Polymer最新文献_第7页

REMOVAL OF BASIC YELLOW DYE MOLECULES WITH CHITOSAN-BASED MAGNETIC FIELD-SENSITIVE PARTICLES FROM THE AQUEOUS SOLUTION

IF 4.6 2区化学

Polymer Pub Date : 2024-11-30 DOI: 10.1016/j.polymer.2024.127895

Ömer İPEK, Şeyda Taşar, Neslihan Duranay

{"title":"REMOVAL OF BASIC YELLOW DYE MOLECULES WITH CHITOSAN-BASED MAGNETIC FIELD-SENSITIVE PARTICLES FROM THE AQUEOUS SOLUTION","authors":"Ömer İPEK, Şeyda Taşar, Neslihan Duranay","doi":"10.1016/j.polymer.2024.127895","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127895","url":null,"abstract":"The study aimed to develop chitosan-based particle sorbents and evaluate their efficiency in removing reactive dyes from wastewater, leveraging chitosan’s hydrophilic and positively charged properties. Polymeric particles were synthesized using a precipitation-aggregation method and characterized via analytical techniques. Sorption performance was tested using Basic Yellow 28 (BY28) dye under varying conditions of temperature, pH, sorbent dosage, dye concentration, and contact time. Optimal conditions were identified as 40°C, pH 7, 0.2 g/L sorbent dosage, 75 mg/L dye concentration, and 180 minutes contact time, achieving a maximum sorption capacity of 330.96 mg/g. Experimental data were evaluated using isotherm models (Langmuir, Freundlich, Temkin, Dubinin-Radushkevich), with the Langmuir isotherm showing an R2 value close to one (0.998), indicating a strong fit. The theoretical maximum sorption capacity (qmax) ranging from 196.08 to 322.58 mg/g across different conditions. Kinetic studies revealed the pseudo-second-order model best described the sorption process, with maximum sorption capacities (qe,c) at different temperatures calculated at 243.90, 294.12, 312.50, and 333.33 mg/g at 25, 30, 35, and 40°C, respectively. The endothermic nature of adsorption indicates improved efficiency at higher temperatures, aligning with industrial requirements. The study highlights the versatility of chitosan particles across a wide range of pH and temperatures, combining chemical and physical adsorption mechanisms. These particles demonstrate stability, efficiency, and eco-friendliness, making them suitable for sustainable water treatment. The findings reinforce the applicability of chitosan in addressing textile wastewater challenges, offering insights into optimization and scalability for industrial effluent management. The robustness of chitosan particles further underscores their potential for broader applications in wastewater treatment.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"7 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enzyme-Responsive Chitosan-Based Electrospun Nanofibers for Enhanced Detection of β-Glucuronidase from Pathogenic E. coli

IF 4.6 2区化学

Polymer Pub Date : 2024-11-30 DOI: 10.1016/j.polymer.2024.127896

Kawaljit Kaur, Holger Schönherr

{"title":"Enzyme-Responsive Chitosan-Based Electrospun Nanofibers for Enhanced Detection of β-Glucuronidase from Pathogenic E. coli","authors":"Kawaljit Kaur, Holger Schönherr","doi":"10.1016/j.polymer.2024.127896","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127896","url":null,"abstract":"Antimicrobial resistance (AMR) poses a significant global health challenge, leading to the ineffectiveness of numerous conventional antibiotics against various bacterial infections. Hence the rapid detection and identification of pathogenic bacteria are imperative for managing AMR and implementing suitable treatment approaches. To improve rapid detection, a biopolymer-based autonomously reporting enzyme-sensitive biopolymer material has been developed for detecting β-glucuronidase (β-Gus) from pathogenic E. coli. In the presence of enzyme β-Gus a blue-colored fluorophore is released from functionalized electrospun chitosan-polyethylene oxide nanofibers, which is monitored via fluorescence spectroscopy. The nanofibers exhibited a 3.4 times enhanced sensitivity compared to neat hydrogels and also to related chromogenic sensing materials. For an observation time of 60 minutes, a limit of detection (LOD) for β-Gus was determined to be 4.7 nM. This nanofiber sensing substrate was then studied with the pathogenic E. coli strain NCTC 10418, showing a three times greater sensitivity compared to the hydrogel substrate. These results are attributed to a larger surface to volume ratio of the electrospun chitosan nanofibers compared to the neat swollen hydrogel.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"27 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Development of Biosorbent from Orange Peel and Fish Skin Waste for usage in Petroleum Industry

IF 4.6 2区化学

Polymer Pub Date : 2024-11-29 DOI: 10.1016/j.polymer.2024.127874

, Balbir Singh Kaith, Rakesh Kumar

{"title":"Development of Biosorbent from Orange Peel and Fish Skin Waste for usage in Petroleum Industry","authors":", Balbir Singh Kaith, Rakesh Kumar","doi":"10.1016/j.polymer.2024.127874","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127874","url":null,"abstract":"In the present work biowaste orange peels and fish collagen-derived hydrophilic super-absorbent was synthesized using polyvinyl alcohol and methacrylic acid, and a hybrid natural pectin-collagen backbone. After optimization of different reaction parameters w.r.t. percentage grafting, the equilibrium water removal capacity of the smart polymer in three different petroleum fraction-water emulsions: petrol-water, diesel-water, and petroleum ether-water was studied and optimized to get the maximum water absorption. The higher equilibrium water uptake capacity was found in the petrol-water emulsion (1.6740 g/g) followed by diesel-water (1.5126 g/g) and petroleum ether-water emulsions (1.3537 g/g). All petroleum fraction-water emulsions, including petrol-water (n = 0.3566), diesel-water (n = 0.3375), and petroleum ether-water (n = 0.3678), were able to allow water to penetrate the 3-D network of the smart polymer through a Fickian diffusion mechanism. The pseudo swelling kinetic model showed that the experimental results were consistent order with theoretical equilibrium water uptake values: 1.9548 g/g (petrol-water), 1.7393 g/g (diesel-water) and 1.6149 g/g (petroleum ether-water) along with swelling rate constant ks = 8.234 ×10−3 g/g min (diesel-water), ks = 7.52 ×10−3 g/g min(petrol-water) and ks = 6.64 ×10−3 g/g min(petroleum ether-water). Further the candidate polymer exhibited the salt resistant water uptake behaviour w.r.t. 1.0, 5.0, 10.0 and 15.0% NaCl concentration and thus, such materials are of great importance in membrane technology. The findings demonstrated that biowaste superabsorbent has a great potential as an environment friendly, cost-effective and “waste to wealth” for removing water from various petroleum fractions in petroleum industries.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"198 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Silane-modified MOF-5 as a compatibilizer for PBAT/PLA blends: Enhancement of mechanical properties, antimicrobial properties, and water barrier properties

IF 4.6 2区化学

Polymer Pub Date : 2024-11-29 DOI: 10.1016/j.polymer.2024.127875

Jing Xu, Pingbo Zhang, Mingming Fan, Pingping Jiang, Shijun Chen, Xunxun Sheng

{"title":"Silane-modified MOF-5 as a compatibilizer for PBAT/PLA blends: Enhancement of mechanical properties, antimicrobial properties, and water barrier properties","authors":"Jing Xu, Pingbo Zhang, Mingming Fan, Pingping Jiang, Shijun Chen, Xunxun Sheng","doi":"10.1016/j.polymer.2024.127875","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127875","url":null,"abstract":"To improve the weak interaction between poly (butylene adipate‐co‐terephthalate) (PBAT) and poly (lactic acid) (PLA) blends, this study added modified metal-organic frameworks (MOFs) to enhance the interfacial bonding strength between PBAT and PLA. MOF-5 nanoparticles were synthesized by room temperature synthesis and modified with KH-560. PBAT/PLA/KH-560@MOF films were prepared by solvent casting. The microscopic morphology, mechanical properties, thermal properties, hydrophobicity, water vapor transmission rate and antimicrobial properties of the composite films were investigated. The results showed that KH-560@MOF nanoparticles were uniformly dispersed in the polymer matrix of PBAT and PLA, reducing phase interface defects. Mechanical properties of PLA/PBAT improved in the presence of KH-560@MOF. The breaking elongation and tensile strength values were maximized when adding 1 wt% KH-560@MOF. Doping of KH-560@MOF improves hydrophobicity and water vapor transmission rate of films. Zn2+ in MOF-5 imparts antimicrobial properties to the film, showing antimicrobial activity against both Gram-positive and Gram-negative food-borne pathogens (i.e., E. coli and S.aureus). This work enriched the design of compatibilizer for the PLA/PBAT blend and provided a novel approach for expanding the application of MOFs.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"7 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Stereocomplex Crystal Formation in Sheath/Core and Sea/Island Poly(L-lactic acid)/Poly(D-lactic acid) Fibers Prepared through Laser-Heated Melt Electrospinning and Subsequent Annealing Processes 通过激光加热熔融电纺丝和后续退火工艺制备的鞘/芯和海/岛聚（L-乳酸）/聚（D-乳酸）纤维中的立体复合晶体形成

IF 4.6 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127889

Zongzi Hou, Haruki Kobayashi, Katsufumi Tanaka, Wataru Takarada, Takeshi Kikutani, Midori Takasaki

{"title":"Stereocomplex Crystal Formation in Sheath/Core and Sea/Island Poly(L-lactic acid)/Poly(D-lactic acid) Fibers Prepared through Laser-Heated Melt Electrospinning and Subsequent Annealing Processes","authors":"Zongzi Hou, Haruki Kobayashi, Katsufumi Tanaka, Wataru Takarada, Takeshi Kikutani, Midori Takasaki","doi":"10.1016/j.polymer.2024.127889","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127889","url":null,"abstract":"Sheath/core (S/C) and sea/island (S/I) bicomponent fibers consisting of poly(L-lactic acid) (PLLA) as the sheath or sea component and poly(D-lactic acid) (PDLA) as the core or island component were fabricated using a bicomponent melt-spinning process. The obtained fibers were then subjected to laser-heated melt electrospinning (LES) using a rotating collector. The molecular orientation of the LES fibers increased as the fiber diameter decreased because of the increase in take-up velocity. Wide-angle X-ray diffraction revealed that the as-spun fibers were in an amorphous state. The differential scanning calorimetry (DSC) measurements showed a cold crystallization peak, followed by melting peaks of the homocrystal (HC) and stereocomplex crystal (SC), with the SC peak being more prominent for the S/I fibers. It is speculated that the distance required for the interdiffusion of PLLA and PDLA molecular chains in the fiber cross section substantially affected the transition from HC to SC during DSC measurements. The S/C and S/I fibers annealed at 120 °C after the LES were composed of HC. However, after annealing at 190 °C, which is above the melting temperature of HC, the S/C fibers fused, whereas the S/I fibers remained intact, resulting in well-separated ultrafine fibers composed of highly oriented SC.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"81 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Grating Harmony of Orderly-Banded Spherulites of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Tunable Structures 具有可调谐结构的聚(3-羟基丁酸-3-羟基戊酸)有序带状球形体的光栅和谐性

IF 4.6 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127892

Selvaraj Nagarajan, Rahmyanti Widyantari, Wei-Tsung Chuang, Jhih-Min Lin, Eamor M. Woo

{"title":"Grating Harmony of Orderly-Banded Spherulites of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Tunable Structures","authors":"Selvaraj Nagarajan, Rahmyanti Widyantari, Wei-Tsung Chuang, Jhih-Min Lin, Eamor M. Woo","doi":"10.1016/j.polymer.2024.127892","DOIUrl":"https://doi.org/10.1016/j.polymer.2024.127892","url":null,"abstract":"A detailed investigation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blended with poly(vinyl phenol) (PVPh) at a 90/10 weight ratio reveals the significant impact of PVPh on crystallization and spherulite morphology. Because PVPh remains in a rigid, glassy state during PHBV crystallization, it restricts molecular movement, leading to a more controlled and organized morphology of the PHBV lamellae. Advanced microscopic analysis highlights the morphological sensitivity to crystallization conditions, with SEM images showing cracks and diverse lamellae orientations. Etching and fracturing expose the interior 3D lamellae architecture, revealing distinct ridge and valley regions where vertically oriented lamellae beneath ridges transition to horizontal lamellae in valleys, resulting in double ring-banded spherulites. Advanced synchrotron-radiation microbeam X-ray techniques provide additional insights into the polymorphic forms and self-assembly behavior of lamellae. The investigation also examines order-induced photonic phenomena by considering that the orderly-banded spherulites can exhibit iridescence. This comprehensive study enhances our understanding of PHBV crystal assembly, underscoring the sophistication of polymer self-assembly at the microscopic level.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"25 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Chiral structures of polymers influence their resistance to protein adsorption and bacterial adhesion as investigated by quartz crystal microbalance with dissipation 利用石英晶体微天平研究聚合物手性结构对蛋白质吸附和细菌粘附阻力的影响

IF 4.1 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127890

Jiankang Sun , Jianhui Wu , Jingjing Wu , Changdao Mu , Chunhua Wang , Wei Lin

{"title":"Chiral structures of polymers influence their resistance to protein adsorption and bacterial adhesion as investigated by quartz crystal microbalance with dissipation","authors":"Jiankang Sun , Jianhui Wu , Jingjing Wu , Changdao Mu , Chunhua Wang , Wei Lin","doi":"10.1016/j.polymer.2024.127890","DOIUrl":"10.1016/j.polymer.2024.127890","url":null,"abstract":"<div><div>Chiral stereochemical strategy for antimicrobial adhesion is a newly-developed method with growing interest. However, the effect of chiral structures on the anti-biofouling property is still unclear. Herein, we employed quartz crystal microbalance with dissipation (QCM-D) to study the ability of two polyurethanes modified by distinct isomers of chiral borneol compounds to inhibit proteins adsorption and bacteria adhesion. Two types of polyurethanes containing endo-L-borneol-based side chains (PLBA) or exo-iso-borneol-based side chains (PIBA) were synthesized through a thiol-ene ‘click’ reaction and polyaddition polymerization. The structure, chirality and surface wettability of the polyurethanes (PLBA-PU/PIBA-PU) were investigated, confirming the intact molecular chirality of borneol and the improved surface hydrophobicity of the polyurethanes after introducing borneol-based side chains. We monitored the protein adsorption and bacteria adhesion on these polyurethane surfaces by QCM-D. The PLBA-PU and PIBA-PU surfaces exhibit enhanced protein resistance and antimicrobial adhesion properties. Moreover, significant difference in anti-biofouling performance was found by QCM-D between PLBA-PU and PIBA-PU, where L-configuration of borneol on the polyurethane surfaces provides enhanced anti-biofouling function compared to exo-iso-borneol.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"316 ","pages":"Article 127890"},"PeriodicalIF":4.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Durable and organic-solvent-free anti-icing coating fabricated from polyacrylate grafted with PDMS 聚丙烯酸酯与 PDMS 接枝制成的不含有机溶剂的耐用防冰涂层

IF 4.6 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127857

Pengfei Li, Jian Yuan, Lidan Lan, Yi Dan, Long Jiang, Yun Huang

引用次数: 0

Effect of self-assembly of nucleator adsorbed at the interface by H-bonding on the crystallization and mechanical behaviors of iPP hybrids 通过 H 键吸附在界面上的成核剂的自组装对 iPP 混合物的结晶和机械行为的影响

IF 4.1 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127893

Wen-yue Zhuo, Jian Wang, Yan-hua Niu, Ya-dong Lv

{"title":"Effect of self-assembly of nucleator adsorbed at the interface by H-bonding on the crystallization and mechanical behaviors of iPP hybrids","authors":"Wen-yue Zhuo, Jian Wang, Yan-hua Niu, Ya-dong Lv","doi":"10.1016/j.polymer.2024.127893","DOIUrl":"10.1016/j.polymer.2024.127893","url":null,"abstract":"<div><div>DCHT (N, N-dicyclohexylterephthalamide) as a common type of β-nucleator could self-assemble into various morphologies in iPP (isotactic polypropylene) matrix and further affect its crystallization behaviors. In this study, a third component of PA11 (polyamide 11) was intentionally introduced into iPP hybrids to tune the adsorption and assembly of DCHT by forming hydrogen bonds, whose effects on the crystallization and mechanical properties of iPP hybrids at different processing temperature (Tf) were investigated in detail. It is observed that DCHT could form flower-like crystals at higher Tf, while it tends to aggregate and form rod-like crystal with high concentration in the hybrids. DSC results show that DCHT could lost its nucleation ability at low concentration. With the increase of DCHT concentration, the residual DCHT in the matrix could induce the crystallization of iPP as β-nucleation site. A core-shell structure was observed for the first time in which the shell as the interface layer is formed by DCHT assembly and iPP crystal. It is a key to greatly improve the toughness of the hybrids and the strength of the interface layer between PA11 and iPP by self-assembling and crystallizing at the interface. By changing the PA11 hard core to the TPU (Thermoplastic polyurethanes) soft core at a higher Tf of 280 °C, the impact strength of iPP/20TPU/0.5DCHT hybrid reaches 13 kJ/m2, which is 4 times of pure iPP, while the tensile strength only slightly decreases. This study provided a new strategy to optimize the mechanical properties of iPP by forming the core-shell structure and meanwhile tunning the assembly of nucleator at the interface.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"316 ","pages":"Article 127893"},"PeriodicalIF":4.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

“Brick-mud” porous impregnated-segregated polymer composites with excellent electrical insulation, high thermal conductivity, and good electromagnetic interference shielding 具有优异电绝缘性、高导热性和良好电磁干扰屏蔽性能的 "砖泥 "多孔浸渍集料聚合物复合材料

IF 4.1 2区化学

Polymer Pub Date : 2024-11-28 DOI: 10.1016/j.polymer.2024.127891

Hongxin Guo , Huiyao Feng , Tong Liu, Tairong Kuang

{"title":"“Brick-mud” porous impregnated-segregated polymer composites with excellent electrical insulation, high thermal conductivity, and good electromagnetic interference shielding","authors":"Hongxin Guo , Huiyao Feng , Tong Liu, Tairong Kuang","doi":"10.1016/j.polymer.2024.127891","DOIUrl":"10.1016/j.polymer.2024.127891","url":null,"abstract":"<div><div>The advancement of 5G communication systems and modern electronic devices has driven the demand for advanced polymer composites with multifunctional capabilities, including electromagnetic interference (EMI) shielding, thermal conductivity, electrical insulation, and mechanical robustness. However, achieving an optimal combination of these properties in a single polymeric material remains challenging. Here, a novel “brick-mud” porous impregnated-segregated structure was developed to address these challenges. This structure consists of polylactic acid/multi-wall carbon nanotubes (PLA/CNTs) microspheres as the “brick” phase and polybutylene succinate/boron nitride (PBS/BN) as the “mud” phase. The interconnected porous PLA/CNTs microspheres were prepared via an emulsion method, which allowed effective infiltration by the PBS/BN matrix during melt blending, resulting in a robust interface. The ratio of “mud” to “brick” was systematically varied, facilitating regulation of the balance between the different multifunctional properties. The resulting composites demonstrated excellent performance, with EMI shielding effectiveness up to ∼41.1 dB, thermal conductivity up to ∼1.37 W m⁻1 K⁻1, volume resistivity exceeding 101⁵ Ω·cm, and mechanical strength as high as ∼54.2 MPa, depending on the composition. Such performance characteristics make these composites particularly suitable for use as casings for 5G communication equipment, where efficient thermal management, EMI shielding, and structural durability are critical.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"316 ","pages":"Article 127891"},"PeriodicalIF":4.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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