RSC Advances
·
2018
·Vol. 8
·期 55
·31471-31477
·
IF 2.936
Yongyong Zhang,Ying Jia,Li'an Hou
Zeolitic imidazolate framework-8 (ZIF-8) was introduced on the surface of fibers of a non-woven fabric made of polyethylene terephthalate (PET). The phase structure, morphology, textural properties and chemical structure were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen (N2) adsorption analyzer and Fourier transform infrared spectroscopy (FTIR). The XRD, SEM and FTIR results indicated that ZIF-8 had been successfully coated on the PET fibers. N2 adsorption analyses suggested that addition of ZIF-8 significantly increased the specific surface and micropore volume of composites. The PM2.5 removal experiment showed the filtration efficiency of ZIF-8/PET was twice as high as that of pure PET. Meanwhile, ZIF-8/PET also displayed a low pressure drop and good recycling performance. This research provided a facile method to deposit active ZIF-8 onto polymers with low air resistance, and that ZIF-8/PET was a good candidate as an air filter for PM2.5 removal.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2016
·
IF 3.698
Yaolan Niu,Diwen Ying,Kan Li,Yalin Wang,Jinping Jia
Functional PET fiber (PET–AA–CS) was prepared by oxygen–plasma pretreatment and grafting of acrylic acid (AA) and low–molecular–weight chitosan (LMCS) on the polyethylene glycol terephthalate (PET) substrate. This adsorbent was targeted for quick removal of metal ion in river pollutions with an easy recycling of the fiber after emergency processing. The fabricated PET–AA–CS was characterized by the scanning electron microscope (SEM), contact angle, fourier transform infrared (FTIR) spectra and X–ray photoelectron spectroscopy (XPS) to look into its morphology, surface functional groups, and adsorption mechanism of copper ions from the aqueous solution. The overall adsorption process of copper ions on the PET–AA–CS was pH–dependent with an optimal pH value of 5.0, at which a maximum capacity of 68.97 mg g −1 was obtained. The result of fitting also shows that adsorption process follows the Langmuir isotherm and pseudo–second–order model. Moreover, the material shows good stability during 5 cycles of adsorption and desorption, and also shows no significant effect of co–existing ions including Ca 2+ , Mg 2+ , K + , Cl − , and et al. In general, PET–AA–CS developed in this study shows significant benefit of eco–friend and cost-efficiency for fast removal of copper ions in potential river metal pollutions comparing with traditional adsorbents.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yue Zhang,Kongyin Zhao,Zhenhao Yang,Zhijian Zhang,Zhilong Guo,Rongrong Chu,Wei Zhang,Wenxiong Shi,Jiacheng Li,Ziyi Li,Haiyi Liu,Anhou Xu,Xi Chen
Calcium alginate (CaAlg) hydrogel has good anti-pollution performance. However, the self-supporting CaAlg hydrogel filtration membrane is difficult to be batch prepared due to its poor mechanical properties. In this paper, polyester (PET) non-woven fabric, polypropylene (PP) non-woven fabric and polyhydroxybutyrate (PHB) nanofibers were used as support layer to prepare CaAlg composite membranes. A series of studies proved that CaAlg-PET membrane showed higher stability and flux, which revealed that PET non-woven fabric was the best carrier among the three fiber carriers to enhance the various properties of hydrogel. Methyl blue (MB) and sodium chloride (NaCl) were used as the representatives of molecules and ions, respectively. The effects of concentration, operating pressure and temperature on the separation performance of MB/NaCl by CaAlg-PET membrane were investigated. The flux of CaAlg-PET membrane was 19.3 L·m −2 ·h −1 ·bar −1 , and the membrane showed a high selectivity of 183.4 to MB/NaCl mixture (99.5% rejection of MB and 8.3% rejection of NaCl). Moreover, Barium ion was used to cross-link sodium alginate to prepare barium alginate (BaAlg) hydrogel coated composite membrane (BaAlg-PET) using PET fiber as the carrier. The BaAlg-PET membrane exhibited higher strength, stability, flux and better separation performance than CaAlg-PET membrane. BaAlg-PET membrane exhibited a high flux of above 35.5 L·m −2 ·h −1 ·bar −1 , and the molecular ion selectivity was 306.3 (99.7% rejection of MB and 8.1% rejection of NaCl). Membrane pore structure and pore size distribution of BaAlg hydrogel membrane were generated by molecular dynamic (MD) simulations. In sum, this work provided a green, economical and expandable new idea and membrane material for the separation of molecules and ions.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 3
·520
·
IF 3.164
Jiping Wang,Wenqing Cheng,Yuanyuan Gao,Lei Zhu,Liujun Pei
Disperse dyeing for polyethylene terephthalate (PET) fiber in different non-aqueous solvent dyeing systems have been extensively studied over the past decades. In the present work, disperse dyeing for PET was investigated in a silicone solvent dyeing system. The influence of accelerant on the fiber swelling, uptake of dye, K/S value of dyed fiber, and dye solubility in the silicone solvent were systematically investigated. Compared with no accelerant, the final uptake of the disperse dye (C. I. Disperse Blue 367) could increase to 81% with 20% accelerant in the silicone solvent dyeing system, and the K/S value of dyed fiber was also higher (3.3 for no accelerant vs. 13.2 for accelerant). The influence of accelerant on the performance of disperse dyeing was also studied. Firstly, the solubility of the disperse dye in the silicone solvent can be decreased by the accelerant. Moreover, the solubility of the disperse dye is inversely proportional to the K/S value and the uptake of the dye. In addition, although the silicone solvent can diffuse to the inner fiber and has a partial swelling in the PET fiber, the swelling of PET can be improved by the accelerant. Furthermore, the swelling of fiber can reach equilibrium when the amount of accelerant was 15% (the weight of fiber). Therefore, this eco-friendly dyeing technology has considerable potential for application to a broad array of chemical fibers.Keywords:PET fiber;disperse dye;silicone solvent;accelerant;solubility;swelling
研究领域:
纺织化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Yinchun Fang,Xinhua Liu,Xuchen Tao
High flammability and dripping restrict the widely applications of PET fiber, a lot of efforts have been made to overcome these problems. In this paper, chitosan (CH) and ammonium polyphosphate (APP) were used as the intumescent flame retardant system which was constructed on PET fabrics surface via the Layer-by-layer (LBL) assembly technique. The flame retardancy and anti-dripping performance of the coated PET fabrics were determined by LOI values and vertical burning test. The results revealed that both the flame retardancy and anti-dripping performance of the LBL assembly coated PET fabrics were improved, particularly when the CH/APP bilayer was over 10 BL, the dripping phenomenon was eliminated. Alkali treatment of PET fabrics before LBL assembly effect on the flame retardancy and anti-dripping performance was investigated. The results indicated that alkali treatment of the PET fabrics would promote the combination of PET fabrics and the charged flame retardants. Thermogravimetric analysis (TGA) was used to investigate the thermal stability of uncoated and LBL assembly coated PET fabrics. The results of TGA revealed that LBL assembly coated PET fabrics would promote the char formation indicating the obviously condensed phase flame retardant action. The SEM images of the char residues revealed that LBL assembly coated PET fabrics would promote the formation of intumescent char residues with lots of microporous indicating the better anti-dripping performance.
研究领域:
材料科学
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纺织工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Chengmin Hou,Ying Zhang,Qi Gui
With the advancement of science and technology, the problem of wastewater pollution is escalating and there is an urgent need to focus on wastewater treatment. After the bromination reaction of Polyethylene terephthalate (PET) as an adsorption substrate (It is used to remove heavy metal ions), PET-g-PAA adsorption material was synthesized through the grafting polymerization of PET with poly(acrylic acid) (PAA) derived from the free radical polymerization of acrylic monomer. The intricate structure of the composite material was meticulously analyzed using a range of sophisticated techniques. The optimum polymerization and adsorption conditions of PET- g -PAA for Cu(II) under different conditions were investigated. The optimum polymerization conditions were 1.0 g polymer mass, 2 h polymerization time, 50 °C reaction temperature and 1 cm × 1 cm PET fiber cloth. Under conditions where the Cu(II) solution concentration was 20.48 mg/L and the adsorption process occurred at 50 °C, the peak adsorption efficiency of PET-g-PAA reached 83.70 %, accompanied by an optimal adsorption capacity of 16.85 mg/g. The adsorption curves of PET- g -PAA on Cu(II) fitted well with the pseudo-second-order kinetic model and Freundlich isotherm model, indicating that the adsorption process belongs to chemisorption. Moreover, the initial adsorption rate (h = 20.16 mg/g·min) is larger, indicating that the adsorption rate of PET-g-PAA is faster. The adsorbent belongs to multilayer adsorption on a multiphase surface. The heterogeneity factor was greater than 2 and less than 10, which proved that the adsorption process of adsorbent was favorable. On the basis of adsorption thermodynamics, Δ G 0 < 0 kJ/mol, Δ S 0 = 39.82 kJ·mol −1 ·K −1 , ΔH 0 = 8.36kJ/mol, indicating that the adsorption of Cu(II) by PET- g -PAA was a spontaneous endothermic and favorable process. The PET-g-PAA adsorbent achieving exceptional heavy-metal removal efficiency, enhanced reusability, and cost-effectiveness for sustainable wastewater remediation—a significant advancement over conventional single-use or non-scalable adsorbents.
研究领域:
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
APPLIED SURFACE SCIENCE
·
2012
·
IF 2.103
Xiang-Dong Liu,De-Kun Sheng,Xiu-Mei Gao,Tong-Bing Li,Yu-Ming Yang
A facile and highly efficient method for adhesion improvement of PET/TPU laminates was introduced. A considerable improvement in adhesion was achieved by treating PET fabric with isocyanate (MDI) in toluene solution. Compared with unmodified ones, the maximal peel strength reaches to 2.27 kN/m (up to three times). The fabrics were also treated with NaOH and CDT (corona discharge treatment) and the results were compared respectively. It is considered that the improvement mainly depends on the strengthening of chemical bonding and mechanical interlocking between the fiber and the adhesive matrix. As the difference directly affects the effective transference of the stress (tension force) from matrix to fiber. The failure surface of PET fiber was severely destroyed which could be examined by scanning electron microscopy (SEM).
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Mei Hong,Xiao Ma,Wenyuan Hu,Chen Zhu,Wei Dong,Lumin Chen,Fuping Qian
The issue of air pollution, encompassing airborne bacteria and particulate matter (PM), has emerged as a prominent concern impacting human comfort and health. However, conventional air filtration materials fail to meet the requirements for efficient PM capture or immediate bacteria elimination, thereby heightening the risk of contracting diseases due to pollutant accumulation during filtration. Herein, the hydroxyl group in cellulose acetate (CA) was used as the nucleation site to facilitate the self-assembly of Cu-MOF crystals on PET substrate through hydrogen bonding, and then a layer of PVDF-HFP was electrostatically sprayed to finally obtain the high-efficiency and low-resistance PET/CA-MOF-PH air filtration material. On the one hand, the PET/CA-MOF-PH filter material exhibits outstanding filtration performance (99.82 % for PM1.0, 99.93 % for PM2.5, and 99.99 % for PM10) and a low-pressure drop (62 Pa) due to the highly dispersed and dense micro- and nanostructures of the surface layers of the filter material. On the other hand, benefitting from Cu 2+ in the Cu-MOF crystals, PET/CA-MOF-PH filter material also performs excellently in bacterial killing. The filtration capacity difference between commercial PET fibers and PET/CA-MOF-PH filter media at various wind speeds was further investigated through dynamic particle capture simulation and airflow field distribution analysis. This study thus suggests that PET/CA-MOF-PH with high filter efficiency, low resistance, and excellent antibacterial activity designed by self-assembly/electrostatic spraying strategy is expected to be an ideal material for air filters, and this strategy can guide the rational design of multifunctional novel filter materials suitable for environmental and energy fields.
研究领域:
环境科学
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材料科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Sijie Qiao,Zhicheng Shi,Yu Zhang,Gengrun Zhang,Zhiyu Huang,Annan He,Ming Chen,Guizhen Ke,Jia Yuan,Shichang Chen,Fengxiang Chen
Polyester (PET) fiber, also known as “the king of fibers”, is one of the fastest-developing, highest-yielding, and most widely-applied fibers among various synthetic fibers since 1960s and widely applications in clothing, carpets, and decorative fabrics due to its excellent properties such as high strength, stable dimensions, and chemical corrosion resistance. However, polyester fibers are fusible and flammable synthetic fibers. Meanwhile, PET fibers have poor hydrophilicity and are difficult to dye due to the compact molecular structure of PET and its semi-crystalline structural properties. The aforementioned shortcomings severely restrict their application in home furnishings, clothing, and industrial textiles. Herein, we firstly prepared the colorful PET fibers by depositing an ultra-thin and dense TiO 2 , Al 2 O 3 , and ZnO nano-film layer with the maximum thickness of ~1/100 of the fiber diameter via multi-pulse vapor phase infiltration (MPI) technology, respectively. As-prepared PET fibers successively produced beautiful yellow, blue, purple, green, and red bionic colors. The colors of the colored PET fibers can withstand tape tearing, washing, and ultraviolet (UV) irradiation and exhibiting an excellent color fastness. Most importantly, the colored PET fibers also exhibiting enhanced flame-retardant and anti-dripping properties. This work provides a new idea for the synergistic improvement of eco-coloring, flame retardant, and anti-dripping properties of PET fibers, which is expected to guide the functional fiber design for future innovations.
研究领域:
材料科学
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化学工程
·
纳米技术
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纺织工程
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高分子科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yuxin Lin,Jingyi Chen,Yuhan Mai,Liyun Chen,Zheng Chen,Guodong Wang,Lina Deng,Peng Xu,Cai Yuan,Longguang Jiang,Mingdong Huang
Air pollution caused by bacteria and viruses has posed a serious threat to public health. Commercial air purifiers based on dense fibrous filters can remove particulate matter, including airborne pathogens, but do not kill them efficiently. Here, we developed a double-grafted antibacterial fiber material for the high-efficiency capture and inactivation of airborne microorganisms. Tetracarboxyl phthalocyanine zinc, a photosensitizer, was first grafted onto the polyester (PET) fiber, followed by coating with chitosan on the surface of PET fiber to make a double-grafted fiber material. Under the irradiation of light with a specific wavelength (680 nm), double-grafted fiber materials killed up to 99.99% of Gram-positive bacteria and Gram-negative bacteria and had a significant antibacterial effect on drug-resistant bacteria. The double-grafted PET fiber showed broad-spectrum antibacterial activities and was capable to inactivate drug-resistant bacteria. Notably, in filtration experiments for airborne bacteria, this double-grafted PET fiber demonstrated a high bacteria capture efficiency (95.68%) better than the untreated PET fiber (64.87%). Besides, the double-grafted PET fiber was capable of efficiently killing airborne bacteria. This work provides a new idea for the development of air filtration materials that can efficiently kill airborne pathogen and has good biosafety.
研究领域:
材料科学
·
环境科学
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生物技术
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公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2024
·Vol. 17
·期 20
·5126
·
IF 3.1
Ke-Ke Yu,Tai-Qi Zhao,Qi-Ling Luo,Yang Ping
Three-dimensional printed concrete (3DPC) is increasingly recognized in the construction industry for its high design flexibility and the elimination of conventional formwork. However, weak interlayer adhesion remains a significant challenge. The potential of recycled polyethylene terephthalate (PET) fibers for reinforcing 3DPC is being explored, driven by their environmental sustainability and economic advantages. However, there is an inadequate interfacial adhesion between these recycled fibers and the 3DPC matrix. This study investigated the use of dopamine modification to address this issue and enhance the interlayer adhesion of fiber-reinforced 3DPC. Recycled PET fibers were surface-modified using dopamine treatment, forming a polydopamine (PDA) film that improved surface roughness and hydrophilicity. Both unmodified and modified fibers were incorporated into 3DPC at various volume fractions (0.1%, 0.3%, 0.5%). The effects on interlayer adhesion strength, compressive strength, and flexural strength were systematically evaluated and compared. The results showed that the inclusion of 0.3 vol% dopamine-modified fibers resulted in a 22.5% increase in interlayer adhesion strength compared to the control group, and a 14.8% improvement over unmodified fibers at the same content. Additionally, the compressive strength and flexural strength of 3DPC with 0.3 vol% MPET fibers increased by 22.5% and 27.6%, respectively, compared to the control group. Microstructural analysis using SEM and XRD revealed that the dopamine modification significantly improved the interfacial adhesion between fibers and the concrete matrix, explaining the superior performance of modified fibers. This study demonstrates that recycled PET fibers modified with dopamine can effectively enhance the interlayer adhesion of 3DPC. The findings affirm that surface modification techniques can significantly elevate the utility of recycled PET fibers in 3DPC, contributing to the sustainable advancement of construction materials.
研究领域:
土木工程
·
材料科学
·
可持续建筑
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Case Studies in Construction Materials
·
2025
·
IF 6.6
Xiaer Xiahou,Xingyuan Ding,Keke Yu,Cong Lu
This study investigates the sustainable valorization of recycled polyethylene terephthalate (rPET) fibers through dopamine surface modification for enhanced 3D printed concrete (3DPC). Comprehensive tests on flowability, rheology, buildability, and mechanical anisotropy were conducted to assess the impacts of various MPET fiber content (0–0.5 vol%). The results showed that 0.5 vol% MPET fibers significantly increased dynamic yield stress and plastic viscosity by 247.6 % and 200.0 %, respectively, compared to the control group (P-0), while moderately reducing flowability. The 0.3 vol% content was found to be optimal, enhancing maximum printing heights in hollow cylindrical and rectangular structures by 114.8 % and 130 %, respectively, compared to the control. At this content, the 30-minute early compressive strength reached 66.0 MPa. Quantitative analysis revealed a strong correlation (R² > 0.94) between early strength development parameters and buildability performance, with rate of strength gain exerting greater influence than initial strength. Mechanical anisotropy tests showed that MPET fibers significantly enhanced the flexural strength of 3DPC in the Z-direction of printing. Scanning electron microscopy (SEM) analysis confirmed that dopamine modification significantly enhanced the fiber-matrix interface bonding. This research applies modified recycled PET fibers to enhance 3DPC performance while contributing to sustainability efforts in the construction sector, supporting approaches that integrate material recycling with technical innovation.
研究领域:
土木工程
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材料科学
·
可持续建筑
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聚合物复合材料
·
增材制造
✓ 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）