Polymers for Advanced Technologies最新文献_第9页

Flexible and wearable multilayer structure fiber sensor for motion and human physiological signal monitoring 用于运动和人体生理信号监测的柔性可穿戴多层结构光纤传感器

4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-09-01 DOI: 10.1002/pat.6552

Di Wu, Ling Weng, Xiaorui Zhang, Lizhu Guan, Zijian Wu

{"title":"Flexible and wearable multilayer structure fiber sensor for motion and human physiological signal monitoring","authors":"Di Wu, Ling Weng, Xiaorui Zhang, Lizhu Guan, Zijian Wu","doi":"10.1002/pat.6552","DOIUrl":"https://doi.org/10.1002/pat.6552","url":null,"abstract":"Abstract The development of flexible piezoresistive sensors has increasingly attracted widespread attention due to their various potential applications in wearable devices, human–machine interfaces, and health monitoring systems. Developing high‐performance sensors that can accurately monitor movement and human health monitoring is very necessary. This study uses silver nanoparticles, MXene, and polypyrrole to prepare conductive fabrics based on various fabrics through layer‐by‐layer encapsulation. Finally, conductive fabrics with different layers were encapsulated to prepare a multilayer fiber sensor. Next, the series piezoresistive performance of sensors made of different fabric materials and sensors with different layers were tested. The experimental results show that the sensor prepared has the best performance when the selected fabric material is mulberry silk and the number of layers of the fabric is five. After testing, the sensitivity of the sensor is 4.9029 at low strain and 0.7901 at high strain. Moreover, it exhibits good stability during 1600 compression‐release cycles and temperatures range from −20 to 60°C. The designed sensor performs well in motion and human physiological signal monitoring. This study provides new ideas and references for the design and research of multilayer fiber sensors.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"35 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

The polytannic acid‐Fe(III) functionalized graphene oxide in poly (propylene carbonate) nanocomposite enabling enhanced shape memory, UV‐resistance, and self‐healing performance 聚单宁酸-铁（III）功能化了聚碳酸丙烯酯纳米复合材料中的氧化石墨烯，增强了形状记忆、抗紫外线和自愈性能

4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-09-01 DOI: 10.1002/pat.6580

Xinqi Ren, Zhihai Yang, Zhong Xie, Xingyu Gao, Peiyuan Zuo, Qixin Zhuang

{"title":"The polytannic acid‐Fe(<scp>III</scp>) functionalized graphene oxide in poly (propylene carbonate) nanocomposite enabling enhanced shape memory, <scp>UV</scp>‐resistance, and self‐healing performance","authors":"Xinqi Ren, Zhihai Yang, Zhong Xie, Xingyu Gao, Peiyuan Zuo, Qixin Zhuang","doi":"10.1002/pat.6580","DOIUrl":"https://doi.org/10.1002/pat.6580","url":null,"abstract":"Abstract Polypropylene carbonate (PPC) is a promising candidate of substrate materials used for human wearable devices due to its excellent ductility and biocompatibility. However, PPC is prone to be deformed, thus resulting in poor shape recovery property. One effective solution is to construct composites. In this work, poly (tannic acid) with Fe 3+ (FPTA) @ graphene oxide (GO) was added to fabricate FPTA@GO/PPC composites. The results show that FPTA@GO can construct a tight network of hydrogen bonds into PPC to improve shape memory and self‐healing properties. By varying the FPTA@GO content, the composites exhibit tunable shape memory property. Dynamic mechanical analysis confirms that FPTA@GO/PPC composites show better shape memory properties compared with pure PPC. 5 wt% FPTA@GO/PPC composite demonstrates superior shape fixation ratio ( R f = 99%) as well as superior shape recovery ratio ( R r = 94%) in 37°C. Moreover, 5 wt% FPTA@GO/PPC composite possesses great self‐healing efficiency of 81% and tensile strength (17.2 MPa). The UV absorption capacity of 5 wt% FPTA@GO/PPC is increased by 150% (far and mid‐UV regions) and 400% (near‐UV region) compared with pure PPC. Thus, FPTA@GO/PPC composites have potential applications in developing shape memory, self‐healing, and UV‐resistant materials for human wearable devices.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"35 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fabrication of n‐p heterostructure of polyaniline–barium zirconate nanocomposites sensor device for the detection of diazomethane gas 制作用于检测重氮甲烷气体的 n-p 异质结构聚苯胺-锆酸钡纳米复合材料传感器装置

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-30 DOI: 10.1002/pat.6569

S. Manjunatha, Ameena Parveen, Aashis S. Roy

{"title":"Fabrication of n‐p heterostructure of polyaniline–barium zirconate nanocomposites sensor device for the detection of diazomethane gas","authors":"S. Manjunatha, Ameena Parveen, Aashis S. Roy","doi":"10.1002/pat.6569","DOIUrl":"https://doi.org/10.1002/pat.6569","url":null,"abstract":"Nanoparticles of barium zirconate were prepared by sol–gel method and used for the preparation of nanocomposites. Polyaniline fibers and its nanocomposites with barium zirconate were prepared by in‐situ polymerization at various percentages of 1 wt%, 2 wt%, 3 wt%, 4 wt%, and 5 wt%. The prepared polyaniline nanocomposites were subjected for determination functional group by FTIR spectra and XRD analysis. The surface morphology is important aspect of sensor studies, which is illustrated by SEM and TEM image. DC conductivity of the pristine PANI and its nanocomposites increases with increase in temperature up 200°C. It is evident that the increase in conductivity is due to the hopping of charge carriers from valence band to conduction band. Among all the nanocomposites, 3 wt% of polyaniline nanocomposite shows the high conductivity of 18.6 S/cm. It is also noted that 3 wt% polyaniline nanocomposites have a higher sensitivity of 86.2% at 300 ppm when compared with other compositions. This could be because of formation strong connections between the polyaniline fibers and nano‐oxide as a resulted of enhanced node connections, high surface area and porosity through optimized nanomaterials doping. The nanocomposites sensitivity restored in 89 s after the gas was removed, responding in 23 s at 300 ppm.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"317 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High‐performance shape memory characteristics by integrating urea linkages into the polyurethane elastomer 通过在聚氨酯弹性体中加入尿素链节实现高性能形状记忆特性

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-28 DOI: 10.1002/pat.6560

Jaeheon Lee, Jung Hyeun Kim

{"title":"High‐performance shape memory characteristics by integrating urea linkages into the polyurethane elastomer","authors":"Jaeheon Lee, Jung Hyeun Kim","doi":"10.1002/pat.6560","DOIUrl":"https://doi.org/10.1002/pat.6560","url":null,"abstract":"Shape memory polymers have been widely researched to develop multifunctional materials that respond smartly to external stimulations and programmed signals. Among them, shape memory polyurethane (SMPU) is drawing great attention owing to its highly tunable properties and ease of integrating new functions. However, the effect of urea bonds on SMPU elastomers has rarely been investigated because of the extreme reactivity of amine crosslinkers. In this study, we used diethanolamine (DEOA), which contains a secondary amine, as the crosslinker for SMPU synthesis. Unlike other crosslinkers containing primary amines, they can form urea bonds in a more gentle manner. The urea bonds reinforce the intermolecular interactions between the hard segments with strong hydrogen bonding, thus increasing the phase separation and degree of crystallization. Consequently, the urea‐containing SMPU exhibits improved mechanical strength and shape memory abilities for both fixing and recovery. Moreover, the transcarbamoylation reaction, which enables the reconfiguration of the original shape, is observed. The introduction of the urea bonds into the SMPU elastomer can be beneficial in achieving flawless shape memory performances in various sensitive applications.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"63 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of novel electrochemical sensor functionalized with green nanoparticles for tetracycline monitoring 设计新型电化学传感器，用绿色纳米颗粒对四环素进行监测

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-28 DOI: 10.1002/pat.6543

Manahil Babiker Elamin

{"title":"Design of novel electrochemical sensor functionalized with green nanoparticles for tetracycline monitoring","authors":"Manahil Babiker Elamin","doi":"10.1002/pat.6543","DOIUrl":"https://doi.org/10.1002/pat.6543","url":null,"abstract":"Increasing the release of antibiotics in particular tetracycline in the environment is become one of the most concerns that threat human and animals' health. Regarding their low cost, sensitivity, portability, electrochemical sensors have received attention for tetracycline monitoring. With a nanostructure, diverse active functional sites, and good conductivity, green nanoparticles are considered now as an attractive material for sensors design. The objective of the present paper is then the design of electrochemical sensor functionalized with green nanoparticles based on gum Arabic for tetracycline detection. The green nanoparticles are synthesized by direct reduction of silver nanoparticle with gum Arabic polymer. The intrinsic properties of the obtained nanoparticles are examined using different techniques namely UV–Vis absorption (UV), X‐ray diffraction (XRD), transmission electron microscopy (TEM), and thermogravimetric TGA. To follow up, the sensor modification as well as tetracycline detection, cyclic voltammetry (CV) and square wave voltammetry are carried out. Correlation between the different results have demonstrated good dispersion and homogeneity of green nanoparticles, with good applicability in electrochemical measurements. In fact, the sensor has demonstrated wide concentrations range from 0.1 to 1250 nM with a limit of detection in the order of 0.056 nM, lower than those reported in the literature. The selectivity test, investigated against a various interfering with similar structure to tetracycline, have proven a good discrimination between all molecules. In addition, the sensor was successfully applied to real samples, and the found recovery rates are ranging from 90.4% to 106.9%. The obtained results confirm that green nanoparticles based on gum Arabic could commercially be viable for next generation of electrochemical sensor for tetracycline detection, and also could be applied for the detection of the variety of pharmaceutical pollutants in the environment.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"16 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and rheological analyzes of temperature and light sensitive gels comprising amphiphilic azobenzene polymers, chitosan and pluronic F127 由两亲性偶氮苯聚合物、壳聚糖和pluronic F127组成的温敏和光敏凝胶的合成与流变分析

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-28 DOI: 10.1002/pat.6540

Mahinur Alemdar, Seyma Nur Kirmic Cosgun, Deniz Ceylan, Hatice Kubra Batu, Binnur Aydogan Temel

{"title":"Synthesis and rheological analyzes of temperature and light sensitive gels comprising amphiphilic azobenzene polymers, chitosan and pluronic F127","authors":"Mahinur Alemdar, Seyma Nur Kirmic Cosgun, Deniz Ceylan, Hatice Kubra Batu, Binnur Aydogan Temel","doi":"10.1002/pat.6540","DOIUrl":"https://doi.org/10.1002/pat.6540","url":null,"abstract":"This study investigates the reinforcement of pluronic (PF127) based temperature responsive hydrogels with photosensitive functionalities to create smart and injectable materials. For this purpose, 4‐[4‐[(4‐phenyl)azo]phenoxy] methacrylate (PAzPMA) was synthesized and further polymerized via reversible addition‐fragmentation chain transfer (RAFT) polymerization. The structures of the copolymers were characterized by several techniques such as Fourier‐transform infrared (FT‐IR), nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography (GPC). The azobenzene‐functionalized copolymer was combined with P127 solid polymer in micelle form and with P127 micelles in solid form to obtain PF127‐AzoMx and PF127‐AzoPx gels, respectively. When the temperature profiles of the PF127‐AzoMx and PF127‐AzoPx systems were compared with PF127, sol–gel phase transition were shifted to lower temperatures due to stronger hydrophobic interactions. Additionally, different concentrations of N,N,N‐trimethyl chitosan (f‐chitosan) were added to the gel systems and their rheological properties were investigated by exposing them to UV light. It has been observed that the presence and concentration of f‐chitosan are important for the variation of the interactions' strength between the micelles. The study highlights the potential of multifunctional hydrogels for specific biomedical applications that combine sensitivity to both thermal and optical stimuli for controlled drug delivery and tissue engineering purposes.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"62 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CeO2/SWCNT nanocomposite coating: A novel approach for corrosion application CeO2/SWCNT 纳米复合涂层：腐蚀应用的新方法

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-27 DOI: 10.1002/pat.6559

Fatih Doğan

{"title":"CeO2/SWCNT nanocomposite coating: A novel approach for corrosion application","authors":"Fatih Doğan","doi":"10.1002/pat.6559","DOIUrl":"https://doi.org/10.1002/pat.6559","url":null,"abstract":"The coatings were prepared by blending different concentrations of SWCNTs and CeO2 particles with an epoxy resin by hydrothermal method, which was then applied to the substrate through the doctor blade technique. The mixtures were transferred into a 1‐L capacity autoclave with a teflon‐lined flange type and subjected to hydrothermal treatment at 100°C for 3 h. The surface coatings were applied using a doctor blade. Subsequently, the coated materials were placed in an oven and dried for 12 h at 50°C under vacuum conditions. The samples' structural analysis was examined through x‐ray diffraction (XRD). XRD analysis verified the CeO2/SWCNT composite coating, and Fourier transform infrared spectroscopy (FTIR) was utilized to assess the presence of functional groups. Thermodynamic properties and thermal stability of composite coatings that were modified with SWCNTs and CeO2 particles were studied by thermogravimetric analysis (TGA). The impact of the CeO2/SWCNT composite on the anticorrosion capabilities of the epoxy coating was examined through electrochemical impedance spectroscopy (EIS), Nyquist curve, and Tafel slope characterization. Corrosion tests were conducted on the CeO2/SWCNT composite coatings in a 3.5 wt% sodium chloride (NaCl) solution at 25°C to improve corrosion resistance. The concentration of 0.4 wt% CeO2 was found to be optimal for achieving effective corrosion resistance. The composite coating CNT0.6‐C0.4 exhibited significantly higher Ecorr (−426 V) and lower Icorr (2.96 × 10−6 A cm−2) values compared to samples from the CNT0, CNT0.2, and CNT0.6 groups. The paper presents a viable solution with CeO2/SWCNT composite coating for the engineering application of corrosive‐inhibiting coatings.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"19 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving interactions at the electrochromic polymer‐transparent oxide electrode interface using alkyl phosphonic acid modifiers 使用烷基膦酸改性剂改善电致变色聚合物-透明氧化物电极界面的相互作用

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-26 DOI: 10.1002/pat.6551

Keith E. Johnson, D. Eric Shen, John R. Reynolds, Aubrey L Dyer

{"title":"Improving interactions at the electrochromic polymer‐transparent oxide electrode interface using alkyl phosphonic acid modifiers","authors":"Keith E. Johnson, D. Eric Shen, John R. Reynolds, Aubrey L Dyer","doi":"10.1002/pat.6551","DOIUrl":"https://doi.org/10.1002/pat.6551","url":null,"abstract":"As new synthetic methods for the preparation of solution processable electrochromic polymers are explored, including increasing synthetic scale beyond that of the research laboratory, it is expected that polymer intermolecular and intramolecular interactions will be affected. In this study, we explore the use of four different alkyl phosphonic acids of differing chain lengths as an interfacial treatment on ITO transparent electrodes to improve the polymer‐electrode interactions to mitigate the loss of film integrity and resulting electrochromic properties (current density, optical properties, and effective switch rates) during repeated oxidation/reduction and swelling/deswelling of the film. It was found that the phosphonic acid layer allows for a compatibilization of the polarity of the electrode surface with the polymer layer while also improving surface energy uniformity. We evaluated two electrochromic polymers (ECPs), and while a near complete delamination was observed on untreated ITO, film integrity was maintained beyond 25 repeated cycles, with polymer optical contrast maintained at all switching rates when coated onto dodecylphosphonic acid. Additionally, we show that electrochromic polymer film integrity is maintained over a range of film thicknesses. This method can be extended to applications using a variety of solution processable electroactive polymers in contact with metal oxide surfaces.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"16 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Jet slipping mechanism and fabricating of composite fiber by multiple field coupling 多场耦合的喷射滑移机理和复合纤维制造

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-26 DOI: 10.1002/pat.6558

Da Hong, Xinyu Huang, Zhiming Zhang, Qiaoling Ji, Zhen Chen, Qiao Xu

{"title":"Jet slipping mechanism and fabricating of composite fiber by multiple field coupling","authors":"Da Hong, Xinyu Huang, Zhiming Zhang, Qiaoling Ji, Zhen Chen, Qiao Xu","doi":"10.1002/pat.6558","DOIUrl":"https://doi.org/10.1002/pat.6558","url":null,"abstract":"The rotary jet spinning process involves the joint action of centrifugal force, gravity, temperature, humidity, and flow fields on the spinning solution. The solution is ejected through the nozzle after flowing from the storage container and stretched in the air to form a composite fiber. At present, the investigation of rotary jet composite spinning primarily focused on the dynamics and kinematics of the spinning solution and jet within the container. However, there is still a lack of comprehensive exploration into the motion and slip phenomena exhibited by the composite spinning solution in air. This article investigates the slip phenomenon between the polymer and the gas contact surface after the spinning solution leaves the spinneret aperture. A slip model is established to analyze the motion and force of the polymer in air. Meanwhile, a mathematical model for the evaporation rate of composite spinning solution motion under the influence of multi‐field coupling is established through theoretical analysis. A numerical simulation of the rotary jet spinning process was conducted to obtain clouds of jet exit velocity. The morphology of composite fibers produced by rotary jet spinning was analyzed using scanning electron microscopy, enabling a comparison of diameter distribution and surface quality under different environmental and equipment parameters. This study provides a certain reference for the preparation of high‐quality composite fibers.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"62 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile fabrication of polyurethane/poly(methyl methacrylate) semi‐interpenetrating polymer networks for enhanced mechanical and thermal properties 轻松制造聚氨酯/聚（甲基丙烯酸甲酯）半互穿聚合物网络，提高机械和热性能

IF 3.4 4区工程技术

Polymers for Advanced Technologies Pub Date : 2024-08-22 DOI: 10.1002/pat.6556

Pragya Tiwari, Shakshi Bhardwaj, Shiva Singh, Pradip K. Maji

{"title":"Facile fabrication of polyurethane/poly(methyl methacrylate) semi‐interpenetrating polymer networks for enhanced mechanical and thermal properties","authors":"Pragya Tiwari, Shakshi Bhardwaj, Shiva Singh, Pradip K. Maji","doi":"10.1002/pat.6556","DOIUrl":"https://doi.org/10.1002/pat.6556","url":null,"abstract":"The primary objective of this research is to fabricate semi‐interpenetrating polymer networks (semi‐IPNs) via in‐situ polymerization of methyl methacrylate (MMA) within a polyurethane (PU) framework. To produce polymethyl methacrylate (PMMA) from MMA in the PU matrix, solution polymerization was utilized in the following weight ratios: 30/70, 50/50, 70/30, and 90/10. The effective formation of semi‐IPNs of PU/PMMA was confirmed by several techniques. Fourier transform infrared (FTIR) proves that no new chemical bonds formed between the semi‐IPNs, and only physical interactions were present, and X‐ray diffraction (XRD) techniques tell about the amorphous nature of these semi‐IPNs. The field emission scanning electron microscope (FESEM) and atomic force microscope (AFM) were utilized to examine the morphology of PU/PMMA semi‐IPNs. In contrast to alternative semi‐IPNs, 70/30 and 90/10 PU/PMMA exhibit a uniform morphology devoid of phase separation. Furthermore, the significant thermal stability and transitions of these semi‐IPNs were assessed using a thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Additionally, the mechanical analysis indicates that among the different percentages of PU/PMMA, 70/30 PU/PMMA exhibits the highest tensile strength of approximately 50.5 MPa. The observed enhancement in mechanical strength can be attributed to interpenetrating networks (IPNs) formed between the constituents. The synthesized PU/PMMA semi‐IPNs have potential in various fields, including medical devices, automotive components, sports, and other advanced applications.","PeriodicalId":20382,"journal":{"name":"Polymers for Advanced Technologies","volume":"18 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0