WASTE MANAGEMENT
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2025
·
IF 7.1
Tianxiang Deng,Yi Chen,Delong Hou
The recycling of discarded THHN cables generates a substantial amount of mixed PVC/PA waste plastics, presenting a significant challenge to achieving sustainable development. In this study, we present a simple, catalyst-free, and scalable approach for upcycling all components of mixed PVC/PA waste. This method leverages HCl released from PVC during hydrothermal treatment to catalyse the cleavage of amide bonds in PA, converting mixed PVC/PA waste into valuable platform chemicals (over 80 % product yield) and carbon black within 30 min. Our work demonstrates a high-value recycling process for mixed PVC/PA waste in discarded THHN cables, reducing the generation of harmful Cl-containing waste, mitigating environmental pollution caused by mixed plastics, and offering valuable insights for the recycling of other PVC-containing mixed plastic wastes.
研究领域:
环境科学
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材料工程
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化学工程
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DOI
PubMed
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-14
·
IF 3.8
Liu Chao,Jia Xinlei,Wang Yonghui,Gu Yuxin,Liu Yanjuan,Wei Lixin,Xu Lanjuan
This paper aims to address the issue of environmental pollution resulting from marine oil spills by evaluating the oil adsorption performance of commonly used fence materials. Conventional oil adsorption materials exhibit limited rates and capacities for oil adsorption. Existing methods have proven insufficient in meeting the requirements for efficient and rapid oil–water separation. A new oil-absorbing barrier was developed by utilizing high oil adsorption resin as the primary material and hydroxypropyl methyl cellulose (HPMC) as the binder, leveraging the exceptional oil adsorption and hydrophobic properties of P(BMA-SMA-St)/MIL-101(Fe) resin. The oil-absorbing fence was characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The oil adsorption rates of carbon tetrachloride, toluene, diesel and gasoline by the oil adsorption fence with 25 g/L resin content were 101.26 g/m 2 , 68.12 g/m 2 , 35.19 g/m 2 , and 46.69 g/m 2 , respectively. After 120 h of UV irradiation, the coating’s oil absorption capacity remained nearly unchanged, and it demonstrated outstanding mechanical, chemical, and wear resistance. As a result, the oil adsorption fence possesses the capability to rapidly absorb oil from the water’s surface during the process of containing oil pollution, leading to positive social and economic impacts.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2024
·
IF 6.9
Hongcai Su,Yuheng Wu,Jie Pan,Lingjun Zhu,Shurong Wang,Yanjun Hu
Mixed plastic wastes are posing substantial challenges to the environment due to their mass production and difficulty in separation, especially mixed polyvinyl chloride/polyethylene terephthalate (PVC/PET) plastic wastes. In this work, a novel tandem thermochemical process including hydrothermal depolymerization of mixed PVC/PET plastic wastes, and subsequent catalytic aqueous phase reforming (APR) of hydrolysate solution was developed. The activated carbon derived from PVC (PVC-AC) supported Ru catalysts were prepared and successfully used in the catalytic APR of hydrolysate solution for high-purity H 2 production. Besides, the presence of NaOH realized in-situ capture of CO 2 in APR process, which promoted the water-gas shift reaction and inhibited methanation reactions. As a result, a high H 2 yield of 12.23 mol/kg Plastic with H 2 concentration of ca. 98% was obtained via tandem hydrothermal conversion of mixed PVC/PET plastic wastes. The by-products from the entire tandem process including the terephthalic acid (TPA) and sodium chloride (NaCl) were separated and purified for further industrial application. This work provided a sustainable route for conversion of mixed plastic wastes into value-added fuel.
研究领域:
环境科学
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能源化学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
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2022
·
IF 4.291
Tianyun Dong,Tao Liu
There has recently been a substantial increase in interest in research on PVC gel actuators because of its numerous advantages over traditional actuators, such as low mass density, large actuation strain, great compliance, and simple manufacturing. However, the current PVC gel actuator is mainly based on the research of rigid electrodes, and there are few researches based on flexible electrodes . In this paper, a fully flexible actuator based on PVC gel film and carbon grease electrode has been prepared. The mechanical properties of the prepared PVC gels with different plasticizer ratios were tested. Three commonly used hyperelastic models (Neo-Hookean, Mooney-Rivlin and Yeoh models) were used to characterize the mechanical properties of PVC gels, and only the Yeoh model was found to be better for the characterization of the mechanical properties of PVC gels. In addition, we used the Prony series to successfully characterize the viscoelasticity of PVC gels. Then, the fully flexible PVC gel actuator (FFPGA) with long-time static and dynamic response characteristics was studied. It was found that the FFPGA has strong viscoelasticity when working. Finally, we proposed to simplify the FFPGA into a capacitor and designed a high-pass filter in the driving circuit. The self-sensing function of the FFPGA was achieved by superimposing a high-frequency low-voltage sensing signal on the low-frequency high-voltage driving signal as the input signal.
研究领域:
材料科学
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智能材料
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柔性电子
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产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2019
·Vol. 26
·期 1
·97-108
·
IF 1.292
Heyun Wang,Yingchun Li,Zhong Wei,Yanmei Song,Qiang Liu,Chunlin Wu,Hao Wang,Haoji Jiang
Poly(vinyl chloride) (PVC) nanocomposites were prepared via an in situ intercalative suspension polymerization of vinyl chloride with four organic carboxylic acid salts (montmorillonite [MMT] units) containing thermally stable lanthanum ions. The effects of different lanthanum organic montmorillonites (La-OMMTs) on the particle features and molecular weight were investigated. The transmission electron microscopy data indicated the formation of partially exfoliated or intercalated PVC/La-OMMTs nanocomposites. The effect of different functional groups on the mechanical properties and processing thermal stability of PVC/La-OMMT nanocomposites were investigated. Tensile testing and two-roll mill processing results showed that La-OMMTs could enhance the dynamic thermal stability and mechanical properties versus PVC pure resin and PVC/I.30P nanocomposites (composed of PVC and I.30P). This suggested that the double bond and amidogen group in La-OMMTs could promote the dispersion of La-OMMTs in the PVC matrix and also improve the adhesion between the La-OMMTs and PVC matrix. The results have potential value in the industrial development of PVC/La-OMMTs nanocomposites. J. VINYL ADDIT. TECHNOL., 26:97–108, 2020. © 2019 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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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Feiyang Cheng,Xiangfeng Zhu,Fucheng Yun,Mengting Wei,Chen Shi,Jian Han
As one of the most widely utilized polymer coating systems, polyvinyl chloride (PVC) is extensively applied in industrial protection fields due to its excellent processability and cost efficiency. To meet rising performance demands in extreme environments, developing PVC coatings with efficient flame retardancy and smoke suppression has become a key research focus. This study developed an innovative BiOCl@Cu-MOF hybrid through an in situ growth strategy. Incorporating the additive at 15 phr increased the limiting oxygen index (LOI) from 23.4 % to 29.4 %. The PVC coating also passed the UL-94 rating test, reaching the highest V-0 level. Cone calorimetry analysis showed a 55.9 % reduction in peak heat release rate, indicating superior flame retardant behavior. In terms of smoke suppression, the coating achieved a 66.7 % decrease in peak smoke production rate. More importantly, the peak carbon monoxide production, a critical lethal factor in fires, was suppressed by 46.9 %. The PVC coating further exhibited 99.9 % antibacterial efficacy against both Staphylococcus aureus and Escherichia coli . This work establishes a pioneering design paradigm for multifunctional protective coatings, offering significant potential in fire-safe building materials, electronics encapsulation, and bio-secure applications.
研究领域:
材料科学
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化学工程
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高分子材料
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防火技术
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产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2022
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IF 5.477
Yong Pan,Feng Liu,Yong Zhou,Chen Zhu,Haixia Pang,Baoming Xu
Background Phosphorus in wastewater is a major environmental concern. Very small phosphorus inputs in the environment can cause algal blooms that can deplete the dissolved oxygen and decrease the water quality, leading to eutrophication. Furthermore, some algal blooms produce toxins and bacterial growth that can cause human illness through exposure to contaminated water. Therefore, It is necessary to remove phosphorus before it is discharged to the environment. Methods adsorbent enhanced adsorptive ultrafiltration (UF) has recently emerged as an advanced ion recovery technology with membrane filtration function and adsorption function, and is very effective in removing cationic bisphosphate and anionic phosphate. Significant findings Herein, a novel defect-rich and covalently-crosslinked octanoic acid (OA)-UiO-66(Zr)-NH 2 /PVC adsorption ultrafiltration membrane are designed for removal of phosphate ions in water. The OA-UiO-66-NH 2 /PVC-33 membrane achieved the adsorption capacity (∼30 mgg −1 ) and higher removal efficiency (∼90%). The OA-UiO-66(Zr)-NH 2 /PVC ultrafiltration membrane exhibited a higher water flux of 266.9 L/(m 2 ·h·bar) compared to those of pristine PVC and UiO-66-NH 2 /PVC. Filtration and cyclic stability experiments reveal that OA-UiO-66(Zr)-NH 2 /PVC membrane can maintain a high retention capacity and exhibit excellent regeneration performance after 5 cycles.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
GREEN CHEMISTRY
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2019
·Vol. 21
·期 23
·6430-6440
·
IF 9.405
Siyu Pan,Delong Hou,Jinming Chang,Zhou Xu,Songhang Wang,Sunxian Yan,Qi Zeng,Zhonghui Wang,Yi Chen
The safety of flexible polyvinyl chloride (PVC) materials is now being questioned, partially due to allegations that di-(2-ethylhexyl) phthalate (DEHP), the dominant PVC plasticizer, is an endocrine disruptor and a probable carcinogen. As sustainable alternatives, aliphatic ester-derived plasticizers feature low cytotoxicity, biodegradability, and renewability, but they can only partially replace DEHP in PVC formulations because they have a strong tendency to migrate. Here, using epoxidized fatty acid methyl esters and aliphatic diesters as representatives, we demonstrate that covalently attaching one short ester at each α-position of aliphatic esters via Claisen condensation with judiciously selected dialkyl carbonate significantly suppresses their migration from the PVC matrix. In certain scenarios, the engineered plasticizers even migrate at a rate comparable to, or improved beyond that of DEHP. This approach harnesses the α-proton, a structural feature shared by all aliphatic esters, and dialkyl carbonate, an established “green chemical”, thus providing a potentially general and green route towards DEHP alternatives with unprecedented performance that may contribute to sustainability of the old and oft-maligned PVC industry.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 118
·97320-97329
·
IF 3.84
Zhenjiang Yu,Yuanyuan Zhao,Bing Gao,Xuyang Liu,Liming Jia,Fangbo Zhao,Jun Ma
To improve the anti-biofouling properties of membranes, Ag-embedded nano-sized titanium dioxide (Ag-n-TiO2) particles were utilized as biocidal agents to modify polyvinyl chloride (PVC) membranes. Both Ag-n-TiO2/PVC flat sheet membranes and reinforced hollow fiber membranes were fabricated by a phase inversion method with varying Ag-n-TiO2 particle concentrations. As a result, the hydrophilicity, permeability, and retention capability increased with Ag-n-TiO2 concentrations from 0 to 1.5 wt%. In addition, the in situ antibacterial and anti-formation of biofilm properties of the modified membranes were greatly enhanced in the conventional inhibition zone test, Escherichia coli (E. coli) absorption experiment, fluorescent staining experiment, as well as long-term continuous biofouling test. The best results were obtained for the PVC membrane modified by 1.0 wt% Ag-n-TiO2. The optimized membrane presented not only better permeability and in situ antibacterial properties in the E. coli adhesion test, but also an enhancement in resisting biofilm formation and a more steady permeation flux in long-term filtration than the unmodified membrane.
研究领域:
材料科学
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环境工程
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微生物学
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产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 7
·4064-4070
·
IF 3.119
Yingna Chang,Qidong Dang,Imran Samo,Yaping Li,Xuejin Li,Guoxin Zhang,Zheng Chang
The removal of heavy metal contaminants has aroused global attention due to water shortage and the lax control on the discharge of heavy metal pollutants. Capacitive deionization (CDI) has emerged as a robust, energy-/cost-efficient technique for water treatment. Herein, we reported the simple synthesis of N, S-co-doped carbon materials (NS-C) derived from PVC plastic wastes as CDI electrode materials for the efficient removal of heavy metal ions (HMIs). The NS-C exhibited a large specific surface area (∼1230 m2 g−1) and contained heavy heteroatom doping (∼4.55 at% N and ∼13.30 at% S). The CDI electrode fabricated using NS-C showed high removal efficiency (94–99%), high capacity (36–62 mg g−1), and good regeneration capability for the adsorption of various kinds of low-concentration heavy metal ions (including Fe2+, Co2+, Ni2+, Cu2+, Pb2+, and Cd2+). Moreover, PVC plastic wastes that are heavily accumulated in the environment and extremely hard to be decomposed and recycled were applied as the carbon source in this study for the fabrication of NS-C, which further rendered the importance of our study in practically treating hazardous waste (HMIs) with waste (PVC plastic wastes) in a clean and efficient way.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2017
·
IF 4.421
Puyou Jia,Guodong Feng,Caiying Bo,Lihong Hu,Xiaohui Yang,Liqiang Zhang,Meng Zhang,Yonghong Zhou
A composition of phosphaphenanthrene groups-containing castor-oil-based phosphate plasticizer (PGPP) was synthesized and characterized. Flame retardant PVC blends cooperated with different mass of PGPP were prepared. Flame retardancy of PVC blends were investigated with LOI, TGA, TGA-FTIR, TGA-MS and cone calorimeter. Flame retardant mechanism was also studied. The flame retardant performance of PGPP provides novel route for efficient use of vegetable oil and preparing advanced flame retardant PVC materials.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MONATSHEFTE FUR CHEMIE
·
2019
·Vol. 150
·期 11
·1903-1910
·
IF 1.501
Li Zhongqiu,Yang Kunhao,Lv Yueguang,Wang Qingnan,Li Chang,Wu Li,He Yujian
Abstract A novel method, based on modified silver nanoparticles, for high-throughput visual detection of heavy metal ions in polyvinyl chloride (PVC) products was developed including a key pretreatment process in which tetrahydrofuran was used to dissolve PVC powder samples quickly. Heavy metal ions were successfully transferred from THF to the aqueous phase by the liquid–liquid extraction method during the pretreatment procedures. Then, enriched Cu 2+ , Mn 2+ , and Cr 3+ were detected by three kinds of silver nanoparticles (4-MBA-AgNPs, 4-MBA-MA-AgNPs, and 4-NBT/4-MBA-AgNPs) using naked eyes and microplate reader, respectively. The visual detection limits of Cu 2+ , Mn 2+ , and Cr 3+ were 1.0 × 10 −6 M, 1.0 × 10 −7 M, and 1.0 × 10 −6 M, while the detection limits of Cu 2+ , Mn 2+ , and Cr 3+ were 2.5 × 10 −8 M, 5.0 × 10 −8 M, and 5.0 × 10 −8 M using microplate reader, respectively. Apparently, the proposed method could provide a potent means in the practical detection of heavy metal ions in PVC products with advantages of low-cost, rapid, high-throughput, and on-site detection. Graphic abstract
研究领域:
分析化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）