Macromolecular Materials and Engineering最新文献_第3页

Preparation of CuO/Al2O3 and NiO Loaded Form-Stabilized Composite Phase Change Materials with Improved Thermal Properties and Comparison of their Thermal Energy Storage Characteristics

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2025-01-02 DOI: 10.1002/mame.202400379

Beyza Nur KÜÇÜKER, Hatice Hande MERT

{"title":"Preparation of CuO/Al2O3 and NiO Loaded Form-Stabilized Composite Phase Change Materials with Improved Thermal Properties and Comparison of their Thermal Energy Storage Characteristics","authors":"Beyza Nur KÜÇÜKER, Hatice Hande MERT","doi":"10.1002/mame.202400379","DOIUrl":"https://doi.org/10.1002/mame.202400379","url":null,"abstract":"Alumina supported copper oxide (CuO/Al2O3) and Nickel Oxide (NiO) loaded polymer composite matrices supported n-hexadecane (HD) based composite phase change materials (PCMs) are prepared and characterized. The polymer composites assigned as supporting matrices for shape-stabilization of PCM are synthesized by emulsion-templating approach, and the composite PCMs are prepared by impregnation of HD into polymer composite matrices. The effect of CuO/Al2O3 and NiO particles of different sizes used as heat transfer promoters in the supporting matrices, on the morphological properties, thermal stabilities, and latent heat storage characteristics (LHS) of the composite PCMs are evaluated using different characterization methods. The melting temperature of the obtained composite PCMs is found to be ≈18 °C and the latent heat of melting values varied in the range of 95.0−114.5 J g−1. The heat transfer properties of the composite PCMs are investigated by performing a T-History test for obtaining heat storage and release curves. The composite PCMs with NiO loaded supporting matrices are exhibited higher thermal stability and heat storage capacity in addition to enhanced thermal conduction properties than the CuO/Al2O3 included composite PCMs. According to the results, it is revealed that shape-stabilized, thermally enhanced composite PCMs are remarkable energy storage materials with the potential for use in low-temperature thermal energy storage systems.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanofibrous Biomaterial Containing Raw-Propolis Particles Encapsulated by PLA/PBS for Wound Dressing Application

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2025-01-02 DOI: 10.1002/mame.202400321

Ecem Özdilek, Sema Samatya Yilmaz, Hüseyin Uzuner, Ayse Aytac

{"title":"Nanofibrous Biomaterial Containing Raw-Propolis Particles Encapsulated by PLA/PBS for Wound Dressing Application","authors":"Ecem Özdilek, Sema Samatya Yilmaz, Hüseyin Uzuner, Ayse Aytac","doi":"10.1002/mame.202400321","DOIUrl":"https://doi.org/10.1002/mame.202400321","url":null,"abstract":"The hollow nanofibrous materials were obtained by successfully encapsulating different rate raw-propolis particles (5%, 10%, and 15%) with hydrophobic polylactic acid/polybutylene succinate (PLA/PBS, 93/7, w/w) blend. No purification process such as extraction was applied to raw propolis and propolis was used as raw. High liquid absorbing capacity values between 400 and 600% were observed owing to the hollow core of the nanofiber. Scanning electron microscopy (SEM) surface images of hollow nanofibers became transparent, and it was seen that the fiber diameters were thickened. The tensile stress of 5% propolis-encapsulated biomaterial exhibited the highest value of 1.25 MPa. High antibacterial activity was observed especially against Staphylococcus aureus (S. aureus) at the end of the 24th and 48th h with the dispersion of raw-propolis particles in the core of propolis-encapsulated all fibrous materials. However, it was seen that the use of propolis in its raw form caused the emergence of toxic effects. It was reported that hollow biomaterials containing raw-propolis particles encapsulated by PLA/PBS could not be used as wound dressings due to insufficient fibroblast cell viability. So, it was suggested that pure hollow PLA/PBS fibrous mats could be used as skin tissue scaffolds.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400321","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design Optimization of Pressurized Gyration Technology: Orifice Height Level Effects on Production Rate and Fiber Morphology

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2025-01-02 DOI: 10.1002/mame.202400317

Ahmed Alneyadi, Angelo Delbusso, Anthony Harker, Mohan Edirisinghe

{"title":"Design Optimization of Pressurized Gyration Technology: Orifice Height Level Effects on Production Rate and Fiber Morphology","authors":"Ahmed Alneyadi, Angelo Delbusso, Anthony Harker, Mohan Edirisinghe","doi":"10.1002/mame.202400317","DOIUrl":"https://doi.org/10.1002/mame.202400317","url":null,"abstract":"Electrospinning and pressurized gyration are two widely adopted methods for polymeric fiber production, valued for their simplicity, versatility, and relatively low environmental impact. Despite its advantages, electrospinning has notable limitations, including low production efficiency and significant safety concerns. Pressurized gyration, however, offers greater productivity and a safer, more sustainable process, making it an excellent candidate for industrial scaling. To fully realize this potential, optimizing the pressurized gyration process is essential for enhancing efficiency and achieving sustainable large-scale fiber production. In this study, the effects of vessel orifice height on the production rate and fiber morphology in pressurized gyration are explored. A series of experiments is conducted using a 15 wt.% polycaprolactone (PCL) solution, with vessels of identical diameter but differing orifice heights 7.5, 15, and 22.5 mm tested under pressures of 0, 0.1, 0.2, and 0.3 MPa, all at a constant rotational speed of 13 000 rpm. The 7.5 mm orifice height demonstrates the highest production rate under pressure while increasing orifice height led to finer fiber diameters, better alignment, and smaller beads. These findings underscore the importance of optimizing vessel design, along with process and solution parameters, for scaling up pressurized gyration fiber manufacturing to meet industrial demands.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 3","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400317","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Femtosecond Laser Transmission Joining of Fused Silica and Polymethyl Methacrylate

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-23 DOI: 10.1002/mame.202400354

Felice Alberto Sfregola, Raffaele De Palo, Caterina Gaudiuso, Pietro Patimisco, Antonio Ancona, Annalisa Volpe

{"title":"Femtosecond Laser Transmission Joining of Fused Silica and Polymethyl Methacrylate","authors":"Felice Alberto Sfregola, Raffaele De Palo, Caterina Gaudiuso, Pietro Patimisco, Antonio Ancona, Annalisa Volpe","doi":"10.1002/mame.202400354","DOIUrl":"https://doi.org/10.1002/mame.202400354","url":null,"abstract":"In this study, polymethyl methacrylate (PMMA) is joined with fused silica using pulsed femtosecond laser transmission micro-welding. This technique enables the welding of transparent materials to each other without the need for intermediate opaque layers, through localized energy deposition. The laser parameters – peak fluence, scanning speed, and hatch distance – are systematically optimized to maximize joint shear strength. The ATR-FTIR spectroscopic analysis has proven that mechanical interlocking is the primary mechanism of joint formation between the two materials. An analytical model based on heat accumulation is developed to describe the joining process, with a good predictive quality confirmed by comparison with the experimental results. This joining approach is applied to seal a hybrid PMMA-fused silica microfluidic chip. The device has successfully passed a static leakage test by withstanding pressures up to the full-scale value of the employed microfluidic pump at 2 bar, demonstrating the effectiveness of femtosecond laser transmission welding for fabricating robust and reliable joints in hybrid microfluidic devices.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrospun Thermoplastic Polyurethane Fibrous Membrane Decorated with MXene/Carbon Black for Dual-Mode Human Movement Monitoring and Energy Harvesting

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-19 DOI: 10.1002/mame.202400357

Qingsen Gao, Xin Wang, Dirk W. Schubert, Xianhu Liu

{"title":"Electrospun Thermoplastic Polyurethane Fibrous Membrane Decorated with MXene/Carbon Black for Dual-Mode Human Movement Monitoring and Energy Harvesting","authors":"Qingsen Gao, Xin Wang, Dirk W. Schubert, Xianhu Liu","doi":"10.1002/mame.202400357","DOIUrl":"https://doi.org/10.1002/mame.202400357","url":null,"abstract":"Conductive fiber membranes have received widespread attention due to their excellent physical and chemical properties. However, developing conductive fiber membranes for both strain sensing and energy harvesting remains a challenge. Herein, a novel thermoplastic polyurethane (TPU)/polydopamine (PDA)/MXene/carbon black (CB) (TPMC) conductive fibrous membrane is developed by combining electrospinning and layer-by-layer dip-coating processes. The TPMC fibrous membrane can be used as a component of strain sensors and triboelectric nanogenerators (TENG) to achieve dual-mode human motion detection and energy harvesting. The strain sensor boasts a wide operating range (0.5%-195%), excellent sensitivity (with a gauge factor (GF) up to 54 at 50% strain and maximum GF of 6.5×104), fast response (80 ms) and excellent cycle durability (over 10 000 cycles), making it possible to detect slight or heavy human activities under various conditions effectively. Additionally, a single-electrode TENG utilizing the TPMC membrane achieves an output voltage of 115 V, a current of 0.8 µA, and a power density of 68 mW m⁻2, also serving as a self-powered sensor for various movements. The excellent dual-mode sensing and energy harvesting properties make it promising for future high-performance wearable devices.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive Manufacturing of Watertight ABS Parts and Its Use for Chemical Metal Plating

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-18 DOI: 10.1002/mame.202400367

Philipp Zimmermann, Christoph Schammel, Jürgen Nagel

{"title":"Additive Manufacturing of Watertight ABS Parts and Its Use for Chemical Metal Plating","authors":"Philipp Zimmermann, Christoph Schammel, Jürgen Nagel","doi":"10.1002/mame.202400367","DOIUrl":"https://doi.org/10.1002/mame.202400367","url":null,"abstract":"One of the most frequently used polymers in the galvanic industry as well as for Fused Filament Fabrication (FFF) is the terpolymer of acrylonitrile butadiene styrene (ABS). Its surface is etched in chromosulfuric acid to enable the chemical deposition of a metal. The use of chromium (Cr)(VI) compounds is restricted in the European Union (EU) since 2017. A new plating process is proposed here that does not rely on etching. Instead, double bonds on the ABS surface are converted to epoxides, followed by grafting of a polyethylenimine (PEI) to the surface. The so modified plastic is an ideal starting point for metal plating. Printing often leads to the formation of voids between strands and layers, which hinders subsequent wet processing. The plating process introduced here requires high demands on the water tightness of parts. The proposed printing procedure reduces the degree of penetration of water from 50% to less than 0.1% at 2 bar water pressure. The combination of the new printing procedure with the new plating process results in the deposition of industrial relevant nickel (Ni) layers. The cross-hatch test followed by a peel test exhibits values of zero, pointing to the high adhesion of Ni to ABS.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 4","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400367","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and Evaluation of Poly(Lactic-Co-Glycolic Acid) Encapsulated Betulinic Acid Nanocarrier for Improved Anti-Tumor Efficacy

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-17 DOI: 10.1002/mame.202400283

Cyril Tlou Selepe, Khanyisile Sheer Dhlamini, Lesego Tshweu, Lusisizwe Kwezi, Bathabile Ramalapa, Suprakas Sinha Ray

{"title":"Development and Evaluation of Poly(Lactic-Co-Glycolic Acid) Encapsulated Betulinic Acid Nanocarrier for Improved Anti-Tumor Efficacy","authors":"Cyril Tlou Selepe, Khanyisile Sheer Dhlamini, Lesego Tshweu, Lusisizwe Kwezi, Bathabile Ramalapa, Suprakas Sinha Ray","doi":"10.1002/mame.202400283","DOIUrl":"https://doi.org/10.1002/mame.202400283","url":null,"abstract":"Betulinic acid (BA) is a promising natural anti-tumor agent renowned for its activity against various tumor cell types. Despite its favorable profile of low cytotoxicity to normal cells, BA's inherent hydrophobic nature and relatively short systematic half-life impose hurdles for clinical application. This study introduces a strategy to surmount these obstacles by developing a drug delivery system employing poly(lactic-co-glycolic acid) (PLGA)-encapsulated BA nanoparticles (PLGA-BA NPs). Rigorous characterization techniques such as dynamic light scattering (DLS), x-ray diffraction (XRD), and scanning electron microscopy (SEM) analyses are employed to confirm the integrity of the drug within the nanocarriers. The PLGA-BA NPs demonstrated a mean particle size of 196 ± 6.80 nm. XRD analysis demonstrated the amorphous state of the PLGA-BA formulation, a characteristic vital for sustained drug release and enhanced bioavailability. The PLGA-BA NPs exhibited spherical morphology with encapsulation and loading efficiency of 83 ± 9.24% and 7.0 ± 0.4%, respectively, highlighting efficient encapsulation of the drug within the PLGA NPs. In vitro, cytotoxicity assessments demonstrated enhanced anti-proliferative efficacy against breast and lung tumor cells when utilizing PLGA-BA NPs in comparison to free BA. This research underlines the potential of employing the developed PLGA-based nanocarrier to optimize the therapeutic efficacy of BA.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400283","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead: Macromol. Mater. Eng. 12/2024 报头:絮凝。板牙。Eng。12/2024

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-16 DOI: 10.1002/mame.202470024

引用次数: 0

Speckle Pattern Analysis of PVK:rGO Composite Based Memristor Device PVK:rGO复合材料记忆电阻器件的散斑模式分析

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-16 DOI: 10.1002/mame.202470023

Ramin Jamali, Madeh Sajjadi, Babak Taherkhani, Davood Abbaszadeh, Ali-Reza Moradi

引用次数: 0

Mechanical and Morphological Perspectives on PLA-Based Thermoplastic Vulcanizates (TPVs): A Brief Review

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-12-13 DOI: 10.1002/mame.202400209

Zahra Shahroodi, Vahid Momeni, Ali Moshkriz, Nariman Rajabifar, Reza Darvishi

{"title":"Mechanical and Morphological Perspectives on PLA-Based Thermoplastic Vulcanizates (TPVs): A Brief Review","authors":"Zahra Shahroodi, Vahid Momeni, Ali Moshkriz, Nariman Rajabifar, Reza Darvishi","doi":"10.1002/mame.202400209","DOIUrl":"https://doi.org/10.1002/mame.202400209","url":null,"abstract":"Poly(lactic acid) (PLA) brings intriguing prospects to the realm of biodegradable polymers through environmental sustainability, processing, and affordability. However, the widespread use of PLA remains full of challenges mostly because of its brittleness and poor mechanical properties. This review highlighted recent studies on improving PLA brittleness by adding different elastomeric systems and using different crosslinking systems in order to improve the mechanical properties, enhance the interfacial interactions, and stabilize the micromorphology of PLA systems as an effective, promising strategy to mitigate intrinsic PLA problems. Looking at the different microstructures required to achieve better performance, an insightful discussion on the developed morphology between PLA and high-elastic materials is featured along with reviewing primary mechanical concepts. It concludes with an outlook for static and dynamic vulcanization systems with a perspective of biodegradable PLA and draws attention to the new possibilities that crosslinked PLA can offer.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 2","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0