ACS Sustainable Chemistry & Engineering
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2022
·
IF 9.224
Di Wu,Ying-Mei Leng,Cheng-Jie Fan,Zhi-Yuan Xu,Lu Li,Ling-Ying Shi,Ke-Ke Yang,Yu-Zhong Wang
The emergence of 4D-printing technology provides a new opportunity for the development of shape memory polymers (SMPs) with sophisticated or individualized architectures in the most material-saving way. Fused deposition modeling (FDM) has been regarded as a feasible and facile printing technology to print thermoplastics, but the low adhesion between interlayers of the obtained objects is an unavoidable problem caused by its printing principle. Fortunately, abundant biobased chemicals with a variety of reactive groups make it easy to design ecofriendly linear SMPs with active sites, which are ready for in situ reactions during FDM printing. Herein, we developed fully biobased shape memory copolyesters (PBSe-co-PBIs) by polycondensation of dimethyl itaconate, dimethyl sebacate, and 1,4-butanediol. The flexible and crystalline PBSe may serve as a molecular switch to ensure the desirable shape memory effect (SME) of the materials, and the PBI moiety with double bonds forming cross-linking points between layers during the printing process under UV irradiation acts as net points for SMPs and enhances interlayer adhesion. The shape memory performance and the enhanced interlayer adhesion of printed materials by this strategy were verified by DMA analysis and tensile tests. Finally, a 4D-printed “Sanxingdui bronze mask” and an overheating protection cover were demonstrated, which indicated a great potential in high-temperature protection devices.
研究领域:
材料科学
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高分子化学
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生物工程
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DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2022
·
IF 9.879
Zhongming Li,Dong Feng,Bin Li,Delong Xie,Yi Mei
Wearable sensors with a three-dimensional (3D) structural design and electromagnetic shielding performance are significant for the future development of wearable electronic devices. However, it remains a challenge to achieve the target goals. Herein, the thermoplastic polyurethane (TPU)/Ti 3 C 2 T x (MXene)/MnFe 2 O 4 /Multi-walled carbon nanotubes (MWCNTs) ( i.e ., TMMM) composites were innovatively designed using parametric Voronoi structure with different pore sizes and porosity upon fused deposition molding (FDM) printing. The two-dimensional (2D) MXene/zero-dimensional (0D) MnFe 2 O 4 hybrid fillers were built initially by electrostatic bonding strategy, followed by adding the one-dimensional (1D) MWCNTs as a conductive bridging agent, this way endowed the nanofillers with different dimensions uniformly dispersed to form a superb conductive network structure in the TPU matrix. When applied as pressure sensors , the TMMM composites exhibited adjustable gauge factor (GF = 1.33–3.73), extensive sensing compression range (∼89% strain with 12.03 MPa stress), good durability (6000s cyclic compression), which was very conducive to monitoring human motion, such as finger bending, wrist bending, speech recognition, etc . The sensing mechanisms were also studied using the Finite element simulations , and the variation trend of resistance change was in good agreement with the simulation results. The average electromagnetic interference shielding efficiency (EMI SE) value of the 2.1 mm-thick printed composite reached 31.2 dB , suggesting that 99.9242% of electromagnetic waves can be shielded. The proposed strategy not only provided a solution to reduce the weight of electromagnetic shielding materials , but also provided an efficient method for developing porous 3D printed parts with adjustable sensing properties at the macroscopic scale towards wearable electronic devices.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
RSC Advances
·
2011
·Vol. 2
·期 3
·956-962
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IF 0
Shao-Xin Deng,Xin-Lei Zhang,Jin-Gui Wang,Hui-Jing Zhou,Ping-Chuan Sun,Tie-Hong Chen
Ordered multi-amine functionalized mesoporous silica with a 3D cubic Fdm mesostructure was synthesized with anionic surfactant N-lauroylsarcosine sodium (Sar-Na) as a template, and [3-(2-aminoethyl)-aminopropyl]trimethoxysilane (DAPS) or 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane (TAPS) as co-structure directing agents (CSDAs). To our knowledge, this is the first time the use of DAPS and TAPS as CSDAs in an anionic surfactant templated system have been reported. Using DAPS and TAPS as the CSDA favors the formation of a 3D cubic mesocaged solid with Fdm symmetry, while with 3-aminopropyltriethoxysilane (APS) as the CSDA, only the p6mm mesoporous phase was formed. The geometrical change of the CSDA resulted in a change of the surfactant packing parameter, leading to the change of the silica mesophase from 2D-hexagonal p6mm to 3D cubic Fdm symmetry. After extraction of the templates, multi-amine-functionalized cubic Fdm mesoporous silicas were obtained. The multi-amine functionlized mesoporous silicas exhibit excellent properties in adsorption and removal of heavy metal ions in solution as well as the support of noble metal nanoparticles.
研究领域:
材料科学
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环境科学
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产品关联
DOI
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Chuan-Ying Cheng,Hui Xie,Zhi-yuan Xu,Lu Li,Mei-Na Jiang,Li Tang,Ke-Ke Yang,Yu-Zhong Wang
4D printing, as a booming additive manufacturing technology of smart material, provides a new opportunity for the development of shape memory polymers (SMPs). Meanwhile, the diversity of SMPs structure calls for flexible and well-adapted printing technology. Fused deposition modelling (FDM) is one of the most versatile and cost-effective methods owing to the simplicity of the technique and broad compatibility with a wide variety of materials, but it fails to deal with the fabrication of shape memory networks that possess excellent structural stability as well as shape memory effect (SME). Aiming to personalized or patient-adaptable treatment devices, in this work, we demonstrate a UV-assisted FDM 4D printing strategy to fabricate elbow protector models based on shape memory copolyester networks. First, the linear unsaturated copolyesters were synthesized, amongst, poly(lactic acid) was chosen as hard segment providing the material a good mechanical performance and printability, the poly(ε-caprolactone) with strong crystallizability was employed as switching segment, and a functional coupling agent contained double bonds was used to join the two segments and as the same time. This copolyester can be easily processed into filament, and the in-situ formation of photo-crosslinking network during the UV-assisted FDM printing not only enhances the bonding strength of each layer, but also may guarantee the obtained objects a good shape memory property. Three models with distinctly Chinese characteristics were printed to demonstrate excellent SME. Then, the elbow protectors both in personalized and patient-adaptable treatment strategies were developed, which indicates a great potential in robust applications.
研究领域:
材料科学
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生物医学工程
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3D打印技术
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产品关联
DOI
高影响因子
Pharmaceutics
·
2021
·Vol. 13
·期 9
·1524
·
IF 6.321
Sadikalmahdi Abdella,Souha H. Youssef,Franklin Afinjuomo,Yunmei Song,Paris Fouladian,Richard Upton,Sanjay Garg
Three-dimensional (3D) printing is among the rapidly evolving technologies with applications in many sectors. The pharmaceutical industry is no exception, and the approval of the first 3D-printed tablet (Spiratam®) marked a revolution in the field. Several studies reported the fabrication of different dosage forms using a range of 3D printing techniques. Thermosensitive drugs compose a considerable segment of available medications in the market requiring strict temperature control during processing to ensure their efficacy and safety. Heating involved in some of the 3D printing technologies raises concerns regarding the feasibility of the techniques for printing thermolabile drugs. Studies reported that semi-solid extrusion (SSE) is the commonly used printing technique to fabricate thermosensitive drugs. Digital light processing (DLP), binder jetting (BJ), and stereolithography (SLA) can also be used for the fabrication of thermosensitive drugs as they do not involve heating elements. Nonetheless, degradation of some drugs by light source used in the techniques was reported. Interestingly, fused deposition modelling (FDM) coupled with filling techniques offered protection against thermal degradation. Concepts such as selection of low melting point polymers, adjustment of printing parameters, and coupling of more than one printing technique were exploited in printing thermosensitive drugs. This systematic review presents challenges, 3DP procedures, and future directions of 3D printing of thermo-sensitive formulations.Keywords:3D printing;thermolabile;thermosensitive;FDM;SSE;SLA;DLP
研究领域:
制药工程
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生物医学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2023
·
IF 5.8
Hao Chen,Xin Li,Ye Gong,Tianshi Bu,Xiangyu Wang,Hao Pan
Oromucosal delivery of active ingredients of drugs provides a superior administration route for the treatment of oral diseases, due to avoidance of the first pass effect . In the present work, in view of the characteristics of large differences between oral ulcer symptoms and different lesion sizes, dexamethasone acetate unidirectional drug release buccal patches has been prepared based on Fused Deposition Modelling (FDM). Unidirectional drug release was achieved by covering the top and side with ethyl cellulose . Polyvinyl alcohol as a drug carrier, xylitol as a plasticizer . First, the protection effect of different thicknesses of the protective layer is investigated to determine the thickness of the protective layer. Co-extrusion printing method was adapted, utilizing blank filament to regulate preparations with different areas' drug loading. The results show that co-extrusion had no significant impact on the overall patches' drug release and adhesion properties. The physicochemical properties of the patches were also characterized. Evaluation of irritation is showed that these patches do not cause irritation to the oral mucosa of rats. Pharmacodynamic evaluation results showed that the preparation could promote the reduction of ulcer area. The results showed that FDM printing is a convenient and practical approach in manufacturing buccal patches.
研究领域:
药剂学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
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2025
·
IF 2.4
Qiongzhen Zeng,Zhiyu Huo,Dongdong Wu,Lei Chen,Jinan Zhao
Graphite as the most widely used commercial anode material, has been developed to approach the theoretical upper limit of specific capacity, which possibly unsatisfied market demand in the coming future. To pursuit higher energy density Li-ion batteries (LIBs), a way of increasing anode thickness to improve areal capacity is proposed. 3D printing as an emerging technology, has more potential than traditional slurry-casting method in manufacturing the thick electrodes. Hence, this work employs Fused deposition modeling (FDM) printing and carbonization process to fabricate a thick electrode without current collector, 3D-G, which has honeycomb architecture, high areal mass loading and high areal capacity. With the biggest thickness, 3D-G can present a 16.96 mg cm −2 areal mass loading. The architecture offers surface channel to facilitate electrolyte infiltration and Li-ion diffusion that alleviates the kinetics defect caused by scaling up thickness. With a 0.6 mm electrode thickness and 0.5 mm honeycomb thickness, 3D-G delivered a 1.69 mAh cm −2 remaining capacity and a 2.53 mAh cm −2 average capacity after 100 cycles at a 0.3 mA cm −2 . This research reveals the defects of graphite thick electrode and contributes a surface channel strategy to fabricate thick electrodes and optimize the rate and cycle capability.
研究领域:
材料科学
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储能
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增材制造
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电化学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Bofan Shen,Jiang Liu,Fei Li,Wei Fan,Chunfu Sun,Zhenbiao Song,Ming Chen,Haotian Song,Xu He,Jian Kang,Qiang Fu,Ming Xiang,Shulai Lu
Interlayer bonding strength (IBS) is the decisive factor governing the performance of fused deposition modeling (FDM) parts. However, limited research has been conducted on regulating the material molecular structure within FDM processes to enhance IBS. In this study, different acrylonitrile butadiene styrene (ABS) specimens for FDM were fabricated by strategically modifying the molecular structure of ABS through emulsion grafting polymerization (to control grafted layer thickness) and seed amplification methodology (to achieve a bimodal particle size distribution). The grafted layer thickness of ABS polybutadiene (PB) phase particles, the compatibility between the two phases, the IBS, and the resulting properties of the FDM parts were investigated. The results demonstrate that increasing the grafted layer thickness of the ABS PB phase particles enhances the compatibility between the phases and increases the fluidity of the ABS melt. Consequently, this improves both the diffusion ability and time for molecular chains during the FDM process, thereby further enhancing IBS. Regulating a bimodal distribution of PB phase particle size further increased ABS melt fluidity, leading to additional IBS improvement. The IBS was directly quantified by T-peel tests, revealing an 110.8 % increase from ABS-1 to ABS-3, with ABS-3 exhibiting a 32.2 % higher peel strength (3.12 N/mm) than a commercial ABS. Following IBS enhancement, the impact strength increased by 60.7 % at 25 °C and by 161.5 % at −30 °C, while the tensile strength increased by 55.6 %. The retention rate of low-temperature impact strength increased by 62.6 %. Furthermore, the dimensional stability of the FDM parts demonstrated significant improvement.
研究领域:
高分子材料科学
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增材制造
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材料力学性能
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聚合物加工
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复合材料
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Yunzhongze Hu,Jiafei Gu,Yang Zhang,Gongyu Liu,Xiaosu Yi,Xiaoling Liu
Polylactic acid (PLA), a rapidly emerging bio-based plastic, faces challenges in reinforcement due to its weak mechanical properties and poor interface adhesion with carbon fibre surfaces. This study introduces an MXene/recycled carbon fibre (rCF) reinforced PLA 3D printing material, prepared through electrostatic self-assembly of MXene and recycled carbon fibre. MXene addition significantly enhances the fibre-substrate interface bonding in fibre-reinforced PLA filaments. This results in the printed parts displaying enhanced toughness, the flexural strength achieved of 105.45 MPa, modules of 5.98Gpa, and notched impact strength of 7.12 kJ/m 2 , realizing 15.6 %, 112.1 %, and 31.8 % improvements, respectively in comparison to pure PLA. Additionally, the modified PLA demonstrates absorption-dominated superior electromagnetic shielding performance. This research offers a viable approach for enhancing recycled carbon fibre-reinforced thermoplastic PLA and insights into designing sustainable, structurally, and functionally integrated composites.
研究领域:
材料科学
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环境科学
·
电子工程
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产品关联
DOI
高影响因子
Advances in Condensed Matter Physics
·
2018
·Vol. 2018
·期 1
·5654010
·
IF 0.959
ChenGuang Zhang,Ching-Jung Chen,Kalpana Settu,Jen-Tsai Liu
Surface plasmon resonance (SPR) is a real-time, label-free, and high-sensitive detection technology. SPR has been widely used in many applications such as biomolecular interaction analysis, environmental monitoring, and medical diagnostics. However, conventional SPR sensor systems usually require expensive equipment and complicated optics. In this paper, we have demonstrated a rapid prototyping of angle-scanning SPR for bioanalytical investigation. Rapid prototyping was attained by utilizing the FDM (fused deposition modeling) based 3D (three-dimensional) printing technology. Two rotating platforms were employed to drive the laser source and photodiode, respectively. A temperature regulation unit was incorporated to maintain the system temperature in order to reduce the temperature effect. The proposed SPR rapid prototyping yielded a refractive index resolution of 6.4×10 −6 RIU (refractive index unit), and the biotin-avidin system validated the kinetics parameters measurement capability. The obtained results indicated that the FDM 3D printing has great potential for developing rapid-prototyping SPR system.
研究领域:
生物技术
·
光学
·
分析化学
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材料科学
·
生物医学工程
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DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2021
·
IF 7.328
Qifan Wang,Wenjie Ye,Zhiyong Ma,Wenjia Xie,Linna Zhong,Ying Wang,Qiong Rong
Scaffolds prepared by 3D printing are increasingly used in the field of bone tissue repair. However, on traditional 3D printed bone tissue engineering scaffolds, cells can only grow on the fiber surface and form bone. We designed a scaffold with a cross-scale structure of PCL/β-TCP, which contains thick fibers with a diameter of 500 μm printed by FDM. And in the pores of the coarse fiber, the ultra-high precision fine fiber grid with a diameter of about 10 μm is filled by MEW mode. In cell experiments, cells can not only grow on the thick fiber surface of the cross-scale scaffold. At the same time, the mesh structure of fine fibers provides a bridge for cell growth, allowing cells to pass through the pores of thick fibers and grow in the pores and gradually cover the pores of the scaffold. In the osteoinduction experiment, β-TCP in the PCL/β-TCP composite provides Ca 2+ and PO 4 3− to the scaffold, which effectively promotes the osteogenic differentiation of cells on the scaffold. Compared with traditional scaffolds, the osteogenic performance of cross-scale scaffolds is greatly improved. Not only did bone form on the surface of the scaffold, but also obvious ALP expression and effective calcium precipitation appeared in the pores of the scaffold. This can effectively speed up the repair of bone defects. We believe that the 3D printed PCL/β-TCP cross-scale scaffold with high-precision fibers has great application prospects in the field of bone tissue engineering.
研究领域:
生物医学工程
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组织工程
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材料科学
·
骨科
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产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2022
·
IF 9.417
Yutong Yang,Haichao Wu,Qiliang Fu,Xinfeng Xie,Yongming Song,Min Xu,Jian Li
Fused deposition molding (FDM) can complete most complex preparation of drug delivery implants to meet the personalized needs of patients. However, the drug activity has strict requirements on processing temperature and preparation method of filaments, the implant also has strict biocompatibility requirements for the materials. In this study, a drug delivery implant was prepared with good biocompatibility, controlled and efficient drug release using FDM printing for personalized administration. Drug-loaded filaments were developed for FDM process by hot-melt extrusion (HME). Polycaprolactone was used as a drug delivery carrier, and ibuprofen as the model drug. Notably, chitosan was dissolved to form controlled and efficient release channels. The printability, changes in physical and chemical properties during HME and FDM processes of the filament, and drug release behavior, mechanism and biocompatibility of the implants were investigated. The results showed that the filament tensile strength decreased with the increase of drug and chitosan content. No obvious degradation and chemical change occurred during the whole process. The drug release efficiency could reach>99% and lasted for 120 h mainly via the diffusion - erosion mechanism. The viability of cells cultured for 24 h in 72 h, 100% implant extract was 75.3%.
研究领域:
药学
·
生物医学工程
·
材料科学
·
药物递送系统
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）