CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Xue Bai,Jiangdong Dai,Yue Ma,Weibai Bian,Jianming Pan
It is highly desirable to develop an efficient adsorbent with large capacity, high selectivity and fast kinetics to recovery virtually inexhaustible lithium ion (Li + ) resources from salt lake brine. In this work, 2-(allyloxy) methylol-12-crown-4 ether (2AM12C4) functionalized polymer brushes (PVBC-g-PCE) from macroporous polymeric high internal-phase emulsion (PolyHIPE) using UV-initiated surface polymerization are synthesized for selectively recovery of Li + . PVBC-g-PCE possesses the advantages of strong physical strength, high density of accessible binding sites, and the size of highly permeatable voids and interconnecting pores is about 8.0–18 µm and 3.3–4.8 µm, respectively, which is a favorable adsorbent for specific capture Li + . PVBC-g-PCE has a maximum capacity at pH 6.0, and the pH-dependent adsorption amount suggests the grafted polymer brushes of 2AM12C4 is the driving force to enhance binding performance. PVBC-g-PCE has a fast adsorption equilibrium within 45 min, and the kinetic results are well-described by the pseudo-second-order model, indicating the specific host-guest interaction between functionalized 2AM12C4 and Li + is the main adsorption mechanism. Moreover, the maximum monolayer binding amount of PVBC-g-PCE is 4.43 mg g −1 , and the strong affinity in the presence of four kinds of interfering ions (i.e. Na + , K + , Mg 2+ , and Ca 2+ ) is also observed, which can also be proved by the high relative selectivity separation coefficient ( α r ) between 3.16 and 7.98. It is expected that this PVBC-g-PCE with abundant easy-to-access specific recognition sites can be applied as a promising adsorbent for effective separation of Li + .
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
POLYMER
·
2022
·
IF 4.432
Ruizhe Lin,Zhengqiao Yin,Yuanyuan Sun,Shengmiao Zhang
This work demonstrates an ex-situ swelling strategy for fabrication of the robust hierarchically porous polyHIPE. Specially, a cationic polyHIPE was prepared by copolymerization of 2-(methacryloyloxy) ethyltrimethylammonium chloride, styrene and divinylbenzene within a water-in-oil (w/o) high internal phase emulsion (HIPE). The hierarchically porous polyHIPE was achieved via simply swelling the polyHIPE in decane at 70 °C, and subsequent removal of the solvent at room temperature . There were large amounts of small pores found on the void wall surface. Compared with the hierarchically porous polyHIPE fabricated with decane as porogen (in-situ swelling, conventional route), the ex-situ swelling strategy endowed the materials semblable complex pore morphology but much less damage to its compression performance. The young's modulus of the hierarchically porous polyHIPE herein was 37% higher than that obtained by a conventional way. Afterwards, the hierarchically porous polyHIPE was utilized as a carrier for AgNPs (AgNPs@polyHIPE). The AgNPs@polyHIPEs exhibited eminent catalytic activity and recyclability for the reduction of the rhodamine B. Thereby, a facile approach for preparation of high strength and hierarchically porous polyHIPE was presented, and the resulted polyHIPE can be an ideal support for noble metal nanoparticle catalysts.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 6
·959
·
IF 3.164
Peijian Sun,Song Yang,Xuehui Sun,Yipeng Wang,Yunzhen Jia,Pingping Shang,Haiying Tian,Guozheng Li,Ruyang Li,Xiaobing Zhang,Cong Nie
Polystyrene-based polyHIPE (polymerized high internal phase emulsion) materials were prepared by the copolymerization of styrene and divinylbenzene in the continuous phase of a HIPE. The resultant polyHIPE materials were found to have an open-cellular morphology and high porosity, and the polyHIPE structure could be well adjusted by varying the water/oil (W/O) ratio and the amount of emulsifier in the HIPE. Cell culture results showed that the resultant polyHIPE materials, which exhibited larger voids and connected windows as well as high porosity, could promote cell proliferation on the 3D scaffold. A 3D cell cytotoxicity evaluation system was constructed with the polystyrene-based polyHIPE materials as scaffolds and the cigarette smoke cytotoxicity was evaluated. Results showed that the smoke cytotoxicity against A549 cells is much lower in the 3D cell platform compared to the traditional 2D system, showing the great potential of the polyHIPE scaffolds for 3D cell culture and the cytotoxic evaluation of cigarette smoke.Keywords:polyHIPE;3D cell culture;cytotoxicity evaluation;cigarette smoke;polystyrene
研究领域:
材料科学
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生物医学工程
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毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Junyang Chen,Zhendong Xie,Riccardo Sapienza,Zhijia Hu,Lorena Ruiz-Pérez,Xiaohe Tian,Giuseppe Battaglia
Random lasers (RLs) represent a distinctive class of laser systems wherein emission arises from multiple scattering events occurring with random orientations within a disorder media. Departing from conventional laser architectures, RL emission is primarily governed by random scattering phenomena, inherently limiting precise control over emission directionality and threshold intensity. Achieving a laser system with finely controllable RL characteristics poses a significant challenge. In this investigation, using polymeric high internal phase emulsion (PolyHIPE) scaffolds, known for their highly customizable surface topographies, is exploredas scattering media platforms for RLs. Dye on the PolyHIPE surface enables interaction with external stimuli, showing sensing potential. Using surface chemical modification techniques, the amphiphilic molecular is grafted onto the HIPE surface and RL behavior is investigated across HIPEs with controllable pore sizes. Notably, a discernible correlation emerges between the RL threshold and the collective influence of polyHIPE platform morphology and gain particle configuration. This heightened adaptability and finely tunable precision in the RL system offer increased versatility, enabling the tailored design of optimal lasers suited for diverse application scenarios. Consequently, these advancements substantially enhance the utility and versatility of RLs in various fields.
研究领域:
材料科学
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光学
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超分子化学
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产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 110
·109253-109258
·
IF 3.289
Yujia Wan,Yanyan Feng,Decheng Wan,Ming Jin
For supported metal nanoparticles, the ligand/support is crucial to their catalytic activity, stability and recyclability. Here we show that a polyamino dendritic amphiphile is a versatile mediator for supported platinum nanoparticles (PtNPs). PEI@PS-EHA, a branched polyethylenimine (PEI) with a shell of poly(styrene-co-2-ethylhexyl acrylate) (PS-EHA), will self-assemble along the interface of a water-in-oil (W/O) emulsion, and stabilize a corresponding high internal phase emulsion (HIPE); after transformation of the HIPE into an open-cellular material termed polyHIPE, PEI@PS-EHA will act as a surface modifier to immobilize PtNPs. The supported catalyst is very fit for reduction reactions because the Pt species hardly leaches in a reductive environment (judged just from the leaching data, the catalyst can be recycled over 10 million times). No ripening of the supported PtNPs is found for over 1500 equivalent cycles, as judged from the apparent rate constant. The ready separation, high activity, extremely low metal leakage and high durability make the catalyst promising.
研究领域:
化学工程
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催化材料
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 38
·e52914
·
IF 3.057
Junzhi Lin,Xianger Xia,Yifei Liu,Zhenchao Luan,Yezhen Chen,Kunkai Ma,Bing Geng,Hui Li
Fluoro-PolyHIPEs with porous structure exhibit an excellent weather resistance for adsorption, separation or catalyst support applications in extreme environments, however, the specific surface area still needs to be improved. In this study, a porous fluorinated material is prepared by using high internal phase emulsion template method, and the porous structure of fluoro-PolyHIPE (F-PolyHIPE) is subsequently excavated and modified by the hypercrosslinking “knitting” method. The “knitting” of micropores in the pore walls of the fluoropolymer is achieved through the Friedel-Crafts alkylation reaction by using dimethoxymethane (FDA) as the external crosslinker. It transforms the macroporous fluoropolymer prepared based on HIPE emulsion template method into hierarchical porous fluoro-PolyHIPE (HCPF-PolyHIPE) with a high specific surface area. The specific surface area of the porous fluorinated material demonstrates an increment from 15.6 m 2 g −1 to 353.2 m 2 g −1 after hypercrosslinking. Owing to the introduction of the micropores and mesopores as well as the enrichment of the fluorine atoms in the polymer network, HCPF-PolyHIPE can be successfully applied for CO 2 adsorption, thus, representing a major achievement of the study. Moreover, HCPF-PolyHIPE exhibits excellent thermal stability as well as acid and alkali resistance, thus, confirming potential application prospects in the fields of oil-water separation and gas adsorption.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2020
·
IF 6.444
Lei Yang,Chen Jiang,Jiaxing Yan,Yifeng Shen,Yi Chen,Lei Xu,He Zhu
Flexible conductive polymer composite foams are promising materials as piezoresistive sensors. Unfortunately, the common solid-templated fabrication method is limited by the scarcity of template structure, which hinders the improvement of sensing performance through rational design of the pore structure. Herein, a series of graphene oxide (GO)-based flexible conductive foams with unimodal and broad pore size distribution, and hierarchically porous structure were fabricated through high-internal-phase emulsions (HIPEs) as liquid templates. The pores were structured by tuning the droplet size distribution of HIPEs, which were regulated by changing the pH and GO loadings. The pore structure had great effect on the mechanical, electrical, and piezoresistive properties of the developed foams. Compared to foams with either unimodal or broad pore size distribution, the hierarchically structured foams exhibited more than 50% increase in Young’s modulus, more than 30% improvement in pressure sensitivity, and broadened pressure responsive ranges up to more than 200 kPa.
研究领域:
材料科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2019
·Vol. 4
·期 6
·1136-1144
·
IF 3.935
Mengjie Wang,Meng Wang,Yun Zhu,Shengmiao Zhang,Jianding Chen
Enzyme functionalized porous beads were fabricated through covalently immobilizing Candida antarctica lipase B (CALB) onto high internal phase emulsion (HIPE) templated poly(glycidyl methacrylate) (PGMA) beads. These millimeter-sized beads were prepared by photopolymerizing the continuous phase of HIPE drops and then removing the dispersed phase. By covalently coupling the lysine residues of CALB to the epoxy groups from GMA, a series of enzyme immobilized polyHIPE beads were produced, with an enzyme loading of up to 0.18 g g−1 carrier. The resulting immobilized enzyme was highly stable to temperature and storage and could be recycled multiple times. The immobilized enzyme maintained 85% residual activity after 5 reaction cycles and 60% residual activity after 30 days of storage. The enzymatic esterification between hexanol and hexyl hexanoate had a conversion rate of up to 95%, showing that the enzyme immobilized beads were a good enzyme catalyst.
研究领域:
生物技术
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材料科学
·
酶学
✓ 已验证
产品关联
DOI
高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
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2016
·
IF 2.371
Guihua Ruan,Zhenwei Wu,Yipeng Huang,Meiping Wei,Rihui Su,Fuyou Du
A large-scale high-efficient enzyme reactor based on polymerized high internal phase emulsion monolith (polyHIPE) was prepared. First, a porous cross-linked polyHIPE monolith was prepared by in-situ thermal polymerization of a high internal phase emulsion containing styrene, divinylbenzene and polyglutaraldehyde. The enzyme of TPCK-Trypsin was then immobilized on the monolithic polyHIPE. The performance of the resultant enzyme reactor was assessed according to the conversion ability of N α -benzoyl- l -arginine ethyl ester to N α -benzoyl- l -arginine, and the protein digestibility of bovine serum albumin (BSA) and cytochrome (Cyt-C). The results showed that the prepared enzyme reactor exhibited high enzyme immobilization efficiency and fast and easy-control protein digestibility. BSA and Cyt-C could be digested in 10 min with sequence coverage of 59% and 78%, respectively. The peptides and residual protein could be easily rinsed out from reactor and the reactor could be regenerated easily with 4 M HCl without any structure destruction. Properties of multiple interconnected chambers with good permeability, fast digestion facility and easily reproducibility indicated that the polyHIPE enzyme reactor was a good selector potentially applied in proteomics and catalysis areas.
研究领域:
生物化学
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催化工程
·
蛋白质组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2018
·
IF 2.975
Yun Li,Chao Gong,Ting Zhang,Xinhui Feng,Xiaolong Zhou,Chenglie Li
Porous polymer support beads modified by a silicone resin with bifunctional groups were prepared by using High Internal Phase Emulsion (HIPE) templated method. Their surface properties and morphological characteristics were investigated. The effect of silicone resin content has been highlighted. When the content of the silicone resin was 30%, the support exhibited a relatively higher hydrophobicity (contact angle was 118.8°) and suitable pore diameter distribution. The Sulfate Reducing Bacteria (SRB) loading biofilm/support and its desulfurization experiments for the sewage with 1000–4000 mg SO 4 2− /L have been performed, and the result shows that the polymer bead support has given higher sulfate reducing rates than that of the traditional active carbon (AC) beads and the maximum sulfate reducing rate reached to 84.56% for the wastewater with 1000 mg SO 4 2− /L after 12 h.
研究领域:
环境工程
·
生物技术
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2015
·
IF 0
Wang Fa Xu,Fa Meng Sun,Jing Bo Liu,Xiao Fang Li,Fa Ai Zhang
A series of porous poly(styrene-divinylbenzene) monoliths (polyHIPE) was synthesized by high internal phase emulsions (HIPE). The effects of the ethanol contents on the microstructure of the polyHIPE were characterized by scanning electron microscopy and mercury intrusion porosimeter. The adsorption and release behaviors of the polyHIPE for a monomer mixture consisting of dicyclopentadiene (DCPD) /styrene (St) (DS, mass ratio of 9/1) were investigated. The polymerization of the mixture DS within pores of the polyHIPE was studied. The results showed that the microstructure of the polyHIPE was significantly influenced by the ethanol content. The increase of ethanol in the HIPE increased the internal pore diameter and decreased the pore volume of the polyHIPE, thus decreased the DS absorption and increased the release rate. The DS monomer can enter the pores(cavities, windows) and fill the original holes after the polymerization. Compared with conventional polymerization of DCPD/St, the poly(DCPD/St) (pDS) obtained from confined spaces possess higher molecular weight, broader molecular weight distribution, and higher Tg. As the pore diameter increased, the effect of space confinement reduced, and the performances of pDS were closed to that prepared by conventional polymerization.
研究领域:
材料科学
·
化学工程
·
高分子化学
✓ 已验证
DOI
LANGMUIR
·
2023
·
IF 3.9
Yanyu Chen,Jie Li,Yingfei Yang,Junjie Yang,Huaijun Lin,Qiwei Wang,Xusheng Yang,Yuying Meng,Wei Li,Zhidan Lin,Peng Zhang
Increasingly, oil spills and industrial discharges are wreaking havoc on the water environment; in order to efficiently separate oil and water from sewage containing oil or organic solvents, a novel porous polymer (P(EHA-co-BA)) was prepared by Pickering high internal phase emulsion (HIPE) template method. To obtain polyHIPE with better oil/water separation capacities, octadecyltrichlorosilane (OTS)-modified carbon nanotubes (CNTs) and surfactants were used as costabilizers for HIPE, which improved the stability of HIPE as well as the mechanical properties and the separation efficiency of polyHIPE. In the presence of 1 wt % OTS-CNT adding in the oil phase, 1%OTS-CNT polyHIPE has high porosity (92.21%), favorable hydrophobicity (a water contact angle of 128°), and excellent mechanical properties. As a result, 1%OTS-CNT polyHIPE has high absorption of oils and oily solvents, e.g., dichloromethane up to 36 g/g, and maintains an absorption efficiency of >97% after 20 reapplications. In the formulation of polyHIPE, cinnamaldehyde (CA) has been added to provide superior antibacterial properties against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). It appears that the novel polyHIPE proposed in this work is a reusable antibacterial porous polymer with promising applications for oil–water separation.
研究领域:
材料科学
·
环境工程
·
化学工程
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）