JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yongqian Shi,Junqiang Han,Ansheng Yao,Miao Liu,Bibo Wang,Cancan Zhang,Hongfei Zou
Designing multifunctional composites with high flame retardancy and excellent electromagnetic shielding performance is of significant importance. In order to address the poor flame retardant and electromagnetic shielding performances of thermoplastic polyurethane (TPU) composites, in this work, the γ-propyl-trimethoxysilane (KH550) functionalized silicon microencapsulated ammonium polyphosphate (SiAPP-NH 2 ) was synthesized using interface modulation technology. Then, SiAPP-NH 2 was combined with a copper metal–organic framework (MOF-Cu) through microencapsulation and electrostatic self-assembly techniques to prepare microencapsulated flame retardants (SiAPP-NH 2 @MOF-Cu). Subsequently, TPU composites were prepared through melt blending of SiAPP-NH 2 @MOF-Cu with TPU material. The results showed that the interface interaction between SiAPP-NH 2 @MOF-Cu and the TPU matrix was significantly enhanced. Compared to pure TPU, TPU/5SAN@1MC composite exhibited decreases of 78.7%, 51.3%, 59.3%, and 58.7% in peak heat release rate, total heat release, total smoke release, and total carbon dioxide release, respectively. In addition, TPU/1SAN@1MC/rGO composite achieved an average shielding effectiveness of 13.82 dB in the X-band, enabling its broad commercial application. This study offers a promising strategy for the fabrication of TPU composites with good flame retardant and electromagnetic shielding properties.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Kunyan Wang,Yibo Gao,Zuocheng Zhang,Zhou Fang,Yuhua Guo,Peisong Tang,Guoxiang Pan
In this work, a synergistic effect strategy was explored for fabricating hydrophobicity, phosphorus- and nitrogen-containing layered double hydroxides nanosheets (LDHs) based flame retardant (LDHs-K@DM). This fabricating process was achieved by amination of the surface of LDHs and, subsequently, interfacial self-assembly with high P content of diethylenetriaminpenta (methylene-phosphonic acid) (DTPMP) and high N content of melamine (MEL). The chemical construction and thermal stabilization properties of LDHs-K@DM were confirmed via different characterization approaches. The results revealed that LDHs-K@DM was successfully prepared and the surface of LDHs-K@DM was transformed into hydrophobicity with high water contact angle. Moreover, LDHs-K@DM had better thermal stability. After that, LDHs-K@DM was molten compounded with biobased polylactic acid (PLA). It was suggested that LDHs-K@DM were uniformly dispersed in the PLA matrix and could accelerate the decomposition of PLA to form char residues. Most importantly, the addition of 20 wt% LDHs-K@DM into PLA can endow the composite to achieve a desirable UL-94 V-0 rating and the limiting oxygen index value of 30.9%. Finally, the synergistic effect flame retardant mechanism of LDHs-K@DM was comprehensively analyzed. This synergistic decorating strategy for preparing LDHs-K@DM flame retardant is promising for industrial production.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yaling Deng,Lei Nie,Yu Xu,Chenhong Gao,Zhe Wu
The development of highly effective bio-lubricant coatings for arthritis treatment is extremely demanded. Herein, inspired by the efficient lubrication of articular cartilage, acrylic acid (AA) with (3-(methacryloylamino) propyl) dimethyl (3-sulfopropyl) ammonium hydroxide (MPDSAH) hydrogel coatings containing nanoparticles on Ti6Al4V substrate were designed and fabricated via UV grafting technology. SiO 2 and SiO 2 grafted with PAA polymer brushes (SiO 2 -g-PAA) were separately doped into the PAA-PMPDSAH hydrogel. The PAA-PMPDSAH/SiO 2 -g-PAA exhibits good tensile and compressive properties compared with PAA-PMPDSAH/SiO 2 hydrogel, with an enhancement of 183.4% in tensile modulus and 60.8% in compressive modulus. The PAA-PMPDSAH/SiO 2 -g-PAA hydrogel coatings exhibit a low wear volume, 2.9 ± 0.16 × 10 6 μm 3 , representing a decline of 32.1% and 61.3% compared with the PAA-PMPDSAH and PAA-PMPDSAH/SiO 2 hydrogel coatings, respectively. The antiwear performance has obviously improved. The hydrophilic PAA polymer brushes prevent the agglomeration of nanoparticles and promote homogeneously dispersion within the hydrogel. The three-dimensional crosslinked network structure of hydrogel effectively protects the structural integrity of the polymer brushes, thereby facilitating enduring lubrication properties. This work provides a strategy for promising artificial joint lubrication in biomedical fields.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 43
·e56154
·
IF 2.7
Weikai Han,Weibin Pan,Xianzhang Liu,Hongfeng Xie,Jie Jin,Jinling Liang,Yufeng Zhang,Guojia Huang,Jingshu Wu,Limiao Lin,Yonghang Xu,Yuezhong Meng
A CO 2 -based thermoplastic elastomer, poly(propylene carbonate)-multiblock-polyamide6 (PPC- mb -PA6) copolymer, was constructed through coupling amorphous/soft PPC blocks with crystalline/hard PA6 blocks. The PPC- mb -PA6 copolymers with different block length pairs were designed and synthesized, and then fully characterized by structural, thermal, and mechanical analysis. The proton nuclear magnetic resonance ( 1 H-NMR), diffusion ordered spectroscopy (DOSY), heteronuclear multiple-bond correlation (HMBC) and gel permeation chromatography (GPC) results confirm that the multiblock sequence structure of PPC- mb -PA6. The differential scanning calorimetry (DSC) tests show that all PPC-mb-PA6s possess melting points around 179–206°C. The thermal and mechanical analysis indicates improved service temperatures ( T 5% up to 270°C) and tensile strength ranging from 15.8 to 39.6 MPa with higher PA6 content. The dynamic mechanical analysis demonstrates excellent shape memory effect of PPC- mb -PA6 with thermal stimuli responsiveness derived from the micro phase separation between soft PPC and hard PA6 domains. And the characteristic strain fixity parameter ( R f ) and deformation recovery rate ( R r ) are 98% and 100%, respectively, which are comparable with other excellent shape memory polymers.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 48
·45566
·
IF 1.86
Yanhu Zhan,Yanyan Meng,Ning Yan,Yuchao Li,Denghu Wei,Xuquan Tao
Graphene hybrid aerogels have attracted attention as electrode materials because of their unique porous architectures. However, their electrochemical performance is limited by the intrinsic hydrophobicity and the ease of aggregation of graphene nanosheets. We demonstrate a unique methodology to produce graphene hybrid aerogels through assembly of graphene nanosheets, nanometer-scale ferroferric oxide (Fe 3 O 4 ), and hydrophilic poly(vinyl alcohol) (PVA) into three-dimensional hierarchical macrostructures. Electrochemical performance measurements exhibit a significant improvement in the specific capacitance of this ternary hybrid aerogel with remarkable cycling stability. Specifically, the specific capacitance is nearly 6.6 times higher than that of the neat graphene aerogel, and a cycling capacitance retention rate of 99% was achieved after 2000 cycles at a high current density of 0.5 A g −1 . Electrochemical impedance spectroscopy measurements demonstrate a lower resistance in the Fe 3 O 4 /graphene/PVA aerogel electrode compared with that of both neat graphene and Fe 3 O 4 /graphene aerogel electrodes. The obtained graphene hybrid aerogels with outstanding cycling performance and high energy density are very promising as electrode materials for supercapacitors. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45566.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 48
·45556
·
IF 1.86
Hongqiang Yan,Li Zhao,Zhengping Fang,Hao Wang
Complex multilayer coatings composed of α-zirconium phosphate (ZrP), polyethylenimine (PEI), and ammonium polyphosphate (APP) were constructed via layer-by-layer assembly method for flame retardant ramie fabric. Bicomponent PEI/ZrP layers served as insulating barrier coating, and bicomponent PEI/APP layers served as intumescent coating. The flame retardancy of the coated ramie fabric was strongly dependent on the nature of the coatings and the layer-by-layer assembly patterns. The coated ramie fabric with inside PEI/ZrP layers and outside PEI/APP layers possessed the most uniform and consistent coating surface morphology, as well as the highest content of N and P elements, resulting in an excellent improvement in flame retardancy of ramie fabrics. When this kind of coated ramie fabric was heated, the inner PEI/ZrP layer effectively prevent oxygen and heat from penetrating into the substrate, and the outer PEI/APP layer exposed to air with good expansion during combustion. The synergistic effect was formed during the combustion process and could impart ramie fabrics with high flame retardancy. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45556.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 46
·45431
·
IF 1.86
Ya Liu,Peng Qian,Yang Yu,Li Xiao,Yongliang Wang,Shufeng Ye,Yunfa Chen
Heavy metal ions such as Cu 2+ and Pb 2+ impose a significant risk to the environment and human health due to their high toxicity and non-degradable characteristics. Herein, Al(OH) 3 -polyacrylamide chemically modified with dithiocarbamates (Al-PAM-DTCs) was synthesized using formaldehyde, diethylenetriamine, carbon disulfide, and sodium hydroxide for rapid and efficient removal of Cu 2+ and Pb 2+ . The synthesized adsorbent was characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis, scanning electron microscopy–energy dispersive X-ray spectroscopy analysis, and transmission electron microscope measurements. Al-PAM-DTCs showed rapid removal of Cu 2+ (<30 min) and Pb 2+ (<15 min) with high adsorption capacities of 416.959 mg/g and 892.505 mg/g for Cu 2+ and Pb 2+ respectively. Al-PAM-DTCs also had high capacities in removing suspended solids and metal ions simultaneously in turbid bauxite suspensions. FTIR, thermodynamic study, and elemental mapping were used to determine the adsorption mechanism. The rapid, convenient, and effective adsorption of Cu 2+ and Pb 2+ indicated that Al-PAM-DTCs has great potential for practical applications in purification of other heavy metal ions from aquatic systems. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45431.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 43
·45446
·
IF 1.86
Haiquan Zhang,Qinrong Sun,Yanping Yuan,Xiaoling Cao
Poly(ethylene glycols) (PEGs) are phase change materials (PCMs) that exhibit undesirable heat transfer properties, which restrict their industrial utility. Apart from the intrinsic material properties, a large quantity of micropores in the crystalline PEG polymers cause poor heat transfer performance. In this work, the formation and growth of micropores are reported through in situ characterization. The addition of a nanoscale thermal-energy-conducting medium into PCMs has been proposed for reducing their porosity. The mechanism for reducing porosity is reported for prepared composite PCMs. The intrinsic causes are thought to be the following. Metal oxide nanoparticles can migrate with the liquid PEG flow, which can reduce the thermal stresses in the crystal growth process. In addition, the nanoscale medium promotes heterogeneous nucleation. The results of this study show that reducing the porosity of the polymer crystals is an important approach for improving the heat transfer properties of the PEG PCMs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45446.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 28
·45054
·
IF 1.86
Baichen Wang,Junjie Li,Yongna Liu,Yu Gao
Three-dimensional carbon nanohybrids constructed by reduced graphene oxide (rGO) and carbon nanotubes (CNTs) are prepared via simultaneous hydrothermal and chemical reduction reactions. The macroscopic rGO/CNTs monolith is used as the preformed reinforcement for polystyrene (PS) composites to function as the continuous conductive pathway. During hydrothermal reaction, interconnected network consisting of rGO and CNTs, driven by the hydrophobic and π-π interactions, is formed and then frozen by the following freeze-drying processing. Fourier transform infrared and X-ray diffraction results confirm that CNTs play an important role in tuning the amphiphilicity and pore structure of the as-prepared rGO/CNTs nanohybrids. rGO/CNTs/PS composites prepared via vacuum-assisted impregnation process exhibit the highest electrical conductivity of 1.21 × 10 −3 S m −1 , which is 11 orders of magnitude higher than that of neat PS. The functional synergies of rGO and CNTs are identified to establish an efficient route for improving the electrical property of polymer based composites. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45054.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 33
·
IF 1.866
Xin Tang,Bin Yuan,Yuanguang Yang,Yingquan Xie
A new water-soluble polymer was prepared and evaluated as a filtrate reducer for oil well cementing. The filtrate reducer (WSP) was synthesized from 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylic acid (AA), dimethyl acrylamide (DMAA), and sodium allylsulfonate (SA) by aqueous free radical polymerization. The synthesis conditions were optimized by orthogonal experiment. The molecule structure of the synthesized copolymer (WSP) was verified by Fourier transformer infrared spectrum (FTIR) and nuclear magnetic resonance hydrogen spectroscopy ( 1 H-NMR). The molecule weight of the synthesized copolymer was determined by gel permeation chromatography (GPC). The thermal stability of the synthesized copolymer was tested by thermogravimetry and differential thermogravimetry (TG and DTG). When the dosage of WSP is up to 3% in fresh water cement slurry, the FL API can be controlled within 58 mL. In 37% salt water cement slurry, the FL API can be controlled within 90 mL when the dosage of WSP is 5%. The thermal degradation of WSP is not obvious before 289 °C. Compared with a commercial filtrate reducer BS-100L and a reported copolymer HTF200C, the WSP has better performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43824.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 34
·
IF 1.866
Tao Wu,Xiulan Xin,Hongqin Liu,Baocai Xu,Xiaoyan Yu
The free-radical polymerization of alkenyl-terminated polyurethane dispersions with styrene and n -butyl acrylate was performed to obtain a series of stable polyurethane–poly( n -butyl acrylate- co -styrene) (PUA) hybrid emulsions. The core–shell structure of the emulsions was observed by transmission electron microscopy, and the microstructure was studied by 1 H-NMR and Fourier transform infrared spectroscopy. The effects of the poly(propylene glycol)s (number-average molecular weights = 1000, 1500, and 2000 Da) and the mass ratios of polyurethane to poly( n -butyl acrylate- co -styrene) (PBS; 50/50, 40/60, 30/70, 20/80, and 10/90) on the structure, morphology, and properties of the PUAs were investigated. The average particle size and water absorption values of the PUAs increased with increasing of PBS content. However, the surface tension decreased from 34.61 to 30.29 mN/m. PUA-2, with a bimodal distribution, showed Newtonian liquid behaviors, and PUA-3 showed a great thermal stability, fast drying characteristics, and excellent adhesion to packaging films. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43763.
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 34
·
IF 1.866
Tao Wang,Nan Wu,Hui Li,Qu-Liang Lu,Yong Jiang
In this study, we aimed to fabricate a form-stable phase-change hydrogel (PCH) with excellent mechanical properties and heat-storage properties. Sodium alginate (SA) and polyacrylamide (PAAm) composite hydrogels were prepared with ionically crosslinked SA in a PAAm hydrogel network. Glauber's salt [i.e., sodium sulfate decahydrate (Na 2 SO 4 ·10H 2 O)] was incorporated within the hydrogel network as a phase-change material. Scanning electron microscopy micrographs revealed that Na 2 SO 4 ·10H 2 O was confined in the micropores of the hydrogel inner spaces, and differential scanning calorimetry curves showed that the composite hydrogel possessed a considerable storage potential. Mechanical properties tests, such as tensile and compressive measurements, presented a decreasing trend with increasing Na 2 SO 4 ·10H 2 O dosage. We concluded that the prepared composite PCH could be used to design hydrogel materials with thermal-energy-storage applications. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43836.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）