12^th Asia Pacific Conference on Polymer Science and Engineering October 25-26, 2021 Tokyo, Japan

Biography:

HM Fayzan Shakir has completed his MS at the age of 25 years from National University of Science and technology, Pakistan and currently enrolled in PhD studies from Northwestern Polytechnical University,Xi’an, China in school of Materials Science and Engineering. He is working as Lecturer in department of Materials, School of Engineering and technology, National Textile University, Pakistan for the past 3 years. He has published more than 25 papers in reputed journals and has been serving as an editorial board member of  “Journal of Modern Polymer Chemistry and Materials”.

Abstract:

Polymer based composites were fabricated using electrically conductive and magnetic particles. Nickel Ferrites (NiFe) and Polyaniline (PANI) were used as magnetic and electrically conductive filler particles respectively. NiFe and PANI were prepared successfully by co-precipitation and chemical oxidative methods and confirmed by the XRD. Maximum of 20 wt% of each filler is used in polystyrene matrix. Solution casting method was used for the fabrication of composite films. Dielectric properties and DC conductivity were first analyzed of prepared composite films. Both DC conductivity and dielectric constant observed to be increased significantly and it gives the indication of enhanced Electromagnetic Interference (EMI) shielding properties of composite film. Vector Network Analyzer (VNA) is used to measure the EMI shielding effectiveness (SE) in microwave region (0.1 GHz to 20 GHz). Pure polystyrene doesn’t exhibit any EMI SE with -3 dB SE value. With the addition of both PANI and NiFe, SE value keep on increasing and reached the value of -35 dB in whole microwave range of 0.1 GHz to 20 GHz. SEM was also used to evaluate its microstructure of prepared composite films.

Biography:

Dr. Khubab Shaker has completed his PhD at the age of 31 years from National Textile University University. His area of expertise was particle loaded composite materials. Currently he is working as chairman department of materials at National Textile University. He has published more than 50 papers in reputed journals with a cumulative impact factor of 140, more than 20 conference papers, edited two books and contibuted 11 book chapters.

Abstract:

Sustainable development is a global challenge to improve the quality of our lives, protect our ecosystem and preserve the natural resources for the future generations. Currently, about 2.01 billion tons of municipal solid waste (MSW) is produced annually worldwide, of which about 15% are plastics. It is estimated that the MSW will increase to 3.40 billion tons by 2050. Only 13.5% of which is recycled and 5.5% is composted. The current study focussed to develop practices for waste management by recycling of the plant and fabric waste into sustainable polymeric composites. The yard cutting and fabric waste is either burnt or landfilled. The cellulosic fillers, waste jute fabric and green epoxy resin were the main constituents used for this study. The cellulosic fillers were obtained from yard cutting of a creeper plant, Argyreia speciose (local name Tezgam). The jute fabric was from waste packaging bags. The sustainable composite materials were fabricated using these materials by compression molding and their mechanical properties (tensile, flexural, and impact) were investigated. The developed composites showed remarkable mechcnaial perforrmance as compared to glass composites. Hence, the waste materials were effectively used to develop a value-added product with enhanced performance properties. These materials can be used to fabricate components for automotive interior, packaging, tabletop, etc.

Biography:

Mr. Sujit Sharma is a research scholar at the prestigious Indian Institute of Technology, Kharagpur, India. He completed his Bachelor of Technology degree in Chemical Engineering from the National Institute of Technology, Durgapur, India, in 2015. He acquired a Master of Technology in Rubber Technology from the Indian Institute of Technology, Kharagpur, India, in 2018. He did his B-tech project from Indian Oil Corporation Ltd. (Haldia Refinery), India, and M-tech project under IIT Kharagpur and ALP Nishikawa, Lalru, Punjab.

Abstract:

Extrusion is one of the most useful processes for making long polymeric product profiles. The profile deforms while extruding due to die swell based on the geometry of the die, thermal and rheological properties of the material, and predominantly on the thermal and rheological boundary conditions. The die swell behavior of the polymer is a critical characteristic in processing operations such as extrusion and injection molding. There are different kinds of swelling during the extrusion process. One is a recoil mechanism due to the elastic nature, and the other is a reorientation of the velocity profile from die inlet to free surface outlet. The soften polymeric compounds while flowing through a complex-shaped die it compresses and shears intensely, causing die-swelling phenomena on die exit. Moreover, the complexity of the rheological model for non-Newtonian fluids and boundary conditions for the fluid flow domain further intensifies the problem of die swell prediction. Extrusion industries usually design the die using conventional methods. These methods typically involve: 1) making the physical prototype of the die, 2) tuning it for flow balancing, and 3) repetitively testing it until attaining the desired product shape. Due to the recursive nature of this three-step designing process, it is relatively expensive and time-consuming. To address the issues mentioned above, and to achieve the desired shapes of the product, the Non-Newtonian fluid flow phenomena is of paramount importance to the die designers and engineers. Nowadays, computational fluid dynamic is becoming the most popular way to visualize the fluid flow behavior even for the complex die design as it quickly generates an indicated set of results. The various challenging profile shapes which are used to manufacture automotive parts can be studied easily by using the proper rheological parameters utilizing the FEA technique. In this work, it is attempted to develop a possible strategy for simulating the flow and predicted the required die design to obtain the desired extrudate shape by using the proper rheological parameters and boundary conditions. A computational method for 3D geometries using ANSYS Polyflow® is was developed to simulate the flow at different domains using remesh technique and predicted the overall deformation for polymeric compounds. Constitutive rheological models are fitted with the experimental data to acquire material constants collected from rheometers. The same study is performed for temperature-dependent rheological behavior using Arrhenius approximate law at different temperatures. Hence, it can be concluded that it will help to increase the production efficiency of the extrudate profile by reducing the traditional prototype trial and error method of manufacturing extrusion die for getting a desired shape of the product and also reduce the production cost.

Biography:

Abstract:

Biography:

Asra has completed her Masters level education at the age of 25 years from National University of Sciences and Technology, Islamabad, Pakistan as President Gold Medalist. She did her Bachelor studies in Polymer Engineering from National Textile University, Pakistan as Gold Medalist. She is currently serving as junior Lecturer in Department of Materials, National Textile University, Pakistan. She is also the incharge of Polymer Chatracterization Lab that holds many thermal and chemical analysis instruments. She has published more than 17 papers in reputed journals and contributed to three renowned Books. 

Abstract:

Biodegradable polymers are recommended as a solution of the problems posed by the commodity plastics because of their property to degrade in the environment. However, the low mechanical stability and high permeability of short molecules  (air and water) of biodegradable polymer lessen its applications in food packaging. A blend of biodegradable polymer (starch) with a commodity polymer (polypropylene) having enough mechanical strength and biodegradability, was prepared using a biodegradable additive as compatibilizer for food packaging application. Fatty Alcohol Ethoxylate (FAE) was used as a bridging molecule between starch and polypropylene (PP) and blends were prepared using melt extrusion technique. Starch was varied in PP matrix and the concentration of FAE was constant. The mechanical, morphological, permeability and biodegradability of prepared sheets were studied. Results showed that for 10 % compatibilizer, 20 % and 25 % starch in PP matrix showed highest mechanical strength that is 17.5 MPa. Highest biodegradation that is 14.56 % weight loss was observed after 90 days in the blend that contain 40 % starch. Air and water vapor permeability of all blends was much higher in contrast to pure PP. But addition of compatibilizer reduced the permeability to water and air molecules by increasing the uniformity in the sheets.