kJ/m2(207% increase compared to neat HDPE). The flexural strength is 33.6 MPa (22% increase compared to neat HDPE). The results show that this cross-linking system further improves the cross-linking degree, heat resistance, and mechanical properties of HDPE, indicating its potential application in engineering materials for high performance.
研究领域:
材料科学
·
聚合物工程
·
化学工程
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产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2019
·
IF 4.046
Peng Fei,Zhengli Guo,Chunlu Ye,Ziling Teng,Qiaoling Chen,Guoguang Zhang,Yuanhong Zhuang,Wenqiang Lai,Hanguo Xiong,Jie Cai
In this study, H 2 Ti 2 O 5 ·H 2 O nanotubes (TNTs) and Ce-doped titanate nanotubes (Ce-TNTs) were synthesised via hydro-thermal synthesis and incorporated into bamboo fibre/high-density polyethylene (HDPE) (BH) composites to enhance the flame retardance of these composites. Transmission electron microscopy (TEM), X-Ray Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses showed that Ce ions were well doped into the crystal lattice of TNTs, but these ions slightly affected the sizes of TNTs. Both 6 wt% TNTs and 6 wt% Ce-TNTs were well distributed in the bamboo fibre/HDPE matrix, and promoted the formation of a network structure in the BH composites. Cone calorimetry test and limiting oxygen index test indicated that TNTs enhanced the flame retardance of the BH composites. Compared to those of BH0, the time to ignition (TTI) of bamboo fibre/HDPE composites incorporating TNTs (BHT) was delayed from 29 s to 36 s, and peak heat release rate (pHRR), average heat release rate (av-HRR) and total heat release (THR) of BHT decreased from 658.6, 222.7 and 55.8 kW/m 2 to 503.0, 158.0 and 39.6 kW/m 2 , respectively. The improvement mainly attributed to adsorption effect of TNTs. When Ce-TNTs were used as a substitute for TNTs, the TTI of bamboo fibre/HDPE composites incorporating Ce-TNTs (BHC) composites were further delayed to 41 s, and pHRR, av-HRR and THR decreased to 399.1, 138.0 and 34.5 kW/m 2 , respectively.
研究领域:
材料科学
·
纳米技术
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高影响因子
危险品化学品经营许可证（带存储）