Journal of Applied Polymer Science最新文献_第2页

Low-Voltage Synergistic Thermal Conductivity of Wood-Based Graphene Composite Electrothermal Films 木基石墨烯复合电热膜的低压协同导热性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-02 DOI: 10.1002/app.57669

Tao Zhang, Xu Tang, Bo Guan, Chunmei Yang, Siman Zhou, Xiaoyu Feng, Mengjiao Shi, Wen Qu

{"title":"Low-Voltage Synergistic Thermal Conductivity of Wood-Based Graphene Composite Electrothermal Films","authors":"Tao Zhang, Xu Tang, Bo Guan, Chunmei Yang, Siman Zhou, Xiaoyu Feng, Mengjiao Shi, Wen Qu","doi":"10.1002/app.57669","DOIUrl":"https://doi.org/10.1002/app.57669","url":null,"abstract":"<div>\u0000 \u0000 To address the limitations of conventional low-voltage electric heaters in achieving high saturation temperatures and rapid electrothermal response, this study presents a high-performance composite film of graphene nanoplatelets (GNP)/multiwalled carbon nanotubes (MWCNT) with a three-dimensional conductive network, fabricated via a layer-by-layer coating and hot-pressing process, utilizing pretreated natural wood veneer with enhanced hydroxyl group exposure as a sustainable substrate. Thermochemical and microstructural analyses reveal that a 1:1 GNP/MWCNT mass ratio optimizes the synergistic effect, where MWCNT bridges GNP layers to establish a continuous conductive pathway, reducing interfacial resistance and enhancing thermal transport. The resultant composite film with four coating layers (thickness: ~120 μm) exhibits exceptional electrical conductivity (2000 S·m−1) and rapid Joule heating response (2 s), achieving a saturation temperature of 66.1°C–67.9°C under 4 V applied voltage. Cyclic stability tests confirm consistent performance over 3600 s at 4 V, with minimal temperature fluctuations. Furthermore, infrared thermography demonstrated uniform heat distribution (ΔT < 3°C across the surface) and superior heating rates (66°C in 40 s) compared to traditional resistance wire films. This scalable approach offers potential for eco-friendly, high-efficiency electrothermal materials in decorative applications.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 43","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237195","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

In-Situ Electrospun TEOS-Modified Superhydrophobic PVDF-HFP Membrane (UPM4) for Enhanced Direct Contact Membrane Distillation 原位电纺丝teos改性超疏水PVDF-HFP膜（UPM4）用于增强直接接触膜蒸馏

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-02 DOI: 10.1002/app.57707

Monis Bin Abid, Aisha Shamim, Gul-E-Nayyab, Lassaad Gzara, Iqbal Ahmed Moujdin, Nadeem Baig, Roswanira Abdul Wahab

{"title":"In-Situ Electrospun TEOS-Modified Superhydrophobic PVDF-HFP Membrane (UPM4) for Enhanced Direct Contact Membrane Distillation","authors":"Monis Bin Abid, Aisha Shamim,  Gul-E-Nayyab, Lassaad Gzara, Iqbal Ahmed Moujdin, Nadeem Baig, Roswanira Abdul Wahab","doi":"10.1002/app.57707","DOIUrl":"https://doi.org/10.1002/app.57707","url":null,"abstract":"<div>\u0000 \u0000 Due to the progress of society and the growth of the population, the crisis related to the availability of freshwater resources has become increasingly prominent. In order to address this issue, membrane distillation (MD) has emerged as a widely employed technique for the recovery and utilization of fresh water. Nonetheless, the application of MD has been hindered by challenges such as membrane wetting and membrane fouling. To overcome these obstacles, this study presents a novel approach for the in situ creation of a UPM4 superhydrophobic poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) membrane containing TEOS through an electrospinning process, specifically designed for direct contact membrane distillation (DCMD). The influence of thickness, porosity, and liquid entry pressure (LEP) was thoroughly investigated. The hydrophobicity of the membrane was evaluated through contact angle measurements, which were conducted using optical contact angle goniometry. The composition of functional groups was analyzed using Fourier-transform infrared spectroscopy (FTIR). The morphology of the membrane was examined using scanning electron microscopy (SEM). Ultimately, all of the electrospun membranes exhibited a sufficient level of hydrophobicity to be effectively employed in DCMD.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284626","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

Enhanced Thermal, Mechanical, and Barrier Properties of Packaging Grade Linear Low-Density Polyethylene (LLDPE) Nanocomposites With Commercial Graphene Nanoplatelets 商用石墨烯纳米片增强包装级线性低密度聚乙烯（LLDPE）纳米复合材料的热、机械和阻隔性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-02 DOI: 10.1002/app.57689

Marcos L. Dias, Bruno A. M. Ribeiro, Anna L. M. M. Toledo, Victor J. R. R. Pita

{"title":"Enhanced Thermal, Mechanical, and Barrier Properties of Packaging Grade Linear Low-Density Polyethylene (LLDPE) Nanocomposites With Commercial Graphene Nanoplatelets","authors":"Marcos L. Dias, Bruno A. M. Ribeiro, Anna L. M. M. Toledo, Victor J. R. R. Pita","doi":"10.1002/app.57689","DOIUrl":"https://doi.org/10.1002/app.57689","url":null,"abstract":"<div>\u0000 \u0000 In this work, the rheological, thermal, mechanical, and barrier properties of nanocomposites based on metallocene-based linear low-density polyethylene (mLLDPE) and a commercial graphene nanoplatelet (GNP) prepared by melt mixing extrusion were investigated. This type of LLDPE is important in the production of flexible packaging films for food, and the addition of GNP may improve barrier and mechanical properties. This particular GNP presents approximately 5% volatile substances (impurity, water, or functional groups) and a mixed morphology composed of crystalline leaves surrounded by an amorphous material, with a predominance of spot defects of vacancy 16 nm distant. At ideal concentrations, this GNP acted as a processing aid, decreasing torque and pressure during processing. The increase of GNP in the nanocomposites increases the complex viscosity and torque. Excellent dispersion of the nanofiller in the polymer matrix was attained. This GNP acts as a nucleating agent in LLDPE, increasing the degree of crystallinity and crystallization temperature, showing a higher crystallinity for lower GNP concentrations. The growth of two types of crystals was observed, and the presence of GNP increased the formation of smaller crystals. Although the crystalline melting temperature and crystallization enthalpy did not change significantly in relation to the neat polymer, the melting enthalpy increases with GNP concentration. The addition of the GNP increases the barrier properties to oxygen and water vapor and the thermal stability of the nanocomposites. The introduction of the GNP also increases Young's modulus but decreases elongation and stress at break in comparison to the neat LLDPE.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284629","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

In Situ Polymerized Poly(Butylene Succinate)/Organically Modified Montmorillonite Nanocomposites: Low Loading for Enhanced Melt Strength and Mechanical Properties 原位聚合聚丁二酸丁二烯/有机改性蒙脱土纳米复合材料：低负荷增强熔体强度和机械性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-02 DOI: 10.1002/app.57604

Huihui Cao, Jiale Li, Guohe Xu, Siyu Du, Shaojie Zhang, Ruxia Guo

{"title":"In Situ Polymerized Poly(Butylene Succinate)/Organically Modified Montmorillonite Nanocomposites: Low Loading for Enhanced Melt Strength and Mechanical Properties","authors":"Huihui Cao, Jiale Li, Guohe Xu, Siyu Du, Shaojie Zhang, Ruxia Guo","doi":"10.1002/app.57604","DOIUrl":"https://doi.org/10.1002/app.57604","url":null,"abstract":"<div>\u0000 \u0000 Poly(butylene succinate) (PBS)/organically modified montmorillonite (OMMT) nanocomposites are prepared via in situ polymerization with low OMMT loading (0.3 wt%). This study systematically compares pure PBS and melt-compounded PBS/OMMT nanocomposites. Investigation of OMMT loadings (0.1–0.7 wt%) reveals that 0.3 wt% OMMT yields the optimal property balance. Fourier transform infrared spectroscopy (FTIR) confirms the successful synthesis of both materials. X-ray diffraction (XRD) shows the expansion of OMMT interlayer spacing from 2.28 nm to 5.93 nm, forming an intercalated structure. Scanning electron microscopy (SEM) demonstrates uniform dispersion without agglomeration. Differential scanning calorimetry (DSC) indicates enhanced crystallization: crystallization temperature (T\u0000 \u0000 c\u0000 ) reaches 73.5°C, melting temperature (T\u0000 \u0000 m\u0000 ) 116.4°C, melting enthalpy (ΔH\u0000 \u0000 m\u0000 ) increases from 37.27 J·g−1 to 58.74 J·g−1, and crystallinity (X\u0000 \u0000 c-DSC\u0000 ) rises to 53.16%. Polarized optical microscopy (POM) reveals refined spherulite size. Rheological tests show a melt flow rate (MFR) of 6.86 g·(10 min)−1 with enhanced melt strength. Tensile strength reaches 37.57 MPa (2.2% higher than pure PBS) and elongation at break achieves 67.76% (498% higher than pure PBS; 42.9% higher than melt-blended nanocomposites). This study focuses on enhancing the melt strength and mechanical properties of PBS with low-content OMMT, facilitating its processing applications and providing a theoretical basis for fully biodegradable materials.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 41","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101000","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

Porous Elastic Composite Scaffolds Based on Enzymatically Synthesized Poly(Glycerol Adipate) and Bioglass: The Effect of L-Lysine Diisocyanate Content on Crosslinking Degree on Mechanical Properties 酶促合成聚己二酸甘油和生物玻璃多孔弹性复合支架：l -赖氨酸二异氰酸酯含量对交联度和力学性能的影响

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-01 DOI: 10.1002/app.57693

Michał Grzymajło, Anna Krokos, Konrad Szustakiewicz, Magdalena Kobielarz, Ewelina Ortyl, Anna Nikodem, Lidia Ciołek, Monika Biernat, Sylwia Rodziewicz-Motowidło, Artur Oziębło, Małgorzata Gazińska

{"title":"Porous Elastic Composite Scaffolds Based on Enzymatically Synthesized Poly(Glycerol Adipate) and Bioglass: The Effect of L-Lysine Diisocyanate Content on Crosslinking Degree on Mechanical Properties","authors":"Michał Grzymajło, Anna Krokos, Konrad Szustakiewicz, Magdalena Kobielarz, Ewelina Ortyl, Anna Nikodem, Lidia Ciołek, Monika Biernat, Sylwia Rodziewicz-Motowidło, Artur Oziębło, Małgorzata Gazińska","doi":"10.1002/app.57693","DOIUrl":"https://doi.org/10.1002/app.57693","url":null,"abstract":"<div>\u0000 \u0000 In this research, poly(glycerol adipate) prepolymer (pPGA) was synthesized using enzymatic polymerization of divinyl adipate (DVA) and glycerol in a reaction carried out in the presence of the enzyme Lipase B from a Candida Antarctica. The pPGA was then solved in 1,4-dioxane and reacted with L-lysine diisocyanate (LDI), then mixed with bioglass, poured into a mold with sodium chloride, cured, and freeze-dried. A novelty of this work is the use of LDI, which plays a dual role: it is a cross-linking agent and also a bioactive agent that is chemically bound to the polymer network of the scaffold. Three types of porous composite scaffolds having 20 wt.% of bioglass and different cross-linking degrees (25, 50 and 100 mol% of LDI) were investigated. The scaffolds were characterized by means of porosity, density, and morphology. All tested materials were subjected to a quasi-tatic compression test. Each material was compressed 10 times. It was shown that the materials exhibited a return to their original shape even with a large compression strain of 90%. An imaging study of the scaffolds before and after compression was conducted using computed tomography (CT). The CT study showed that the resulting materials were not significantly mechanically damaged in the multi-ompression process.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284761","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

Design and Characterization of Porous Polycaprolactone Membranes via a Facile Precoagulation Method 用易混凝法设计和表征多孔聚己内酯膜

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-01 DOI: 10.1002/app.57700

Preeti Sharma, Chetna Verma, Nasir Ali, Yuvraj Singh Negi, Bhuvanesh Gupta, Sujay Chattopadhyay

{"title":"Design and Characterization of Porous Polycaprolactone Membranes via a Facile Precoagulation Method","authors":"Preeti Sharma, Chetna Verma, Nasir Ali, Yuvraj Singh Negi, Bhuvanesh Gupta, Sujay Chattopadhyay","doi":"10.1002/app.57700","DOIUrl":"https://doi.org/10.1002/app.57700","url":null,"abstract":"<div>\u0000 \u0000 This work introduces a controlled fabrication approach for developing porous polycaprolactone (PCL) membranes with tunable architecture and reinforced mechanical properties, utilizing a nonsolvent-induced phase separation (NIPS) methodology. Chloroform was employed as the primary solvent, and the nonsolvent phase consisted of ethanol–water mixtures in varying proportions to manipulate phase dynamics during membrane formation. The impact of nonsolvent composition on the structural, thermal, and mechanical attributes of the membranes was rigorously assessed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), atomic force microscopy (AFM), and tensile testing. The results reveal that the nonsolvent ratio plays a decisive role in determining pore uniformity and polymer crystallization. A 50:50 ethanol-to-water composition yielded membranes with the most consistent pore distribution and peak surface roughness (3.9 nm), alongside the highest degree of crystallinity observed. Mechanical testing confirmed that this formulation achieved the most favorable performance, with a tensile strength of 1.83 MPa and elongation at break reaching 62.03%. These insights establish a straightforward yet effective route to tailor the properties of PCL membranes for diverse biomedical applications such as regenerative scaffolds and controlled therapeutic delivery.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284759","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

Exploring the Solubility Characteristics of a Biocompatible Polymer: The Case of PAmOx in Water 探索生物相容性聚合物的溶解度特性：以PAmOx在水中为例

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-08-01 DOI: 10.1002/app.57722

Sara Del Galdo, Agnese Ricci, Luca Stefanuto, Carlo Andrea De Filippo, Giancarlo Masci, Fabio Bruni, Tecla Gasperi, Barbara Capone

{"title":"Exploring the Solubility Characteristics of a Biocompatible Polymer: The Case of PAmOx in Water","authors":"Sara Del Galdo, Agnese Ricci, Luca Stefanuto, Carlo Andrea De Filippo, Giancarlo Masci, Fabio Bruni, Tecla Gasperi, Barbara Capone","doi":"10.1002/app.57722","DOIUrl":"https://doi.org/10.1002/app.57722","url":null,"abstract":"<div>\u0000 \u0000 This study investigates the behavior of a biocompatible polyoxazoline (PO) polymer in water. POs are of interest for biological applications due to their biocompatibility and thermoresponsive behavior, making them ideal polymers for developing smart materials. This study focuses on PAmOx, a macromolecule that has recently been used to develop nanoscale tools for water remediation. However, despite the significant interest in the applications of PAmOx, its behavior in water and its thermal response remain to be thoroughly characterized. To address such a gap, we present a combined computational and experimental study of PAmOx's properties in aqueous solution. UV–Vis experimental results reveal a distinct transition temperature of 40°C, which is consistent with the thermoresponsive nature of numerous POs. Above this temperature, significant macromolecular aggregation occurs. Computational results demonstrate that, while temperature has no impact on hydration at the single-chain level in water, an increase in temperature promotes aggregation by enhancing hydrophobic effects. Crucially, during aggregation, interchain hydrogen bonds replace polymer-water interactions, thereby stabilizing the aggregate by maintaining an almost constant number of hydrogen bonds per monomer.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284760","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

Hydrogen-Bonded Organic Framework Nanosheet-Modulated Polymer/Filter Paper Composite Janus Separator for Aqueous Zinc-Ion Battery 用于锌离子电池的氢键有机框架纳米片调制聚合物/滤纸复合Janus分离器

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-07-31 DOI: 10.1002/app.57721

Wenjin Hu, Xin Liu, Xingzhi Cui, Aixiang Li, Qiuhong Li, Zijian Lyu

{"title":"Hydrogen-Bonded Organic Framework Nanosheet-Modulated Polymer/Filter Paper Composite Janus Separator for Aqueous Zinc-Ion Battery","authors":"Wenjin Hu, Xin Liu, Xingzhi Cui, Aixiang Li, Qiuhong Li, Zijian Lyu","doi":"10.1002/app.57721","DOIUrl":"https://doi.org/10.1002/app.57721","url":null,"abstract":"<div>\u0000 \u0000 Aqueous zinc-ion batteries (AZIBs), recognized for their high safety, theoretical capacity, and environmental benignity, are considered ideal candidates for large-scale energy storage. However, issues such as zinc dendrite formation and uncontrolled side reactions at the zinc anode impede their practical application. Traditional separators are costly, bulky, and ineffective at inhibiting zinc dendrite growth. We developed a filter paper (FP)-based Janus separator (FP-HOFs) utilizing hydrogen-bonded organic frameworks (HOFs) nanosheets assembled via hydrogen bonding. The unique hydrogen-bonding framework of HOFs, enriched with functional groups, can attract Zn2+, immobilize the surrounding solvated ions, facilitate desolation, accelerate zinc deposition kinetics, and regulate the separator's surface pore structure to uniformly distribute ionic flux, thereby preventing zinc dendrite formation. In batteries assembled with FP-HOFs separators, the zinc anode demonstrated stable charge/discharge performance for more than 500 h at a current density of 2.5 mA cm−2, with a high coulombic efficiency of 99.0% after 2000 cycles at the same current density and low nucleation overpotential. Zn||V2O5 batteries incorporating FP-HOFs separator exhibited superior cyclic capacity and stability, reaching a maximum capacity of 271.9 mAh g−1 at a current density of 3 A g−1, which is 1.37 times and 1.90 times that of FP separator, respectively. Furthermore, Zn||MnO2 batteries with FP-HOFs separator maintained a capacity retention of 57.2% after 350 charge/discharge cycles, significantly outperforming glass fiber (GF) with 1.3% and FP with 13.6%. The unique design of this Janus separator provides helpful guidance for low-cost, safe, and high-performance AZIBs.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284906","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

Enhanced CO2 Separation Performance of Matrimid 5218 Membrane by Incorporation of Poly(Arylene Ether Sulfone) Containing Phenylphosphine Oxide Group 苯基氧化膦基聚芳醚砜增强5218基质膜CO2分离性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-07-31 DOI: 10.1002/app.57711

Murshid Jaman Chowdhury, Nathaniel Yeboah, Jianzhong Lou, Aleksandrs Prokofjevs, Debasish Kuila

{"title":"Enhanced CO2 Separation Performance of Matrimid 5218 Membrane by Incorporation of Poly(Arylene Ether Sulfone) Containing Phenylphosphine Oxide Group","authors":"Murshid Jaman Chowdhury, Nathaniel Yeboah, Jianzhong Lou, Aleksandrs Prokofjevs, Debasish Kuila","doi":"10.1002/app.57711","DOIUrl":"https://doi.org/10.1002/app.57711","url":null,"abstract":"This study aims to synthesize and characterize poly(arylene ether sulfone) containing phenylphosphine oxide (PESPPO) group and incorporate it into Matrimid 5218 at different loadings to fabricate membranes for CO2 separation from CH4 and N2. Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), and Differential Scanning Calorimetry (DSC) are employed to study the interactions between PESPPO and Matrimid 5218. Structural, morphological, and thermal analyses of the fabricated membranes reveal excellent miscibility, even at higher PESPPO loadings. The single-gas permeability results for CO2, CH4, and N2 gases through the fabricated membranes demonstrate significant improvements in CO2 separation from CH4 and N2 compared to the neat Matrimid 5218 membrane. The maximum CO2 permeability is achieved at a 20 wt.% PESPPO loading. However, the highest CO2/N2 and CO2/CH4 selectivity is measured at 15 wt.% PESPPO loading. The optimized blend, comprising 15 wt.% PESPPO, exhibits a 2.36-times increase in CO2 permeability, along with a 2.10-times and 1.92-times enhancement in CO2/N2 and CO2/CH4 selectivity, respectively, compared to the neat Matrimid 5218. Moreover, feed pressure variations minimally influence CO2/N2 and CO2/CH4 selectivity, and prolonged testing time does not noticeably affect CO2 selectivity over N2 and CH4.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.57711","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284905","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

Method for Rapid Determination of Hexeneuronic Acid in Non-Wood Pulp by Multivariate Analysis of FT-NIR Spectroscopic Data FT-NIR光谱数据多元分析快速测定非木浆中己烯醛酸的方法

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2025-07-31 DOI: 10.1002/app.57698

Mohammad Nashir Uddin, Taslima Ferdous, Md. Nur Alam Likhon, Riyadh Hossen Bhuiyan, Yonghao Ni, Md. Mostafizur Rahman, M. Sarwar Jahan

{"title":"Method for Rapid Determination of Hexeneuronic Acid in Non-Wood Pulp by Multivariate Analysis of FT-NIR Spectroscopic Data","authors":"Mohammad Nashir Uddin, Taslima Ferdous, Md. Nur Alam Likhon, Riyadh Hossen Bhuiyan, Yonghao Ni, Md. Mostafizur Rahman, M. Sarwar Jahan","doi":"10.1002/app.57698","DOIUrl":"https://doi.org/10.1002/app.57698","url":null,"abstract":"<div>\u0000 \u0000 In the chlorine dioxide bleaching stage of elemental chlorine-free (ECF) chemical pulp production, hexeneuronic acid (HexA) in the brown stock contributes to the kappa number and consumes chlorine dioxide. This study aims to develop a feasible, environmentally friendly, and rapid method for quantifying HexA content in non-wood pulp using FT-NIR spectroscopy combined with chemometric modeling. The HexA levels were measured in 44 non-wood pulp samples to validate the approach. The same samples were analyzed using FT-NIR spectroscopy, and the obtained spectral data were preprocessed using Savitzky–Golay (S–G) smoothing followed by first and second derivatives, a common approach in chemometric analysis. Principal component regression (PCR) and partial least squares regression (PLSR) were evaluated for HexA quantification using both raw and pretreated FT-NIR spectra. The PLSR model demonstrated superior predictive performance (R\u0000 2 = 94.24%) when applied to FT-NIR data preprocessed with Savitzky–Golay filtering, derivatives, and leverage correction. Finally, the validated model exhibited excellent accuracy in predicting HexA content in unknown non-wood pulp samples, achieving a high correlation coefficient (r = 0.993).\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284907","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