SVOA Materials Science & Technology
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Important Criteria for Preparation of 3D Printer Filaments from Polymer Biocomposites
Ahmad Adlie Shamsuri *
Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
Nowadays, there are many types of 3D printer filaments have been produced to fulfill the demand of small-scale fabrication industry. The use of polymer biocomposites as 3D printer filaments is one of the ways to reduce the dependence on the synthetic thermoplastics that are expensive and non-biodegradable. This is due to the utilization of natural fibers as fillers that can decrease the percentage of synthetic thermoplastics usage. Nevertheless, there are some criteria must be considered to ensure the quality of the 3D printed products fabricated from the biocomposites is good as existing filaments. This paper has briefly explained some important criteria that recently identified before preparing 3D printer filaments from polymer biocomposites. Keywords: Polymer, natural fiber, biocomposite, 3D printer, filament
Effects of Heat Treatment on Graphite Morphology and Impact Resistance in Industrial Grey and Ductile Irons
Tkachenko Igor1 *, Tkachenko Kostyantyn2 , Miroshnichenko Victoria3 1
Priazovsky State Technical University, Department of Materials Science, Mariupol, Ukraine
2 Priazovsky State Technical University, Department of Materials Science, Mariupol, Ukraine
3 Priazovsky State Technical University, Department of Materials Science, Mariupol, Ukraine
*Corresponding Author: Tkachenko Igor1 * Priazovsky State Technical University, Department of Materials Science, Mariupol, Ukraine
Based on the results previously obtained for cast alloy structural steels, the influence of isothermal holding at heating or cooling on graphite morphology and impact strength in industrial grey and ductile pearlitic irons were investigated. Some novel microstructure features were revealed in the irons after their optimal heat treatment, namely: ferrite matrix formation instead of pearlitic one in both irons; partial or full solving the original networked graphite plate-like inclusions; branched interfaces of originally spheroid graphite inclusions surrounded by probably nano - structured matrix areas etc. The microstructure features revealed were assumed to be responsible for the obtained unprecedented increase of impact strength up to KCU 550 kJ/m2 for each iron grade. The phenomena observed were attributed to a number of the known processes development during the proposed heat treatment, but require additional precise investigations in view of their general importance for metallic materials: composites, deposited, 3-D printed, powder sintered etc. Keywords: Pearlitic grey and Ductile irons, Heat treatment, Graphite morphology, Impact resistance
Study on tribology of natural fiber reinforced polymer composites: A review
Zeeshan Nusrat*1 and Anshuman Srivastava2
Department of Mechanical Engineering, Shambhunath Institute of Engineering and Technology, Allahabad, India
2 Department of Mechanical Engineering, Shambhunath Institute of Engineering and Technology, Allahabad, India
*Corresponding Author: Anshuman Srivastava, Professor, Department of Mechanical Engineering, Mechanical Engineering, Shambhunath Institute of Engineering and Technology, Allahabad, India
Today tribologists are interested in exploring new range of materials which can be suitable for engineering purposes where friction and wear are major obstacle. Apart from conventional materials, new range of materials includes composites like MMCs, CMCs and PMCs. Among all types of composites PMCs have become a potential candidate for such applications, because of easy processing and less cost. Though lot of work is going on different types of PMCs, but natural fiber reinforced polymer composites are gaining lot of interest. Natural fiber reinforced polymers are ecofriendly, biodegradable and sustainable in nature. The world wide availability, accessible agro waste is responsible for the new interest in research in sustainable technology. By this paper focus on tribological properties of natural fiber and their applications. Tribology study is very necessary to improve the strength and life of components which are made by natural fibers composites.
A Systemic Review on Nanoparticles
Damini Mishra ⁴ , Mohammad Gayoor khan ¹ , Umama Yezdani ² , Divya Sharma ³, Vinesha Ravi, Shivam Choudghal, D Mukilan.
Department of Pharmaceutics, Rameshwaram Institute of Technology and Management, Uttar Pradesh India ⁴ Department of Pharmacy, Truba Institute of Pharmacy, Bhopal Madhya Pradesh India ¹ Department of Pharmacy Practice, MRM College of Pharmacy, Hyderabad Telangana, India ² Department of Pharmacology, ISF College of Pharmacy, Moga Punjab3 . Department of Pharmacy Practice, ISF College of Pharmacy, Punjab India Department of Pharmacy Practice, Vels Institute Chennai, Tamilnadu India ⁴
From the ancient time nanotechnology is widely used for various treatment like cancer based treatment and presently NDDS is used for treatment of psoriasis and it play good role in healthcare field nowadays one of the focused area in nanotechnology which is nanoparticles. Nanoparticles are at the forefront of the rapidly developing field of nanotechnology with several potential applications in drug delivery, clinical medicine and research as well as in other varied sciences. Due to their unique size-dependent properties, nanoparticles offer the possibility to develop new therapeutics. The ability to incorporate drugs into nanocarriers offers a new prototype in drug delivery that could be used for secondary and tertiary levels of drug targeting. Hence, nanoparticles hold great promise for reaching the goal of controlled and site-specific drug delivery and hence have attracted wide attention of researchers. In this review presents a broad treatment of nanoparticles discussing their advantages, limitations and their possible remedies. The different types of nanocarriers which were based on solid lipid like solid lipid nanoparticles, nanostructured lipid carriers, Different production methods which are suitable for large scale production and applications of nanoparticles are described. Appropriate analytical techniques for characterization of nanoparticles like photon correlation spectroscopy, scanning electron microscopy, differential scanning calorimetry are highlighted.