12th International Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing: Sustainable Materials from Agriculture based Precursors
Sponsored by: ACerS Engineering Ceramics Division
Program Organizers: Surojit Gupta, University of North Dakota; Rajiv Asthana, University of Wisconsin; Mritunjay Singh, Ohio Aerospace Institute; Tatsuki Ohji, AIST; Enrico Bernardo, University of Padova; Zhengyi Fu, Wuhan University of Technology; Hisayuki Suematsu, Nagaoka University of Technololgy; Tatami Junichi, Yokohama national university; Yiquan Wu, Alfred University; Allen Apblett, Oklahoma State University
Monday 2:00 PM
November 2, 2020
Room: Virtual Meeting Room 20
Location: MS&T Virtual
Session Chair: Surojit Gupta, University of North Dakota
2:00 PM Invited
Processing and Mechanical Characterization of Continuous Natural Fiber Reinforced Composites: Satoshi Kobayashi1; 1Systems Design, Tokyo Metropolitan University
Continuous natural fiber reinforced plastics (cNFRP) has attracted much attention as an alternative of glass fiber reinforced plastics for sustainable development. In the present study, new fabrication method, such as “micro-braiding technique”, was developed to obtain an intermediate materials called “micro-braided yarn (MY)”. MY consists of a central natural fiber yarn braided with thermoplastic fiber yarns. After heat forming of Moby’s, the thermoplastic fiber yarns become matrix. We focused on the heat forming condition on the mechanical properties of cNFRP. A reinforcement and matrix were hemp and poly(lactic acid) fiber yarns, respectively. Tensile shear and interfacial shear tests were conducted on the specimens. Strength increased with increasing forming temperature and forming pressure. On the other hand, successive forming temperature and pressure thermally and mechanically degraded reinforcing fiber yarns. There was a positive correlation between tensile strength and interfacial strength, however no relation was observed between modulus and interfacial strength.
2:40 PM
On the Design of Porous Materials by Using Agriculture Based Precursors: Surojit Gupta1; 1University of North Dakota
Biomass has become an important source of raw material for designing novel materials. The important constituents of raw materials are cellulose, hemicellulose, and lignin. In this presentation, I will use lignin as a case study and review different types of materials which can be designed from lignin. Some examples are lignin based composites, foams, and tailored nano-particles. It is expected that these materials can be used for multi-functional applications.
3:10 PM
A Sustainable and Energy-efficient Electrochemical Technology for Dewatering of Cellulosic Nanomaterials: Santosh Vijapur1; Huong Le1; Timothy Hall1; Jennings Taylor1; Maria Inman1; Stephen Snyder1; Kim Nelson2; 1Faraday Technology Inc; 2AVAPCO LLC
Cellulose is abundantly available natural resource that can be utilized for a variety of industrial applications. Although cost effective to produce, a need has been identified by manufacturers to develop energy-efficient, dewatering of cellulosic nanomaterials, as cellulosic nanomaterials are not economical to ship long distances while containing significant water content (>95 wt.%). An electrochemical assisted sustainable and energy efficient dewatering technology is currently under development. Innovative reactor designs are utilized to demonstrate the feasibility of a cost-effective, industrially viable, and energy efficient ElectroDewatering approach capable of generating 20-30 wt.% final solids, that can be rehydrated under vortex and re-dispersed. Material properties (structure, particle size) were maintained by the dewatered cellulosic nanomaterials. Implementing sophisticated electric fields, energy use was reduced by 50% compared to conventional approaches at similar or higher dewatering performance.