Surface modification of cellulose nanowiskers with organosilane to fabricate high-performance polylactic acid nanocomposite materials

2017 ◽  
Vol 88 ◽  
pp. 221-229
Author(s):  
Yongqi Yu ◽  
Jiaojiao Miao ◽  
Zhaodong Ding ◽  
Xuejiao Liu ◽  
Xuan Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Polylactic Acid ◽  
High Performance ◽  
Nanocomposite Materials

Mussel-inspired surface functionalization of porous carbon nanosheets using polydopamine and Fe3+/tannic acid layers for high-performance electrochemical capacitors

2017 ◽  
Vol 5 (48) ◽  
pp. 25368-25377 ◽  
Author(s):  
Yeong A. Lee ◽  
Jiyoung Lee ◽  
Dae Wook Kim ◽  
Chung-Yul Yoo ◽  
Sang Hyun Park ◽  
...  
Keyword(s):  
Surface Modification ◽  
Tannic Acid ◽  
Surface Functionalization ◽  
Porous Carbon ◽  
High Performance ◽  
Electrochemical Capacitors ◽  
Carbon Nanosheets

The mussel-inspired surface modification for high-performance electrochemical capacitors is demonstrated.

scholarly journals Preparation of high-performance toluene adsorbents by sugarcane bagasse carbonization combined with surface modification

RSC Advances ◽  
2020 ◽  
Vol 10 (40) ◽  
pp. 23749-23758
Author(s):  
Yu Wang ◽  
Wangsheng Chen ◽  
Bo Zhao ◽  
Huaqin Wang ◽  
Linbo Qin ◽  
...  
Keyword(s):  
Surface Modification ◽  
Sugarcane Bagasse ◽  
High Performance ◽  
Activated Carbons ◽  
Excellent Performance

A series of activated carbons were prepared by carbonizing sugarcane bagasse combined with surface modification, which showed an excellent performance of adsorbing toluene (522 mg g−1 at 30 °C).

Morphological Investigations of Organic/Inorganic Nanocomposites Fabricated to Achieve Controlled Dispersion at High Loadings

2011 ◽  
Vol 1312 ◽  
Author(s):  
Andrew J. Duncan ◽  
Andrew B. Schoch ◽  
Christopher S. Gold ◽  
Joseph L. Lenhart ◽  
Frederick L. Beyer
Keyword(s):  
Surface Modification ◽  
Block Copolymer ◽  
Hierarchical Structure ◽  
Sio2 Nanoparticles ◽  
Nanocomposite Materials ◽  
Aggregation State ◽  
Twin Screw ◽  
Inorganic Nanocomposites ◽  
Morphological Investigations

ABSTRACTRealization of property enhancements inherent to the presence of nanoparticles continues to be a challenge for the production of bulk nanocomposite materials with commercially available techniques. This study combines twin-screw compounding with surface modification of SiO2 nanoparticles to enable targeted dispersion in a SEBS block copolymer. Production of these composites with high levels of well-dispersed particulates aims to leverage aggregation for production of hierarchical structure. The aggregation state of the particles as well as the level of order in the block copolymer morphology was determined through USAXS and TEM. Particles coated with ligands miscible with the end-blocks of the BCP (minority component) increased dispersion at all loading levels observed up to 10 vol%. Ligands employed to increase miscibility of the nanoparticle with the mid-block (majority component) resulted in large aggregates for all loadings without disturbance of the BCP morphology.

Solution to Inverse Problem of Manufacturing by Surface Modification With Controllable Surface Integrity Correlated to Performance: A Case Study of Thermally Sprayed Coatings for Wear Performance

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
X. P. Zhu ◽  
P. C. Du ◽  
Y. Meng ◽  
M. K. Lei ◽  
D. M. Guo
Keyword(s):  
Inverse Problem ◽  
Surface Modification ◽  
Surface Integrity ◽  
High Performance ◽  
Surface Characteristics ◽  
Spray Angle ◽  
Functional Surface ◽  
Machining Processes ◽  
Wear Performance ◽  
Surface Features

Inverse problem of manufacturing is studied under a framework of high performance manufacturing of components with functional surface layer, where controllable generation of surface integrity is emphasized due to its pivotal role determining final performance. Surface modification techniques capable of controlling surface integrity are utilized to verify such a framework of manufacturing, by which the surface integrity desired for a high performance can be more effectively achieved as reducing the material and geometry constraints of manufacturing otherwise unobtainable during conventional machining processes. Here, thermal spraying of WC–Ni coatings is employed to coat stainless steel components for water-lubricated wear applications, on which a strategy for direct problem from process to performance is implemented with surface integrity adjustable through spray angle and inert N2 shielding. Subsequently, multiple surface integrity parameters can be evaluated to identify the major ones responsible for wear performance by elucidating the wear mechanism, involving surface features (coating porosity and WC phase retention) and surface characteristics (microhardness, elastic modulus, and toughness). The surface features predominantly determine tribological behaviors of coatings in combination with the surface characteristics that are intrinsically associated with the surface features. Consequently, the spray process with improved N2 shielding is designed according to the desired surface integrity parameters for higher wear resistance. It is demonstrated that the correlations from processes to performance could be fully understood and established via controllable surface integrity, facilitating solution to inverse problem of manufacturing, i.e., realization of a material and geometry integrated manufacturing.

Clindamycin-loaded titanium prevents implant-related infection through blocking biofilm formation

2021 ◽  
pp. 088532822110511
Author(s):  
Youbin Li ◽  
Shaochuan Wang ◽  
Shidan Li ◽  
Jun Fei
Keyword(s):  
Surface Modification ◽  
Rat Model ◽  
Biofilm Formation ◽  
High Performance ◽  
Bacterial Colonization ◽  
Tissue Homogenate ◽  
Tartrate Resistant Acid Phosphatase ◽  
Layer By Layer

Implant-related infection is a disastrous complication. Surface modification of titanium is considered as an important strategy to prevent implant-related infection. However, there is no recognized surface modification strategy that can be applied in clinic so far. We explored a new strategy of coating. The clindamycin-loaded titanium was constructed by layer-by-layer self-assembly. The release of clindamycin from titanium was detected through high performance liquid chromatography. Different titanium was co-cultured with Staphylococcus aureus for 24 h in vitro, then the effect of different titanium on bacterial colonization and biofilm formation was determined by spread plate method and scanning electron microscopy. Cytotoxicity and cytocompatibility of clindamycin-loaded titanium on MC3T3-E1 cells were measured by CCK8. The antibacterial ability of clindamycin-loaded titanium in vivo was also evaluated using a rat model of osteomyelitis. The number of osteoclasts in bone defect was observed by tartrate-resistant acid phosphatase staining. Bacterial burden of surrounding tissues around the site of infection was calculated by tissue homogenate and colony count. Clindamycin-loaded titanium could release clindamycin slowly within 160 h. It reduced bacterial colonization by three orders of magnitude compare to control ( p < .05) and inhibits biofilm formation in vitro. Cells proliferation and adhesion were similar on three titanium surfaces ( p > .05). In vivo, clindamycin-loaded titanium improved bone healing, reduced microbial burden, and decreased the number of osteoclasts compared control titanium in the rat model of osteomyelitis. This study demonstrated that clindamycin-loaded titanium exhibited good biocompatibility, and showed antibacterial activity both in vivo and in vitro. It is promising and might have potential for clinical application.

Towards high performance Li metal batteries: Nanoscale surface modification of 3D metal hosts for pre-stored Li metal anodes

Nano Energy ◽  
2018 ◽  
Vol 54 ◽  
pp. 375-382 ◽  
Author(s):  
Keegan R. Adair ◽  
Muhammad Iqbal ◽  
Changhong Wang ◽  
Yang Zhao ◽  
Mohammad Norouzi Banis ◽  
...  
Keyword(s):  
Surface Modification ◽  
High Performance ◽  
Metal Anodes

Surface modification of metal materials for high-performance electrocatalytic carbon dioxide reduction

Matter ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 888-926
Author(s):  
Yangbo Ma ◽  
Juan Wang ◽  
Jinli Yu ◽  
Jingwen Zhou ◽  
Xichen Zhou ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Surface Modification ◽  
High Performance ◽  
Carbon Dioxide Reduction ◽  
Metal Materials

Development of High-Performance Polycrystalline CVD Diamond Coated Cutting Tool Edge With Femtosecond Laser

2020 ◽  
Author(s):  
Xiaoxu Liu ◽  
Kohei Natsume ◽  
Satoru Maegawa ◽  
Fumihiro Itoigawa
Keyword(s):  
Surface Modification ◽  
Femtosecond Laser ◽  
Pulse Laser ◽  
Laser Fluence ◽  
High Performance ◽  
Short Pulse ◽  
Cvd Diamond ◽  
Diamond Surface ◽  
Nanosecond Laser ◽  
Tool Edge

Abstract To realize the high performance of CVD diamond coated tools, a tool edge shaping process named pulse laser grinding (PLG) was developed with short pulse laser in our group previously. In this study, femtosecond laser was innovatively to be used to conduct the PLG process, since femtosecond laser is famous for its less thermal impact and some newly reported surface modification effect. The results show that PLG processing under high laser fluence of femtosecond laser could achieve roundness around 1 μm, which is similar to that of conventional PLG process with nanosecond laser, although the roughness of processed surface has been worse due to the redeposited debris. Furthermore, an interesting phenomenon has been confirmed again that under low laser fluence irradiation of femtosecond laser, the CVD diamond surface shows improved crystallinity of diamond structure. Based on this, a two-step tool edge processing method was proposed, which could realize the edge shaping and surface modification together with one laser processor. And the results show that the processed tool edge with much less edge roundness and surface roughness, and the tip part with better diamond crystallinity, indicating that sharper and hardness tool edge could be possibly to be realized with femtosecond laser.

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