Journal of Applied Polymer Science最新文献_第3页

Evolution from micropinned to polymeric alloy structure of XLPE-PS: Improving electrical properties and mechanism

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-28 DOI: 10.1002/app.56417

Muneeb Ahmed, Lisheng Zhong, Fei Li, Rui Sui, Ming Wu, Jinghui Gao

{"title":"Evolution from micropinned to polymeric alloy structure of XLPE-PS: Improving electrical properties and mechanism","authors":"Muneeb Ahmed, Lisheng Zhong, Fei Li, Rui Sui, Ming Wu, Jinghui Gao","doi":"10.1002/app.56417","DOIUrl":"https://doi.org/10.1002/app.56417","url":null,"abstract":"This research investigates the transition from a micropinned to a polymeric alloy structure in crosslinked-polyethylene-polystyrene (XLPE-PS). Incorporating 2 wt% 10 μm PS particles into low-density polyethylene (LDPE) and crosslinking with 2 wt% dicumyl peroxide (DCP) forms XLPE-PS structures. The polymeric alloy structure, formed at 220°C extrusion, contrasts with the micropinned formed at 150°C. Morphological, thermo-structural, chemical, and crystal properties are examined to understand their impact on electrical properties and charge transport mechanisms. Results indicate that the polymeric alloy effectively resolves void/crack issues, whereas the micropinned exhibits phase separation. Both structures exhibit a benzene-crosslinked network, and variations in these structures lead to significant changes in thermo-structural, chemical, and crystalline properties. The polymeric alloy XLPE-PS shifts the polyethylene (PE) hkl crystal planes, confirming phase shift and optimal alloying. The structural alterations reveal deeper traps and higher densities in the polymeric alloy XLPE-PS, leading to significantly improved electrical properties, including reduced DC conductivity by up to 1.3 and 0.7 decades at 30 and 90°C, and increased DC breakdown strength by up to 40.34% and 16.17% at 30 and 90°C, respectively, compared with micropinned XLPE-PS. This research offers insights into stable high-voltage insulation development.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced functional polymer materials for biomedical applications

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56391

Rokya Elsayed, Yeit Haan Teow

{"title":"Advanced functional polymer materials for biomedical applications","authors":"Rokya Elsayed, Yeit Haan Teow","doi":"10.1002/app.56391","DOIUrl":"https://doi.org/10.1002/app.56391","url":null,"abstract":"Polymer structures are essential in biomedical applications due to their biocompatibility, biodegradability, and ability to form intricate structures on micro- to nanometer scales. This review, emphasizing electrospinning and phase inversion techniques, examines the fabrication strategies and chemical design of polymer structures for biomedical use. Electrospinning, particularly needleless electrospinning, produces nanofibres with high porosity and flexibility and is widely applied in tissue engineering and drug delivery. Phase inversion, including thermal, nonsolvent-, vapor- and evaporation-induced phase separation, allows precise control over polymer properties but faces challenges in terms of cooling rates and solvent characteristics. Chemical design through doping, functionalization, cross-linking and copolymerization enhances the biocompatibility, biodegradability and mechanical properties of polymers, facilitating advanced applications in drug delivery, tissue scaffolding and biosensors. Advanced functional polymers are revolutionizing biomedical fields, offering innovative solutions for therapeutic medicine delivery, disease detection, diagnostics, and regenerative medicine. Despite remarkable progress, challenges, such as scalability, cost-effectiveness, and environmental impact, persist. This review underscores the transformative potential of advanced polymer materials in medical treatments and advocates for continuous research and interdisciplinary collaboration to overcome existing challenges and fully exploit the capabilities of these materials in improving patient care and medical outcomes. Future perspectives highlight enhancing precision control mechanisms, integrating phase inversion with other techniques and developing large-scale production methods to advance the field further.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.56391","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A P,N flame retardant containing flexible chain segments, imparting excellent toughness and flame retardancy to epoxy resins

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56398

Penglun Zheng, Zijian Yang, Haihan Zhao, Chenguang Liu, Quanyi Liu

{"title":"A P,N flame retardant containing flexible chain segments, imparting excellent toughness and flame retardancy to epoxy resins","authors":"Penglun Zheng, Zijian Yang, Haihan Zhao, Chenguang Liu, Quanyi Liu","doi":"10.1002/app.56398","DOIUrl":"https://doi.org/10.1002/app.56398","url":null,"abstract":"In order to enhance the flame retardancy of epoxy resin (EP) without affecting its mechanical properties, a phosphorus-nitrogen synergistic flame retardant (MPCD) was synthesized in this paper by using melamine, paraformaldehyde, 9,10-dihydro-9-oxa-10-phospha-phenanthrene-10-oxide (DOPO) and cashew phenol as the raw materials, which was applied to the Ep in order to improve its flame retardancy and toughness. Experiments have shown that only 5% content of MPCD added into the EPs could achieve a significant LOI of 35.8% and successfully obtained a V-0 rating in UL-94 testing. In contrast, the PHRR with 5% additional MPCD was 456.4 kW/m2 and the THR was 80.2 MJ/m2, which were 52.6% and 29.4% lower than that of pure EPs, respectively. The PHRR of pure EPs was 963.1 kW/m2 and THR was 113.6 MJ/m2, which indicated that the addition of MPCD improved the EP system's flame retardant performance. The impact strength of pure EPs was 13.5 KJ/m2, and 5% addition of MPCD resulted in a 99% increase in the impact strength of EP/MPCD cured samples up to 26.9 KJ/m2, which was explained by the cashew phenol moiety's flexible chain segments. Furthermore, it is discovered by researching its flame-retardant mechanism that the addition of MPCD may significantly improve the carbon layer's capacity to form char and maintain thermal stability. It can also efficiently trap free radicals and dilute the combustible gases produced during combustion. The flame retardant can increase the overall safety of the EP system by acting as a biphasic flame retardant in both the gas and the solidified phases at the same time.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of oxidation-induced aggregation structure transformation of aramid fiber on interfacial adhesion of epoxy resin

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56412

Yang Li, Wei Liu, Jiahao Ma, Jingjing Lei, Ziyi Wang, Le Yang

{"title":"Effects of oxidation-induced aggregation structure transformation of aramid fiber on interfacial adhesion of epoxy resin","authors":"Yang Li, Wei Liu, Jiahao Ma, Jingjing Lei, Ziyi Wang, Le Yang","doi":"10.1002/app.56412","DOIUrl":"https://doi.org/10.1002/app.56412","url":null,"abstract":"The large-scale pretreatment and efficient surface activation of aramid fibers (AFs) before composite fabrication remains a major challenge. In this study, we developed a heat treatment–induced surface modification method to change the reactive groups on AFs. Results indicated that the O/C ratio and the number of ester groups on the AFs as well as the surface morphology of the AFs could be flexibly controlled using the heat treatment–induced surface modification method. Furthermore, the surface oxidation mechanism of the AFs changed from point oxidation to surface oxidation during heat treatment. As the heat-treatment time increased, the crystallinity and tensile strength of the AF monofilament considerably increased. An optimal heat-treatment time of 30 min was provided considering that long-time heating (>30 min) would destroy the surface molecular chains. Under this optimal heat-treatment time, the number of ester groups reached the maximum, which enhanced the reactivity of the AFs in the epoxy resin matrix. The interfacial shear strength between the AFs treated for 30 min and epoxy resin microdroplet increased by 12.64%, reaching as high as 18.17 MPa. Moreover, the contact angle between the AF monofilament and epoxy resin droplet reached a minimum value of 54.7°. Furthermore, the thickness of the interfacial bond layer between the AFs and epoxy resin reached 50–60 nm. These results provide effective theoretical guidance for the large-scale application of AFs in composite materials.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of fluorination of benzothiadiazole units on the properties of alternating cyclopentadithiophene/benzothiadiazole donor/acceptor polymers

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56407

Bakhet A. Alqurashy, Ahmed Iraqi

{"title":"Effects of fluorination of benzothiadiazole units on the properties of alternating cyclopentadithiophene/benzothiadiazole donor/acceptor polymers","authors":"Bakhet A. Alqurashy, Ahmed Iraqi","doi":"10.1002/app.56407","DOIUrl":"https://doi.org/10.1002/app.56407","url":null,"abstract":"A set of narrow bandgap conjugated polymers was prepared, using cyclopentadithiophene (CDT) donor units coupled with benzothiadiazole (BT) acceptor units substituted with either no fluorine atoms (A1), one fluorine atom (A2) or two fluorine atoms (A3), using the Stille cross coupling reaction. The addition of two electron-withdrawing fluorine atoms to the BT units was observed to deepen the HOMO energy level of the resulting copolymer, while only slightly affecting the LUMO level, as evidenced by cyclic voltammetry examination. The alternating copolymers (CDT-A1, CDT-A2 and CDT-A3) possess small optical bandgaps of 1.37, 1.43 and 1.51 eV (which should efficiently harvest a broad part of the solar spectrum), and a moderate HOMO level of −5.00, −5.05 and −5.12 eV, respectively. CDT-A3 displayed the highest optical/electrochemical-bandgap and the deepest HOMO level, a consequence of the addition of the fluorine atoms on the BT moieties. Inclusion of two fluorine atoms resulted in sharper X-ray diffraction peaks in the CDT-A3 copolymer with respect to its analogues CDT-A1 and CDT-A2 copolymer indicating a greater crystallinity. These findings clearly demonstrate that fluorination of BT units is an effective approach for adjusting the energy levels and optical properties of BT-based materials for use in organic solar cells devices as well as for other applications.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hollow glass microsphere/polybutadiene composites with low dielectric constant and ultralow dielectric loss in high-frequency

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56351

Ting Ren, Ruikun Wang, Yang Zhang, Shengqiang Nie, Shaoyun Guo, Xianlong Zhang

{"title":"Hollow glass microsphere/polybutadiene composites with low dielectric constant and ultralow dielectric loss in high-frequency","authors":"Ting Ren, Ruikun Wang, Yang Zhang, Shengqiang Nie, Shaoyun Guo, Xianlong Zhang","doi":"10.1002/app.56351","DOIUrl":"https://doi.org/10.1002/app.56351","url":null,"abstract":"High-frequency dielectric materials have been widely and rapidly applied in areas such as automotive radar, Internet of Things, artificial intelligence, and quantum computing. Currently, the challenge in high-frequency dielectric materials lies in reducing the dielectric constant (Dk) and dielectric loss (Df) without sacrificing its mechanical properties. This study addresses this challenge by introducing air, as the most common “low dielectric factor,” into the polymer matrix in the form of hollow glass microspheres. Meanwhile, the reactive vinyl groups were also introduced onto the surface of the hollow glass microspheres, enabling an interfacial chemical reaction between the side vinyl groups of polybutadiene and its surface so that the organic–inorganic interface compatibility and interface peel strength are simultaneously improved. Consequently, the minimum Dk of 1.29 and Df of 0.0012 in 3–18 GHz are achieved, and the interface peel strength also reaches 0.65 N/mm. Molecular dynamics simulations, analysis of dielectric properties, and interface peel strength reveal the influence of hollow glass microspheres' morphology and chemical structure on their high-frequency dielectric performance and adhesive strength. This paper provides effective strategies for the structural design and preparation of high-frequency, low-dielectric composites, contributing to the further development of next-generation microwave communication devices towards higher frequencies and faster information transmission.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 2","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using multi-component carbon composite as current collector in ultra-battery

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-27 DOI: 10.1002/app.56345

Mohammad Aghabararpour, Malek Naderi, Seyed Hassan Jafari, Siamak Motahari, Arash Ghazitabar

{"title":"Using multi-component carbon composite as current collector in ultra-battery","authors":"Mohammad Aghabararpour, Malek Naderi, Seyed Hassan Jafari, Siamak Motahari, Arash Ghazitabar","doi":"10.1002/app.56345","DOIUrl":"https://doi.org/10.1002/app.56345","url":null,"abstract":"This study introduces a multi-component composite as a substitute for lead grids in ultra-battery structures. The presented composite decreases the weight and simultaneously extends the cycle life of the traditional lead-acid battery. Overall, UBZCP (the sample containing metal oxides and polyaniline), as the best sample, increases the cyclic stability by 3.3 and 1.4 times under high rate partial state of charge (HRPSoC) mode, compared to Native and UB450 samples. Metal oxides predominantly enhance the electrical conductivity of carbon-based composites due to catalytic effects in the reduction of graphene oxide during heat treatment. Poly aniline shows considerably positive effect of electrochemical performance due to the high pseudo-capacitive properties, high interaction of lead ions and the nitrogen in the polymer chains and accordingly hydrogen evolution reaction (HER) inhibition. The synergistic effect of polyaniline and metal oxides makes the best performance in the UBZCP sample achieve. Also, the UBZCP sample represented an enhancement of about 1.21 and 1.39 times in battery life and specific capacity under deep discharge mode compared to the Native sample. As a result, the introduced multi-component composite making a 3D conductive network, facilitates Pb/PbSO4 reaction reversibility, and reduces the lead sulfate crystal size.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 2","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of styrene-phenylamine monomer copolymer nanospheres and its performance for stabilizing CO2 foam

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-26 DOI: 10.1002/app.56416

Jiaqi Huang, Jian Zhang, Xiujun Wang, Bo Huang, Zhao Hua, Shenwen Fang

{"title":"Preparation of styrene-phenylamine monomer copolymer nanospheres and its performance for stabilizing CO2 foam","authors":"Jiaqi Huang, Jian Zhang, Xiujun Wang, Bo Huang, Zhao Hua, Shenwen Fang","doi":"10.1002/app.56416","DOIUrl":"https://doi.org/10.1002/app.56416","url":null,"abstract":"Improving the stability of CO2 foam is a core concern in CO2 foam flooding oil recovery technology. Using hydrophobic nano-SiO2 to enhance the stability of CO2 foam is a common approach, but hydrophobic nano-SiO2 faces challenges, such as easy aggregation, difficult dispersion, and performance needs to improve. In this article, a novel dispersion of styrene-phenylamine monomer copolymer (PSSN) nanosphere with primary amine groups on the surface was synthesized. The synthesis conditions of PSSN were optimized, and its performance for stabilizing CO2 foam was evaluated. The experimental results demonstrated that PSSN had better performance for stabilizing CO2 foam than that of hydrophobic nano-SiO2 when using cocamidopropyl betaine (CAB) as the foaming agent. With the CAB concentration of 4000 mg/L and PSSN concentration of 100 mg/L in the brine having salinity of 8460 mg/L, the half-life of CO2 foam at 90°C was 131 min, which was 43 min longer than that stabilized by hydrophobic nano-SiO2 under the same conditions. This is for the first time that polystyrene microspheres with amine groups on the surface was used to stabilize CO2 foam. The study provides a new nanoparticle option for stabilizing CO2 foam.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of low-temperature self-crosslinking acrylic resin and its performance research

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-26 DOI: 10.1002/app.56393

Hua Xin, Peiyi Zhang, Yiyi Xu, Bo Gao, Luoqi Yuan, Minli Wei

{"title":"Preparation of low-temperature self-crosslinking acrylic resin and its performance research","authors":"Hua Xin, Peiyi Zhang, Yiyi Xu, Bo Gao, Luoqi Yuan, Minli Wei","doi":"10.1002/app.56393","DOIUrl":"https://doi.org/10.1002/app.56393","url":null,"abstract":"Acrylic resin, as a common coating and adhesive, possesses excellent heat resistance, weather resistance, and is inexpensive, making it widely used in industries related to automotive, construction, electronics, fabrics, and other sectors essential to our daily life. Traditional acrylic resin not only pollutes the environment but also poses certain health risks. Therefore, we studied the synthesis of a low-temperature self-crosslinking acrylic emulsions were synthesized by free radical solution polymerization using methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA), diacetone acrylamide (DAAM), hydroxypropyl acrylate (HPA), epoxy resin (E-51) as the monomers, vinyltriethoxysilane (A-51) as the coupling agent, and adipic dihydrazide (ADH) as the cross-linking agent. This water-based acrylic resin undergoes a crosslinking reaction between the carbonyl group of DAAM and the hydrazide group of ADH, substantially improved the drying speed and adhesion compared to unmodified versions, and also improved the thermal stability. The contact angle of the film increased from 72.8° to 86.9° with the increase of the degree of cross-linking, and the mechanical properties were improved by 60%. This study provides a suitable formulation for preparing water-based acrylic resins with superior performance.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A hydrogel sensor based on conic baston structure

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2024-10-26 DOI: 10.1002/app.56419

Jian Qi, Lukui Yin, Guoliang Zhang, Yang Li, Shuxian Zheng, Shuo Gao, Dake Huang, HouJun Qi

{"title":"A hydrogel sensor based on conic baston structure","authors":"Jian Qi, Lukui Yin, Guoliang Zhang, Yang Li, Shuxian Zheng, Shuo Gao, Dake Huang, HouJun Qi","doi":"10.1002/app.56419","DOIUrl":"https://doi.org/10.1002/app.56419","url":null,"abstract":"Resistive flexible pressure sensors are extensively employed in wearable devices owing to their wide operational range and straightforward construction. This study presents a conic bastion-structured sensor microunit to improve the sensor sensitivity. The base hydrogel is synthesized using acrylamide (AM), with Mg2+ and Na+ acting as conductive ions. The sensor is fabricated using digital light processing (DLP) 3D printing technology and is subjected to experimental evaluation. The findings indicate that the hydrogel sensor with a 50 wt% AM composition demonstrates enhanced mechanical strength and conductive properties, achieving a peak sensitivity of 0.534 kPa−1 within a pressure range of 0–0.8 kPa. Furthermore, the sensor exhibits favorable response characteristics (30 ms) and recovery characteristics (40 ms), along with stability. The proposed sensor is suitable for wearable devices and live joint angle detection. Additionally, the “handwriting fingerprint” pattern recognition and document verification proposed in this article make it applicable in scenarios, such as banking, notarization, and other handwriting and seal verification contexts.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0