Tribological behaviour of modified jatropha oil by mixing hexagonal boron nitride nanoparticles as a bio-based lubricant for machining processes

https://spiral.imperial.ac.uk/bitstream/10044/1/66327/6/APEN_Herrandoetal2019_Accepted.pdf

A comprehensive assessment of alternative absorber-exchanger designs for hybrid PVT-water collectors

The wider use of renewable feedstock in structural applications, where high mechanical performance is required, can be achieved by the application of recently developed engineering biopolymers and their further modification by micro- and nanoparticles. In this review, we present the current state of the art of biopolyamide materials for structural and functional applications. The overview includes all stages of the manufacturing—from the synthesis of building blocks, through the synthesis of polymers and its physical modification, with special emphasis on the properties of the obtained engineering biocomposites as a final product of modern polymer technology. In the first part, the synthetic routes of bio-derived counterparts of common polyamides as well as specialty polymers with functional properties arising from the complex structure of biochemicals were exemplified. The development of environmentally friendly composites and nanocomposites based on biopolyamides and natural fillers, such as plant fibers or cellulosic nanofibers, was of particular interest due to preserved sustainable character of such materials.

/pdf/modern-biopolyamide-based-materials-synthesis-and-r0mglresc1.pdf

Modern biopolyamide-based materials: synthesis and modification

Evaluation of the engineering performance of different bio-based aliphatic homopolyamide tubes prepared by profile extrusion

Injection-molded parts of fully bio-based polyamide 1010 strengthened with waste derived slate fibers pretreated with glycidyl- and amino-silane coupling agents

With the growing awareness of the damage sustained by environment, and the nearly-ubiquitous impulse to minimize and counteract this damage, the use of renewable (green) resources is becoming increasingly popular. Electronic industry continues to produce millions of electronic devices daily and the rapid growth of modern technology reduces these devices’ useable life spans. As a result, it has become increasingly imperative to find solutions for recycling these devices. Furthermore, since electronic devices are constantly becoming smaller and more powerful, accumulating heat concentration further reduces efficiency. Therefore, heat dissipation plays a very important role in modern electronic packaging applications. Bio-based high thermally conductive Polymeric composites seem to be potentially suitable replacements for current electronic packaging. These composites promise improved thermal management of electronics as well as protection from non-recyclable oil-based products in the environment. In this research, parametric study on partially bio-based polyamide (PA) in composite with micron size hexagonal boron nitride (hBN) platelets were performed. High viscosity PA90 and low viscosity PA30, both in composites with high thermally conductive hBN, were compared to determine the effect of matrix viscosity on mobility and arrangement of hBN particles, as well as effective thermal conductivity of the composite. Low viscosity PA30 consistently maintained higher values of thermal conductivity than the PA90. However PA90 shows higher mechanical properties. Furthermore, by narrowing down the filler content difference of the sample an interesting nonlinear trend between filler content and effective thermal conductivity of the composite is observed.

Thermal Composites of Biobased Polyamide with Boron Nitride Micro Networks

Development of high thermally conductive and electrically insulative composites is of interest for electronic packaging industry. Advancements in smaller and more compact electronic devices required improvements in packing materials, including their weight, thermal conductivity, and electrical resistivity. In addition, with the increasing environmental awareness, the usage of green (bio‐based) alternatives was equally important. In the present study a hybrid based on fibers of highly concentrated hexagonal boron nitride (hBN) in liquid crystal polymer (LCP) matrix were fabricated. These hybrids were formed by arranging hBN platelets into LCP fiber form to reach high filler concentration and then randomly mix it in polylactide (PLA) matrix. With appropriate filler interaction within the hybrid, thermal conductivity similar to that of pure fiber could be achieved. Filler interaction may be tailored by optimizing the fibers aspect ratio. This study demonstrated the effect of random fillers in fibers shape in increasing the overall thermal conductivity of PLA polymeric hybrid using hBN and LCP fibers. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 457–464

Min Wen Liu

Papers

Thermal Composites of Biobased Polyamide with Boron Nitride Micro Networks

Design of thermal hybrid composites based on liquid crystal polymer and hexagonal boron nitride fiber network in polylactide matrix

Design of thermal hybrid composites based on liquid crystal polymer and hexagonal boron nitride fiber network in polylactide matrix

Synthesis of High Ion Conductivity Cubic Garnet Li7La3Zr2O12 Solid Electrolyte by Controlling the 8a Oxygen Vacancy

The synthesis of Cr and P codoped NiMoO4 nanospheres as efficient catalyst for urea oxidation and oxygen evolution reaction