JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55589
·
IF 2.7
Yaqin Zhao,Yangdong Liu,Haoning Zhao,Zhenbin Chen
In this paper, a novel polymeric antistatic agent, TMQ, with excellent antistatic properties, low cost, and good compatibility with polypropylene (PP), was prepared from isopentenyl polyoxyethylene ether (TPEG), maleic anhydride (MAH) and homemade quaternary ammonium salt (QAS). The structure is characterized using FTIR and 1 H NMR. How the addition of TMQ and the molar ratio of TPEG, QAS, and MAH affect the antistatic, mechanical, and crystalline properties of PP are investigated. The results show that as the feed ratio of TPEG, MAH and QAS is TPEG:MAH:QAS = 1:8:8, the modified PP displays the best overall performances. Further exploring finds out when TMQ is added at 15 wt%, the surface resistivity of PP reduces to 6.78 × 10 9 Ω/sq and the volume resistivity of PP reduces to 7.9 × 10 9 Ω cm −1 , the notched impact strength and melt index improve by 357% and 991%, respectively, while the tensile strength decreases by 38.6% compared with that of pure PP. Besides, the crystal study shows after TMQ is added, the crystallinity of PP reduces, the melt peak temperature remains essentially unchanged, and the crystallization peak temperature increases slightly. The material has excellent antistatic resistance to washing and durability, and the changes in relative humidity have little effect on its antistatic properties.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yumei Luo,Kefu Pu,Jie Gao,Yun Zhou,Jinyu Wan,Xiaodong Bai
Two kinds of porous polymer were prepared based on high functionality components. Thermogravimetric analysis (TGA) is used to compare the thermal degradation behavior and kinetics of these two materials. The thermogravimetric tests of rigid polyurethane foam (H-RPUF) and polyurea aerogel (H-PUA) were carried out in nitrogen atmosphere at different heating rates. The thermal degradation characteristics of the porous polymer were obtained. The apparent activation energy ( E a ) of thermal degradation of the porous polymer was investigated by model-free methods. The results showed that the thermal degradation temperature and ash content of H-RPUF were higher than those of H-PUA, and the volatile content was lower. With the rise of heating rate, thermal hysteresis effect of the two porous polymer was relatively high, while the release amount of volatiles was unchanged. For the Kissinger method, E a of H-PUA and H-RPUF was 212.8 kJ mol −1 and 157.4 kJ mol −1 , respectively. According to Starink method, the average activation energy of H-PUA and H-RPUF was 220.2 kJ mol −1 and 107.2 kJ mol −1 , respectively. Obtained by Flynn-Wall-Ozawa model, the average activation energy of H-PUA and H-RPUF was 219.0 kJ mol −1 and 111.5 kJ mol −1 , respectively. The data obtained from the three models all show that E a of thermal degradation of H-PUA is higher than that of H-RPUF, and it is less likely to decompose.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 37
·e55941
·
IF 2.7
Zhitao Yang,Zhen Zhang,Cheng Li,Yiping Fang,Yong Liu,Qingfeng Yi
Since the advent of all-solid-state lithium-ion batteries (ASSLIBs), they have been widely regarded as the ideal high-temperature-resistant energy storage devices. The solid-state electrolyte, a crucial component, should possess high ionic conductivity, excellent flexibility, and significant mechanical strength. Poly(ethylene oxide)-based all-solid-state polymer electrolytes (PEO-ASSPE) appear to meet these criteria. However, PEO-ASSPE exhibits poor stability at elevated temperatures, where localized overheating and internal thermal runaway can lead to battery short-circuit failure. To address these issues, this study employs a ethylene-methacrylic acid copolymer (EMAA) as a structural support polymer, blended via a eccentric rotor mixer. The homogeneously dispersed EMAA within the PEO matrix forms an interpenetrating network structure and interacts with other components, significantly enhancing the high-temperature electrochemical stability of the composite polymer electrolytes (CPEs) while maintaining ionic conductivity. Research has demonstrated that when the EMAA content is 40 wt.%, the resulting CPE-40EMAA exhibit high ionic conductivity (4.07 × 10 −4 S cm −1 ), a high lithium-ion transference number (0.564), a broad electrochemical stability window (5.1 V), and excellent high-temperature lithium metal cycling stability (stable cycling for 800 h at current density of 0.1 mA cm −2 ), which sufficiently meets the electrochemical performance requirements for ASSPEs in high-temperature energy storage batteries.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Xianrui Jiang,Tianyu Hu,Ke Yao,Ruotong Xiong,Jiashu Qu,Qichang Liu,Chaolu Niu,Potao Sun,Wenxia Sima
Thermal faults occur in the continuous operation of electrical equipment. This poses a threat to the stable operation of power systems. However, existing detection methods do not apply to large-scale temperature measurement scenarios due to high cost and poor stability. To solve the above problems, a reversible thermochromic microcapsule is proposed in this work. Silicone rubber composite can be endowed with thermal sensing capability by doping an appropriate amount of thermochromic microcapsules inside the silicone rubber matrix. The test results showed that the color of the obtained thermochromic composites changed sensitively with the change in external temperature. The material undergoes a sudden color change at about 50°C achieving a reversible color change from blue to colorless. The color difference before and after the color change can be up to 37.24. In addition, the color difference shows an exponential decay trend with time. When the dopant concentration of the microcapsules is 1.5 wt%, the composite material shows excellent color-changing performance, and the insulation strength is increased by 6.92% compared with the pure silicone rubber. Meanwhile, the water contact angle of the composite is 115.3°, which proves that it has good hydrophobicity. Notably, the thermochromic composite also showed excellent weathering properties in thermal aging experiments. The thermochromic microcapsule proposed in this work can realize the visualization of the local overheating state of the electrical equipment, which provides a new idea for the application of thermal fault prewarning of the electrical equipment.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 16
·e55264
·
IF 2.7
Yizhe Liu,Yang Wu,Kai Feng,Hui Liu,Chenxi Qin,Meirong Cai,Xiaowei Pei,Feng Zhou
In this work, a hydrophobic guest monomer containing adamant end-group was synthesized and introduced into the acrylamide hydrogel system to prepare macroscopic guest hydrogel. The swelling, transparency, and mechanical properties of the guest hydrogels can be significantly changed by soaking the guest hydrogel into hydrophilic cyclodextrin solution because the hydrophobic guest groups were recognized and covered by the hydrophilic host molecules. In addition, the surface lubrication property could be adjusted by changing the proportion of acrylamide and adamantane monomers in the hydrogel system. More importantly, cyclodextrin can bind with adamantane through host-guest interactions, enabling the adjustment of the hydrophilicity/hydrophobicity properties of the hydrogel system. By controlling the assembly time, the hydrogel with different lubrication behaviors can be obtained. The controllable surface friction that this specific binding of host-guest interaction has broad application prospects in intelligent device, bionic lubrication and other fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 13
·e55170
·
IF 2.7
Chenyue Zhao,Yanan Su,Shaoqiu Zheng,Hangyu He,Xiaoxia Zheng,Zhiqiang Li
A high-toughness epoxy has been prepared using carboxyl-terminated butadiene acrylonitrile (CTBN) as a toughening agent to modify the AG-80 epoxy resin. High-performance carbon fiber/epoxy (CF/EP) composites are fabricated using the CTBN-toughened epoxy resin as the matrix and two types of CF, namely, T800SC and T800HB, as reinforcement. The mechanical properties of the matrix, surface properties of the CFs, tensile properties, and fracture morphologies of the composites are systematically investigated to elucidate the key factors influencing interfacial bonding in high-performance CF/EP composites. The results reveal that the most significant improvement in toughness is achieved when the CTBN content is 6.90 wt.% in the epoxy resin. Owing to the high content of polar functional groups and excellent surface wettability of T800SC, the T800SC/EP composite exhibits superior mechanical properties compared with the T800HB/EP composite.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 35
·e55891
·
IF 2.7
Zhoufeng Wang,Xiubo Long,Bolin Wang,Guojun Cheng,Guoxin Ding,Yingying Liu,Wenlong Yao
A range of new fluorine-containing copolyarylates were successfully produced through interfacial polymerization using hexafluorobisphenol A (BPAF) featuring a symmetric trifluoromethyl group structure, bisphenol B (BPB), and two acyl chloride monomers as raw materials. The results indicated that the synthesized amorphous copolyarylates exhibited good solubility, with number average molecular weights ( M n ) of 19,000–44,000 g/mol, weight average molecular weights ( M w ) of 66,000–159,000 g/mol, and intrinsic viscosities of 0.66–1.19 dL/g. The thermal stability of copolyarylates increased with the increase of BPAF monomer content (0~100%), which was manifested by the linear increase of glass transition temperature ( T g ) from 201.6 to 237.1°C, and the increase of 5% thermogravimetric weight loss temperature ( T 5% ) from 474.1 to 491.5°C. The tensile strength of copolyarylates ranged from 52.63 to 59.93 MPa, the tensile modulus ranged from 1102.08 to 1502.84 MPa, and the elongation at break ranged from 32.0 to 75.5%. In addition, the copolyarylates had good dielectric properties with a dielectric constant of 2.58–3.75 at 10 7 Hz and a dielectric loss tangent of 0.021–0.028.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55612
·
IF 2.7
Yifan Wang,Zhiqiang Yu
In this work, a technique for constructing a three-dimensional (3D) skeleton of hexagonal boron nitride (h-BN) using sugar as the fulcrum and preparing composites by embedding in the epoxy (EP) in a vacuum environment is proposed. The study of thermal conductivity (TC) in polymer composites is conducted through a blend of techniques: laser flashing, theoretical modeling, and finite element simulation. The h-BN skeleton exhibits a honeycomb structure through the scanning electron microscopy findings. Further investigation using finite element simulation demonstrates that conductive networks are formed by the h-BN skeleton within the composites, leading to a notable enhancement in TC. Specifically, the composite for h-BN/EP reaches a TC of 2.25 W/m K when composed of 52 vol% h-BN. A dielectric loss of 0.008 for the composite with the same h-BN loading shows a considerable improvement. The compressive yield strength of the 3D h-BN/EP composites reached 312 MPa at 5 vol% h-BN loading.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhuqing Wang,Yiyang Li,Yupu Meng,Zhiwei Huang,Min Wang
This research employed a simplistic approach to modify polydimethylsiloxane (PDMS) and graphene oxide (GO) onto the surface of the PU skeleton, and then synthesize an oil–water separation material (rGO@PDMS/PU) with photothermal conversion performance and superoleophilic/superhydrophobic properties through high-temperature reduction. The synthesized rGO@PDMS/PU can adsorb organic solvents or oil that are 19–37 times its own weight, while also having a 99.1% oil–water separation efficiency. Additionally, rGO@PDMS/PU also has good photothermal conversion ability. Under the intensity of 1 sunlight ( q = 1 kW m −2 ), its surface temperature can reach 95.4°C within 10 s. Relying on the excellent oil–water selectivity and photothermal conversion capabilities of rGO@PDMS/PU, we also build a novel oil-gathering device that can successfully make oil recovery on the water surface in situ. When the device is under light conditions, its crude oil recovery efficiency is nearly four times higher than when there is no light. Therefore, this new oil-gathering device has broad application prospects in high-viscosity oil leakage incidents such as crude oil and engine oil.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Qing Tan,Chen Mao,Xiaochang Hao,Ye Tao,Xinghou Gong
To address the challenges of high brittleness and poor crystallization capability in polylactic acid (PLA), glass fiber (GF), and polycaprolactone (PCL) were selected as reinforcing and toughening agents, respectively, for property modification. In the resulting composites, an interfacial layer forms between the polymer matrix and GF, significantly influencing the interfacial adhesion quality and the overall mechanical properties of the material. To enhance interfacial compatibility, oleic acid (OA) was introduced as a coating via the hydrophilic Si O Si bonds on the GF surface. Combined with treatment using a silane coupling agent (KH550), this process resulted in dual-surface modification of glass fiber (OKGF). PLA/PCL/GF (or OKGF) composites with mass fractions of 5%, 10%, 15%, and 20% OKGF were fabricated using solution dissolution and melt blending techniques. Scanning electron microscopy analysis revealed excellent interfacial adhesion between OKGF and the polymer matrix. The composite with 15% OKGF content exhibited optimal mechanical properties, achieving maximum tensile strength (65.5 MPa) and modulus (1113.0 MPa), representing a significant enhancement. Moreover, OKGF served as an effective heterogeneous nucleating agent, resulting in a crystallinity of 19.1% at 15% OKGF content—an 88% increase compared with the PLA/PCL blend (10.2%).
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jinlin Man,Xinyue Guan,Guanshao Huang,Junjie Zhou,Han Miao,Xinxin Li
The development of effective dispersants for nanoparticle suspensions is crucial for enhancing the performance and stability of various functional materials. In this study, we investigated a series of comb-like block copolymers with well-defined structures, including both categories of block copolymers and uniformly composed random copolymers, as dispersants for cerium oxide (CeO 2 ) suspensions. Acrylic acid (AA) units were used for anchoring and electrostatic repulsion, while methoxy polyethylene glycol acrylate (MPEGA) units provided additional steric hindrance and solubility. We explored stabilization mechanisms involving polymer topologies, chain lengths, compositions, and molecular interactions from kinetic and thermodynamic perspectives. The results demonstrate significant improvements in dispersion stability with both categories of well-controlled copolymers, especially with uniformly composed random copolymers due to their uniformly distributed multi-point anchoring and balanced electrostatic and steric stabilization. This research not only enhances the fundamental understanding of polymer-nanoparticle interactions and polymer dispersants, but also provides valuable guidance for the tailored design of dispersants for specific industrial and scientific needs.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jiajun Tao,Cheng Ji,Shan Jiang
In this study, core-shell carbon microspheres (CMSs-PZS) were synthesized by coating polyphosphazene (PZS) on the surface of carbon microspheres (CMSs) through one-step polymerization, and they were characterized using infrared spectroscopy and electron microscopy tests. CMSs-PZS were added to polyethylene terephthalate (PET) to prepare flame-retardant PET composites. The effects of CMSs-PZS on the flame retardancy, thermal stability, and mechanical properties of the composites were investigated. The results showed that the introduction of CMSs-PZS into PET significantly enhanced the flame-retardant properties. When the content of CMSs-PZS was 3 wt%, the limiting oxygen index (LOI) value of PET/CMSs-PZS increased to 33.4%, achieving a UL-94 V-0 rating. Thermogravimetric (TG) analysis showed that the initial decomposition temperature of PET composites increased, while the decomposition rate decreased, and the amount of residual carbon increased with the addition of CMSs-PZS. Cone calorimeter test data showed that the peak heat release rate (pk-HRR) of PET/3wt%CMSs-PZS decreased to 450.67 kW/m 2 , and the total heat release (THR) decreased to 22.14 MJ/m 2 . It is shown that during the combustion process, CMSs-PZS decomposes to form a charcoal layer covering the surface of PET, which plays the role of heat and oxygen insulation, effectively inhibiting the combustion of PET and its heat release during the combustion process.
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高影响因子
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