JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 23
·e55478
·
IF 2.7
Wei Zhao,Wenxia Zhao,Xinwei Li,Xin Liu,Kaihong Hui,Yifan Song,Huaijun Chen,Yubo Cui,Qian Zhu,Jing Liu,Liang Qiao,Yani Yan
In the present study, the low pollution acidic potassium permanganate system has been used in the study of its micro-etching effect on polycarbonate-acrylonitrile butadiene styrene (PC-ABS). Prior to micro-etching using a N methyl pyrrolidone (NMP)-glycol butyl ether solution was used as the swelling system of PC-ABS. Reasonable swelling conditions were determined, a 2-min expansion period at a temperature of 35°C with an NMP concentration of 80%. After the swelling processes, the effects of the volume ratio of V H 2 O : V H 2 S O 4 , micro-etching temperature, and micro-etching duration on the PC-ABS surface morphology, surface roughness, surface hydrophilicity, and peel strength, have been investigated. It was finally determined that the best micro-etching effect could be obtained by reacting at V H 2 O : V H 2 S O 4 = 1:2 and a temperature of 60°C for 25 min. The surface of the PC-ABS copolymers was characterized by x-ray photoelectron spectroscopy, atomic force microscopy, and Fourier-transform infrared spectroscopy. The results showed that the micro-etching process changed the morphology of the PC-ABS surface and generated cavities. In addition, the surface roughness increased from the initial R a = 9.69 to R a = 197 nm. Also, the water contact angle on the PC-ABS surface decreased from 92.2° to 28.6°, and the peel strength increased to 0.98 kN/m.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yongning Ma,Panpan Li,Peihan Wu,Mingyuan Guo,Yuhao Yang,Xiaolong Li
In photocatalytic anticorrosion perspective, the migration rate of excited electrons from surface layers to substrate steels restricted the performance of g-C 3 N 4 due to the high resistance between interface of g-C 3 N 4 layers and adhesive layers. Herein, an S-scheme g-C 3 N 4 /polyaniline (PANI) heterojunction with face-to-face structure was established by a secondary calcining method. The as-prepared heterojunctions were applied to protect Q235 carbon steel, and the results showed that the anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction is much higher than that of g-C 3 N 4 and PANI coating layers according to salt spray test. Photocurrent intensity indicated that the optimum amounts of g-C 3 N 4 and PANI were 0.06 and 0.09 mL/cm 2 , which are benefit for the transport of excited electrons due to the optimum thickness of coating layers. Furthermore, the S-scheme g-C 3 N 4 /PANI heterojunction can promote the separation rate of charge carriers and suppress the recombination rate at the same time, which are inferred from photocurrent intensity, electrochemical impedance spectra, super-depth-of-field microscope, and photoluminescence investigation. In the last, the enhanced anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction with face-to-face structure was deduced according to mentioned characterization.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Chunyan Yang,Shijie Mo,Xirui Chen,Qianqian Yuan,Jiali Zhu,Ting Wang,Min Zheng,Mingru Zhou,Guanjun Chang,Yewei Xu
A novel benzimidazole-based porous polymer, denoted as PTBI, was synthesized utilizing self-synthesized 1,3,5-tris(1H-benzo[d]imidazol-2-yl)benzene (TBI) and 4,4′-difluorobenzophenone as primary materials via a C N coupling reaction, followed by a freeze-drying process. PTBI displayed commendable thermal stability, as evidenced by a temperature of 475°C at which a 5% weight loss occurred and a char yield of up to 65% at 800°C. Trinitrotoluene (TNT) was effectively adsorbed by PTBI in aqueous solutions, thanks to the combined effects of three π–π interactions and one dipole–π interaction. At 25°C, PTBI achieved a maximum adsorption capacity as high as 280.8 mg/g, with approximately 60% of this capacity attained within just 1 h. Furthermore, a thermodynamic analysis showed that the adsorption of TNT by PTBI was a spontaneous, exothermic process that was followed by a decrease in entropy. It is noteworthy that following five adsorption and desorption cycles, the adsorption efficiency held steady at a relatively high level using acetone as the eluent. These promising results underscore PTBI's significant potential in the realm of TNT wastewater treatment, positioning it as a compelling candidate for further research and application under extreme condition in this field.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 42
·e56095
·
IF 2.7
Xianhang Bu,Zhengcan Chen,Xiaoyu Lin,Wan Xu,Yuanjun Sun,Xiaojian Ou,Yuan Sun,Zhenbin Chen
In this study, we combined the imprinting technique, temperature-sensitive polymer, and Pickering emulsion polymerization to prepare a temperature-sensitive porous imprinted polymer. First, the temperature-sensitive block polymer PDEA-b-P (DEA-co-AM) was prepared by reversible-addition fragmentation chain transfer polymerization, and then a temperature-sensitive porous ReO 4 − imprinted polymer (ReO 4 − -TPIP) was prepared using the Pickering-like polymerization technique, which was introduced to the preparation of the imprinted polymer. The structure and morphology of the polymer were characterized by FTIR, SEM-EDS, and BET. The adsorption experiments showed that the maximum adsorption (Q), separation (R), and desorption (D) of ReO 4 − -TPIP were 0.1568 mmol/g, 3.41, and 85.22%, respectively, and the adsorption equilibrium could be reached after 120 min, which decreased to 0.1212 mmol/g, 1.23, and 70.01% after repeated use for 11 times. These results indicate that ReO 4 − -TPIP has good adsorption and reusability properties. The adsorption studies showed that ReO 4 − -TPIP conformed to the zero-level kinetic model in the pre-adsorption stage, the quasi-one-level kinetic model in the late stage, and the isothermal adsorption process conformed more to the Langmuir model. In addition, in the secondary leach solution of high-temperature alloys, the purity of rhenium in the solution increased from 35.4119% to 53.4812% after one adsorption/desorption cycle. The prepared ReO 4 − -TPIP provides a new material and strategy for the selective separation and purification of rhenium in complex rhenium-containing solutions for the industry.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55616
·
IF 2.7
Jiangtao Liu,Ke Yang,Yaru Yang,Mingshuo Zhang,Yiran Shi,Baoxia Xue,Mei Niu,Li Zhang
To enhance the efficient utilization of waste hemp rods, a kind of three-dimensional (3D), mesh-like lamellar structured hemp-based biomass carbon aerogel (CA) was developed by freeze-drying and subsequent high-temperature carbonization method. The microstructure, flame resistance, thermal stability, and thermal conductivity of CA were investigated using several analytical techniques, including scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), simulated combustion tests, and thermogravimetric analysis (TG). Optimum formulation yielded at an alkali treatment concentration of 20% and a carbonization temperature of 700°C, CA with a 3D network of reticulated lamellae was obtained. CA exhibited minimal values for thermal conductivity (0.06 W/m K) and thermal diffusion coefficient (0.41 mm 2 /s), which are indicative of superior insulative properties. Moreover, the material demonstrated remarkable thermal endurance and flame resistance, achieving a char yield of 70.03% when subjected to a temperature of 700°C in an oxidative environment.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 45
·e56215
·
IF 2.7
Xinxin Xu,Shangchao Ji,Lei Shi,Hailong Chen,Dong Liu,Jiawen Dai,Xianze Yin,Baoqing Shentu,Long Zheng
Developing nonchemical cross-linked natural rubber (NR) latex gloves with antibacterial properties and simultaneously enhanced mechanical strength and elongation at break is challenging. In this study, liquid-like silica (SiO 2 ) nanofluids (SiO 2 nfs) with hard SiO 2 cores and soft organic molecule shells are synthesized and then self-assembled with graphene oxide (GO) via electrostatic interactions to create GO@SiO 2 nfs hybrids, which are blended with NR latex. Strong hydrogen bonding and electrostatic interactions between NR latex particles and GO@SiO 2 nfs hybrids form physically cross-linked GO@SiO 2 nfs/NR composite films. The rigid GO in the hybrids provided reinforcement, while the vicious SiO 2 nfs facilitated the energy dissipation during stretching. This synergy results in simultaneous improvements in the mechanical strength and elongation at break of the GO@SiO 2 nfs/NR composite films. Their tensile strength increased by 95.2% compared with pure NR films and by 20.6% compared with GO/NR composite films, and the elongation at break improved by 27.8% and 19.4%, respectively. Furthermore, the presence of quaternary ammonium cation in SiO 2 nfs conferred excellent antibacterial efficacy against Escherichia coli and Staphylococcus aureus to the GO@SiO 2 nfs/NR composite films. These results offer valuable insights for the development of high-performance, nonchemical cross-linked NR latex products.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Hongyu Xu,Jingjing Zhang,Xue Lv
Due to their biocompatibility and tissue-like properties, hydrogels have garnered considerable interest in bioelectronics field. Nevertheless, their practical implementation is limited by factors such as inadequate mechanical strength, weak interface adhesion, and the lack of antimicrobial properties. To address these challenges, a novel conductive hydrogel was synthesized through free radical polymerization, incorporating laponite (LA), tannic acid (TA), polyacrylic acid (PAA), and polyacrylamide (pAAm). An innovative approach was employed to enhance LA's dispersion through ionic liquid (IL) in water through electrostatic interactions. The integration of TA, PAA, and PAAm with LA sheets via multiple hydrogen bonds resulted in excellent mechanical properties. The resulting P(AAm-AA)/IL-LA/TA hydrogel exhibits impressive characteristics, including a fracture stress of 0.44 MPa, a strain of 1800%. Notably, the hydrogel's TA component exhibits strong antibacterial activity against Staphylococcus aureus and Escherichia coli . This advanced hydrogel sensor effectively monitors human movements, displaying a gauge factor of 12.7. Furthermore, its versatile and conductive nature facilitates adhesion to a wide range of substrates, making it a promising candidate for applications in human activity monitoring, electronic devices, and medical health surveillance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yumeng Zhang,Na Li,Yulong Xiao,Qiwen Yong,Yuechuan Wang,Yao Xiao,Jingxin Lei
The balance of chain flexibility and rigidity may improve the fluorescence quantum yields (QYs) of unconventional aggregation-induced emission (AIE) polymers. Herein, we prepared four crosslinked polyacrylic acids (CPAAs) with AIE effect using N,N′ -methylene bisacrylamide (MBA) as the crosslinker. The chain flexibility of the CPAAs decreases with the increase of MBA contents. These CPAAs show bright blue fluorescence under the irradiation of UV light. The maximum excitation wavelengths of the CPAAs are not near their UV absorption peaks because their emission is originated from the clustering of the oxygen atoms of the carbonyl groups, but not the ( n , π *) transition of the oxygen atoms. The emission spectra and fluorescent lifetime data both validate that all the CPAAs have similar emission species. Density functional theory calculations suggest the emission of the CPAAs comes from the carboxyl groups. One of the CPAAs with balanced chain flexibility and rigidity has an optimized fluorescence QY of 17.7%, which is much higher than that of the reported linear PAA of 4.5%.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xinrong Li,Yang Bai,Deng Gu,Jianing He,Qiang Hu,Zhongxiang Chen,Haibo Wang,Shahad Ali Badr,Lu Liu
In deep and ultra-deep wells, drilling fluids often experience increased filtration loss due to elevated temperatures and high salinity. To solve this problem, 5 g of N, N-dimethylacrylamide (DMAA), 13 g of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS), 2 g of 4-acryloylmethiolane (ACMO), and 0.2 g of graphene oxide (GO) were polymerized through aqueous phase polymerization at 50°C for 2 h to form the Graphene oxide and DMAA, AMPS, ACMO Composites (GO-NAA). The synthesized nanocomposite, GO-NAA, was characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance, and thermogravimetric analysis to confirm its structure. The experimental results showed that under the conditions of 220°C and 15% NaCl, water-based drilling fluid (WBDF) containing 3% GO-NAA reduced the filtration value of the American Petroleum Institute(FLAPI) by 82.15% (from 76.2 to 13.6 ml) and the high-temperature and high-pressure filtration value (FLHTHP) by 88.50% (from 238.2 to 27.4 ml) compared to water-based drilling fluid without GO-NAA. Morphological analysis revealed that GO-NAA adhered to bentonite particles through hydrogen bonding and electrostatic interactions, promoting uniform dispersion of particles in the aqueous drilling fluid. This mechanism facilitated the formation of a thin and dense mud cake, which effectively minimized filtration loss. These findings quantitatively demonstrate the potential of GO-NAA as a temperature- and salt-resistant filtration loss reduction agent, offering significant performance improvements under extreme drilling conditions.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 3
·e56377
·
IF 2.7
Yaqi Ge,Pengfei Diao,Xiangxu Li,Yukun Zhou,Zhenchun Xu,Huiguang Bian,Yao Xiao,Chuansheng Wang
In this paper, pyrolysis carbon black (CBp) was introduced into nitrile butadiene rubber (NBR), the effects of the ratio of CBp and carbon black (N326) on the properties of NBR composites were investigated, and the optimal ratio was determined. On this basis, the accelerator DPG, coupling agent KH550 and CBp were modified by ball milling and plasma. The results showed that when the ratio of CBp to N326 was 40:15, the overall properties of NBR composites was better. Compared with the unmodified CBp/NBR composites, the change rate of tensile product, resilience and DIN abrasion of ball milling-plasma modified CBp/NBR composites in oil environment were reduced by 52.96%, 12.81%, and 27.19%, respectively, and the tear strength after double damage by high temperature and oil bath was increased by 15.63%, which resulted in better oil and high temperature-resistance. In summary, the ball milling-plasma combined with DPG/KH550 modified CBp can not only replace N326 carbon black, but also realize the preparation of NBR composites with better oil and high temperature-resistance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Haoping Peng,Dingding Li,Shouwu Xu,Yonggang Zhao,Yun Lei,Haoran Zhu,Qigui Tan,Zhiwei Li
In this study, sodium tripolyphosphate was used to modify starch, resulting in a novel starch-based flame retardant. The phenolic resin was employed as the matrix, with the starch-based flame retardant incorporated as a filler and applied to the surface of rigid polyurethane foam (RPUF) to prepare the composite material. Scanning electron microscopy revealed that the coating effectively penetrated the RPUF framework, forming a strong and tightly bonded layer with excellent coverage. The combustion and mechanical properties of the composite material were investigated. The results showed that, in vertical combustion tests, the composite material met the UL940-5VA standard. In thermogravimetric analysis, the composite exhibited a 42.71% increase in char residue compared with the RPUF. In three-point bending pulverization resistance tests, the composite demonstrated a 28.42% reduction in chalking compared with the RPUF coated solely with phenolic resin. This study paves a new path for the practical application of bio-based flame retardants.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wei Peng,Liting Wang,Mingyu Zhang,Deng-Guang Yu,Xiaoyan Li
Biodegradable conductive films are crucial for the sustainable development of wearable electronics. In this work, a flexible and degradable conductive film was prepared based on a carefully designed interface of polylactic acid (PLA) electrospun fibers and silver nanowires (AgNWs). The amphiphilic triblock copolymer was added to PLA solution for electrospinning, followed by solvent posttreatment to induce the hydrophilic block of the amphiphilic triblock copolymer to migrate to the fiber surface. Dopamine can be uniformly polymerized on the surface of hydrophilic PLA fibers, and the prepared PLA@PDA fiber film can form a good interface combination with AgNWs. The electrical conductivity of AgNWs/PLA@PDA flexible film can reach 258.5 S cm −1 , showing obvious Joule heating effect and good mechanical properties. Degradation experiments showed that in phosphate buffered saline , the PLA molecular chain showed a dynamic equilibrium due to the scission and rearrangement of the ester groups and degraded slowly, while AgNWs/PLA@PDA degraded rapidly under alkaline conditions. Our study provides a simple and controllable method to prepare flexible degradable electronic films, which is expected to be applied to flexible wearable bioelectrodes.
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高影响因子
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