Journal of Materials Chemistry C
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2018
·Vol. 6
·期 15
·4131-4139
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IF 5.976
Shaobo Tan,Jie Xiong,Yifei Zhao,Jingjing Liu,Zhicheng Zhang
The grafting of poly(methacrylate ester) or polystyrene onto the side chain of poly(vinylidene fluoride) (PVDF)-based fluoropolymers maintains their high energy density and remarkably reduces the energy loss due to the confinement (or insulation) effect, which has potential application in high-pulse capacitors. The graft copolymers were previously synthesized from C–Cl bonds via the transition metal-catalyzed atom transfer radical polymerization (ATRP) process. To overcome the negative influence of the residual metal ions from the catalyst on the dielectric properties of the resultant copolymers, in the present contribution, a facile strategy is reported for photo-mediated ATRP using organic-based photoredox catalysts to directly synthesize a poly(methyl methacrylate) (PMMA)-grafted copolymer from the commercial poly(vinylidene fluoride-co-chlorotrifluoroethylene) (P(VDF–CTFE)). The graft copolymerization is efficiently activated and deactivated with light and exhibits first-order kinetics. The detailed structural information of the graft copolymer, including average grafting density and side chain length, are also determined by converting the uninitiated Cl atoms into H atoms. When compared with the traditional Cu-catalyzed ATRP process, the current photo-induced ATRP method used for preparing the graft copolymer results in improved dielectric performances such as reduced dielectric loss at low frequency and high temperature, decreased conduction loss, and enhanced breakdown strength.
研究领域:
材料科学
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高分子化学
·
电介质物理
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Liucheng Mao,Xinhua Liu,Meiying Liu,Long Huang,Dazhuang Xu,Ruming Jiang,Qiang Huang,Yuanqing Wen,Xiaoyong Zhang,Yen Wei
Aggregation-induced emission (AIE) dyes have recently been intensively explored for biological imaging applications owing to their outstanding optical feature as compared with conventional organic dyes. The AIE-active luminescent silica nanoparticles (LSNPs) are expected to combine the advantages both of silica nanoparticles and AIE-active dyes. Although the AIE-active LSNPs have been prepared previously, surface modification of these AIE-active LSNPs with functional polymers has not been reported thus far. In this work, we reported a rather facile and general strategy for preparation of polymers functionalized AIE-active LSNPs through the surface-initiated atom transfer radical polymerization (ATRP). The AIE-active LSNPs were fabricated via direct encapsulation of AIE-active dye into silica nanoparticles through a non-covalent modified Stöber method. The ATRP initiator was subsequently immobilized onto these AIE-active LSNPs through amidation reaction between 3-aminopropyl-triethoxy-silane and 2-bromoisobutyryl bromide. Finally, the zwitterionic 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) was selected as model monomer and grafted onto MSNs through ATRP. The characterization results suggested that LSNPs can be successfully modified with poly(MPC) through surface-initiated ATRP. The biological evaluation results demonstrated that the final SNPs-AIE-pMPC composites possess low cytotoxicity, desirable optical properties and great potential for biological imaging. Taken together, we demonstrated that AIE-active LSNPs can be fabricated and surface modified with functional polymers to endow novel functions and better performance for biomedical applications. More importantly, this strategy developed in this work could also be extended for fabrication of many other LSNPs polymer composites owing to the good monomer adoptability of ATRP.
研究领域:
材料科学
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生物医学工程
·
纳米技术
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2019
·
IF 3.621
Jiayan Shi,Yifei Zhou,Jiapei Jiang,Tingting Pan,Zhipeng Mei,Jiaxing Wen,Cheng Yang,Zijin Wang,Yanqing Tian
New oxygen and pressure sensitive paints (PSPs) with four-arm polymeric structures were prepared by using a kind of controlled living polymerizations – atom transfer radical polymerization (ATRP). The polymers composing of poly(isobutyl methacrylate)- co -poly(trifluoroethyl methacrylate)s (PolyIBMA- co -PolyTFEM)s act as the matrices for the platinum porphyrin-based phosphorescence probes, which were copolymerized in the matrices. The polymers were characterized by using 1 H NMR, 19 F NMR, and GPC to demonstrate their successful preparation. The influence of polymer structures on sensing activity including the sensitivity and response time to oxygen and/or pressure was investigated. Results showed that copolymers with suitable compositions (herein P3 ) can have highest sensitivity. Polymer structure’s influence on response time to oxygen was also investigated. For increasing the polymer’s surface area for further improving sensing sensitivity, electrospinning method was used for preparing films with micro-spherical or fibrous structures. The morphologies of electrospinning coated films were observed by SEM. Results showed that electrospinning coated films can respond much better to oxygen and pressure than their corresponding sprayed plates. This is the first time to apply the controlled living polymerization approach to prepare PSPs with multi-arm structures, which will broaden the PSP functional materials’ design strategy.
研究领域:
材料科学
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化学工程
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传感器技术
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2022
·
IF 5.546
Yejun Luo,Zheng Li,Yufang Chen,Tao Jin
Hydrophobic modification of cellulose via activation synergistic activators regenerated by electron transfer (ARGET) atom transfer radical polymerization (ATRP) method has been proved to effectively improve the long-term hydrophobic stability of cotton filter fabric. However, the extra activation process will inevitably increase the complexity of the reaction process. In this work, carbon disulfide (CS 2 ) was incorporated into the ARGET-ATRP reaction system to avoid adding redundant reaction links. Specifically, the activation and acyl bromination processes were combined, and then the graft modification reaction between the acyl bromide cotton filter fabric and 1-octadecene (1-Oct) was realized by the ARGET-ATRP. The effect of the combined process on the hydrophobic modification reaction and performance of cotton filter fabric was investigated. The results showed that, under the optimum dosages of activator CS 2 , acyl bromide reagent BiB and monomer 1-Oct, the activator CS 2 was directly incorporated into the acyl bromination process. And after ARGET-ATRP Hydrophobic modification, the initial water contact angle (CA) of the obtained hydrophobically modified cotton filter fabric reached 145.0°, the residual contact angle (RCA) after the water droplet retention time of 210 min could still arrive at 125.4°, showing a corresponding attenuation rate (Dr) of 13.5%, which suggested excellent hydrophobicity and durability. Notably, the hydrophobically modified cotton filter fabric also exhibited excellent resistance to chemical corrosion, abrasion resistance and ultrasonic stripping resistance. Furthermore, this hydrophobically modified filter fabric can efficiently separate different types of oil–water mixtures. Even after 12 cycles of oil–water separation process, the separation efficiency still exceeded 95%, and the CA of the modified filter fabric before and after separation was basically unchanged.
研究领域:
材料科学
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纺织工程
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高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
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2024
·
IF 2.1
Xueyi Chang,Yongfu Qiu,Zhiyu Cheng,Guiping Tan,Qun Luo,Muqing Chen
This study reports the synthesis of a novel block copolymer, PEO-PFc-PCA, comprising cinnamic acid and ferrocene units via Atom Transfer Radical Polymerization (ATRP), and its application as a positive electrode material in pseudocapacitors. Ferrocene functions as redox-active sites for energy storage, while cinnamic acid, when crosslinked under UV light, forms a nano-network that reduces ferrocene leaching, thereby enhancing the stability and lifespan of the pseudocapacitors. Comprehensive structural characterization, including nuclear magnetic resonance and UV–visible spectroscopy, was conducted on PEO-PFc-PCA. Electrochemical tests—cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy—revealed that UV crosslinking improved the electrochemical performance, indicated by a slight increase in current and extended charging plateaus. Specific capacitance and energy density increased by 10 % post-crosslinking, demonstrating improved energy storage capacity. Nyquist plots showed reduced internal and charge transfer resistance after crosslinking, enhancing the electrochemical pathway. Stability tests indicated that crosslinked PEO-PFc-PCA retained 90.1 % of its capacitance after 3000 cycles, compared to 86.6 % pre-crosslinking, highlighting its superior longevity. This research presents a promising approach to enhancing pseudocapacitor energy storage through cinnamic acid photopolymerization, potentially benefiting broader pseudocapacitive electrode designs.
研究领域:
材料科学
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电化学
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能量存储
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DOI
高影响因子
POLYMER COMPOSITES
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2025
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IF 4.7
Changjie Yin,Boyu Wang,Huimin Li,Dezhong Yin,Qiuyu Zhang
The vinyltriethoxysilane grafted styrene-butadiene rubber (SBR-g-VTES) was successfully synthesized using the ARGET-ATRP (electron transfer activated regenerative atom transfer radical polymerization) method in latex. Then, SBR-g-VTES/SiO 2 composites were prepared without a silane coupling agent. The effect of various reaction conditions on the grafted yield, properties, and morphology of SBR-g-VTES was investigated, and the influence of different silica amounts on the properties of SBR-g-VTES/SiO 2 composites was also discussed. The polymerization process conformed to the characteristics of active/controllable. The reaction condition SBR/CuBr 2 /TPMA/VC (100.00/0.0010/0.0015/0.30) was chosen. The tensile strength of SBR-g-VTES reached 4.20 MPa, and the tear strength reached 40.00 MPa. When the amount of silica was 30 wt%, the bound rubber, tensile strength, tear strength, and hardness of SBR-g-VTES/SiO 2 composites reached 78%, 12.30 MPa, 97 MPa, and 91 shore A, respectively. The Akron abrasion is 0.03 cm 3 ; a good balance between the wet sliding resistance and the low rolling resistance of the material can be realized. Meanwhile, SEM analysis results showed that the compatibility between silica and the rubber matrix was greatly improved by grafting VTES; SiO 2 was uniformly dispersed in the SBR matrix with a regular round shape.
研究领域:
高分子科学
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材料工程
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化学合成
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纳米复合材料
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橡胶技术
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
·
IF 4.233
Qiang Huang,Meiying Liu,Liucheng Mao,Dazhuang Xu,Guangjian Zeng,Hongye Huang,Ruming Jiang,Fengjie Deng,Xiaoyong Zhang,Yen Wei
Monodispersed SiO 2 particles functionalized with cationic polymers poly-((3-acrylamidopropyl)trimethylammonium chloride) (PAPTCl) were prepared using mussel inspired surface modification strategy and surface initiated atom transfer radical polymerization (SI-ATRP). Fourier transform infrared spectroscopy, transmission electron microscope, thermogravimetric analysis, X-ray photoelectron spectroscopy, and zeta potential were employed to characterize these SiO 2 samples. The adsorption performance of the functionalized SiO 2 (donated as SiO 2 -PDA-PAPTCl) towards anionic organic dye Congo red (CR) was investigated to evaluate their potential environmental applications. We demonstrated that the surface of SiO 2 particles can be successfully functionalized with cationic PAPTCl. The adsorption capability of as-prepared SiO 2 was found to increases from 28.70 and 106.65 mg/g after surface grafted with cationic polymers. The significant enhancement in the adsorption capability of SiO 2 -PDA-PAPTCl is mainly attributed to the introduction of cationic polymers. More importantly, this strategy is expected to be promising for fabrication of many other functional polymer nanocomposites for environmental applications due to the universality of mussel inspired chemistry and well designability and good monomer adaptability of SI-ATRP.
研究领域:
材料科学
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环境工程
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聚合物化学
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DOI
PubMed
高影响因子
ACS Applied Polymer Materials
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2024
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IF 4.4
Xuhui Liang,Yuping Liu,Zhen Dong,Nanting Qiu,Fuwei Kong,Kun Cao,Zhong-Ren Chen
Mild reaction conditions and excellent functional group tolerance make ring-opening metathesis polymerization (ROMP) a widely used technique to synthesize functional materials. In this work, we used ROMP and atom transfer radical polymerization (ATRP) to prepare a reduction-sensitive brush-arm star polymer (BASP) drug carrier by a one-pot method and further conducted in vitro studies. First, a bifunctional norbornene-based ATRP initiator NB-Br and a reduction-sensitive dinorbornene cross-linker (DNC) were synthesized. Subsequently, NB-Br was subjected to ATRP using the hydrophilic monomer oligoethylene glycol monomethyl ether methacrylate (OEGMA) at different polymerization times to obtain the norbornenyl macromonomer NB-P(OEGMA)n with different degrees of polymerization. In the same reaction flask, NB-P(OEGMA)n underwent an ROMP reaction to generate a brush-shaped polymer. Next, DNC was added to the reaction flask, and the reaction was continued to obtain BASP. This one-pot method could successfully be used to achieve the transformation of the macromonomer to the brush-shaped polymer and subsequently to the star polymer. In vitro biological experiments demonstrated that BASP micelles exhibited reduction-triggered cleavage of disulfide bonds and degradation of polymers after coculture with 10 mM glutathione, promoting the release of intracellular doxorubicin and achieving the controlled release of drugs. We expect the findings of our study to serve as an efficient synthetic strategy to prepare carriers for biomedical applications.
研究领域:
材料科学
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高分子化学
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药学
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生物医学工程
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DOI
高影响因子
ADVANCES IN POLYMER TECHNOLOGY
·
2021
·
IF 2.389
Shuangshuang Wang,Houfang Chi,Lin Chen,Wei Li,Yuchao Li,Guang Li,Xiangcai Ge
In this work, polymethyl methacrylate (PMMA) and polystyrene (PS) with controlled structures would be grafted on graphene material. The hybrid materials were prepared by coating graphene oxide (GO) with polydopamine (PDA) as a reactive underlayer and reducing agent, subsequently, surface-initiated polymerization of monomers (methyl methacrylate, styrene) based on the activators regenerated electron transfer atom transfer radical polymerization (ARGET-ATRP) technique. The polymer brush-modified graphene materials were then incorporated into the PMMA or PS matrix to get polymer nanocomposites with better thermal properties. The results of Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA) demonstrated that PMMA and PS chains were successfully anchored on the surfaces of functionalized GO sheets. The influence of the grafted polymer brush-modified GO on thermal stability of PMMA and PS was investigated by a simultaneous thermal analyzer. Thermal conductivity of the polymer nanocomposite was determined by a conductive calorimeter. The results showed that thermal stability, glass transition temperature (), and thermal conductivity of the polymer nanocomposites were obviously improved compared with pure PMMA or PS.
研究领域:
材料科学
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高分子化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Science of Advanced Materials
·
2018
·Vol. 10
·期 2
·165-171
·
IF 1.318
Lan Daosong,Xiong Lei,Liang Hongbo,Zhou Jianping,Chen Liang,Wang Qiuping
A novel strategy based on grafting the comb-like copolymer brushes onto the carbon fiber (CF) surface was presented in this paper to improve the interfacial properties between the CF and epoxy matrix. The comb-like copolymer poly(4-vinylbenzyl chloride)-g-poly(glycidyl methacrylate)
(PVBC-g-PGMA) was chemically grafted onto the CF surface by combination of reversible addition-fragmentation chain transfer polymerization (RAFT) and atom transfer radical polymerization (ATRP). FT-IR, TGA, XPS and dynamic contact angles analysis demonstrate that the comb-like copolymer
brushes have been successfully grafted onto the CF surface, which can increase the surface energy and wettability of the CF with the matrix. Compressive tests show that the tensile strength, flexural strength and interfacial shear strength (IFSS) of epoxy composites reinforced by CF grafted
with PVBC-g-PGMA (CF-PVBC-g-PGMA) have been greatly improved by 39.3%, 51.9% and 143.6%, indicating that the grafting of PVBC-g-PGMA onto the CF surface can effectively enhance the mechanical and interfacial properties of epoxy composites.
研究领域:
材料科学
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高分子化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2014
·
IF 2.538
Yuhao Ma,Xinxiu Bian,Liu He,Mengtan Cai,Xiaoxiong Xie,Xianglin Luo
Developments of poly(caprolactone) in blood-contacting applications are often restricted due to its intrinsic hydrophobicity. One common way to improve its hemocompatibility is to attach hydrophilic polymers. Here we developed a non-destructive method to graft hydrophilic poly(acrylamide) (PAAm) onto poly(caprolactone) (PCL) surface. In this strategy, azido-ended PCL with low molecular weights was synthesized and blended with PCL to create a surface with “clickable” property. Alkyne-ended poly(acrylamide)s with controlled chain lengths were then synthesized by atom transfer radical polymerization (ATRP), and finally were immobilized onto PCL surface by “click” reaction. The occurrence of immobilization was verified qualitatively by water contact angle measurement and quantitatively by X-ray photoelectron spectroscopy (XPS). The PAAm grafted surface exhibited fouling resistant properties, as demonstrated by reduced bovine serum albumin (BSA) and fibrinogen (Fg) adhesion.
研究领域:
材料科学
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生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Jicui Dai,Yichao Dong,Cong Yu,Yaxin Liu,Xiangguo Teng
A novel N115-g-PSBMA membrane containing zwitterionic groups was successfully prepared by grafting the zwitterionic SBMA (sulfobetaine methacrylate) onto Nafion 115 (N115) via SI-ATRP (surface-initiated atom transfer radical polymerization) technique. The N115-g-PSBMA membrane has shown higher hydrophilicity , lower vanadium permeability, higher coulombic efficiency and energy efficiency than that of commercial N115 membrane for VRB (vanadium redox flow battery) application. At the current density of 40–80 mA cm −2 , the average energy efficiency of the VRB with N115-g-PSBMA membrane has reached up to 87.3%, which is 2.6% higher than that of the VRB with N115 membrane at the same current densities. The method is expected to present a new direction to prepare novel separators with both excellent performances and low cost for VRB application.
研究领域:
能源材料
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高分子科学
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电化学储能
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DOI
高影响因子
危险品化学品经营许可证（带存储）