Macromolecular Materials and Engineering最新文献_第9页

Polymer Science in South Africa 南非的聚合物科学

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-14 DOI: 10.1002/mame.202470015

Rueben Pfukwa, Suprakas Sinha Ray

引用次数: 0

Masthead: Macromol. Mater. Eng. 8/2024 刊头：Macromol.Mater.Eng.8/2024

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-14 DOI: 10.1002/mame.202470016

引用次数: 0

Anti-Inflammatory Drugs-Modified Poly(2-Hydroxyethyl Methacrylate) Particles as Anticancer Drug Carriers 作为抗癌药物载体的抗炎药物改性聚（2-羟乙基甲基丙烯酸酯）颗粒

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-13 DOI: 10.1002/mame.202400147

Shima Ghaffari, Marzieh Golshan, Kiyumars Jalili, Mehdi Salami-Kalajahi

{"title":"Anti-Inflammatory Drugs-Modified Poly(2-Hydroxyethyl Methacrylate) Particles as Anticancer Drug Carriers","authors":"Shima Ghaffari, Marzieh Golshan, Kiyumars Jalili, Mehdi Salami-Kalajahi","doi":"10.1002/mame.202400147","DOIUrl":"10.1002/mame.202400147","url":null,"abstract":"In this work, 2-hydroxyethyl methacrylate (HEMA) is modified by ibuprofen and diclofenac as anti-inflammatory drugs to synthesize ibuprofen-HEMA and diclofenac-HEMA monomers. Then, poly(ibuprofen-HEMA-co-HEMA) (PIHH), poly(diclofenac-HEMA-co-HEMA) (PDHH), and poly(2-hydroxyethyl methacrylate) (PHEMA) particles are prepared by distillation precipitation polymerization. The morphology and size of the particles are investigated by dynamic light scattering (DLS) and field emission scanning electron microscopy (FE-SEM). It is observed that all particles are spherical and with sizes of 298.3 nm for PHEMA, 178.8 nm for PDHH, and 85.2 nm for PIHH, respectively. Doxorubicin drug is loaded into the prepared particles and the drug release behavior is investigated for all the particles at two different pH values of 7.4 and 5.3. The release of the drug in acidic pH is higher due to the better solubility of DOX in acidic environment and the faster release of DOX molecules from nanocarriers. The toxicity of particles is also investigated and it is observed that by loading the drug into the PHEMA particles, the release of the drug causes fewer toxic effects than in the free state (drug without any nanocarrier), and the presence of ibuprofen and diclofenac in the particles, that is, PIHH and PDHH, led to a significant reduction in the cytotoxicity.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400147","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197213","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

Combining Injection Molding and 3D Printing for Tailoring Polymer Material Properties 结合注塑成型和 3D 打印技术定制聚合物材料性能

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-09 DOI: 10.1002/mame.202400210

Michelle Vigogne, Carsten Zschech, Markus Stommel, Julian Thiele, Ines Kühnert

{"title":"Combining Injection Molding and 3D Printing for Tailoring Polymer Material Properties","authors":"Michelle Vigogne, Carsten Zschech, Markus Stommel, Julian Thiele, Ines Kühnert","doi":"10.1002/mame.202400210","DOIUrl":"10.1002/mame.202400210","url":null,"abstract":"Modern polymer-based technical components not only have to fulfill demanding mechanical-structural properties but need to integrate different functions to yield hybrid systems for complex operations. Typically, neither materials nor processing technologies are fully compatible with each other. The aim of the work is to combine the advantages of seemingly incompatible manufacturing processes such as high-volume injection molding (IM) and precision additive manufacturing to produce functional and customized hybrid materials. IM is widely used for polymer processing but stands against high investment costs for tailor-made molds with high-resolution features. They focus on overprinting of injection-molded parts made of thermoplastic polyurethane (TPU) with microstructures via projection-microstereolithography (PµSL) to generate hybrid polymer materials with spatially tailored stiffness, enabling selective reinforcement, resulting in an E modulus increase of 195% compared to mere IM-processed TPU. With that, the hybridization of processing methods is showcased to extend the product properties of polymer materials obtained via either IM or PµSL printing that have, prospectively, a maximum degree of individualization as well as a multitude of structural and functional features at the same time. To achieve optimum interfacial adhesion, the influence of surface roughness is studied, and reinforcement effects of different overprinted microstructure types are evaluated.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 11","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141921714","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

Chitosan/Silica Hybrid Nanogels by Inverse Nanoemulsion for Encapsulating Hydrophilic Substances 利用反相纳米乳化技术封装亲水性物质的壳聚糖/二氧化硅杂化纳米凝胶

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-05 DOI: 10.1002/mame.202400151

Asmaa M. Elzayat, Katharina Landfester, Rafael Muñoz-Espí

{"title":"Chitosan/Silica Hybrid Nanogels by Inverse Nanoemulsion for Encapsulating Hydrophilic Substances","authors":"Asmaa M. Elzayat, Katharina Landfester, Rafael Muñoz-Espí","doi":"10.1002/mame.202400151","DOIUrl":"10.1002/mame.202400151","url":null,"abstract":"A strategy for the preparation of a hybrid chitosan/silica nanohydrogel is reported, which combines the gelation of chitosan in a nanoemulsion system with a sol–gel process to produce silica. Chitosan is used as a biopolymer matrix, while silica acts as a structuring additive. Hydrogel nanocapsules are obtained through the ionic interaction of the cationic groups of chitosan with the anionic groups of sodium triphosphate (STP), which is used as a physical cross-linker. Two alternative preparation methods are compared in this work: in the first one, STP is added to the continuous phase of an inverse emulsion of chitosan; in the second one, the fusion of droplets of two emulsions containing separate chitosan and STP takes place. The size of the obtained nanocapsules ranges from 50 to 200 nm. The efficiency of the formed hydrogel for entrapping a hydrophilic model substance (erioglaucine disodium salt) is investigated for the two systems by studying the release in a neutral aqueous medium. The results indicate that the hydrophilic cargo is efficiently encapsulated by both preparation methods, although the droplet-fusion method yields more stable suspensions. As a general observation, the release behavior of erioglaucine is systematically retarded when silica is present in the systems.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"310 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141945365","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

3D Printed PLA Porous Scaffolds with Engineered Cell Size and Porosity Promote the Effectiveness of the Kelvin Model for Bone Tissue Engineering 三维打印聚乳酸多孔支架可设计细胞大小和孔隙率，促进开尔文骨组织工程模型的有效性

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-05 DOI: 10.1002/mame.202400212

Arman Barzgar Torghabeh, Iman Barzgar Torghabeh, Morteza Kafaee Razavi

{"title":"3D Printed PLA Porous Scaffolds with Engineered Cell Size and Porosity Promote the Effectiveness of the Kelvin Model for Bone Tissue Engineering","authors":"Arman Barzgar Torghabeh, Iman Barzgar Torghabeh, Morteza Kafaee Razavi","doi":"10.1002/mame.202400212","DOIUrl":"10.1002/mame.202400212","url":null,"abstract":"In this study, the aim is to investigate the effect of engineering the cell size and porosity of 3D-printed poly lactic acid (PLA) porous scaffolds from the Kelvin model for bone tissue engineering applications. The Kelvin model is used as a bone tissue scaffold with different cell sizes and porosities. PLA, as a biodegradable and biocompatible polymer, is used to fabricate these scaffolds using the FDM technique. A compression test is used to evaluate the mechanical properties of scaffolds. The MTT assay has been used to investigate cell viability. For osteogenic differentiation studies, ALP activity and ARS assays are used. Increasing the porosity reduces the mechanical properties of the scaffold. While increasing the cell size at constant porosity increases the Young's modulus and yield stress in the samples, it is also observed that, in high porosities, the increase in cell size weakens the mechanical properties. Also, Kelvin model scaffolds help the proliferation and osteogenic differentiation of cells and have no toxic effect. It is demonstrated that this approach promotes the effectiveness of the Kelvin architecture for bone tissue engineering. As a result, designing the most suitable model based on cell size and porosity for the treatment process in the targeted area could be promising.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 12","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400212","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141945346","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

Green Electrospinning of Highly Concentrated Polyurethane Suspensions in Water: From the Rheology to the Fiber Morphology 水中高浓度聚氨酯悬浮液的绿色电纺丝：从流变学到纤维形态学

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-08-05 DOI: 10.1002/mame.202400157

Bryan Gross, Guy Schlatter, Pascal Hébraud, Flavien Mouillard, Lotfi Chehma, Anne Hébraud, Emeline Lobry

{"title":"Green Electrospinning of Highly Concentrated Polyurethane Suspensions in Water: From the Rheology to the Fiber Morphology","authors":"Bryan Gross, Guy Schlatter, Pascal Hébraud, Flavien Mouillard, Lotfi Chehma, Anne Hébraud, Emeline Lobry","doi":"10.1002/mame.202400157","DOIUrl":"10.1002/mame.202400157","url":null,"abstract":"Suspension electrospinning allows the environmental-friendly fabrication of nano-micro-fibrous membranes since it is based on the processing of an aqueous particle suspension in which a hydrosoluble template polymer is added to insure the formation of a continuous fiber. Here, the case of polyurethane (PU) aqueous suspensions formulated with poly(ethylene oxide) (PEO) as the template polymer is studied. The effect of several parameters (particle size, PU/PEO ratio, PEO molar mass, and PEO concentration in the continuous phase) on particle-particle and particle-template polymer interactions that influence the rheological properties of the formulation and finally the electrospinning and the fiber morphology, is studied. The goal is to process a formulation with the highest particle content as possible. Thanks to a deep rheological investigation and the study of interactions and suspension morphology by zeta potential and diffusing wave spectroscopy, it is shown that regular fibers are efficiently produced when small particles are electrospun under favorable particle-template polymer interactions and without screening the electrostatic repulsion between particles. Finally, a fibrous membrane is obtained from a formulation with a PU/PEO weight ratio equal to 50 under very stable and efficient production conditions.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 12","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400157","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141945345","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

Unveiling the Hidden Networks: AFM Insights into Pre-Vulcanized Hevea Latex and Its Profound Impact on Latex Film Mechanical Properties 揭开隐藏网络的面纱：AFM 透视预硫化海维亚胶乳及其对胶乳薄膜机械性能的深远影响

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-07-30 DOI: 10.1002/mame.202400211

Narueporn Payungwong, Ken Nakajima, Chee-Cheong Ho, Jitladda Sakdapipanich

{"title":"Unveiling the Hidden Networks: AFM Insights into Pre-Vulcanized Hevea Latex and Its Profound Impact on Latex Film Mechanical Properties","authors":"Narueporn Payungwong, Ken Nakajima, Chee-Cheong Ho, Jitladda Sakdapipanich","doi":"10.1002/mame.202400211","DOIUrl":"10.1002/mame.202400211","url":null,"abstract":"Natural rubber (NR) films with different natural networks—concentrated NR (CNR), deproteinized NR (DPNR), and small rubber particles (SRP)—are investigated to explore the relationship between network structure and film properties using atomic force microscopy (AFM) in PeakForce Quantitative Nanomechanics (QNM) mode. Nitrogen content, gel content, and particle size distribution analyses reveal distinct network topologies in each latex type. Mechanical testing shows variations in tensile strength and crosslink density. AFM analysis provides insights into the crosslink network structures within the pre-vulcanized latex film. It is found that DPNR and CNR films have a uniform distribution of crosslink networks, with DPNR exhibiting higher Young's modulus values. In contrast, SRP shows varying Young's modulus values, suggesting poor coalescence arising from a harder particle surface and a softer rubber core in an inhomogeneous network structure intrinsic to the non-rubber components (NRCs) make-up of SRP latex. This study highlights the pivotal role of natural network structures formed by NRCs in determining the ultimate properties of latex films, which has significant implications for the rubber industry, particularly in the production of latex-dipped products, medical devices, and bioengineering applications.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 12","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400211","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867293","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

Thermo-Compressed Films of Poly(butylene succinate) Reinforced with Cellulose Fibers Obtained from Rice Straw by Green Extraction Methods 用绿色提取方法从稻草中提取纤维素纤维增强聚丁二酸丁二醇酯的热压薄膜

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-07-26 DOI: 10.1002/mame.202400094

Carmen Olivas-Alonso, Pedro A. V. Freitas, Sergio Torres-Giner, Amparo Chiralt

{"title":"Thermo-Compressed Films of Poly(butylene succinate) Reinforced with Cellulose Fibers Obtained from Rice Straw by Green Extraction Methods","authors":"Carmen Olivas-Alonso, Pedro A. V. Freitas, Sergio Torres-Giner, Amparo Chiralt","doi":"10.1002/mame.202400094","DOIUrl":"10.1002/mame.202400094","url":null,"abstract":"In this study, two green extraction methods are explored to valorize rice straw into cellulose fibers (CFs), namely subcritical water extraction (SWE) and combined ultrasound-heating treatment (USHT). The resultant fibers are, thereafter, successfully pretreated with (3-glycidyloxypropyl) trimethoxysilane (GPS) and incorporated at 3% wt into poly(butylene succinate) (PBS) by melt-mixing. The green composites are shaped into films by thermo-compression and characterized in terms of their performance for food packaging applications. The chemical analysis of the fibers reveals that SWE is more effective to selectively remove hemicelluloses than USHT, whereas silanization promotes the removal of lignin in both fiber types. Fiber incorporation, more notably in the case of the silanized fibers, restricts the movement of the PBS chains, indicating good interaction with the biopolyester matrix. In particular, CFs act as antinucleating agents in PBS, delaying both glass transition and crystallization from the melt phenomena and hindering crystal formation. Furthermore, the fibers mechanically reinforce and improve the oxygen barrier of the PBS films. The highest barrier enhancement is obtained for the thermo-compressed composite film with silanized fibers obtained by SWE, yielding a decrease of nearly 20% in the permeability to oxygen versus the unfilled PBS film.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 10","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785913","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

Sustainable Silica-Carbon Nanofiber Hybrid Composite Anodes for Lithium-Ion Batteries 用于锂离子电池的可持续二氧化硅-碳纳米纤维混合复合阳极

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-07-26 DOI: 10.1002/mame.202400202

Anne Beaucamp, Amaia Moreno Calvo, Deaglán Bowman, Clotilde Techouyeres, David Mc Nulty, Erlantz Lizundia, Maurice N. Collins

{"title":"Sustainable Silica-Carbon Nanofiber Hybrid Composite Anodes for Lithium-Ion Batteries","authors":"Anne Beaucamp, Amaia Moreno Calvo, Deaglán Bowman, Clotilde Techouyeres, David Mc Nulty, Erlantz Lizundia, Maurice N. Collins","doi":"10.1002/mame.202400202","DOIUrl":"10.1002/mame.202400202","url":null,"abstract":"Alternative anode materials with increased theoretical specific capacities are under scrutinity as a replacement to graphite in lithium-ion batteries (LiBs). Silicon oxides offer increased capacities compared to graphite and do not suffer the same level of material expansion as pure Si. Consequently, they are an intermediate commercial anode material, on the pathway toward pure Si anodes. In this study, stable Silica/carbon (SiO2/C) nanofibers are successfully developed from tetraethyl orthosilicate (TEOS) using poly(vinylpyrrolidone) (PVP). The fibers show excellent stability after calcination, with silica evenly dispersed within the fibers exhibiting a surface area of 327 m2 g−1. This study demonstrates that the electrochemical performance of SiO2/C composite anodes is significantly influenced by the silica content. SiO2/C composites with ≈68 at% SiO2 achieve reversible capacities of 315.6 and 300.9 mAh g−1, after the 2nd, and 800th cycles, respectively, at a specific current of 100 mA g−1, with a remarkable capacity retention of 95.3%. In a second stage, lignin is added as a potential nanostructuring agent. The addition of lignin to the sample reduces the amount of silica without significantly impacting its performance and stability. Tailoring the composition of SiO2/C composite anodes enables stable capacity retention over the course of hundreds of cycles.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":"309 12","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782411","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