Research & Development in Material Science最新文献_第10页

Design, Realization and Characterization of a Wide-Angle Microwave Metasurface Absorber 广角微波超表面吸收器的设计、实现与特性研究

Research & Development in Material Science Pub Date : 2019-09-12 DOI: 10.31031/rdms.2019.11.000770

F. Frezza

引用次数: 0

Effective and Ideal Separation Factors at Sublimation Refining of Sm, Eu, Tm, Yb Sm, Eu, Tm, Yb升华提纯的有效和理想分离因素

Research & Development in Material Science Pub Date : 2019-09-10 DOI: 10.31031/RDMS.2019.11.000768

Кravchenko Ai

引用次数: 0

Computer-Aided Porous Materials Description Based on Morphological Spectra 基于形态光谱的多孔材料计算机辅助描述

Research & Development in Material Science Pub Date : 2019-09-10 DOI: 10.31031/RDMS.2019.11.000769

J. Kulikowski

{"title":"Computer-Aided Porous Materials Description Based on Morphological Spectra","authors":"J. Kulikowski","doi":"10.31031/RDMS.2019.11.000769","DOIUrl":"https://doi.org/10.31031/RDMS.2019.11.000769","url":null,"abstract":"Synthetic porous materials, e.g. based on polyamide, polyether sulfone, polyvinylpyrrolidone etc. compounds, have numerous and important medical applications. They are used as filtering membranes in hemodialysis [1], micro-capsules for cells or drugs encapsulation and delivery [2], scaffolds for biological tissue cultivation [3], etc. Usefulness of porous materials in medical applications directly depends on their biochemical and mechanical properties, in particular, on porosity characteristics. The last should thus be carefully controlled within a production process and kept stable for exploitation period. For this purpose, numerical parameters describing size and shape of pores as well as global material porosity characteristics (porosity factor, material’s permeability, multi-layer architecture of porous membranes etc.) have been proposed [4,5]. In fact, the parameters don’t describe the pores directly but their planar cross-sections visible in SEM (Scanning Electron Microscope) images. Moreover, such geometrical parameters like pore section’s spread, surface, length of contour etc. are by computer systems interpreted in a discrete geometry sense, not quite consistent with the widely known Euclidean geometry. The differences are particularly clear in case of small (consisting of several pixels) geometrical objects analysis.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80328411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Metabolic Rate and Clothing Estimation for Thermal Comfort Inference 热舒适推断的代谢率和服装估计

Research & Development in Material Science Pub Date : 2019-08-30 DOI: 10.31031/rdms.2019.11.000767

C. Timplalexis, A. Dimara, S. Krinidis, D. Tzovaras

引用次数: 0

Effect of Graphitic Nanomaterials on Thermal, Mechanical and Morphological Properties of Polypropylene Nanocomposites 石墨纳米材料对聚丙烯纳米复合材料热、力学和形态性能的影响

Research & Development in Material Science Pub Date : 2019-08-24 DOI: 10.31031/RDMS.2019.11.000766

C. Mahajan, Satyendra Mishra

{"title":"Effect of Graphitic Nanomaterials on Thermal, Mechanical and Morphological Properties of Polypropylene Nanocomposites","authors":"C. Mahajan, Satyendra Mishra","doi":"10.31031/RDMS.2019.11.000766","DOIUrl":"https://doi.org/10.31031/RDMS.2019.11.000766","url":null,"abstract":"Graphitic nanomaterials such as GO, RGO and carbon nanotubes (CNT) have attracted great interest in recent years because of their various applications such as mechanical, thermal, optical, and electrical properties [1-6]. PP is one of the commercial importance polyolefins because of its cost-effectiveness as well as intrinsic properties of low density, high stiffness, good tensile strength and inertness toward acids, alkalis and solvents [7]. PP has also been used in a wide range of applications including packaging [8], textiles [9], automotive components [10,11], aerospace [12,13], home applications [14], construction [15,16] etc. as per say; therefore, the improvement in the properties of PP is further needed. Researchers around the world tried various nanofillers such as MMT [17], nTiO2 [18,19], nBaCO3 [20], CaCO3 [21], nano polystyrene [22], Tea Dust /GO [23], graphene [24,25] and CNT [26] to improve thermal and mechanical properties of PP matrix. Some of the researchers used functionalization of graphene using 4,4’-diphenylmethane diisocyanate (MDI) and stearic acid to improve thermal and mechanical properties of PP [24]. Ryu [27] have done the functionalization of GO by alkylamine, and studied the crystallization, mechanical and electrical properties of isotactic polypropylene nanocomposites. Polypropylene composites of alkylamine-modified GO were prepared through a melt blending technique using maleic anhydride-grafted PP as a compatibilizer. Significant improvements were observed in melt crystallization characteristics, mechanical and electrical properties upon loading alkyl amine-modified GO in PP due to strong interfacial interactions between the polymer and modified GO.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76293016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanical Characterization of Natural Fiber based Polymer Matrix Composite -A Review 天然纤维基聚合物基复合材料力学性能研究进展

Research & Development in Material Science Pub Date : 2019-08-23 DOI: 10.31031/rdms.2019.11.000765

Shubham Mishra, A. Dubey, E. Prasad, S. Agarwal, Xunli Zhang

引用次数: 2

Reliability Studies Based on the Tensile Properties of the Polymer Nanocomposites 基于聚合物纳米复合材料拉伸性能的可靠性研究

Research & Development in Material Science Pub Date : 2019-08-21 DOI: 10.31031/RDMS.2019.11.000764

S. Mandal, D. Roy, N. Prasad, Xunli Zhang

{"title":"Reliability Studies Based on the Tensile Properties of the Polymer Nanocomposites","authors":"S. Mandal, D. Roy, N. Prasad, Xunli Zhang","doi":"10.31031/RDMS.2019.11.000764","DOIUrl":"https://doi.org/10.31031/RDMS.2019.11.000764","url":null,"abstract":"Polymer composites based on the high-performance thermoplastic polymers have many advantages and used for the various applications viz. bearings, brakes, clutches, gears, automation machinery in office, rollers and seals, pads of tank track, transmission belts along with many others [1-5]. The combination of superior thermo-mechanical properties causes poly (ether ketone) (PEEK) as a promising candidate for applications under chemical environment at high temperatures [6-10]. Poly (ether ketone) (PEK) is also semi crystalline polymer with glass transition temperature of 155 °C and melting point of 365 °C [11]. Poly (ether sulphone) (PES) is an amorphous polymer with a high Tg and can be classified as a thermally stable polymer. Among other interesting properties of PES, are good hydrolytic and thermo-oxidative stability, high rigidity and creep resistance. The high Tg of PES suggests the polymer as a suitable candidate for developing PEEK based blends [12,13]. Various studies have been carried out by different researchers on PEEK based composites [14-16]. However enormous scopes are still left to study in depth and details.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84555938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Droplet-Based Microgels: Attractive Materials for Drug Delivery Systems 滴基微凝胶:药物输送系统的有吸引力的材料

Research & Development in Material Science Pub Date : 2019-08-20 DOI: 10.31031/RDMS.2019.11.000763

Sammer-Ul Hassan, Xunli Zhang

{"title":"Droplet-Based Microgels: Attractive Materials for Drug Delivery Systems","authors":"Sammer-Ul Hassan, Xunli Zhang","doi":"10.31031/RDMS.2019.11.000763","DOIUrl":"https://doi.org/10.31031/RDMS.2019.11.000763","url":null,"abstract":"A microgel as defined by IUPAC is “particle of gel of any shape with an equivalent diameter of approximately 0.1 to 100μm”. Baker’s group was one of the first that studied microgels, and “micro” refers to the size and “gel” refers to the structure of the particle [1]. Thus, microgels are cross-linked polymer chains and are similar to macrogels, but they are in the micro-scale. Because of their micro-scale size, microgels have advantages over macrogels, and some of them are mentioned here. i) Microgel suspensions are free-flowing liquids which depend upon volume fraction of swollen particles and cross-linking properties. ii) Microgels respond to changing environment very rapidly, much faster than macrogels, because they have a high surface to volume ratio which transports mass to-and-from the microgels. iii) Exotic microgel morphologies can be used to fine-tune properties. iv) Microgels are considered as colloidal dispersions, and several colloidal science techniques including dynamic light scattering and small range light can provide structural information for microgels. On the other hand, these techniques cannot be used in the case of macrogels. v) Microgels can be assembled into useful larger objects such as 2D assemblies of the air-water and oil-water interfaces [2]. Examples of the 3D structure are colloidal crystals, environmentally sensitive optical properties, and layer-by-layer assemblies. These kinds of assemblies are not feasible when using macrogels.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76470077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Superior Mechanical Property Nanocrystalline Diamond Film for Extremely Thin Terahertz Traveling Wave Tube Window 超薄太赫兹行波管窗口用纳米晶金刚石薄膜的研究

Research & Development in Material Science Pub Date : 2019-08-09 DOI: 10.31031/rdms.2019.11.000762

M. Ding, Lili Li, C. Hua, Xinghui Li, Lin Chen, P. Pan, Xianping Wu, Jun Cai, Jinjun Feng

引用次数: 1

Plastic Materials for Modifying the Refractive Index of Contact Lens: Overview 改变隐形眼镜折射率的塑料材料综述

Research & Development in Material Science Pub Date : 2019-07-25 DOI: 10.31031/rdms.2019.11.000760

L. M. Shaker, A. Al-Hamdani, A. Al-amiery

引用次数: 2