Journal of Polymer Research最新文献

{"title":"Ginkgo biloba leaf extract: A natural and eco-friendly stabilizer for enhancing the thermal and oxidative stability of polyethylene","authors":"Jinpeng Song,&nbsp;Xiangyao Li,&nbsp;Shijie Zhang,&nbsp;Yan Li,&nbsp;Long Chen,&nbsp;Zhongwei Wang,&nbsp;Guiqing Cheng,&nbsp;Qing Yu,&nbsp;Yuxi Han","doi":"10.1007/s10965-024-04191-1","DOIUrl":"10.1007/s10965-024-04191-1","url":null,"abstract":"<div><p>To improve the antioxidant capacity of polyethylene (PE), ginkgo biloba leaf extract (GBLE) was introduced into the PE matrix as a natural stabilizer for the first time. The effect of GBLE on the thermal oxidation stability, thermal stability, processing stability, mechanical properties, and long-term aging resistance of PE during multiple extrusion processing was investigated. The oxidation induction time (OIT) results showed that the addition of GBLE improved the thermal oxidation stability and long-term aging resistance of the PE matrix even after multiple extrusions. Additionally, thermogravimetric analysis revealed that GBLE significantly enhanced the thermal stability of the polymer matrix. These improvements could be attributed to the potent free radical scavenging efficiency of GBLE. OIT tests also confirmed GBLE’s resistance to extraction from the PE matrix, as well as its antioxidant activity after extraction. Moreover, the introduction of GBLE effectively enhanced the processing stability of the PE matrix, with the melt flow rate of PE-GBLE_2.0 decreasing by only about 0.17 g/10 min from the first extrusion to the fifth extrusion. Furthermore, the addition of GBLE could still maintain the good mechanical performance of the matrix after multiple extrusions. All results demonstrated that GBLE is an effective and natural multifunctional stabilizer for PE.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of mechanical properties of terminalia arjuna and moringa oleifera fiber reinforced epoxy composite","authors":"Mahesh G,&nbsp;Kamalakannan R,&nbsp;Vijayan V,&nbsp;Chellamuthu K","doi":"10.1007/s10965-024-04190-2","DOIUrl":"10.1007/s10965-024-04190-2","url":null,"abstract":"<div><p>Various sectors are utilizing composites reinforced with natural fibers (NF). Composite materials with an epoxy matrix have been mould with hand layup process using woven fibers from the Terminalia Arjuna fiber and Moringa Oleifera fruit fibers. The composite panels were manufactured using a variable number of layers, ranging from 7 to 13, depending on the fabric's weight. An assessment has been conducted on the tensile, bending, impact, compression, short beam shear strength, fracture toughness, and water-absorption (WA). The composites that were created were examined utilizing SEM analysis to examine the fractured morphology and assess the strength of the interface. The investigation revealed that augmenting the quantity of fiber layers enhanced the physical and mechanical properties of the composites. The tensile strength of the composites increased by 25% to 62.35 MPa with 11 layers, while water absorption was found to be 18.4% after 10 days. Therefore, these findings suggest that the fabricated composites are well-suited for applications in structural components and automotive body parts requiring moderate load-bearing capacity.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and characterization of fluorescent cellulose succinate hydrogels for efficient chromium adsorption","authors":"Hebat-Allah S. Tohamy,&nbsp;Mohamed El-Sakhawy,&nbsp;Beata Strachota,&nbsp;Silvia Mares Barbosa,&nbsp;Adam Strachota,&nbsp;Samir Kamel","doi":"10.1007/s10965-024-04164-4","DOIUrl":"10.1007/s10965-024-04164-4","url":null,"abstract":"<div><p>This study focuses on developing and characterizing of fluorescent cellulose-based hydrogelsfor efficient chromium (Cr(VI)) adsorption. For this purpose, microcrystalline cellulose (MCC) was first surface-modified to achieve solubility using succinic anhydride. Cellulose succinate (CS) subsequently was grafted with a mixture of acrylic acid (AA) and acrylamide (AM), while <i>N</i>,<i>N′</i>-methylene-bis(acrylamide) (MBA) was added as crosslinker to obtain the final grafted and crosslinked hydrogels. To impart fluorescence and sensing capabilities, nitrogen-doped carbon quantum dots (N-CQDs) were synthesized via a microwave-assisted method using sugarcane bagasse, NaOH, and urea as precursors, and incorporated into the hydrogel. The resulting hydrogels demonstrated effective Cr(VI) adsorption, with optimal performance observed at 10% N–CQD loading. FTIR, SEM, rheological analysis, and TGA were employed for hydrogel characterization, while adsorption kinetics provided insights into the interaction mechanisms with Cr(VI).</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-factor coupled aging and recycling of meta-aramid filter bags","authors":"Feng Dai,&nbsp;Jingxian Liu","doi":"10.1007/s10965-024-04144-8","DOIUrl":"10.1007/s10965-024-04144-8","url":null,"abstract":"<div><p>The meta-aramid (PMIA) filter bag is one of the most common filter materials used in high-temperature exhaust filtration. However, the current understanding of the recycling of this material, and the durability and stability in multi-factor coupling environments is limited. In this work, the aging characteristics of PMIA filter bags under multi-factorial coupling were investigated, and the effect of the aging degree on the recycling. Firstly, the performance of the filter bags before and after aging was characterized by FT-IR, mechanical properties, SEM, and EDS analysis. The results show that the mechanical properties and thermal stability of the PMIA filter bag rapidly deteriorated under multi-factor coupling. Moreover, The PMIA can be completely dissolved in a LiCl-DMAc mixed solution. Therefore, LiCl-DMAc mixed solution can be used to dissolve used needle felt and prepare it into a thin film. The light transmission deteriorates of the recycled films made from aged needle felt, while still maintaining good tensile strength (σt) &gt;55 MPa with Young’s modulus (E) &gt;2 GPa. The effect of the aging degree of filter bags on the performance of recycled films was systematically investigated. The whole process does not cause environmental pollution. This study provides useful information for the degradation and recycling of PMIA.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of polylactic acid polymer composites strengthened with chopped vetiver fiber and pearl millet-derived- nano silica towards environmental sustainability","authors":"A. Ashothaman,&nbsp;J. Sudha,&nbsp;N. Senthilkumar,&nbsp;K. Palanikumar","doi":"10.1007/s10965-024-04184-0","DOIUrl":"10.1007/s10965-024-04184-0","url":null,"abstract":"<div><p>In search of lightweight materials, polymer (biodegradable) composites are considered across the globe in engineering applications that suit their requirements towards environmental sustainability. In this study, the biodegradable polylactic acid (PLA) based polymer composite is fabricated by reinforcing chopped vetiver fibers (VFs) of varying proportions of weight (5, 10, 15, 20 and 25 wt.%) along with 2 wt.% addition of nano-silica (nSiO₂) derived from pearl millet using injection moulding. The fabricated PLA + VF composite is characterized by its mechanical, wear and thermal behaviour as per ASTM guidelines. Micrographs show an even distribution of nSiO₂ and chopped VFs in the PLA matrix which can impact the properties of composite. Results show that, with the inclusion of VFs in the PLA matrix the density and porosity increase proportionally. Similarly tensile, impact and flexural strength increases until 20 wt.% addition, afterwards a decreasing trend is observed due to poor interfacial bonding of fibers with the matrix. Water absorption nature decreases with the inclusion of nSiO₂, but increases with the inclusion of VFs. The heat deflection temperature of PLA + nSiO₂ + VF increases whereas the coefficient of linear thermal expansion decreases with the inclusion of VFs till 20 wt.%. Wear resistance gets improved due to the incorporation of nSiO₂ and VFs which possess certain self-lubricating properties. Thermal gravimetry analysis (TGA) and differential scanning calorimetry (DSC) assessments exposed that, the addition of VF (20 wt.%) and nSiO₂ increases the heat-withstanding capability as the matrix softening occurs in the 57°C-80.7°C range, with a heating value of 99.4°C, the residual mass obtained is 99.6%.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of the curing rate and mechanical properties of epoxy resin on polymer matrix composites","authors":"Mengyu Liang,&nbsp;Xing Liu,&nbsp;Di Liu,&nbsp;Xiaopeng Li,&nbsp;Xianjin Hu,&nbsp;Chenyang Feng,&nbsp;Ting-Ting Li,&nbsp;Jia-Horng Lin,&nbsp;Boyan Chang,&nbsp;Jie Chen","doi":"10.1007/s10965-024-04186-y","DOIUrl":"10.1007/s10965-024-04186-y","url":null,"abstract":"<div><p>The curing rate of epoxy resins is a critical parameter that significantly influences the curing properties of polymer matrix composites (PMCs). It plays a vital role in meeting high-performance requirements, particularly in achieving rapid development of high modulus. The paper reviews the current state of research on the curing of epoxy resins in PMCs, including theoretical studies on the curing kinetics of the curing rate. The effects of curing methods, curing agents, accelerators, functional fillers and composite curing processes on the curing rate and mechanical properties are also reviewed. In addition, the relationship between curing rate and mechanical properties of epoxy composites under different influencing factors is reviewed. The review aims to provide research ideas for obtaining advanced structural composites with fast curing and excellent mechanical properties.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoparticles formation through photopolymerization of pyrrole with lecithin for enhanced mitochondrial activation via NIR-photothermal mild-hyperthermia","authors":"Chih-Kuang Chen,&nbsp;Andrew E.-Y. Chuang","doi":"10.1007/s10965-024-04174-2","DOIUrl":"10.1007/s10965-024-04174-2","url":null,"abstract":"<div><p>The development of biocompatible nanoparticles (NPs) with effective photothermal properties is essential for advancing biomedical applications. This study investigates the synthesis and characterization of lecithin-polypyrrole nanoparticles (LEC-PPy NPs) formed through near-infrared (NIR) irradiation. LEC-PPy NPs were prepared by mixing lecithin with varying concentrations of pyrrole monomer, followed by NIR irradiation to induce potential polymerization. Characterization techniques, including Dynamic Light Scattering (DLS), Zeta Potential Analysis, FTIR, XRD, and TEM, were employed. The prepared NPs demonstrated a photothermal response, reaching temperatures above around 43 °C under NIR exposure while exhibiting cell viability and minimal hemolysis. The biochemical tests of the cellular membrane potential and AHR further validate their biological response. This study highlights the implication of NIR-induced polymerization in producing biocompatible LEC-PPy NPs, which show potential for various biomedical applications. Further optimization and in vivo validation are necessary to realize their clinical potential.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linear dependence of iodine value on the mass fraction of vegetable oils: a new way to overcome seasonal challenges for renewable polymer manufacturing","authors":"Fernanda Barreto dos Santos,&nbsp;Caroline Gaglieri,&nbsp;Gabriel Iago dos Santos,&nbsp;Rafael Turra Alarcon,&nbsp;Gilbert Bannach","doi":"10.1007/s10965-024-04175-1","DOIUrl":"10.1007/s10965-024-04175-1","url":null,"abstract":"<div><p>Polymers derived from non-renewable sources are prevalent today. The demand for environmentally sustainable alternatives, such as vegetable oils, is consequently increasing. However, the large-scale utilization of vegetable oil in the polymers production is hindered by seasonality and regional availability. To address these challenges, this study demonstrates the feasibility of creating vegetable oil blends with precise iodine values (IVs), a critical parameter for polymerization. These blends exhibit a linear relationship between IV (determined by both titration and ¹H-NMR methods) and mass fraction. By combining vegetable oils with varying IVs, blends can be used to achieve the desired unsaturation level providing a continuous supply of raw materials for the polymer industry. Thus, to validate this approach, a polymer was synthesized using a blend of Brazil nut and linseed vegetable oils, resulting in an IV equal to 123.5 g of I₂ per 100 g of sample. This polymer exhibited comparable properties, including thermal stability (265 °C) and glass transition temperature (-14.7 °C), to a polymer made from pure grape seed oil with an IV of 123.0 g of I₂ per 100 g. These findings confirm that the desired IV can be achieved through simple blending based on a linear relationship between IV and mass fraction. Therefore, this approach enables the production of polymers with properties similar to those obtained using a single vegetable oil, thereby expanding the potential for sustainable polymer manufacturing.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cellulose nanocrystals from tucum fibers cultivated in Amazon Forest: extraction and characterization","authors":"José Carlos Vasques,&nbsp;Samir Leite Mathias,&nbsp;Lucas Repecka Alves,&nbsp;Wilson Alves Ribeiro Neto,&nbsp;Alessandra de Almeida Lucas,&nbsp;Aparecido Junior de Menezes","doi":"10.1007/s10965-024-04183-1","DOIUrl":"10.1007/s10965-024-04183-1","url":null,"abstract":"<div><p>The extraction of cellulose nanocrystals from tucum fibers has not been previously reported in the literature. In this way, tucum fibers underwent extraction processes to obtain cellulose nanocrystals, which were then characterized using techniques such as Fourier Transformed Infrared (FTIR), Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), Thermogravimetry (TG), and chemical composition analysis. The results revealed that the cellulose nanocrystals extracted from tucum fibers exhibited a fine, needle-like morphology with lengths ranging from 50 to 350 nm and diameters from 7.5 to 32.7 nm. The chemical composition analysis showed a high presence of alphacellulose in the fibers (ca. 63.38%). FTIR analysis demonstrated characteristic bands of cellulosic materials, while TG analysis indicated higher ash content and lower Tonset in the cellulose nanocrystals. XRD analysis showed increased crystallinity of the nanocrystals. The study underscores the potential applications of these cellulose nanocrystals as reinforcement in nanocomposite materials, emphasizing their eco-friendly and sustainable nature.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, optical, electrical, and dielectric properties of HPMC/PVP blend reinforced with I2O5 for optoelectronics and energy storage applications","authors":"Maha Aiiad Alenizi,&nbsp;E. H. Mater,&nbsp;G. M. Asnag,&nbsp;S. A. Al-Ghamdi,&nbsp;Amani M. Al-Harthi,&nbsp;Reem Alwafi,&nbsp;E. M. Abdallah,&nbsp;Ahmed N. Al-Hakimi,&nbsp;Eman Alzahrani,&nbsp;Randa A. Althobiti,&nbsp;E. M. Abdelrazek,&nbsp;A. A. Al-Muntaser,&nbsp;Abdu Saeed","doi":"10.1007/s10965-024-04181-3","DOIUrl":"10.1007/s10965-024-04181-3","url":null,"abstract":"<div><p>Herein, HPMC/PVP/I₂O₅ composite samples were prepared from the blend of two polymers, hydroxypropyl methylcellulose (HPMC) and polyvinylpyrrolidone (PVP), filled with different concentrations of iodine pentoxide (I₂O₅) as fillers by using the solution casting technique for advanced applications in optoelectronics and energy storage. The addition of I₂O₅ as a filler aims to enhance the optical and electrical properties of HPMC/PVP/I₂O₅ composite samples. Comprehensive characterizations were conducted to elucidate the structural, optical, and electrical/dielectric properties relationships and to assess the suitability of these materials for required applications. XRD scans demonstrate the semi-crystalline structure of the pure blend and show a decrease in the degree of crystallinity due to the incorporation of I₂O₅. UV-Vis spectroscopy indicated enhanced optical properties within the composites, characterized by a reduction in the indirect/direct optical energy gap of 4.74/5.14 eV for pure HPMC/PVP matrix to 2.61/3.64 eV for the polymeric matrix containing 5 wt% I₂O₅. Furthermore, the incorporation of I₂O₅ led to a significant increase in AC conductivity compared to the pristine polymer blend. The dielectric constant (ε′) increased in the low-frequency region due to space charge polarization. In the dielectric properties, space charge polarization revealed higher values, where the ε′ increased at lower frequency regions. Nyquist plots exhibited distinctive features, including semicircles at low frequencies and inclined lines at high frequencies. The decrease in the radius of these semicircles with increasing filler content suggests a correlation with the composite’s electrical properties. Electrical equivalent circuit models have described these observations. These findings collectively suggest the potential of these composites as bandgap tuners, optical sensors, tunable dielectrics, and promising candidates for solid polymer electrolytes. Their incorporation could significantly advance the performance of next-generation energy storage and conversion devices.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}