Macromolecular Materials and Engineering最新文献_第9页

Investigation of Mechanical Properties of Nonwoven Recycled Cotton/PET Fiber-Reinforced Polyester Hybrid Composites 再生棉/ PET 纤维增强聚酯混合复合材料无纺布机械特性的研究

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-04-03 DOI: 10.1002/mame.202400020

Barshan Dev, Md Ashikur Rahman, Tasnima Tazrin, Md Shahinul Islam, Anirban Datta, Md Zillur Rahman

{"title":"Investigation of Mechanical Properties of Nonwoven Recycled Cotton/PET Fiber-Reinforced Polyester Hybrid Composites","authors":"Barshan Dev, Md Ashikur Rahman, Tasnima Tazrin, Md Shahinul Islam, Anirban Datta, Md Zillur Rahman","doi":"10.1002/mame.202400020","DOIUrl":"10.1002/mame.202400020","url":null,"abstract":"This study investigates the mechanical properties of nonwoven hybrid composites made from recycled cotton/polyethylene terephthalate (PET) with various fiber weight percentages (100/0, 0/100, 75/25, 60/40, 50/70, 60/40, and 25/75). The multilayered nonwoven carded webs are manufactured by the carding machine, while the manual lay-up technique is used to fabricate nonwoven-reinforced composites. Their tensile, flexural, and impact properties and microstructure are then examined. It is found that the tensile modulus and strength increase with the increase in cotton, while the impact strength improves with the increase in PET. The composite of 75% cotton/25% PET offers 92.13% and 67.87% higher tensile modulus and strength than the composite of 25% cotton/75% PET; however, the composite of 25% cotton/75% PET shows 83.09% and 36.22% higher flexural modulus and strength, and 187% more impact strength, respectively, than the composite of 75% cotton/25% PET. The outcome of this study indicates that nonwoven composites with higher contents of recycled cotton can potentially be applied in building and construction sectors where substantial tensile strength is necessary, while composites with comparatively higher contents of recycled PET may be used for various potential applications (e.g., helmets, surfboards, and automotive interiors) where significant flexural and impact strengths are required.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140596706","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

Polylactic-Acid Having MoS2 Particles for Reversible Bilayer Actuators 含有 MoS2 粒子的聚乳酸可逆双层致动器

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-04-02 DOI: 10.1002/mame.202400006

Cristobal Nolasco, Loreto Flores, Humberto Palza

{"title":"Polylactic-Acid Having MoS2 Particles for Reversible Bilayer Actuators","authors":"Cristobal Nolasco, Loreto Flores, Humberto Palza","doi":"10.1002/mame.202400006","DOIUrl":"10.1002/mame.202400006","url":null,"abstract":"Polylactic acid (PLA) composites having 1 wt% of MoS2 particles are prepared by solvent (SM) and melt mixing (MM) methods and their main thermal and mechanical properties are characterized. Coated films from SM samples and 3D-printed filaments from MM samples are tested as active layers in reversible bilayer actuators using a paper sheet as a passive layer. The thermal properties depend on the method used to prepare the composites with MM samples presenting a cold crystallization and a glass transition during the first and second heating and SM samples displaying a standard melt process during the first heating and a small cold crystallization and a glass transition during second heating. Regarding the stiffness, MoS2 increases this property confirming its reinforcement effect. Both kinds of bilayers show reversible actuation under heating either by putting the actuator on a hot plate or by remotely irradiating the sample with near-infrared light (NIR). Under NIR, the 3D printed composites present a much higher actuation. The higher remote actuation in composited bilayers is explained by the NIR light absorption of the MoS2 photoactive particles. This actuator can be used for the design of a smart façade or blind that closes under NIR stimulus.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140596827","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

Renewable Methacrylate Resins for 3D Printing Containing Dynamic Hydroxyester Linkages for Reprocessability 用于 3D 打印的可再生甲基丙烯酸酯树脂，含有可再加工的动态羟基聚酯链节

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-29 DOI: 10.1002/mame.202400036

Kylian Janssen, Geraldine H.M. Schnelting, Mirte Waterink, Jarno Guit, Jerzy Hul, Chongnan Ye, Katja Loos, Vincent S.D. Voet

{"title":"Renewable Methacrylate Resins for 3D Printing Containing Dynamic Hydroxyester Linkages for Reprocessability","authors":"Kylian Janssen, Geraldine H.M. Schnelting, Mirte Waterink, Jarno Guit, Jerzy Hul, Chongnan Ye, Katja Loos, Vincent S.D. Voet","doi":"10.1002/mame.202400036","DOIUrl":"10.1002/mame.202400036","url":null,"abstract":"To facilitate the ongoing transition toward a circular economy, renewable 3D print materials that are both sustainable and competitive must be accessible. However, the growing demand for bio-based thermosetting resins, which are used as ink for vat photopolymerization, gives rise to environmental concerns in terms of plastic waste management. Therefore, photocurable materials that are renewable and recyclable at the same time are needed. In this work, a mechanically robust and reprocessable 3D printed photopolymer is developed from renewable feedstock. Reaction of malic acid with glycidyl methacrylate introduces both methacrylate moieties that can undergo photopolymerization in the 3D printer, and β-hydroxyester linkages that can act as dynamic crosslinks via bond exchange reactions. By combining modified malic acid with reactive diluents, a photoinitiator, and phosphate catalyst, three distinct resins are formulated, resulting in bio-based contents ranging from 43% to 49%. The formulations demonstrate good layer fusion and accurate print quality, while the 3D printed specimens are robust and thermally stable. Notably, the printed object with shortest relaxation time displayed Arrhenius flow behavior with an activation energy of 36.0 kJ mol−1, and its mechanical performance is maintained after being recycled three times. This contributes to the end-of-life perspective of photocurable resins in additive manufacturing.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368173","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 Characterization of Poly(butylene succinate-co-adipate)/Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Cowpea Lignocellulosic Fibers as a Filler via Injection Molding and Extrusion Film-Casting 以豇豆木质纤维素纤维为填充物，通过注塑成型和挤压铸膜技术开发聚（丁二酸丁二醇酯-己二酸丁二醇酯）/聚（3-羟基丁酸酯-3-羟基戊酸酯）并确定其特性

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-28 DOI: 10.1002/mame.202400037

Mondli Abednicko Masanabo, Amélie Tribot, Enni Luoma, Jussi Virkajärvi, Nusrat Sharmin, Morten Sivertsvik, Suprakas Sinha Ray, Janne Keränen, M. Naushad Emmambux

{"title":"Development and Characterization of Poly(butylene succinate-co-adipate)/Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with Cowpea Lignocellulosic Fibers as a Filler via Injection Molding and Extrusion Film-Casting","authors":"Mondli Abednicko Masanabo, Amélie Tribot, Enni Luoma, Jussi Virkajärvi, Nusrat Sharmin, Morten Sivertsvik, Suprakas Sinha Ray, Janne Keränen, M. Naushad Emmambux","doi":"10.1002/mame.202400037","DOIUrl":"10.1002/mame.202400037","url":null,"abstract":"Biodegradable poly(butylene succinate-co-adipate)/Poly(3-hydroxybutyrate-co-3-hydoxyvalerate) (PBSA/PHBV) filled with lignocellulosic sidestream/fibers from cowpea, a neglected and underutilized African crop are produced by injection molding and extrusion film casting. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) suggests that the fibers have more affinity and interfacial interaction with PBSA than PHBV. This is shown by a decrease in dampening of PBSA and an increase in dampening of PHBV with fiber addition. In addition, fiber addition results in more homogeneous crystal morphology of PBSA, while resulting in more heterogeneous crystal morphology of PHBV. The tensile strength of injection molded bio-composites increases with fiber addition due to good interfacial adhesion between the matrix and fibers revealed by scanning electron microscope. In contrast, the tensile strength of bio-composite films decreases with fiber addition due to the high-volume fraction of pores in bio-composite films that act as stress raisers. The stiffness of both injection molded, and bio-composite films increase with fiber addition, as revealed by an increase in Young's modulus and storage modulus, while the tensile strain decreases. In conclusion, low-value cowpea sidestream can be used as a filler to produce injection molded bio-composites and bio-composite films for potential application as rigid and flexible packaging.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322547","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

Magnetochromic Elastomer With Instant Color Changes: A Study of the Influence of Material Composition 瞬间变色的磁致变色弹性体：材料成分的影响研究

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-28 DOI: 10.1002/mame.202400034

Chonghui Li, Frederikke Bahrt Madsen, Lifei Liu, Liyun Yu, Weizhen Zhao, Anne Ladegaard Skov

{"title":"Magnetochromic Elastomer With Instant Color Changes: A Study of the Influence of Material Composition","authors":"Chonghui Li, Frederikke Bahrt Madsen, Lifei Liu, Liyun Yu, Weizhen Zhao, Anne Ladegaard Skov","doi":"10.1002/mame.202400034","DOIUrl":"10.1002/mame.202400034","url":null,"abstract":"Magnetochromic materials change color upon variation in an external magnetic field. A magnetochromic elastomer resulting from the dispersion of magnetic nanoparticles (MNPs) in a liquid and subsequent emulsification in a crosslinkable polydimethylsiloxane (PDMS) is presented. The MNPs form rod-like structures under an external magnetic field, aligning with the field and allowing light to pass through the elastomer. The elastomer thus changes from dark grey to transparent/light grey. Polyethylene glycol 200 (PEG200) is selected as carrier liquid due to the faster movement of MNPs herein than in glycerol, leading to more rapid color changes in the films. The influence of magnetic particle types (commercial, superparamagnetic, and surfactant-coated) on the magnetochromic effects is investigated. All films exhibit optical density changes upon exposure to a magnetic field. Moreover, the films retain their color-changing ability after cycles of 40 times exposure to a magnetic field. Compared to the synthesized superparamagnetic particles, the films with commercial particles display superior optical density change abilities, suggesting commercial MNPs are more suitable for magnetochromic films. The obtained films have promising applications as magnetical field sensors due to their simple storage requirements, rapid response, and excellent repeatability.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322534","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

Polyethyleneimine Controlled Impregnation of Silver Nanowires on Electrospun Ceramic Sponges 聚乙烯亚胺受控浸渍电纺陶瓷海绵上的银纳米线

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-28 DOI: 10.1002/mame.202400017

Dan Fang, Yi-Tao Liu, Bin Ding, Andreas Greiner

引用次数: 0

Morphological Characteristics, Properties, and Applications of Polylactide/Poly(ε-caprolactone) Blends and Their Composites—A Review 聚乳酸/聚（ε-己内酯）共混物及其复合材料的形态特征、性能和应用--综述

IF 4.2 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-23 DOI: 10.1002/mame.202400056

Karabo Innocent Matumba, Teboho Clement Mokhena, Vincent Ojijo, Emmanuel Rotimi Sadiku, Suprakas Sinha Ray

{"title":"Morphological Characteristics, Properties, and Applications of Polylactide/Poly(ε-caprolactone) Blends and Their Composites—A Review","authors":"Karabo Innocent Matumba, Teboho Clement Mokhena, Vincent Ojijo, Emmanuel Rotimi Sadiku, Suprakas Sinha Ray","doi":"10.1002/mame.202400056","DOIUrl":"10.1002/mame.202400056","url":null,"abstract":"Over the past years, poly(lactic acid) or polylactide (PLA) is commonly researched as a possible replacement for traditional fossil-based polymers because of its compostability, biocompatibility, and high mechanical properties. PLA has a variety of applications in packaging, biomedical, and structural. However, PLA has limitations, such as high brittleness, low thermal stability, and a slow crystallization rate, which limits the wide range of applications. To overcome these limitations, the literature reports that blending PLA with other polymers, such as poly(ε-caprolactone) (PCL), is an economically viable approach. Although blending PLA with PCL is considered a feasible approach, the blend system still suffers from immiscibility, depending on the blend composition. This review aims to highlight recent developments from 2014 to date on the processing of PLA/PCL blends, including their composites, with a primary focus on morphological characteristics and mechanical and thermal properties, including their potential applications in various sectors.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140300836","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

Effects of Carbon Black Surface Modification on the Morphology and Properties in Blends with Natural Rubber Studied with High-Resolution X-Ray Computed Tomography 利用高分辨率 X 射线计算机断层扫描研究炭黑表面改性对天然橡胶共混物形态和性能的影响

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-18 DOI: 10.1002/mame.202400019

Yuting Wang, Wei Jiang, Keran Zhu, Lihui Wu, Liang Chen

{"title":"Effects of Carbon Black Surface Modification on the Morphology and Properties in Blends with Natural Rubber Studied with High-Resolution X-Ray Computed Tomography","authors":"Yuting Wang, Wei Jiang, Keran Zhu, Lihui Wu, Liang Chen","doi":"10.1002/mame.202400019","DOIUrl":"10.1002/mame.202400019","url":null,"abstract":"To elucidate the specific mechanical impact of carbon black (CB) filler–rubber interactions on reinforcement, CB particles are subjected to graphitization at 1300 °C and oxidation through concentrated nitric acid treatment to modulate their surface activity. Alongside untreated CB particles, the influence of surface activity and the oxygen distribution are investigated to assess their role in shaping CB aggregate structures using X-ray absorption spectrum (XAS) and X-ray computed tomography (CT) with spatial resolution of 30 nm. Meanwhile, virgin and modified CBs are blended in natural rubber with varying amounts (10, 30, 50 phr) and the aggregates distributions in rubber are investigated by nano-CT. Combined with the mechanical properties of rubber composites and parameters of filler networks, the mechanical contributions arising from filler–rubber interactions are quantified. The findings underscore the robust interactions between oxidized CB and rubber matrix, exhibiting a mechanical property enhancement ratio of ≈59.2% at low strains in comparison to normal CB filler. The results indicate the synergies encompass of filler network, rubber chains, and filler–rubber interactions all play important roles for reinforcement, which aligns with the broader understanding of filler–rubber interactions and CB reinforcement mechanisms.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202400019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140169263","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

Boosting the Biodegradation and Bioactivity of PBS-DLS Copolymers via Incorporation of PEG 通过加入 PEG 提高 PBS-DLS 共聚物的生物降解和生物活性

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-18 DOI: 10.1002/mame.202300443

Moein Zarei, Beata Michalkiewicz, Miroslawa El Fray

{"title":"Boosting the Biodegradation and Bioactivity of PBS-DLS Copolymers via Incorporation of PEG","authors":"Moein Zarei, Beata Michalkiewicz, Miroslawa El Fray","doi":"10.1002/mame.202300443","DOIUrl":"10.1002/mame.202300443","url":null,"abstract":"Biodegradable polymers play a crucial role in the development of materials for biomedical applications. This study investigates the enzymatic biodegradation, bioactivity, and cytotoxicity of poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers modified with poly(ethylene glycol) (PEG). Two copolymer variations with different segmental compositions (70 wt.% and 60 wt.% of hard segments) are synthesized. After modifying the copolymers with PEG, the presence of a lipase catalyst accelerated degradation after 20 days, evidenced by reduced residual content. Gel permeation chromatography analysis showed up to 40% decrease in molecular weight, while gravimetric analysis indicated a mass loss of up to 10%. Morphological examination revealed that the enzymatic breakdown, facilitated by hydrolase activity (boosted by the presence of PEG), resulted in surface erosion, holes, and changes in spherulitic morphology. Bioactivity studies demonstrated the formation of biomimetic calcium/phosphate (Ca/P) crystals. Copolymers with higher crystallinity (70 wt.% hard segments) favored tricalcium phosphate-like crystal formation, while those with lower crystallinity (60 wt.% hard segments) are more susceptible to hydroxyapatite precipitation. In vitro cytotoxicity tests exhibited excellent cell viability and attachment for all copolymers. The ability to control degradation through PEG modification, along with their bioactivity and cell compatibility, positions them as promising candidates for diverse biomedical applications.","PeriodicalId":18151,"journal":{"name":"Macromolecular Materials and Engineering","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mame.202300443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140169265","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

Polydopamine as a Materials Platform to Promote Strong and Durable Interfaces in Thermoplastic Polymer-Titanium Joints 聚多巴胺作为一种材料平台，可促进热塑性聚合物-钛接头形成坚固耐用的界面

IF 3.9 3区材料科学

Macromolecular Materials and Engineering Pub Date : 2024-03-18 DOI: 10.1002/mame.202300396

Georgios Kafkopoulos, Joost Duvigneau, G. Julius Vancso

引用次数: 0