JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 29
·e52647
·
IF 3.057
Jinrong Yin,Yunlei Gong,Huaan Zheng,Hui Yuan,Zhen Zeng,Wei Qin,Chenghao Li,Yang Zhou,Xianyan Ren
Ultra-low-density proppants are of great significant in slick water fracturing system, but the polymer composite microspheres can hardly promise the quality of oil and gas due to their poor hydrophobicity. To address the issue, we prepared several types of modified styrene-divinyl benzene copolymer microspheres (MSDBs) with long-term durable hydrophobicity and high strength, including O-MSDBs (hydrophobic MSDBs), LO-MSDBs (long-time hydrophobic MSDBs), and CO-MSDBs (coated O-MSDBs) on the basis of a molecular structure of “KH570-styrene (St)-divinyl benzene (DVB)” copolymer. In this article, the design concept and the structure of MSDBs was clarified, and performances of MSDBs are systematically discussed and compared with commercially available hydrophobic microspheres. The O-MSDBs, a kind of nanoparticle patterned St-DVB copolymer microspheres, were prepared by a one-step suspension polymerization undergoing a sol–gel process, showing strong hydrophobicity with a water contact angle up to 140.7°, but short durability in strong hydrochloric acid or hydrofluoric acid; On the contrary, LO-MSDBs perform better in the stability and durability of hydrophobicity with a slightly lower water contact angle about 135.9°. The LO-MSDBs were designed by coating functionalized St-DVB copolymer microspheres with fluororesin. Similarly, CO-MSDBs from fluororesin-coated O-MSDBs were designed. As expected, CO-MSDBs have a stronger hydrophobicity (139.0°) than LO-MSDBs and longer durability than O-MSDBs. Moreover, the MSDBs exhibit better properties than the commercially available hydrophobic polymer and ceramic microspheres.
研究领域:
材料科学
·
石油工程
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55602
·
IF 2.7
Zhenjie Gan,Shuxiu Ma,Yinlong Zhang,Yuzhou Wang,Wenbo Liu,Jiliang Cao,Na Li
Both hydrophobic and hydrophilic pollutions have damage on our environment, and it is necessary to remove them. However, the treatments for different water pollutions can be specific due to the hydrophobicity of various molecules. Therefore, it is important to separate pollutants with different hydrophobicity. In this work, we developed a diffusion separation method based on hydrophobicity selectivity polymer membranes, whose selectivity between hydrophilic and hydrophobic pollutants can be up to more than 100. By doping pH-responsive monomer into hydrophobic polymer membrane, the permeability of membrane can be tuned by surrounding pH, and the selectivity is not decreasing. With the results of characteristics on contact angle, scanning electron microscope, and mechanical properties, we prove the stimuli-responsive polymer membrane at different states have similar properties with the nonresponsive amorphous polymer membranes with high separation selectivity.
研究领域:
环境科学
·
材料科学
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 2.8
Gan Peng,Yizhong Yuan,Xiaohui Tian,Jinyu Sun,Huimei Yu,Chunhua Cai
Flexible strain sensors, as crucial components of smart wearable devices, have garnered significant attention in fields such as human health monitoring. However, developing flexible strain sensors with high strength, sensitivity, extensibility, and long-term stability remains a challenge. In this study, a straightforward method was successfully developed for fabricating a cross-linked, conductive flexible strain sensor based on polyaniline/3-aminobenzenesulfonic acid-epoxidized natural rubber (PANI/3-ABSA-ENR) with a cross-linked structure. This was achieved by grafting 3-aminobenzenesulfonic acid (3-ABSA) onto epoxidized natural rubber (ENR) nanospheres, followed by in situ polymerization of aniline (ANI) onto the rubber nanospheres to form an effective cross-linked structure. At a PANI content of 13 wt% (PANI/ENR), the conductive flexible strain sensor exhibits outstanding comprehensive performance. Consequently, this strain sensor demonstrates ultra-high tensile strength (approximately 10 MPa), a wide strain range (approximately 1200%), and long-term reliability (2500 cycles at 50% strain). Simultaneously, the PANI/3-ABSA-ENR strain sensor exhibits a high gauge factor (GF = 21.6) and short response time (230 ms). Furthermore, this strain sensor can detect and capture both subtle and large-amplitude human motion signals, such as those from limb joints, cheeks, and mouth. This demonstrates the PANI/3-ABSA-ENR strain sensor's broad application potential in smart wearable devices.
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 5
·51566
·
IF 3.125
Yunqi Gao,Changhao Feng,Hairui Wang,Minghan Xu,Chengzhong Zong,Qingfu Wang
The development of new polymer electrolytes is greatly significant due to the improvement of the energy density and safety of lithium batteries. Comparing with a single polymer electrolyte, the composite polymer electrolyte has better performance, especially some based on the concept of rigid–flexible coupling polymer electrolytes. In this study, a series of polyurethane with various proportion of soft and rigid segments are synthesized and used as a composite polymer electrolyte (C-PU) together with cellulose membrane. The optimized polymer electrolyte C-PU20 (with 20 wt% of the hard segment) exhibits high ionic conductivity of 2.4 mS/cm at 25°C and wide electrochemical stability window up to 4.8 V. Moreover, the C-PU20 electrolyte for LiFePO 4 /Li cell shows more fantastic cycling performance with capacity retention of 96% after 300 cycles at 0.5 C and better C-rate capability compared with the pristine cellulose membrane. All the findings indicate that the C-PU20 electrolyte is a very prospective polymer electrolyte for high-performance lithium batteries.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 17
·
IF 1.86
Zhigao Zhu,Deng Hu,Yuanren Liu,Ying Xu,Gaofeng Zeng,Wei Wang,Yanfeng Zhang,Fuyi Cui
Mixed matrix membranes (MMMs) were made by incorporating vinyltrimethoxysilane (VTMS)-modified Silicalite-1 zeolite nanoparticles (V-Silicalite-1 NPs) into fluorinated polybenzoxazine (F-PBZ) modified polydimethylsiloxane (PDMS) polymer through in situ polymerization method. The membrane morphology, surface wettability, and pervaporation performance were systematically investigated. The addition of F-PBZ into PDMS membranes resulted in substantially improved flux and marginal increase of separation factor, which is the result of higher free volume and higher hydrophobicity caused by the addition of F-PBZ. The modification of Silicalite-1 NPs improved the interfacial contact between zeolite crystals and polymer phase. The incorporation of hydrophobic V-Silicalite-1 zeolite NPs into the PDMS membranes led to much higher separation factor but reduced flux, which is the result of increased hydrophobicity and reduced free volume. The three-component MMMs with V-Silicalite-1 zeolite NPs in the F-PBZ fluorinated PDMS exhibited separation factor of 28.7 and flux of 0.207 kg m −2 h −1 for 5 wt % ethanol aqueous solution at 50 °C, while the pure PDMS membranes only had separation factor of 4.8 and flux of 0.088 kg m −2 h −1 . The substantial increase of both flux and separation factor were attributed to the higher hydrophobicity and free volume caused by the incorporation of both hydrophobic zeolite crystals and F-PBZ polymer into the PDMS membranes. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44753.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 34
·48988
·
IF 2.52
Shichang Chen,Song Chen,Shanshan Guang,Xianming Zhang,Wenxing Chen
Melt polycondensation has recently been reported to prepare high-viscosity poly(ethylene terephthalate) (PET), the reaction efficiency is greatly improved in over 10-folds compared with conventional solid state polycondensation (SSP). Melt postpolycondensation of common PET chips was conducted in specified film thickness to obtain industrial PET. Based on the investigation of reaction conditions, film reaction kinetics were determined in the principle of end groups analysis. It was positively regulated that the intrinsic viscosity of PET could be achieved in condition of high vacuum, thin melt film and proper temperature, degradation reaction would be increased at exorbitant temperature. An apparent reaction kinetic model was proposed and was verified by experiments. Results indicated the activation energy of melt postpolycondensation of PET was 88.22 kJ/mol and the reaction rate constant was significant higher than that of solid state polycondensation.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 34
·48989
·
IF 2.52
Peitao Yu,Hao Pang,Jianheng Huang,Yeyun Meng,Hao Huang,Simin Li,Bing Liao,liyan Liang
A new water-soluble, hydrolyzable polyethylene glycol di-mercaptoacetate (PGM) was synthesized as a chain transfer agent. Subsequently, an early-strength polycarboxylate superplasticizer (ESPC) was successfully prepared by using PGM as a chain transfer agent, along with acrylic acid, sodium methylallyl sulfonate (SMAS), and isoprene oxy poly(ethylene glycol) as comonomers. The effect of the ESPC on cement particles was systematically investigated. The fluidity, setting time, and compressive strength were measured to evaluate the performance of the ESPC and compared with those of a conventional polycarboxylate superplasticizer (PCE). The setting time of the ESPC can be shortened by 40 min in comparison with the PCE, and the compressive strength at 24 hr of setting time is increased by 5 MPa. In addition, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy characterization were performed to investigate the effect of the ESPC on cement hydration from a microscopic level. Furthermore, the hydration heat was determined to investigate the interactions between the ESPC with the cement particles. It was found that if ester groups were introduced into the backbone chain of the ESPC and subsequently hydrolyzed, the ESPC was readily adsorbed onto cement particles. This enhanced adsorption improved the microstructure of the cement hydrate and accelerated the cement hydration process.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 42
·
IF 1.768
Rongyan Zhao,Jun Zhao,Lina Wang,Zhi-Min Dang
Reduced sedimentation of barium titanate (BaTiO 3 , BT) nanoparticles during solution casting to prepare the BT/poly(vinylidene fluoride) (PVDF) films is systematically investigated by surface modification of the BT nanoparticles. The surface of BT nanoparticles is hydroxylated by hydrogen peroxide (H 2 O 2 ) or aminated by γ-aminopropyl triethoxysilane (γ-APS). It is found that the compatibility between the fillers and polymer matrix is remarkably improved by such surface treatments. As a result, the agglomeration and sedimentation of BT nanoparticles in the BT/PVDF composite films are significantly reduced, which is supported by morphology observation. Better dielectric properties such as higher dielectric constant, higher breakdown strength, and lower dielectric loss are also obtained for the composite films with surface-modified fillers than those with raw fillers. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42662.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2014
·Vol. 131
·期 22
·
IF 1.64
Bing Qu,Jun-rong Li,Hui-ning Xiao,Bei-hai He,Li-ying Qian
Sodium carboxymethylcellulose/poly(methyl acrylate) (NaCMC/PMA) interpenetrating polymer networks (IPNs) were prepared by fractional step in 40 wt % ethanol solution with N,N′-methylenebisacrylamide as a crosslinker. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and differential scanning calorimeter were used to characterize the NaCMC/PMA IPN hydrogels and confirm the IPN structure as well. Simultaneously, adsorption of the obtained IPN hydrogels to methylene blue (MB) was also investigated. It was observed that the adsorption of MB onto the hydrogels was mainly dependent on the initial concentration of MB and the pH of the solution. Adsorption rate of MB was much higher in the first 9 h than that in the following period and saturated adsorption amount of MB was 2370 mg/g at the initial MB concentration of 100 mg/L. Moreover, the adsorption capacity of the IPN hydrogels at the neutral pH condition is much higher than those at acid or alkaline pH conditions. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 41101.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 23
·
IF 1.86
Fei Xie,Lixin Xing,Li Liu,Yuguang Liu,Zhengxiang Zhong,Chuyuan Jia,Wei Wang,Caifeng Wang,Min Zhao,Yudong Huang
The mutual irradiated aramid fibers in 1,4-dichlorobutane was ammoniated by ammonia/alcohol solution, in an attempt to improve the interfacial properties between aramid fibers and epoxy matrix. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), dynamic contact angle analysis (DCA), interfacial shear strength (IFSS), and single fiber tensile testing were carried out to investigate the functionalization process of aramid fibers and the interfacial properties of the composites. Experimental results showed that the fiber surface elements content changed obviously as well as the roughness through the radiation and chemical reaction. The surface energy and IFSS of aramid fibers increased distinctly after the ammonification, respectively. The amino groups generated by ammonification enhanced the interfacial adhesion of composites effectively by participating in the epoxy resin curing. Moreover, benefited by the appropriate radiation, the tensile strength of aramid fibers was not affected at all. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44924.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 37
·45303
·
IF 1.86
Quan Wang,Qingguo Meng,Tinglan Wang,Weihong Guo
Graphene nanoplatelets coated by polyaniline (GNP@PANI) and ethylene–vinyl acetate (EVA) copolymer–high-density polyethylene (HDPE) were used for the first time to prepare high-performance antistatic composites through an effective method that combined solution mixing and melt blending. GNP@PANI nanocomposites were fabricated by in situ polymerization to improve the dispersion of graphene nanoplatelets (GNPs) in the EVA–HDPE matrix and the compatibility between the GNPs and the EVA–HDPE matrix. The GNP@PANI nanocomposites and EVA were first prepared as a premix through solution mixing, and then, the premix and HDPE were prepared as highly antistatic composites through melt blending. The dispersion of the GNPs in the EVA–HDPE matrix and the compatibility between the GNPs and the EVA–HDPE matrix were confirmed by field emission scanning electron microscopy and transmission electron microscopy observations. The GNP@PANI–EVA–HDPE composites met the requirements for antistatic materials when the content of the GNP@PANI nanocomposites was 5 wt % with only about 1 wt % GNPs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45303.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2012
·Vol. 127
·期 6
·4879-4888
·
IF 1.289
Jingzhao Mo,Lei Xia,Pengju Pan,Baoqing Shentu,Zhixue Weng
The epoxide-terminated low-molecular-weight poly(phenylene oxide) (PPO), EPPO, was synthesized by modifying the terminal hydroxyl group of PPO and it was reactively blended with epoxy-novolac resin (EPN). The curing kinetics, phase morphology, thermal stability, dielectric property, and water absorption behavior of the cured EPN/EPPO blends were investigated and compared with the unmodified EPN/PPO blends. As revealed by the FTIR and DSC analysis, EPPO takes part in the curing reaction and forms a reactive blend with EPN. The curing rate of both EPN/PPO and EPN/EPPO blends first increases and then decreases with increasing the PPO or EPPO fraction. The blends have lower degree of curing than neat EPN, due to the steric hindrance effects of PPO or EPPO. Because of the reaction between blend components, EPN/EPPO blends show faster curing rate and higher degree of curing than the corresponding EPN/PPO blends. The reactive blending improves the dispersion of EPPO in EPN matrix and the EPN/EPPO blend forms a co-continuous morphology even at a low EPPO content, compared to the typical sea-island morphology of the EPN/PPO blend. The EPN/EPPO blend has remarkable smaller dielectric constant, dissipation factor, and water absorption than neat EPN. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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高影响因子
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