Polymers
·
2024
·Vol. 16
·期 13
·1794
·
IF 4.7
Yang Li,Yang Zhang,Kebo Zhong,Shuguang Liao,Guifeng Zhang
Organ and tissue dysfunction represents a clinically significant condition. By integrating cell biology with materials science, tissue engineering enables the reconstruction and restoration of damaged tissues or organs, offering a noninvasive repair approach. In our study, we replicated the cellular growth environment by utilizing a human umbilical cord-derived decellularized extracellular matrix (dECM) as a modifying agent for the polyethylene terephthalate (PET) polymeric fiber scaffold. This allowed us to create a dECM-coated polyester fiber-based scaffold, PET-dECM, tailored for liver tissue engineering purposes. We effectively produced a decellularized human umbilical cord-derived ECM through a combined decellularization process involving trypsin/EDTA, TritonX-100, and sodium deoxycholate. The application of the dECM coating onto the PET material was accomplished through several steps, such as ester hydrolysis, EDC/NHS-activated crosslinking, and dECM conjugation. The biological performance of the PET-dECM was validated using RG cell culture assays. Notably, the dECM coating significantly improved PET’s hydrophilicity and biocompatibility, thereby aiding cell adhesion, proliferation, and functional differentiation (p< 0.05). It was further found that the hepatocyte function of HepaRG was significantly enhanced on the PET-dECM, which may be attributed to the dECM’s ability to facilitate the restoration of cell polarity. The PET-dECM holds promise as an effective hepatocyte culture carrier and could potentially find application in liver tissue engineering.
研究领域:
组织工程
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生物材料科学
·
细胞生物学
·
肝脏再生
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Ziyi Wang,Changyan Guo,Kefu Wang,Jiang Li,Jide Wang
Upgrading waste PET to prepare metal–organic frameworks (MOF) through chemical recycling provides new ideas and methods for PET recycling treatment and high value-added conversion. In this paper, Cobalt-based metal–organic frameworks (Co-MOF) were prepared from PET by one-pot solvothermal method without adding acids or bases. The prepared Co-MOF was used as a heterogeneous catalyst to catalyze the selective oxidation of ethylbenzene (EB) for the preparation of acetophenone (AP). When only tert-butyl hydroperoxide (TBHP) was used as the oxidizing agent without any additional solvents, 89% EB conversion and 94% AP selectivity were achieved, respectively. Moreover, the catalyst showed excellent stability with no significant deactivation under 5 cycles. In addition, the synthesized Co-MOF-10 also exhibits impressive conversion rates of 96% and 93% in benzyl alcohol and styrene oxidation, respectively. Compared with the Co-MOF prepared by commercial terephthalic acid (BDC), the Co-MOF-10 synthesized via the one-pot method using PET exhibits enhanced cost-effectiveness, environmental sustainability, and superior catalytic performance. The present study establishes a foundation for the conversion of plastic PET into valuable MOF and its subsequent application in C–H bond oxidation.
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Jing Tang,Xiangshuai Meng,Xiujie Cheng,Qingqing Zhu,Dongxia Yan,YuJin Zhang,Xingmei Lu,Chunyan Shi,Xiaomin Liu
The recycling of poly(ethylene terephthalate) (PET) is an important issue for environmental protection and resource conservation. Methanol alcoholysis is the main chemical method commonly used today to degrade PET into high-value monomers. However, conventional methanolysis of poly(ethylene terephthalate) (PET) has problems such as high temperature and high pressure. To further reduce the temperature of methanolysis, in this work, cosolvent-enhanced methanol alcoholysis of PET polyesters was employed and systematically compared with the common methanol alcoholysis process. The results showed that the addition of a cosolvent could significantly lower the reaction temperature and shorten the reaction time compared with conventional methanol alcoholysis. The 100% conversion of PET can be achieved at 120 °C and 2 h. Meanwhile, the mechanisms for choosing acetonitrile as the best cosolvent for the reaction were investigated by combining experimental characterization and DFT simulation calculations and proposed the relevant basis for selecting a cosolvent. The experimental results showed that the addition of the cosolvent could increase the specific surface area of PET, which increased the mass transfer coefficient of methanol and enhanced the mass transfer process of the reaction, thus promoting the contact between methanol and PET and making the reaction easier. In addition, the kinetic study revealed that the addition of the cosolvent acetonitrile reduced the activation energy of the reaction from 106.9 to 90.3 kJ/mol, thus making the reaction easier to proceed. This paper provides a new method for achieving efficient methanolysis of PET.
研究领域:
环境科学
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化学工程
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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
ENZYME AND MICROBIAL TECHNOLOGY
·
2024
·
IF 3.4
Yidi Liu,Zhanzhi Liu,Xuehong Guo,Ke Tong,Yueheng Niu,Zhiyu Shen,Hanzhi Weng,Fengshan Zhang,Jing Wu
The substantial accumulation of polyethylene terephthalate (PET) plastic waste in the environment has exacerbated the issue of plastic pollution. The biodegradation of PET plastics using biological enzymes has garnered considerable attention due to its efficiency and environmentally friendly nature. Nevertheless, the low binding affinity of PET plastics presents a significant limitation to the application of biocatalysts in their degradation. This study endeavors to engineer a fusion protein comprising the anchor peptide LCI, derived from Bacillus subtilis A014, and a thermally stabilized variant of Thermobifida fusca cutinase, D204C/E253C (Tfuc2), with the objective of augmenting its polyethylene terephthalate (PET) degradation efficacy. The findings demonstrate that LCI exhibits a high binding affinity for PET, and the hydrolytic efficiency of the LCI-containing fusion protein is enhanced by a factor of 1.8–34.5 compared to the free Tfuc2 enzyme. The enzymatic characteristics and molecular dynamics simulation outcomes indicate that the improved hydrolytic efficiency of PET may originate from the flexible oscillatory behavior of LCI, which exhibits a high binding affinity for PET. This study presents a novel methodology for the enzymatic degradation of PET plastic waste.
研究领域:
环境科学
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生物化学
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分子生物学
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 4
·1-15
·
IF 2.8
Ou Juhua,Dai Zilin,Kong Zhenxing,Yang Rui
A novel fiber-derived unsaturated polyester resin (UPR) was synthesized through alcoholysis and polycondensation by using PET and hybrid fibers as raw materials. The effects of alcoholysis conditions including alcoholysis time, temperature, initiator concentration, type of alcoholysis agents and amount of hybrid fibers on the alcoholysis behavior were investigated by HPLC, LC–MS and GPC. A comprehensive analysis of the fiber-derived UPR was conducted under different reaction conditions and discussed by FTIR, viscosity, acid value and mechanical properties. HPLC results indicated a strong correlation between the maximal peak area in spectrometry and the yield of main glycol products. It was established that the alcoholysis of PET with hybrid fiber samples mainly obtain alcoholysis monomers and dimers by using glycol as an alcoholysis agent. It was discovered that less alcoholysis products was obtained with lower diethylene glycol. The molecular weight of glycolyzed products are oligomers based on a alcoholysis reaction time reached above 3 h. Under the optimal conditions, PET: EG: zinc acetate = 1.0: 2.0: 0.3 (wt%), 200 ℃, 3 h, PET/PU was completely alcoholyzed and produced oligomers. The performance of liquid UPR and its cured product have been investigated. The UPR prepared by PET/PU was utilized as a fiber source unsaturated resin, meeting the standards for organic artificial stone. This article highlighted the potential usage of PET with hybrid fibers in unsaturated resin.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Dengkun Shu,Lang Wang,Xiaomeng Liu,Shaozhong Luo,Yuan Zhang,Chunzu Cheng,Zhenhua Li,Long Jiao,Shuo Yang,Chenyang Li,Lei Xia,Peng Xi,Bowen Cheng
Inhalable particulate matter poses significant health risks, and current air filtration materials often struggle with efficiently capturing particles smaller than 300 nm and providing real-time feedback on filtration performance. We present the synthesis and characterization of polyethylene terephthalate (PET) nano-woven luminescent fibers (PNWLFs), created through a positive and negative dual high-voltage electrospinning method. The PNWLFs feature a unique nano-woven structure composed of backbone fibers (200–1000 nm) and nanofibers (20–160 nm), which endow them with remarkable mechanical strength, maintaining a breaking force of 117.5 cN and structural integrity under a 138 mm water column. The fibers exhibit excellent breathability and waterproof performance, with a water vapor transmission rate of 4.69 kg/m 2 /day. More importantly, the PNWLFs demonstrate exceptional air filtration capabilities, achieving filtration efficiencies of 99.77 % for PM 5.0 , 99.76 % for PM 2.5 , 99.72 % for PM 1.0 , 99.53 % for PM 0.5 , and 99.40 % for PM 0.3 , with minimal pressure drop of 106 Pa. Additionally, these fibers possess a unique fluorescence-indicating function: the fluorescence intensity decreases in response to increasing particulate matter concentration and the number of filtration cycles, allowing for intuitive visual monitoring of filter performance and particulate levels. These attributes underscore the significant potential of PNWLFs synthesized by this work for advanced air filtration applications and effective air quality monitoring.
研究领域:
材料科学
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环境科学
·
生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jiaqian Li,Chenxiang Li,Huimin Dou,Xiaojin Zhang,Yu Dai,Fan Xia
Salinity gradient (blue) energy has been identified as a promising power source and many technologies have been proposed for its recovery, one of which is nanopore power generators. The single-pore/channel membranes selectively transport ions to achieve efficient salinity gradient power generation. However, porous membranes fail due to concentration polarization. Here, we constructed a heterogeneous membrane by covering ion-selective hydrogel on a polyethylene terephthalate (PET) cylindrical nanochannel porous membrane for the first time to eliminate concentration polarization. The gel layer enhances the ion selectivity of cylindrical nanochannels, making heterogeneous membrane present the ion current rectification effect. The gel layer also avoids the negative impact of concentration polarization on the power generation of porous membranes. The results show that PET porous membrane can hardly generate electricity, but the power density of PET-hydrogel heterogeneous membrane can reach 1.92 W/m 2 under 50 times salinity gradient, which is superior to commercial ion exchange membranes. Our work provides a strategy (ion-selective hydrogel covering) to eliminate concentration polarization of porous membranes, and shows the prospect of cylindrical nanochannels for salinity gradient power generation.
研究领域:
材料科学
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能源工程
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环境科学
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产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2017
·Vol. 75
·期 8
·3445-3458
·
IF 1.43
Ge Ren-Kui,Wang Jing-Wen,Zhang Jian,Ren Hua
To bond untreated polyethylene terephthalate (PET) substrate, a novel UV-/moisture-curable silicone-modified poly(urethane–acrylate) (SiPUA) oligomer was synthesized from isophorone diisocyanate (IPDI), hydroxypropyl silicone oil, 2-hydroxyethyl methacrylate (HEMA), and other additives, and the structure of synthesized oligomer was characterized by Fourier transform infrared (FTIR). Adhesive formulas were developed using the synthesized oligomer, N , N -dimethylacrylamide (DMAA), tetrahydro furfuryl alcohol (THFA) and active amine acted as reactive diluents; 1-hydroxy-cyclohexylphenyl-ketone (C-184) and benzophenone (BP) acted as photoinitiators; dehydrating agent, defoamer, flow agent and nanometer inorganic filler acted as additives. The compositions that can be cured by exposure to ultraviolet and also has capability of curing by exposure to moisture at room temperature showed high adhesion to PET substrate. Furthermore, to obtain higher bonding strength to PET substrate, optimal content of curing agent was researched. It was found that appropriate addition of curing agent to the UV-/moisture-curing formula contributed to a remarkable enhancement in adhesion strength, and the shear strength bonding PET substrate can reach 7 MPa in accordance with ASTM D1002. The degree of wetting and fracture surfaces of the bonded joints were analyzed by means of contact angle measurements, scanning electron microscope (SEM), respectively. Mechanic performance tests including lap shear strength, peel strength, adhesion, and hardness were also carried out.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2022
·Vol. 24
·期 3
·1294-1301
·
IF 11.034
Chumeng Fan,Lei Zhang,Chenxi Zhu,Jingjing Cao,Yunlong Xu,Ping Sun,Guixiang Zeng,Wei Jiang,Quanxing Zhang
Developing efficient metal-free catalyst for the glycolysis of waste poly(ethylene terephthalate) (PET) with ethylene glycol (EG) has attracted increasing attention due to the demanding requirement for high-quality monomer used in regeneration. Herein, a new kind of efficient metal-free catalyst phosphazene base (t-BuP2) was developed through the combination of theoretical prediction and experimental verification approaches, which could achieve 100% conversion of PET and obtain BHET yield (92.7%) comparable to metal-based catalysts. The high efficiency of t-BuP2 comes from the facile generation of EG−, which has a strong ability to break the PET chain through a nucleophilic attack on the carbonyl group. t-BuP2 was selected as the catalyst based on the theoretical evaluation of the proton abstract ability of various bases through natural bond orbital analysis and reaction energy calculations, which could deprotonate EG barrierlessly to produce EG−. Next, the nucleophilic attack of EG− on the carbon atom of the carbonyl group in PET occurs, which greatly weakens the strong C–O bond on the PET chain. Then, the C–O bond was cleaved (rate-determining step) with the Gibbs activation energy and Gibbs reaction energy of 20.2 and −3.8 kcal mol−1, respectively, which was followed by the glycolysis step to produce BHET. Furthermore, t-BuP2 was found to have high regeneration performance, which could be recycled at least seven times without an apparent decrease in activity.
研究领域:
化学工程
·
材料科学
·
催化反应
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiaoli Zhou,Jinhong Deng,Zhe Li,Yun Cheng,Jie Zhou,Min Jiang,Weiliang Dong
Conversion of PET waste into carbon dots (CDs) is an attractive approach to plastic pollution control. However, the preparation of red–yellow CDs is still challenging, and the preparation methods are complex. In this study, a one-pot solvothermal method was developed for the preparation of CDs from PET waste. Through nitrogen source and solvent screening, multicolor (blue–red) CDs with high quantum yield (QY) were prepared. The reaction temperature and catalyst dosage significantly influence the production yield and QY of the CDs. The optimized CD showed a relative yield of 42.7%, a high QY of 47.8%, and a red photoluminescence color. The morphology, crystal structure, surface chemistry, and optical performance of CDs were characterized. The red and yellow fluorescence was mainly due to the molecular state mechanism. White light-emitting diodes with cool and warm white light and a high color rendering index were constructed using yellow and red CDs.
研究领域:
材料科学
·
环境科学
·
光电
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产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Junjun Huang,Chengmei Gui,Haodong Ma,Peng Li,Wangping Wu,Zhenming Chen
Electroless nickel plating provides a rapid and low-cost approach to prepare surface-metallization material, but complicated technology would increase cost and restrict its application. In this work, a new kind of Pd nanoparticle/polymer brush (Pd/ PB ) catalytic solution ( AS ) with a mixture of deionized water, ethanol, 3-aminopropyltriethoxysilane ( KH550 ), PdCl 2 solution was designed to modify and activate polyethylene terephthalate ( PET ) simultaneously. Pd nanoparticle could be adsorbed by PB with –NH 2 , Si–O–Si groups from hydrolyzed KH550. An activated layer with Pd/PB structure established on PET surface after coating AS solution. The generated Ag/PB that served as seed to catalyze the electroless nickel plating. As a result, a facile route for electroless nickel plating was achieved. The maximum effective thickness, rupture work and adhesion of Ni-plated coating were about 0.8 μm, 0.4 J/m 2 , and 5B, respectively, and it maintained considerable conductivity even after 1000 times of cyclical bending. This dependable technology has great potential application in the preparation of metal-polymer material.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Keming Zhu,Lan Yang,Xing Zhou,Xuan Zhang,Yaya Hao,Fan Li,Wanqing Lei,Qi Wang,Guosheng Wang
Recycled waste plastics and their derivatives serve as crucial alternatives to traditional petroleum-based materials, offering a sustainable strategy for mitigating environmental pollution. In this work, we prepared waterborne polyurethane (WPU) with enhanced transparency, heat resistance, and mechanical properties by using the depolymerisation products (GOPs) as a chain extender from waste polyethylene terephthalate (PET) bottles. Additionally, we incorporate dihydroxyethyl disulfide (HEDS) with GOPs co-chain extender imparts significant self-healing capabilities, with strain and tensile strength healing rates of up to 82.57% and 93.72%, respectively. Furthermore, a composite membrane featuring a polypyrrole (PPy) core was further fabricated for flexible strain sensors, which demonstrated excellent dynamic responsiveness, signal stability, and electrical monitoring performance. These findings underscore the promising potential of upcycled waste plastics in the development of advanced materials for flexible electronics and packaging applications.
研究领域:
材料科学
·
环境科学
·
柔性电子
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）