Iranian Polymer Journal最新文献_第10页

Advancements in natural membrane-based electrochemical biosensors for detecting endocrine-disrupting chemicals in food and environmental monitoring 基于天然膜的电化学生物传感器在食品和环境监测中检测内分泌干扰物的进展

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-04-05 DOI: 10.1007/s13726-025-01484-0

Anwarul Hidayah Zulkifli, Sharina Abu Hanifah, Yook Heng Lee, Zalifah Mohd Kasim, Ikeda Masato, Riyadh Abdulmalek Hassan, Alizar Ulianas

{"title":"Advancements in natural membrane-based electrochemical biosensors for detecting endocrine-disrupting chemicals in food and environmental monitoring","authors":"Anwarul Hidayah Zulkifli, Sharina Abu Hanifah, Yook Heng Lee, Zalifah Mohd Kasim, Ikeda Masato, Riyadh Abdulmalek Hassan, Alizar Ulianas","doi":"10.1007/s13726-025-01484-0","DOIUrl":"10.1007/s13726-025-01484-0","url":null,"abstract":"<div><p>Selection and synthesis of a suitable electrochemical biosensor membrane can be very challenging due to competitive properties and performance of developed membranes, such as leaching of immobilized transducers and biorecognition elements, conductivity performance, hydrophilicity, durability of sensor membrane to be suitable for a longer period, and limit of detection of endocrine-disrupting chemicals (EDCs). The primary objective of this study is to review the trend in the usage of food and natural resources as the alternative to synthetic membrane in enhancing electrochemical biosensor in detection of food pollutants in the application of food and water monitoring. A comprehensive review of scientific articles published between 2010 and 2024 on both synthetic and natural membrane additives was performed for electrochemical sensing of endocrine-disrupting chemicals in food and environmental monitoring. Based on the review conducted, it is proven that the application of synthetic membrane is more popular compared to natural membrane by 46% in 2023 and increasing by 60% in June 2024. The steep slope of increasing usage of synthetic membrane additives is incredibly significant; however, the usage of natural membrane and their additives is still lagging as there is a trend of only 6–30% increment yearly from 2010 to 2022 and an inclination to 60% that occurred from 2022 to 2023. Natural membrane additives isolated from food and natural resources in the electrochemical biosensor are vital in detecting EDCs in fresh and processed food and environment in situ, more robust, sensitive, and selective to abide to the international food safety laws.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 12","pages":"2195 - 2218"},"PeriodicalIF":2.8,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442825","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

Enhancement of piezoelectric performance and mechanical strength by designing esterified lignin-based polyacrylonitrile membrane for piezoelectric sensor 设计酯化木质素基聚丙烯腈压电传感器膜以提高压电性能和机械强度

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-31 DOI: 10.1007/s13726-025-01483-1

Shuhua Chen, Shufeng Wang, Lichun Yue, Xiuping Li

{"title":"Enhancement of piezoelectric performance and mechanical strength by designing esterified lignin-based polyacrylonitrile membrane for piezoelectric sensor","authors":"Shuhua Chen, Shufeng Wang, Lichun Yue, Xiuping Li","doi":"10.1007/s13726-025-01483-1","DOIUrl":"10.1007/s13726-025-01483-1","url":null,"abstract":"<div><p>Improving the piezoelectric and mechanical properties of polymer piezoelectric materials is an urgent research work for their application as piezoelectric materials. Thus, in this work, a new polymer piezoelectric material, esterified lignin-modified polyacrylonitrile (PAN/CEHL-PTMG), is successfully synthesized and the related piezoelectric composite nanofiber membrane is prepared by electrospinning. The structure of the membranes is well characterized by Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), field emission scanning electron microscopy (SEM). The output voltage can reach as high as 1.47 V (64.63% higher than that of the pure polyacrylonitrile membrane) by optimizing the spinning solution (2% esterified lignin). The results indicated that the piezoelectric property of polyacrylonitrile (PAN) is remarkably improved by the incorporation of esterified lignin (CEHL-PTMG). In addition, a simple energy-conversion performance test is conducted, through which the prepared piezoelectric elements with PAN/CEHL-PTMG show the mechanical movement of the arm and finger. It is verified that the PAN/CEHL-PTMG piezoelectric element can complete the energy conversion well in practical application. The results indicated that an appropriate amount of CEHL-PTMG was conducive to the transformation of the planar sawtooth conformation in the microstructure of the polyacrylonitrile nanofibers. Meanwhile, mechanical tests exhibited that the CEHL-PTMG also could effectively enhance the tensile strength and elongation of the membranes.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1953 - 1965"},"PeriodicalIF":2.8,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296434","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

Mode-II interlaminar fracture toughness characterization of woven carbon–Kevlar interyarn hybrid textile composites 机织碳-凯夫拉纱间混杂纺织复合材料的ii型层间断裂韧性表征

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-30 DOI: 10.1007/s13726-025-01485-z

Pawan Sharma, Harlal Singh Mali, Anurag Dixit

{"title":"Mode-II interlaminar fracture toughness characterization of woven carbon–Kevlar interyarn hybrid textile composites","authors":"Pawan Sharma, Harlal Singh Mali, Anurag Dixit","doi":"10.1007/s13726-025-01485-z","DOIUrl":"10.1007/s13726-025-01485-z","url":null,"abstract":"<div><p>High-performance textile reinforced composites are widely used in military, defense, aerospace, marine, automobile, and sports industries. These composites offer good in-plane properties but are prone to delaminate in the thickness direction. Thus, the interlaminar fracture or delamination needs to be characterized due to major design concerns. Under the influence of external loading, micro-level cracks can initiate or propagate in the structure and are capable of deforming it. This research intends to investigate the Mode-II interlaminar fracture toughness of plain and twill woven carbon, Kevlar monolithic, and their interyarn hybrid textile composite laminates by placing both yarns separately in the length direction. Eight different laminate configurations are fabricated using the vacuum assisted resin transfer molding (VARTM) technique. Mode-II interlaminar fracture toughness characterization is performed on the Instron 8862 system in non-precrack (NPC) and precrack (PC) configurations using an end notched flexure (ENF) specimen. The fracture toughness is calculated using the compliance calibration (CC) data reduction method. Results reveal that plain woven composites show higher fracture toughness than twill woven composites, PC fracture toughness is higher than NPC fracture toughness, and in the hybrid laminate configurations, plain woven carbon–Kevlar hybrid composite laminate shows the highest fracture toughness when carbon yarn is placed in the length direction.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 12","pages":"1981 - 2001"},"PeriodicalIF":2.8,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442826","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 characterization of 3D printed polyolefin elastomer-carbon black composites: cyclic mechanical behavior, thermophysical properties, and morphological analysis 3D打印聚烯烃弹性体-炭黑复合材料的高级表征：循环力学行为，热物理性能和形态分析

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-28 DOI: 10.1007/s13726-025-01469-z

Wei Liu, Tiancheng Ji, Yuanchao Hu, Shijun Huang, Tao Huang, Zhiwei Liu, Xintong Mao

{"title":"Advanced characterization of 3D printed polyolefin elastomer-carbon black composites: cyclic mechanical behavior, thermophysical properties, and morphological analysis","authors":"Wei Liu, Tiancheng Ji, Yuanchao Hu, Shijun Huang, Tao Huang, Zhiwei Liu, Xintong Mao","doi":"10.1007/s13726-025-01469-z","DOIUrl":"10.1007/s13726-025-01469-z","url":null,"abstract":"<div><p>This study follows the effects of carbon black (CB) fillers with respect to the mechanical and thermal properties of polyolefin elastomer (POE) composites. Cyclic mechanical testing was conducted, highlighting the Mullins effect, which demonstrates a reduction in stiffness and stress upon subsequent loading cycles. Optimal mechanical performance was observed at 4% (by weight) CB, showing superior tensile strength and elongation. Thermal characterization by thermogravimetric analysis (TGA) revealed that the incorporation of CB significantly enhances the thermal stability of the POE matrix. The initial decomposition phase of pure POE ends at 323 °C, whereas the addition of 4% (by weight) CB shifts this to 352 °C. This shift is attributed to improved entanglement and restricted mobility of polymer chains due to CB fillers. Furthermore, the main decomposition phase showed a peak temperature increase from 463 to 476 °C with the addition of CB. Differential scanning calorimetry (DSC) analysis demonstrated that CB fillers affect the thermal transitions of POE, reducing the glass transition temperature (T<sub>g</sub>) from − 50.50 to − 51.25 °C, decreasing the crystallization temperature (T<sub>c</sub>) by 12 °C resulting in a 19% reduction crystallinity rate, and lowering the melting temperature (T<sub>m</sub>) by 8.6 °C. Scanning electron microscopy (SEM) analysis confirmed a uniform dispersion of CB particles within the matrix and strong interfacial bonding, which mitigates common 3D-printing defects and enhances overall material durability. These findings underscore the potential of CB-reinforced POE composites for applications requiring enhanced mechanical and thermal properties.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1815 - 1828"},"PeriodicalIF":2.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296396","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

Investigating the influence of hexafluorobutyl methacrylate on the properties of core–shell polyacrylate latex pressure sensitive adhesives and films 研究了甲基丙烯酸六氟丁酯对核壳聚丙烯酸胶乳压敏胶粘剂和薄膜性能的影响

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-28 DOI: 10.1007/s13726-025-01482-2

Chaobo Wu, Cheng Fang

{"title":"Investigating the influence of hexafluorobutyl methacrylate on the properties of core–shell polyacrylate latex pressure sensitive adhesives and films","authors":"Chaobo Wu, Cheng Fang","doi":"10.1007/s13726-025-01482-2","DOIUrl":"10.1007/s13726-025-01482-2","url":null,"abstract":"<div><p>The increasing global focus on sustainability and environmental protection has driven significant developments in research on waterborne pressure-sensitive adhesives (PSAs). Among these, hexafluorobutyl methacrylate (HFMA)-modified core–shell polyacrylates show great potential as waterborne PSAs but are hindered by limited understanding of HFMA's effect on PSA properties. To address this challenge, we successfully synthesized a series of core–shell polyacrylate latex PSAs using (meth)acrylates as the primary monomer and HFMA as the modifying monomer, employing a monomer-starved seeded semi-continuous emulsion polymerization process. Comprehensive characterizations, including FTIR, XPS, DSC and TEM, confirmed the successful incorporation of HFMA into the latex copolymer and the formation of core–shell structures. Notably, increasing the HFMA content from 0 to 20 wt% significantly reduced the water absorption rate of the latex films from 15 to 4 wt% and decreased the surface tension from 42 to 34 mN/m. Concurrently, the water contact angle and water whitening resistance were greatly enhanced. Additionally, the loop tack and peel strength of the modified PSAs were improved by 81 and 89%, respectively. Furthermore, all PSA samples demonstrated high shear strength (> 72 h) and gel content (> 69 wt%), achieving a remarkable balance between cohesion and adhesion. This work offered a novel approach for designing waterborne PSAs with excellent water whitening resistance and high cohesion, broadening the possibilities for sustainable adhesive applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1917 - 1928"},"PeriodicalIF":2.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13726-025-01482-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296397","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

Studying the effect of bimodality on the linear viscoelastic properties of LLDPE/UHMWPE blends and determining their MWD from rheology 研究了双峰态对LLDPE/UHMWPE共混物线性粘弹性性能的影响，并从流变学角度确定了它们的MWD

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-25 DOI: 10.1007/s13726-025-01464-4

Amir Hosseinzadeh, Nadereh Golshan Ebrahimi, Tahereh Asadollahi

{"title":"Studying the effect of bimodality on the linear viscoelastic properties of LLDPE/UHMWPE blends and determining their MWD from rheology","authors":"Amir Hosseinzadeh, Nadereh Golshan Ebrahimi, Tahereh Asadollahi","doi":"10.1007/s13726-025-01464-4","DOIUrl":"10.1007/s13726-025-01464-4","url":null,"abstract":"<div><p>Linear low-density polyethylene (LLDPE) and ultra-high-molecular-weight polyethylene (UHMWPE) samples were blended in weight ratios of 98:2 and 95:5 using an internal mixer. The molecular weight and distribution of pure LLDPE were determined by gel permeation chromatography (GPC). The viscoelastic properties of the blends were measured using an oscillatory shear rheometer. Cole–Cole and Han plots indicated miscibility in LLDPE blended with 2% (by wt) UHMWPE and immiscibility with 5% (by wt). The blend behavior was characterized using the Maxwell model, and agreement between Maxwell plots and shear rheometry confirmed the model’s suitability for describing the blend behavior. The effects of increasing UHMWPE content on elasticity, modulus, and intercept frequency were evaluated. By applying rheological data and the Maxwell model in the generalized mixing rule, we determined the molecular weight distributions of the blends. To validate the distributions derived from linear viscoelasticity measurements, the molecular weight distribution of pure LLDPE from GPC was compared with that obtained from rheometry. The experimental results indicated that adding UHMWPE to LLDPE results in a bimodal molecular weight distribution (MWD) in the blend. In addition, the peaks ratio was found to be influenced by the viscoelastic behavior of the blends.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1793 - 1802"},"PeriodicalIF":2.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296535","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

Enhancing food safety and extending shelf life with cost-effective cypress essential oil for packaging films 用具有成本效益的柏树精油包装薄膜，提高食品安全和延长保质期

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-25 DOI: 10.1007/s13726-025-01460-8

Abderrahim Bouftou, Kaoutar Aghmih, Fatima Lakhdar, Said Gmouh, Sanaa Majid

{"title":"Enhancing food safety and extending shelf life with cost-effective cypress essential oil for packaging films","authors":"Abderrahim Bouftou, Kaoutar Aghmih, Fatima Lakhdar, Said Gmouh, Sanaa Majid","doi":"10.1007/s13726-025-01460-8","DOIUrl":"10.1007/s13726-025-01460-8","url":null,"abstract":"<div><p>Bio-active packaging films from cellulose acetate incorporated with cypress essential oil (Cyp) have been developed. Thus, cellulose acetate (CA), which is a biodegradable and renewable polymer has been used as an alternative to petroleum-based polymers. Cellulose acetate films were prepared via a solvent casting method incorporating 0, 10, 30, and 60% (w/w) of Cyp. The purpose was to evaluate the possible changes caused by the Cyp on the properties of the packaging films. Different methods and technics have been used to characterize these films. The antibacterial and antioxidant properties of the films were also analyzed. FTIR and XRD analysis indicated that Cyp was homogenously distributed in the films. Meanwhile, TGA analysis demonstrated that the addition of Cyp had an impact on thermal-oxidative properties of the films. The CA/Cyp films showed excellent biodegradability in soil after 60 days, with a percentage loss of 87.07% by mass, and improved mechanical properties with tensile strength and elongation-at-break of 8.1 ± 0.2 MPa and 16.6 ± 0.2%, respectively. Water absorption and water solubility values for CA/Cyp films ranged from 76.62 ± 0.91% to 21.95 ± 0.57% and from 1.29 ± 0.35 to undetectable levels, respectively. The results displayed that antibacterial activity against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> increased as the percentage of Cyp increased in the cellulose acetate films. Moreover, the free radical scavenging activity of cellulose acetate films was improved by increasing the Cyp concentration. These results indicate that cellulose acetate films containing a low-cost essential oil like Cyp have potential for use as active packaging for foods.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1779 - 1791"},"PeriodicalIF":2.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296533","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

Carbon/epoxy composites reinforced with carbon nanotubes and hollow glass microspheres: mechanical characterization 碳纳米管和中空玻璃微球增强碳/环氧复合材料：力学特性

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-25 DOI: 10.1007/s13726-025-01480-4

K. Tejasvi, V. J. Jayashree, Vignesh Devaraj, P. Sundar Singh

{"title":"Carbon/epoxy composites reinforced with carbon nanotubes and hollow glass microspheres: mechanical characterization","authors":"K. Tejasvi, V. J. Jayashree, Vignesh Devaraj, P. Sundar Singh","doi":"10.1007/s13726-025-01480-4","DOIUrl":"10.1007/s13726-025-01480-4","url":null,"abstract":"<div><p>The design of combining carbon/epoxy (CE) reinforcement, multi-walled carbon nanotubes (MWCNTs), and hollow glass microspheres (HGMs) can meet the need for future state-of-the-art materials required in various strata such as aerospace and automotive applications. The effects of HGM content on density, mechanical characteristics, and morphology were explored, and properties were compared with baseline laminate. Unidirectional laminates of carbon epoxy/multi-walled carbon nanotubes/hollow glass microspheres with variable weight percentages using the filament winding technique were fabricated and cured. The amount of MWCNT was held constant (0.1%), while the percentage of HGM was varied from 0.2 to 1% and laminates were prepared. Tensile strength and modulus were found to be decreasing with increase in HGM content at constant MWCNT whereas flexural and short beam shear properties obtained from these tests, respectively, were higher compared to those of the baseline. However, samples with 0.6 weight percent HGM loading with constant MWCNT demonstrated the maximum improvement by 8% in flexural strength and 12% in short beam shear. The fracture surfaces of CE/MWCNT/HGM composite samples were analyzed using scanning electron microscopy technique. The SEM image of the composite shows greater dispersion of MWCNTs in the carbon epoxy matrix, with some agglomerates observed. The increase in HGM content in the formulations resulted in a reduction in density while only slight reduction in mechanical properties, demonstrating that this new scenario may be enforced to replace the CE laminate properties, offering a reasonable weight rebate for these materials.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1803 - 1813"},"PeriodicalIF":2.8,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296536","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

Improved thermal and morphological properties of polybenzoxazine and epoxy nanocomposites with aminosilane-treated date palm fiber reinforcement 氨基硅烷处理的椰枣纤维增强聚苯并恶嗪和环氧纳米复合材料的热性能和形貌性能

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-24 DOI: 10.1007/s13726-025-01471-5

Mahmoud A. Abdelkawy, Shinichi Itsuno, Mahmoud A. El-Badawi, El-Saied A. Aly

{"title":"Improved thermal and morphological properties of polybenzoxazine and epoxy nanocomposites with aminosilane-treated date palm fiber reinforcement","authors":"Mahmoud A. Abdelkawy, Shinichi Itsuno, Mahmoud A. El-Badawi, El-Saied A. Aly","doi":"10.1007/s13726-025-01471-5","DOIUrl":"10.1007/s13726-025-01471-5","url":null,"abstract":"<div><p>Date palm fibers (DPFs) have been effectively utilized as reinforcements in polymer matrices to enhance their properties. In this study, DPFs and nanoclays were treated with an amino functional silane coupling agent to enhance their compatibility with polybenzoxazine (PBz) and epoxy resin (EP) thermosets. The inherent instability in thermal properties of PBz and EP thermosets, attributed to high brittleness, led to the development of DPF-reinforced polybenzoxazine and epoxy composites. The impact of DPFs loading on thermal properties was investigated, revealing significant enhancements in thermal properties and char yields with varying organoclay loadings, indicating the effectiveness of the latter in the nanocomposites. Furthermore, the treated composites exhibited improved interfacial adhesion, as evidenced by SEM analysis of the surface hybrid, showcasing excellent interfacial bonding. This study not only explored the potential of utilizing abundant agricultural waste, specifically DPFs, for environmental sustainability and sustainable development but also delved into the enhancement of thermal stability through the incorporation of organosilane-treated DPFs and organoclay nanofillers in EP and PBz matrices. Characterization techniques such as FTIR and SEM confirmed the successful enhancement of DPFs’ hydrophobicity and surface roughness post-treatment, contributing to improved fiber-matrix adhesion. These results underscore the importance of the interfacial adhesion and aminosilane treatment for achieving desired properties in natural fiber-reinforced composites, paving the way for more environmentally friendly composite materials.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1893 - 1902"},"PeriodicalIF":2.8,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296850","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

P–O codoped g-C3N4/poly(aniline) as heterogeneous photocatalyst for PET-RAFT polymerization P-O共掺杂g-C3N4/聚苯胺作为PET-RAFT聚合的非均相光催化剂

IF 2.8 3区化学

Iranian Polymer Journal Pub Date : 2025-03-23 DOI: 10.1007/s13726-025-01479-x

Lutao Peng, Yi Liu, Qiusheng Liu, Lelin Zeng, Guoxiang Wang

{"title":"P–O codoped g-C3N4/poly(aniline) as heterogeneous photocatalyst for PET-RAFT polymerization","authors":"Lutao Peng, Yi Liu, Qiusheng Liu, Lelin Zeng, Guoxiang Wang","doi":"10.1007/s13726-025-01479-x","DOIUrl":"10.1007/s13726-025-01479-x","url":null,"abstract":"<div><p>Photo-induced living radical polymerization offers several advantages, including a broad range of polymerizable monomers, high design flexibility of polymer structures, cost-effective and readily accessible catalysts, mild and controllable polymerization conditions, and high polymerization efficiency. In this work, P–O codoped g-C<sub>3</sub>N<sub>4</sub>/poly(aniline) composite was prepared as an efficient heterogeneous photocatalyst. Then, the photoinduced electron transfer reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of methyl methacrylate was investigated at 25 °C in <i>N</i>,<i>N</i>-dimethylformamide, utilizing 4-cyanopentanoic acid dithiobenzoate (CPADB) as chain transfer agent and photocatalyst of P–O codoped g-C<sub>3</sub>N<sub>4</sub>/PANI composite. Poly(methyl methacrylate)s (PMMAs) were synthesized using the PET-RAFT polymerizations with controlled molecular weight (<i>M</i><sub>n,exp</sub>) and narrow molecular weight distribution (<i>M</i><sub>w</sub>/<i>M</i><sub>n</sub>). Kinetic analyses revealed that the polymerization adhered to first-order kinetic. The effects of the amount of photocatalyst and concentrations of CPADB and monomer were investigated on the polymerization. It was observed that the induction period decreased with increasing the amount of photocatalyst. A periodic light-on/off protocol was employed to investigate the polymerization’s dependency on light, revealing that the activation and deactivation steps were regulated by light exposure. PMMAs synthesized via the PET-RAFT polymerization system can be further treated with monomers to achieve chain extension, thereby forming block copolymers.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"34 11","pages":"1929 - 1938"},"PeriodicalIF":2.8,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145296837","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}

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