International Journal of Polymer Analysis and Characterization最新文献_第2页

The effect of fiber parameters and surface treatment in caster fiber- reinforced polyester composites 纤维参数及表面处理对铸体纤维增强聚酯复合材料性能的影响

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-03-19 DOI: 10.1080/1023666X.2025.2477562

K. Nijandhan , R. Muralikannan , Deepak B. Thimiri Govinda Raj , E. L. Pradeesh

引用次数: 0

A green chemistry of the polymerization of methyl methacrylate (MMA) and a new copolymer of propylene oxide (PO) using natural catalysts 用天然催化剂聚合甲基丙烯酸甲酯（MMA）和新型环氧丙烷（PO）共聚物的绿色化学

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-03-11 DOI: 10.1080/1023666X.2025.2474015

Mohamed Benadda , Karima Oussadi , Boumediene Haddou , Asmaa Benettayeb , Basant Lal , Soumya Ghosh , Ahmad Hosseini-Bandegharaei

{"title":"A green chemistry of the polymerization of methyl methacrylate (MMA) and a new copolymer of propylene oxide (PO) using natural catalysts","authors":"Mohamed Benadda , Karima Oussadi , Boumediene Haddou , Asmaa Benettayeb , Basant Lal , Soumya Ghosh , Ahmad Hosseini-Bandegharaei","doi":"10.1080/1023666X.2025.2474015","DOIUrl":"10.1080/1023666X.2025.2474015","url":null,"abstract":"<div><div>The development of sustainable polymerization methods is essential for promoting green chemistry and minimizing environmental impact. This manuscript discusses the polymerization of methyl methacrylate (MMA), which resulted in a number-average molecular weight of <span><math><mrow><mrow><mrow><mrow><mover><mrow><mrow><mrow><msub><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msub></mrow></mrow></mrow><mo>¯</mo></mover></mrow></mrow></mrow></mrow><mo>=</mo><mn>52</mn><mo></mo><mn>400</mn><mo></mo><mi>g</mi><mo>/</mo><mtext>mol</mtext></math></span> and polydispersity of <span><math><mrow><mrow><msub><mrow><mi>I</mi></mrow><mrow><mi>p</mi></mrow></msub></mrow></mrow><mo>=</mo><mn>1.4</mn></math></span>, using a natural anionic catalyst. The yield of the polymerization is influenced by the ratio of Maghnite-Na + to monomer weight and the duration of the reaction. A yield of 65% was achieved with a maghnite-Na+/monomer weight ratio of 10% after 8 h of polymerizing methyl methacrylateMMA. Additionally, a new copolymer of propylene oxide (PO) and methyl methacrylate (MMA) was synthesized through cationic polymerization. This copolymerization was conducted in bulk at a temperature of 20 °C. The yield of the copolymerization depends on the amount of maghnite-H<sup>+</sup> used and the length of the reaction time. This modification provides a nontoxic and effective proton source for the cationic polymerization of various vinylic and heterocyclic monomers. The highest yield of the copolymer was obtained using Algerian montmorillonite modified with 0.25 M H<sub>2</sub>SO<sub>4</sub>. The structures of the synthesized products were confirmed through <sup>1</sup>H-NMR, <sup>13</sup>C-NMR, Fourier transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), and differential scanning calorimetry (DSC) analysis.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 4","pages":"Pages 441-456"},"PeriodicalIF":1.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891498","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}

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Surface reactivity of polypropylene grafted with carboxylate groups (COO−) in the competitive adsorption of Pb2+, Cu2+, and Cd2+ in aqueous solution 羧酸基接枝聚丙烯（COO−）在水溶液中竞争吸附Pb2+、Cu2+和Cd2+时的表面反应性

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-03-01 DOI: 10.1080/1023666X.2025.2470944

Mariela Molina Jacinto , Karen Estefanía Zárate-Rodríguez , Rosa María Gómez-Espinosa

{"title":"Surface reactivity of polypropylene grafted with carboxylate groups (COO−) in the competitive adsorption of Pb2+, Cu2+, and Cd2+ in aqueous solution","authors":"Mariela Molina Jacinto , Karen Estefanía Zárate-Rodríguez , Rosa María Gómez-Espinosa","doi":"10.1080/1023666X.2025.2470944","DOIUrl":"10.1080/1023666X.2025.2470944","url":null,"abstract":"<div><div>In this study, we developed a new material (PPAAcO<sup>−</sup>Na<sup>+</sup>) charge with carboxylate groups to remove metal ions (Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Cu<sup>2+</sup>) through ion exchange of multimetal solutions, (PPAAcO)<sub>n</sub>M<sup>2+</sup>. The polymeric surface of polypropylene (PP) was functionalized with carboxylate groups (PPAAcO<sup>−</sup>Na<sup>+</sup>) through grafting and the acid-base reaction of carboxylic acid (PPAA). FTIR-ATR corroborated the change of –COOH (1711 cm<sup>−1</sup>) to COO<sup>−</sup>Na<sup>+</sup> (1562 cm<sup>−1</sup>) on functionalized PP. TGA-DSC showed a decrease in the melting energy of PPAA (75.09 J/g) and PPAAcO<sup>−</sup>Na<sup>+</sup> (44.98 J/g). The effect of the grafting degree of COO<sup>−</sup> and its relationship with the concentration of acrylic acid (AA) was studied with grafting of 30%, 80%, and 154% on PPAAcO<sup>−</sup>Na<sup>+</sup>. SEM-EDS evidenced the relationship of the AA concentration, showing a thickening of the PPAAcO<sup>−</sup>Na<sup>+</sup> fibers. The performance of PPAAcO<sup>−</sup>Na<sup>+</sup> as a function of the grafting degree in the removal of Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Cu<sup>2+</sup>, showed the following trend: Pb<sup>2+</sup>>Cd<sup>2+</sup>>Cu<sup>2+,</sup> achieving an efficiency greater than 90%. The fast adsorption of the metallic ions (120 min) suggests an ion exchange process, promoting a chemical interaction between PPAAcO<sup>−</sup>Na<sup>+</sup> and the metallic ions, resulting in a polymer-metal complex (PPAAcO)<sub>n</sub>M<sup>2+</sup>. PPAAcO<sup>−</sup>Na<sup>+</sup> has the potential to be a new, easily obtained material capable of coordinating and stabilizing metal ions on its surface.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 4","pages":"Pages 423-440"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891500","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

The optimization of leaf-structured polyaniline-titanium dioxide composite toward effective photodegradation of reactive black 5 dyes 叶片结构聚苯胺-二氧化钛复合材料对活性黑5染料有效光降解的优化

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-03-01 DOI: 10.1080/1023666X.2025.2470221

Shu-Hui Khor , Michelle Li-Yen Lee , Wan Jefrey Basirun , Joon-Ching Juan , Sook-Wai Phang

{"title":"The optimization of leaf-structured polyaniline-titanium dioxide composite toward effective photodegradation of reactive black 5 dyes","authors":"Shu-Hui Khor , Michelle Li-Yen Lee , Wan Jefrey Basirun , Joon-Ching Juan , Sook-Wai Phang","doi":"10.1080/1023666X.2025.2470221","DOIUrl":"10.1080/1023666X.2025.2470221","url":null,"abstract":"<div><div>The discharge of toxic organic dye from textile industries causes concerning effects on aquatic life, and this raises the urgent need for an effective treatment method that can preserve the environment. Recently, photocatalysis has been widely studied due to its environmentally friendly nature in which hazardous organic compounds can be converted into carbon dioxide and water through solar energy. In this research, polyaniline (PANI) with a leaf micro/nanostructure (L-PANI) is used to form a composite with different weight % (wt %) of titanium dioxide (TiO<sub>2</sub>) to be used as a photocatalyst toward the photodegradation of Reactive Black 5 (RB5) dyes. Based on the results, L-PANI with 5 wt %, 10 wt %, 20 wt %, and 30 wt % of TiO<sub>2</sub> showed photodegradation of 44.2%, 48.8%, 41.7%, and 35.5%, respectively toward RB5 dyes. The optimum photodegradation parameters were further studied using L-PANI-TiO<sub>2</sub> (10 wt %), and it was found that a photodegradation efficiency of 98.2% is achieved with 80 min of dark adsorption time, 180 min of light reaction time, 10 ppm of initial RB5 dye concentration, and 25 mg of photocatalyst. To achieve 100% photodegradation of RB5 dye, the light reaction time was extended to 210 mines, and the 10 ppm of RB5 dye was successfully photodegraded to 100% using 25 mg of L-PANI-TiO<sub>2</sub> (10 wt %) photocatalyst. This shows the potency of L-PANI-TiO<sub>2</sub> as an effective photocatalyst toward the photodegradation of RB5 dye.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 4","pages":"Pages 408-422"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891495","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}

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From carbon inspiration to energy innovation: epoxy nano-composites for thermal and dielectric excellence 从碳灵感到能源创新：环氧纳米复合材料的热和介电性能卓越

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-02-25 DOI: 10.1080/1023666X.2025.2466582

Gurukarthik Babu Balachandran , Muthu Eshwaran Ramachandran , Hariharasudhan Thangaraj , Anandha Balaji Alexander

{"title":"From carbon inspiration to energy innovation: epoxy nano-composites for thermal and dielectric excellence","authors":"Gurukarthik Babu Balachandran , Muthu Eshwaran Ramachandran , Hariharasudhan Thangaraj , Anandha Balaji Alexander","doi":"10.1080/1023666X.2025.2466582","DOIUrl":"10.1080/1023666X.2025.2466582","url":null,"abstract":"<div><div>In recent years, polymer dielectrics have revolutionized several electrical and related fields. As inductive devices, transformers produce a lot of heat, which makes them susceptible to damage at high voltages and after prolonged use. In this case, an epoxy polymer matrix with nano reinforcement is examined to investigate its potential to enhance a dry-type transformer winding’s cooling and thermal conductivity. The polymer composite consists of nanocarbon blended with epoxy resin to produce a high thermal conductivity composite. Through the incorporation of a range of nanocarbon particles (2%, 4%, 6%, 8%, and 10%), the epoxy resin matrix was modified. Using central composite design optimization, the polymer composite’s composition is also evaluated for optimal performance. In addition, dielectric strength, thermal conductivity, Izod impact, tensile, water absorption tests, thermogravimetric analysis, and morphological studies were conducted for the optimized value from response surface methodology. It was found that the dielectric strength was 145 V/mm, thermal conductivity was 0.45 W/m.K, and Izod impact was 0.6 (J/mm) for the optimized sample. Finally, insulation temperature tests were conducted on a 0.5-kVA dry-type transformer for a prepared sample and compared with the normal winding. The rate of decrease of insulation temperature was found to be 24.4%. The composite increased insulation performance and verified its reliability as a solid coolant. Dry-type transformers in remote microgrids distribute energy from renewable sources like solar and wind energy systems.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 4","pages":"Pages 377-392"},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891496","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

Study on water properties and spatial structure of water in poly(2-methoxy ethylacrylate)s with different molecular weights by nuclear magnetic resonance spectroscopy 核磁共振波谱法研究不同分子量聚（2-甲氧基乙基丙烯酸酯）中水的性质及水的空间结构

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-02-23 DOI: 10.1080/1023666X.2025.2467164

Akira Mochizuki , Yuko Miwa , Konatsu Yoneyama , Chie Yahata , Yoshiki Oda

{"title":"Study on water properties and spatial structure of water in poly(2-methoxy ethylacrylate)s with different molecular weights by nuclear magnetic resonance spectroscopy","authors":"Akira Mochizuki , Yuko Miwa , Konatsu Yoneyama , Chie Yahata , Yoshiki Oda","doi":"10.1080/1023666X.2025.2467164","DOIUrl":"10.1080/1023666X.2025.2467164","url":null,"abstract":"<div><div>Poly(2-methoxyethyl acrylate) (PMEA) is known for its favorable blood compatibility, attributed to its unique intermediate water content, as identified by differential scanning calorimetry. Previously, we reported that PMEA contains two types of water—upfield and downfield waters—characterized by <sup>2</sup>H-nuclear magnetic resonance (<sup>2</sup>H-NMR) and proposed that upfield water is a key factor in expressing good blood compatibility. In the present study, further investigations of the role of upfield water and clarification of the spatial water structure were performed using PMEAs with different molecular weights. <sup>2</sup>H-NMR analysis revealed that the upfield water content was almost constant, regardless of the molecular weight, whereas the downfield water content increased with an increase in the molecular weight of PMEA. Based on these findings, the role of upfield water is discussed. Homonuclear and heteronuclear Overhauser effect spectroscopies revealed that upfield water existed near the methoxy group of PMEA, within a 0.5 nm range.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 4","pages":"Pages 393-407"},"PeriodicalIF":1.7,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891497","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

Exploring the material and mechanical characteristics of 3D printed composites utilizing nSiO2-particulate-reinforced PLA/HDPE filaments with potential applications in the medical field 探索利用nsio2颗粒增强PLA/HDPE长丝的3D打印复合材料的材料和力学特性，在医疗领域具有潜在的应用前景

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-01-09 DOI: 10.1080/1023666X.2024.2444320

Aezhisai Vallavi M. S. , Mugilan. T. , Sridhar. N.

{"title":"Exploring the material and mechanical characteristics of 3D printed composites utilizing nSiO2-particulate-reinforced PLA/HDPE filaments with potential applications in the medical field","authors":"Aezhisai Vallavi M. S. , Mugilan. T. , Sridhar. N.","doi":"10.1080/1023666X.2024.2444320","DOIUrl":"10.1080/1023666X.2024.2444320","url":null,"abstract":"<div><div>Significant progress in 3D printing technology over recent decades has allowed for the creation of biomedical products with enhanced properties. The incorporation of composite materials in 3D printing offers innovative solutions to a wide range of real-world challenges in medical applications. The present research focuses on the additively manufactured 3D-printed polymer composites developed through the fused deposition modeling technique. Mechanical characteristics such as tensile, compressive, flexural, and Shore D hardness have been investigated in pure PLA/HDPE and with different 1, 2, 3 wt.% of functionalized nSiO<sub>2</sub> reinforced PLA/HDPE. Their results showed that excellent mechanical strength was observed in the 2 wt.% nSiO<sub>2</sub>/PLA/HDPE composite as 147.3 MPa tensile strength and 4.05 GPa Young's modulus. Subsequently, the material characteristics of the 2 wt.% nSiO<sub>2</sub>-reinforced composite were investigated with various analytical techniques. FESEM micrographs revealed that the developed composites with a rougher surface promoted cell attachment and proliferation and had no delaminated parts in the printed layer. EDAX analysis confirmed the reinforcement material nSiO<sub>2</sub> particles present in the developed composite. The prominent sharp peaks of nSiO<sub>2</sub> incorporated in the 3D-printed composite have an excellent crystallinity nature with 84.3%. The presence of nSiO<sub>2</sub> reinforcement in the composite matrix was confirmed by FTIR and Raman spectroscopy. TGA/DTG results displayed the 7.36% high thermal stability of the nSiO<sub>2</sub>-reinforced composite. Thus, the developed composite was found to be a promising material for bone implants in biomedical applications.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 2","pages":"Pages 155-176"},"PeriodicalIF":1.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176510","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

Fabrication, optical behavior and structural characteristics of the poly (4-chloroaniline)/silver nanoparticles materials for optical devices 光学器件用聚（4-氯苯胺）/纳米银材料的制备、光学性能及结构特性

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-01-06 DOI: 10.1080/1023666X.2024.2447000

B. M. Alotaibi , Hadeel A. Aldossary , A. Atta , E. Abdeltwab , M. M. Abdelhamied

{"title":"Fabrication, optical behavior and structural characteristics of the poly (4-chloroaniline)/silver nanoparticles materials for optical devices","authors":"B. M. Alotaibi , Hadeel A. Aldossary , A. Atta , E. Abdeltwab , M. M. Abdelhamied","doi":"10.1080/1023666X.2024.2447000","DOIUrl":"10.1080/1023666X.2024.2447000","url":null,"abstract":"<div><div>In this study, the flexible composite P(4-CAni)/AgNPs, which consists of poly 4-chloroaniline P(4-CAni) and silver nanoparticles (AgNPs), was successfully prepared using the polymerization preparation method. The results were confirmed by the transmission electron microscope (TEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The XRD shows the successful fabrication of the composite and confirms that the pure P(4-CAni) has a typical pattern for the amorphous conducting polymer. The results of the TEM indicated the size of AgNPs in the range from 13 to 28 nm. In addition, the FTIR demonstrates that the AgNPs nanoparticles are uniformly interacted with the P(4-CAni). The wettability and adhesion work of the surface were determined by measuring the contact angle. Moreover, the band tail increased from 1.15 eV for the P(4-CAni) to 1.85 eV, 1.91 eV, and 1.96 eV when P(4-CAni) is mixed with 1.5%, 3%, and 4.5% AgNPs, respectively. Also, adding 1.5%, 3%, and 4.5% AgNPs decreases the band gap energy from 3.48 eV for the P(4-CAni) to 3.12 eV, 3.04 eV, and 2.90 eV, respectively. The interaction between P(4-CAni) and AgNPs enhances the structural properties of the composite, making the P(4-CAni)/AgNPs composite a multifunctional material suitable for various applications. The results demonstrate the fabricated nanocomposite materials exhibiting novel optical properties, which could lead to the use of these composites in optoelectronic devices.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 2","pages":"Pages 177-189"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176507","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

Physical and biological characteristics of electrospun poly (vinyl alcohol) and reduced graphene oxide nanofibrous structure 静电纺聚乙烯醇和还原氧化石墨烯纳米纤维结构的物理和生物学特性

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-01-02 DOI: 10.1080/1023666X.2024.2424264

Hilal Turkoglu Sasmazel , Marwa Alazzawi , Melike Gozutok , Veera Sadhu

{"title":"Physical and biological characteristics of electrospun poly (vinyl alcohol) and reduced graphene oxide nanofibrous structure","authors":"Hilal Turkoglu Sasmazel , Marwa Alazzawi , Melike Gozutok , Veera Sadhu","doi":"10.1080/1023666X.2024.2424264","DOIUrl":"10.1080/1023666X.2024.2424264","url":null,"abstract":"<div><div>The fabrication of graphene-based nanocomposites has been a topic of increasing interest due to graphene’s exceptional physical properties and the ability to enhance the properties of various polymeric materials. Evaluating the biocompatibility of these nanocomposites is crucial to ensure their safe and effective use in biomedical applications. This study characterized and assessed the biocompatibility of previously fabricated electrospun polyvinyl alcohol (PVA)/reduced graphene oxide rGO fibrous structures by conducting a comprehensive assessment of their physical and biological characteristics. Contact angle measurements revealed that adding rGO to electrospun PVA fibers enhanced the surface wettability, improving the fibrous structure’s PBS absorption capacity and degradation behavior. Including the rGO content resulted in a higher water vapor transmission rate, reaching ∼48 g/m<sup>2</sup>·day for PVA + 0.5 wt.% rGO and ∼45 g/m<sup>2</sup>·day for PVA + 1.0 wt.% rGO, compared to ∼40 g/m<sup>2</sup>·day for electrospun PVA fibers. Cell culture studies, including MTT assay, alkaline phosphatase (ALP) activity analysis, alizarin red staining, fluorescence microscopy, and SEM analyses, demonstrated that electrospun PVA + 1.0 wt.% rGO nanocomposites exhibited superior cell viability, proliferation, and growth compared to other samples, due to the improved physical properties of the PVA + 1.0 wt.% rGO fibrous structure.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 1","pages":"Pages 83-97"},"PeriodicalIF":1.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165149","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

Thermal stability and combustion properties of polyurethane foam modified with manganese phytate and expandable graphite 植酸锰和可膨胀石墨改性聚氨酯泡沫的热稳定性和燃烧性能

IF 1.7 4区工程技术

International Journal of Polymer Analysis and Characterization Pub Date : 2025-01-02 DOI: 10.1080/1023666X.2024.2421816

Xu Zhang , Meng Zhang , Handong Li , Zhi Wang , Hua Xie

{"title":"Thermal stability and combustion properties of polyurethane foam modified with manganese phytate and expandable graphite","authors":"Xu Zhang , Meng Zhang , Handong Li , Zhi Wang , Hua Xie","doi":"10.1080/1023666X.2024.2421816","DOIUrl":"10.1080/1023666X.2024.2421816","url":null,"abstract":"<div><div>Manganese phytate (MnPa) was prepared and synergistically combined with expandable graphite (EG) flame retardant modified polyurethane foam (PUF). Utilizing thermogravimetric (TG), pyrolysis kinetic analysis, CONE analysis, smoke toxicity analysis, limiting oxygen index (LOI), and UL-94 horizontal combustion test procedures, the thermal stability and combustion parameters of the modified PUFs were examined. The flame retardancy and smoke suppression of the modified PUFs were analyzed based on the heat release rate (HRR), total heat release (THR), smoke production rate (SPR), and total smoke release (TSR). The results showed that MEPUF3 had the highest thermal decomposition rate temperature, initial thermogravimetric temperature, and activation energy (E). It was shown that MEPUF3 had the lowest HRR of 17.68 kW/m<sup>2</sup>, the lowest THR of 1.15 MJ/m<sup>2</sup>, the lowest SPR of 0.0046 m<sup>2</sup>/s, the lowest TSR of 19.58 m<sup>2</sup>/m<sup>2</sup>, the lowest Ds of 32.1, the highest transmittance of 57.7%, and the highest LOI of 23.0%. The present study showed that MEPUF3 possessed good thermal stability and flame retardant properties, which provided useful references for subsequent phytate and EG-modified PUFs.</div></div>","PeriodicalId":14236,"journal":{"name":"International Journal of Polymer Analysis and Characterization","volume":"30 1","pages":"Pages 47-67"},"PeriodicalIF":1.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165147","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