JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Youwei Zhu,Jiaming Liu,Jingjing Qin,Dingsong Wang,Wanyan Li,Chang-An Xu,Liyan Liang
The poor dielectric properties of epoxy resins limit their application in microelectronics, and active ester curing agent is an effective means to enhance the dielectric properties of epoxy resins. However, the phenyl active ester curing resins nowadays have the problem of low mechanical properties. In this work, a novel naphthalene-based active ester-cured resveratrol epoxy resin system (REP/NDA) was prepared for the first time. Compared with the phenyl-active ester-cured epoxy resin (REP/PDA), the naphthyl-active ester prepared epoxy resin has obvious advantages in mechanical properties. The experimental results indicated a tensile strength measurement for REP/NDA at 91.9 MPa, the tensile strength of REP/PDA was 65.3 MPa, and the tensile strength of REP/NDA was 141% of that of REP/PDA. The prepared REP/NDA epoxy resin exhibits favorable dielectric properties, evidenced by a dielectric constant of 3.02 at 10 MHz and a dielectric loss of 0.0042, very good thermal stability ( T 5% of 379°C), excellent water absorption (only 0.49% for 7 days from 2 to 8°C) and good dimensional stability (coefficient of thermal expansion below T g of 77 ppm). The first synthesis of naphthalene-based active ester curing agent offers a reference for creating new low dielectric epoxy resin materials that work out exceptionally.
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Bo He,Jianuo Ma,Luobing Xiang,Han Wang,Xi Wang,Chunwang Yi
As a representative of dope-dye, the color masterbatch method has been widely applied in modern dyeing processes, while it has difficulties in solving the dispersibility of inorganic pigments color master batch in the polymer matrix. In this work, attapulgite (ATP) was used as the adsorption carrier of inorganic pigments to prepare color-dyed attapulgite (CD-ATP). The selected environmentally friendly inorganic pigments were well adsorbed by ATP in KOH aqueous solution, and could stably be monodispersed in KOH aqueous solution for more than 168 h. Moreover, the KOH aqueous solution could be reused repeatedly, thereby, a sustainable method to prepare novel CD-ATP was realized. By blending the as-prepared CD-ATP with polyamide-6 (PA6), a series of dope-dyed colorful PA6 composites was prepared. Scanning electron microscope (SEM) results indicated that the CD-ATP was still monodispersed in the PA6 matrix, and endowed PA6 with a vivid color. Further studies show that the adding of CD-ATP had little influence on the properties of PA6, but significantly reduced the water adsorption. This novel color-dyed ATP has potential implications in making paper-making blankets and is highly expected to have more extensive applications in many fields of life.
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Wei Zhao,Yifan Song,Zhen Song,Jiaxin Li,Yuanjing Zhang,Wenxia Zhao,Huaijun Chen,Yangyang An,Ziyan Wang,Siyu Ma,Haoxian Li,Wenzhuo Ma,Kaihong Hui
Polycarbonate-acrylonitrile-butadiene-styrene (PC-ABS) has been treated with an aqueous solution of N -methylpyrrolidone (NMP) and ethanol (C 2 H 5 OH) under conditions that achieve a controlled level of polymer swelling. In addition, the micro-etching effect of alkaline potassium permanganate on PC-ABS was investigated using a low environmental impact binary micro-etching system. The effect of NaOH concentration, etching time, and temperature on surface roughness, morphology, wettability, and PC-ABS adhesion strength has been examined. The PC-ABS surface characteristics were analyzed using field emission scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform-infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results have demonstrated that the surface morphology was altered after micro-etching, with an increase in surface roughness ( R a ) from 9.69 to 316 nm. In addition, the contact angle decreased from 92.2° to 30.1°, and the adhesion strength increased to 0.88 kN/m. The findings of this study have established an effective micro-etching process using alkaline potassium permanganate that enhances the wettability, surface roughness, and adhesion strength of the PC-ABS copolymer.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 17
·e56781
·
IF 2.8
Yanru Chen,Linbo Wu
2,2,4,4-Tetramethyl-1,3-cyclobutanediol (CBDO) based copolyesters like poly(cyclohexane dimethylene-co-2,2,4,4-tetramethyl cyclobutylene terephthalate) (PCcBT) has high transparency, heat-resistance and safety and has been commercialized to replace bisphenol A polycarbonate in food contact applications. However, its synthesis and processing suffer from CBDO sublimation, composition deviation and relatively poor thermal stability. In order to obtain transparent heat-resistant CBDO-based copolyesters with improved synthesis robustness and thermal stability, poly(ethylene co-tetramethyl cyclobutene terephthalate (PEcBT)) copolyesters were synthesized from ethylene glycol (EG), CBDO, and terephthalic acid (TPA) via direct esterification route, and the structure–property was studied. It is found that the presence of EG effectively inhibited the sublimation of CBDO, and the resulting PEcBT copolyesters had reasonably good thermal stability so that the melt polycondensation proceeded smoothly without serious foaming. PEcBT copolyesters with intrinsic viscosity ([η]) over 0.60 dL/g were successfully synthesized at copolymer composition ( ϕ cBT ) up to 67 mol%. A quantitative relationship between T g and its influence factors is established. The copolyesters with ϕ cBT of 48–62 mol% displayed T g of 126°C–144°C, flexible tensile behavior, satisfactory tensile properties and reasonably good impact performance. Ternary PEPecBT copolyesters were also synthesized using 1,5-pentanediol as another diol comonomer to improve toughness of the materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 14
·e56693
·
IF 2.8
Zi-Ang Xia,Long Wang,Chaojie Li,Xue Li,Jingxue Yang,Baoming Xu,Heng Zhang
The augmentation of chitosan's (CS) antioxidative and antibacterial properties via grafting with phenolic acids constitutes a significant method for expanding the utility of chitosan. In this investigation, four phenolic acids (gallic acid, GA; protocatechuic acid, PCA; hydroxybenzoic acid, HA; and salicylic acid, SA) were conjugated with CS utilizing carbodiimide (EDC)-mediated grafting. The resultant phenolic acid-CS graft copolymers underwent characterization employing infrared spectroscopy, x-ray diffraction, and thermogravimetric analysis. Furthermore, ex vivo antioxidative and antibacterial assays were performed. Findings revealed that among the synthesized phenolic acid-chitosan graft copolymers, gallic acid-chitosan (GA-CS) demonstrated the highest antioxidative and antibacterial efficacy, primarily attributed to its elevated grafting ratio and abundance of hydroxyl groups. The antioxidative and antibacterial performances of the remaining three graft copolymers followed this order: CS-PCA > CS-HA > CS-SA, aligning with the trend in grafting ratios. This correlation arises from the higher grafting ratios of copolymers yielding more active OH groups, thereby exhibiting enhanced antioxidative and antibacterial properties. Phenolic acid-chitosan graft polymers exhibit promising antioxidative and antibacterial attributes, making them suitable additives for application in the food preservation packaging industry.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Qixin Huang,Xueying Shan,Yuxuan Diao,Boyou Hou,Jinchun Li,lizhi Wang
Epoxy resin (EP) is widely used in engineering plastics, but its inherent flammability limits its broader applications. In this study, EDVAPC, a phosphorus and nitrogen-containing flame retardant, was synthesized through the Schiff reaction. Then it was incorporated into EP to enhance flame retardancy, which was used as a gas-phase and condensed-phase flame retardant. The results showed that the addition of EDVAPC maintained the good transparency of EP composites. Additionally, the maximum heat weight loss rate of EP-6%-EDVAPC reduced from 1.56%/°C to 1.31%/°C, indicating improved thermal stability. When 6 wt% EDVAPC was added to EP, the vertical combustion test (UL-94) rating achieved V-0, and the limiting oxygen index (LOI) increased to 31.2%. Compared to pure EP, the peak heat release rate (PHRR), total heat release (THR), total smoke production (TSP), and peak smoke release rate (PSPR) decreased by 33.3%, 9.1%, 39.8%, and 25.3%, respectively. Importantly, the mechanical properties of EP were not compromised. The tensile strength remained, and the impact strength was increased by 5%.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xiaoman Tang,Yongbin Huang,Xiulan Guo,Chang-An Xu,Teng Yuan
Although bio-based polyurethane materials have attracted much attention due to their characteristics such as renewable and long service life conventional polyurethane materials do not have self-healing properties due to structural limitations, leading to their limited application. Imine bond is a kind of dynamic and reversible covalent bond, which can self-heal damaged materials under mild conditions. Based on this, this work utilized p-phthalaldehyde and poly (propylene glycol) bis (2-aminopropyl ether) to prepare T-NH monomers containing imine bonds. Subsequently, four kinds of bio-based polyurethanes containing T-NH were synthesized from castor oil, epoxy soybean oil, glycerol monostearate, and Sorbitan monooleate under UV conditions. The self-healing performance of bio-based polyurethane materials containing imine bonds was evaluated through optical microscopy and mechanical properties. The results showed that the coating had certain self-healing properties at room temperature, and the self-healing efficiency of the coating was greatly improved when heated to 50°C. Among them, the polyurethane material prepared from glyceryl monostearate had the best self-healing ability, with a self-healing efficiency of 90% and a healing cycle of 4 times. This work not only enhanced the added value of biomass materials but also provided a reference for the preparation of polyurethane materials with self-healing properties.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zixuan Wang,Wenhao Gao,Zhengchun Cai,Haian Xia
Poly(ethylene 2,5-furandicarboxylate) (PEF) and poly(butylene 2,5-furandicarboxylate) (PBF) are regarded as two of the most promising materials derived from furandicarboxylic acid. The modification of these two polyesters has become one of the hot research topics. It was reported that their mechanical properties had significant shortcomings, particularly for low molecular weight PBF, whose brittleness limited its use. In this work, a novel monomer, itaconic acid, was introduced to modify PBF, and a new furan-based polyester-poly(1,4-butylene furanoate-co-itaconate) (PBFIs) was synthesized. For the first time, itaconic acid up to 47% was incorporated to synthesize the polyester materials. The structural and thermomechanical properties of these polyesters were investigated using Gel Permeation Chromatography (GPC), Proton Nuclear Magnetic Resonance ( 1 H NMR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), X-ray Diffraction (XRD), and tensile testing. Compared to PBF, the PBFIs exhibited reduced crystallization ability attributed to the formation of crosslinked networks; notably, their glass transition temperature decreased significantly to as low as 7°C, while thermal stability improved. Tensile tests further demonstrated that their elongation at break increased dramatically by up to 675%. In summary, the results suggest that PBFIs possess significant potential in the realm of thermoset elastomers, thereby expanding the application scope of furan-based polyesters.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Chaoquan Wei,Yu Han,Ting Wang,En Zeng
To overcome the persistent issue of poor water resistance in single-component waterborne automotive varnish coatings, a novel AAEM (acetoacetoxyethyl methacrylate)-modified acrylic resin has been developed for single-component, waterborne automotive coatings, delivering exceptional improvements in water resistance, thermal stability, and corrosion protection. By precisely adjusting the ratio of methyl methacrylate to butyl acrylate and integrating methacrylic acid and N , N -dimethylethanolamine to enhance hydration stability, the resin achieves optimal hardness, flexibility, and adhesion. The incorporation of 10% acetoacetoxyethyl methacrylate dramatically enhances water resistance, extending beyond 10 days, while improving thermal durability and barrier performance, as confirmed by thermogravimetric and electrochemical analyses. Remarkably, the varnish achieved a high crosslinking density at just 110°C, resulting in a durable coating with 2H hardness. These advancements deliver superior weatherability and longevity, positioning this eco-friendly varnish as an innovative solution that meets the automotive industry's growing demand for sustainable, high-performance coatings.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shuai Yuan,Jian Hu,Jin Yang
Conductive polyurethane (CPU) with excellent processability has broad prospects in the communication field. However, the poor thermal stability of polyurethane (PU) limits its application. To solve this problem, a type of CPU with heat resistance was synthesized from p-phenylene diisocyanate (PPDI), poly-(tetramethylene ether) glycol (PTMG), aniline trimer (AT), and subsequently doped with camphorsulfonic acid (CSA). Besides, both polydimethylsiloxane (PDMS) and polycarbonate diol (PCDL) were introduced into CPU backbones, and PPDI-based CPU (PCPU) was synthesized with a high reaction efficiency of 94%. The structure of PCPU was confirmed by FT-IR, 1 H NMR, and GPC. The microphase separation structure, thermal stability, mechanical properties, and conductive performances were investigated using multiple characterization techniques such as DSC, XRD, TGA, DMA, and so on. The addition of PDMS promoted microphase separation and significantly improved the thermal stability of PCPU. Meanwhile, introducing PCDL into soft segments might increase the hydrogen-bond content in the PU system. When the molar ratio of PTMG to PCDL is 3:1, the thermal stability and mechanical properties of PCPU can be maximized. Furthermore, the conductive segments composed of AT formed a spatial conductive network within the PCPU. Obviously, such highly heat-resistant PCPU showed considerable potential for being used in high-temperature environments.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jingya Dai,Yusong Xu,Tao Zhang,Xianming Zhang
Waterborne polyurethane (WPU) is a promising surface finishing agent for polyethylene terephthalate (PET) ropes used in marine operations, industrial lifting, outdoor activities, and agricultural settings. However, WPU exhibits poor flame retardancy, and developing a WPU coating that enhances the flame retardancy of PET ropes while maintaining good mechanical properties remains a challenge. Herein, we report PET ropes coated with flame-retardant waterborne polyurethane (FRWPU) synthesized from epoxidized soybean oil-based phosphorus-containing polyol and poly(propylene glycol). The breaking strength of FRWPU coated PET rope (PET–FRWPU) reaches 8092 N, which is more than twice that of pristine PET rope; the elongation at break reaches 82.30%, nearly twice that of pristine PET rope. The PET–FRWPU achieves a V-0 rating in the UL-94 test, and the time required for a vertical flame to burn through the horizontal rope is extended to 90 s, more than twice that of pristine PET rope. In the cone calorimetry test, the PET–FRWPU inhibits heat release and smoke release more effectively compared to the pristine PET rope. Moreover, the FRWPU coating can withstand 800 cycles of abrasion and bending tests. This study provides insights into the design and manufacture of flame-retardant coatings for PET ropes.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhipeng Luo,Peng Cai,Wenhui Chen,Jiaxing Chen,Silong Cai,Haochen Huang,Zixin Liu,Hefeng Zhang,Yifu Huang
Applying a nonchemical approach of polymer crystallizing for altering micro-conformations of a nonconjugated linear polymer can promisingly achieve enhanced photoluminescence without sacrificing mechanical properties of the matrix. Herein, to pursue an excellent nucleating agent for tuning the crystallization micro-conformation, a new type of two-dimensional polymer nanosheet (2DP) with benzimidazole-linked structure, with high specific surface area and unique shape morphology, was synthesized for frozen/thawed (F/T) polyvinyl alcohol (PVA)-based ionogel, which could provide an efficient way to significantly enhance the fluorescence of PVA by inducing crystalline conformation without changing chain topology. Notably, incorporating a mere ~0.05 wt.% of 2DP elevated the quantum yield of the PVA ionogel from 9.2% to an impressive 85.7%. Besides, at a higher 2DP doping of ~0.7 wt.%, a distinct afterglow effect originating from 2DP was also observed. It was revealed for the first time that the F/T cycle during the preparation of the PVA ionogel could effectively increase the photoluminescent intensity, mainly ascribed to PVA but not 2DP. The fluorescence enhancement within the ionogel could be predicted by quantum chemistry calculations and a deep learning model. This new ionogel shows great potential as smart luminescent polymer for flexible lampshade.
✓ 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）