JOURNAL OF MOLECULAR LIQUIDS
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2024
·
IF 5.3
Yutong Liu,Xinpei Yuan,Mengqi Xie,Zhidong Liu,Xiaohui Zhao,Hui Cao,Huihui Wang,Zhou Yang,Dong Wang,Wanli He
In this study, we propose a simpler method to fabricate single-layer polymer cholesteric films with reflective bandwidth over 1500 nm instead of the previous multilayer films. We add polymerizable chiral compounds and non-polymerizable chiral compounds with the same rotation direction into the liquid crystal mixing system. Due to the presence of photoinitiators and UV-absorbing dyes, when UV light irradiates the polymerization, the polymerizable monomers, including the polymerizable chiral compounds, are rapidly polymerized in the near-light side, and the non-polymerizable monomers, including the non-polymerizable chiral compounds and partial monoacrylate monomers, do diffusion movement towards the far-light side, and after the anchoring action of the polymer network, the formation of the small-large-small pitch gradient distribution is realized, which results in the broadband reflection. In the paper, the effect of multiple factors on the reflection broadband of the film is explored, and the polymer-stabilized cholesteric liquid crystal (PSCLC) film with a reflection bandwidth of 1572 nm is successfully prepared, which is demonstrated to have many desirable properties, including thinness and flexibility. The flexible CLC films reported in this study are expected to be promising prospects for several applications such as shielding infrared devices, energy-efficient windows for automobiles, and modern building facades.
研究领域:
材料科学
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光学
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高分子化学
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纳米技术
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jun Wu,Xinhua Liu,Xiang-Yun Du,Ji-Dong Liu
Elastic ionogel fibers have scored tremendous achievements with the rapid development of artificial intelligence and electronic techniques. However, conventional elastic ionogel materials usually suffer from poor mechanical strength, high cost, high toxicity, and high pollution, which severely restrict their practical applications. To meet this challenge, we design a biobased elastic ionogel fiber by using eco-friendly polymerizable deep eutectic solvents (PDESs) as the substrate and all-natural milk as the reinforcement. This milk-based PDES ionogel fiber exhibits remarkable mechanical properties (7.52 MPa of tensile stress) due to the intrinsic hydrogen bonding interactions between the PDES molecular network and the milk protein, which is three times as much as that of the pure PDES fiber. Meanwhile, this milk-based PDES ionogel fiber also shows extreme-environment resistance, which can maintain most of the mechanical properties and flexibility after being treated at −60 to 60 °C. More importantly, this milk-based PDES ionogel fiber possesses a self-healing property under high humidity and a strain-sensing behavior, which can be utilized to monitor human motion signals. This work not only developed a high-performance elastic ionogel fiber through a low-cost and green manner but also promoted the fundamental research and industrialization of flexible wearable electronic materials.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 4
·787
·
IF 4.6
Shuaihua Liu,Tian Yao,Donghui Xia,Quan Liu,Guanghui Tian,Yang Liu
Low-molecular-mass gelators (LMMGs) as stabilizers for gel emulsions offer numerous advantages, such as low usage, functionalizability, and insensitivity to phase ratio. Using LMMGs as stabilizers is one of the effective strategies for preparing gel emulsions. Currently, developing LMMGs and stable gel emulsion systems in a rapid and convenient manner remains a challenge. To cope with the challenge, this study aims to develop a simple and efficient gel emulsion preparation method based on LMMGs. In this study, a cholesterol-based star-shaped derivative (CSD) was designed and synthesized as an LMMG. Based on gelation experiments, a high internal phase W/O gel emulsion system (H2O/CSD-poly(oligo)-dimethylsiloxane/dichloromethane) was successfully developed and stabilized synergistically by the stabilizer (CSD) and the crosslinker (poly(oligo)-dimethylsiloxane with two olefinic bonds at its ends, D-PDMS). The results demonstrate that the synergistic interaction between CSD and D-PDMS is critical for the formation of the gel emulsion. Building on the original gel emulsion system, two novel in situ polymerizable gel emulsion systems (H2O/CSD-D-PDMS/dichloromethane-tert-butyl methacrylate and H2O/CSD-D-PDMS/dichloromethane-N-tert-butyl methacrylamide) were successfully developed by introducing suitable amphiphilic (hydrophilic/lipophilic) polymerizable monomers. This study found that changes in the amphiphilicity of the introduced monomers significantly affected the stability and microscopic morphology of the gel emulsion system. The findings indicate that constructing a hydrophilic/lipophilic balanced system via the synergistic action of stabilizers and crosslinkers in a solvent system, followed by the introduction of polymerizable monomers, is a simple and efficient method for rapidly developing novel polymerizable gel emulsions. These new polymerizable gel emulsions lay the foundation for the subsequent preparation of porous organic polymers (POPs).
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
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
·
2024
·
IF 2.2
Hou Xu,Chang Le,Zheng Chenxuan,Liu Huarong
High internal phase emulsions (HIPEs) are commonly stabilized by a large amount of surfactants that should be removed after the polymerization of the continuous phase, and the resulting polyHIPEs from W/O HIPEs are usually brittle and chalky. Herein we report on an amphiphilic polymerizable polyurethane (PPU) macromolecular surfactant synthesized by polyaddition reaction of diisocyanates and polyols, which can well stabilize up to 88% internal phase volume of W/O HIPE with a content of only 5 wt% based the oil phase. Compared with the HIPEs stabilized by traditional surfactant Span 80, HIPEs stabilized by PPU at either room temperature or 70 °C are much more stable owing to the increased viscosity which can inhibit droplet coalescence. Moreover, the resulting polyHIPEs not only have several times higher mechanical properties than those stabilized by Span 80 but also have higher elasticity. The effects of concentration of PPU on the morphology and mechanical properties of the resulting polyHIPEs were investigated. It was found that with the increase of PPU content, the average void and window sizes decreased, while the compression strength increased. Cyclic compression tests were performed to examine reversible compressibility and durability of these polyHIPEs. Graphical abstract The polymerizable polyurethane macromolecular surfactant (PPU) synthesized through the polyaddition reaction of diisocyanates and polyols can solely stabilize high internal phase emulsions (HIPEs), and highly interconnected macroporous polymer produced by the polymerization of HIPE stabilized with PPU, known as polyHIPE, can withstand large deformation compression with no visible cracks.
研究领域:
材料科学
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聚合物化学
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胶体与表面化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Chuang-Wei Gu,Guang-Chang Xu,Jia-Hui Xin,Yu-Ren Xue,Shu-Hui Ma,Jia-Hang Weng,Chao Zhang,Zhi-Kang Xu
Ionic liquids (ILs)-based separation membranes have been recognized as appealing platforms to achieve preferential CO 2 capture. Despite remarkable achievements, these ILs-based membranes are largely restricted by the inferior perm-selectivity of CO 2 and the use of high-cost, difficult-to-scale ILs. Here, a new kind of liquid-free, solid-state ionogel membranes (IGMs) is presented by virtue of green, low-cost, and mass-producible polymerizable deep eutectic solvent consisting of acrylic acid and choline chloride. Leveraging Janus membranes as confined reactor, polymerizable deep eutectic solvent can be well confined within the wettability-compatible layer of Janus membranes and be rapidly polymerized into thickness-tunable liquid-free, solid-state ionogel as CO 2 -philic selective network. It is shown that the selective layer thickness of IGMs can be decreased by 10 folds over counterpart meanwhile possessing an enhanced breakthrough pressure, enabling a high and stable CO 2 permeance even under repeated mechanical friction and bending. Moreover, these IGMs take advantage of their liquid-free, solid-state dense CO 2 -philic network to give an extraordinary CO 2 /N 2 selectivity as high as 150, transcending most of ILs-based membranes (< 60). The material building block and toolkit developed in this work can unleash the potential of polymerizable deep eutectic solvent and beyond in the field of gas separation membranes.
研究领域:
膜科学
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气体分离
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高分子化学
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环境工程
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材料科学
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产品关联
DOI
高影响因子
STAR Protocols
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2022
·
IF 0
Ziman Chen,Yahui Zhang,Qingmei Song,Liang Ma,Yongqin Lv
Summary Mixed-matrix membranes (MMMs) comprising polymer matrices and metal-organic frameworks (MOFs) provide efficient and economic CO 2 separation. One major challenge is to construct continuous and defect-free MMMs due to poor MOF/polymer compatibility. Here, this protocol describes the step-by-step details for synthesis of desired linkers that allow the fabrication of new polymerizable MOFs containing vinyl groups (BUCT MOFs) and the preparation procedures of defect-free MMMs with enhanced MOF/polymer interfacial adhesion and boosted gas separation performances. For complete details on the use and execution of this profile, please refer to Chen et al. (2021) .
研究领域:
材料科学
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化学工程
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膜技术
✓ 已验证
DOI
PubMed
Polymer Chemistry
·
2013
·Vol. 4
·期 14
·3963-3967
·
IF 5.231
Guoyan Zhang,Jibin Zhang,Bai Yang
Polymerizable ZnS nanoparticles (NPs) were fabricated in N,N′-dimethylacrylamide via a novel facile and effective strategy, and a series of transparent bulk nanocomposites were also prepared based on such polymerizable ZnS NPs. The structure, surface chemistry and distribution of the polymerizable ZnS NPs were studied by powder XRD, FTIR, 1H NMR and TEM. The results indicated that we have successfully synthesized the polymerizable ZnS NPs with an average size of 4–5 nm by the innovatory method and the surface of these NPs were terminated with phenyl and vinyl groups which made sure of the good dispersion in the monomers. The polymerizable ZnS NPs could be easily polymerized with the monomers and fabricated a series of bulk nanocomposites. The obtained bulk nanocomposites (3 mm) exhibit good transmittance in the visible range and its refractive index are in the range from 1.527 to 1.598 in 632.8 nm by changing the content of the polymerizable ZnS NPs from 0 to 11.1 wt%. This novel strategy opens a new gate to produce transparent bulk nanocomposites with tunable refractive indices for potential optical device applications.
研究领域:
材料科学
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纳米技术
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光学
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产品关联
DOI
高影响因子
POLYMER INTERNATIONAL
·
2016
·Vol. 66
·期 1
·92-97
·
IF 2.414
Junzhi Li,Jianhua Liu,Liqun Xu,Jiucun Chen
Nowadays, carbon dots (CDs) have aroused widespread interest due to their chemical stability, biocompatibility as well as low toxicity. Herein, polymerizable CD monomers were synthesized through amidation between hydrophobic CDs and methacryloyl chloride, which has emerged as a facile method for preparing various fluorescent CD monomers. The fluorescent polymerizable CDs were copolymerized with N- isopropylacrylamide (NIPAM) to form thermoresponsive fluorescent nanoparticles. The poly(NIPAM) (PNIPAM) grafted hydrophobic CDs (CDs- g -PNIPAM) have excellent dispersivity in water, rendering hydrophobic CDs with fluorescence properties in aqueous media. Moreover, CDs- g -PNIPAM nanocomposites show a remarkable thermoresponsive behavior, and the fluorescence intensity decreases progressively with increase in temperature. Cytotoxicity tests show that CDs- g -PNIPAM nanocomposites have great biocompatibility. When the CDs- g -PNIPAM nanocomposites were cultured with HaCaT cells at a concentration of 2000 µg mL −1 , cell viability was maintained over 85%. Benefiting from the copolymerization of NIPAM, the excitation-independent fluorescence of CDs- g -PNIPAM nanocomposites can be used for cellular labeling and show long-term biostability in a cellular environment. © 2016 Society of Chemical Industry
研究领域:
材料科学
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纳米技术
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生物医学工程
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细胞生物学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Haihua Wang,Bei Li,Guiqiang Fei,Yiding Shen,Ke Zhu
We reported herein the synthesis of block copolymers and their application in the in-situ emulsion polymerization of waterborne poly (urethane-acrylate) (WPUA) nanoemulsions based on phase inversion process. The polymerizable surfmers containing terminal unsaturated double bonds (MSA-r) were successfully synthesized via catalytic chain transfer polymerization (CCTP). Random copolymer (MSA-t) prepared through radical polymerization was utilized as control. The structure, surface tension and aggregation behavior of surfmers were characterized. The phase inversion, formation and stability of WPUA nanoemulsions were systematically investigated. Effects of MSA-r surfmer content and BMA/MMA ratio on the water resistance and thermal stability of the corresponding films were also discussed. It was found that the phase inversion mechanism of PUA prepolymer in the presence of MSA-r surfmers is different from conventional polyurethane prepolymer. The addition of MSA-r and MSA-t surfmers alters the rheological behaviors of PUA prepolymer via PUA-surfmer interactions, as well as the phase inversion process. Compared with WPUA/MSA-t emulsion, WPUA/MSA-r nanoemulsion displayed improved stability at higher solid content. The minimum particle size of WPUA/MSA-r nanoemulsion was 88.7 nm and kept almost constant after 12-month storage, while the particle size of WPUA/MSA-t emulsion was 131.3 nm and increased to 178.9 nm. Moreover, the WPUA/MSA-r film possessed improved water resistance and thermal stability.
研究领域:
高分子化学
·
胶体与界面科学
·
材料化学
·
纳米材料
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功能高分子
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水性涂料
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聚合物乳液
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2014
·Vol. 6
·期 19
·7875-7882
·
IF 1.938
Jing Jia,Shujuan Liu,Yong Guo,Shuai Wang,Xia Liu
In this work, a nanoporous array anodic titanium was selected as a fiber substrate because of its high surface-to-volume ratio, easy preparation, mechanical stability, and rich titanol groups on its surface that can anchor other active groups. Then, a polymerizable ionic liquid monomer pair, (1-vinyl-3-hexadecylimidzolium)-(p-styrenesulfonate) ([C16VIm]+SS−), was synthesized and used for the chemical modification of the mercaptopropyl-functionalized nanoporous anodic titania support using a surface radical chain-transfer addition. A homogeneous and porous coating with a thickness of about 7 μm was achieved. The main advantage of this copolymerization method over the conventional single-ion polymerization is its high stability under harsh conditions, like high temperatures, as well as acidic, alkaline and high ionic strength solutions. Combined with gas chromatography-a flame ionization detection (GC-FID), the poly[C16VIm]+SS− was used as a sorbent material for the direct immersion SPME of four types of compounds, including polycyclic aromatic hydrocarbons, hydrophobic phenols, non-volatile phthalate esters and parabens, in an aqueous solution. The analytical performance of the proposed method was investigated under the optimum extraction conditions (content of NaCl, 20% (w/v); extraction temperature, 70 °C; and extraction time, 55 min). Calibration ranges were 0.1–400 μg L−1 for four hydrophobic phenols, anthracene (Ant) and fluoranthene (Flt), 0.15–600 μg L−1 for dibutyl phthalate (DBP) and di-(2-ethyl-hexyl) phthalate (DEHP), and 0.5–2000 μg L−1 for ethylparaben (EPN) and propylparaben (PPN). The as-established method showed good linearity with good correlation coefficients (R = 0.993–0.999) and low detection limits in the range of 0.003 to 0.156 ng mL−1 (S/N = 3). In addition, the poly[C16VIm]+SS−-SPME fiber showed good precision (3.2–13.5%) and repeatability between fiber and fiber (9.1–19.6%). Finally, soil extract sample were analyzed and satisfactory results were obtained.
研究领域:
分析化学
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材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yunpeng Gao,Xin Tian,Xueru Xiong,Yushi Wang,Wen Huang,Xuetao Shi,Yong-Guang Jia,Zhong-Kai Cui
The catechol moiety found within mussel proteins plays a pivotal role in enhancing their adhesive properties. Nonetheless, catechol compounds, such as dopamine (DOP) derivatives, are susceptible to oxidation, leading to the formation of q0uinone. This oxidation process poses a significant challenge in the development of DOP-based hydrogels, hampering their adhesion capabilities and hindering polymerization. To protect DOP moieties from oxidation, DOP and N-(3-aminopropyl)methacrylamide (AMA) moieties were grafted onto the side groups of biocompatible poly(glutamic acid) (PGA). Subsequently, the DOP unit, serving as a second guest, would be captured by a polymerizable rotaxane of cucurbituril (CB[n]), in which the host molecule CB[8] complexed with the first guest, polymerizable methyl viologen (MV), forming a protective function and dynamic cross-linking. Upon exposure to light curing, a composite network emerged through the synergy of covalent cross-linking and supramolecular host-guest complexation of DOP with CB[8]. The generated complexation between DOP and CB[8] could protect the DOP moieties, resulting in photocured hydrogels with exceptional adhesive strength and remarkable tensile capabilities. Moreover, 3D printing technology was used to create various models with these DOP-based hydrogels, demonstrating their promising applications in future.
研究领域:
材料科学
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化学
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生物医学工程
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高分子科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 44
·37765-37772
·
IF 3.289
Yang Hu,Boyuan Shen,Botian Li,Min Xu,Guoqiang Jiang,Chengyou Kan
A novel polymerizable amphiphilic purple dye, 4-((4-(p-toluidino)anthraquinone-1-yl)oxy)-N-(2-(methacryloyloxy)ethyl)-N,N-dimethylbutan-1-aminium bromide (TAQMAB), was first designed and synthesized, and then used to prepare cationic covalently purple copolymer latexes through semi-continuous emulsion polymerization using water-soluble 2,2′-azobis(2-methylpropionamide) dihydrochloride (AIBA) as initiator. The chemical structure and properties of the dye were confirmed and characterized. Results showed that the critical micelle concentration and the hydrophilic lipophilic balance of TAQMAB were 975 mg L−1 and 32.8, respectively. The amphiphilic structure of TAQMAB gave the dye considerable water solubility and an ability to migrate from the monomer droplets into the latex particles during emulsion polymerization, which overcame the limitation of solubility, dye conversion, color depth of the latexes, and made the polymerization proceed smoothly. The total monomer conversion decreased gradually with dye amount increasing, while the dye still kept a relatively high conversion when an adequate amount of AIBA was used. Both the total monomer conversion and the dye conversion decreased with AIBA amount decreasing. The light fastness of the covalently colored film was significantly enhanced compared with the noncovalently colored one, which was ascribed to electrons flowing through the polymer chains.
研究领域:
聚合物化学
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材料科学
·
染料化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）