composite materials

 

 

  UAMMI announces composites 202 class in September Utah Advanced Materials and Manufacturing Initiative  (UAMMI) announces a new class,  Composites 202 , that is taking placing at the Davis Technical College – Applied Science Building (Kaysville, Utah) on Sept. 27, 2022 from 8:00 a.m. – 12:00 p.m. MDT.  Presented by UAMMI, and sponsored by Davis Technical College, the  Institute for Advanced Composites Manufacturing Innovation  (IACMI, Knoxville, Tenn., U.S.) and  Composites One  (Schaumburg, Ill., U.S.), the free class will cover six processes: Vacuum infusion processing Filament winding Roll wrapping Bladder molding Curing with a hot bonder Thermoplastics During the class, the basic nature of composites and the most common materials that are used will be explained. There will also be a discussion on the advantages composites bring compared to other structural materials, and a non-technical overview on how composites are designed ...

  How are Corn Husks Used in Different Materials? In a paper recently published in the  Journal of Cleaner Production , researchers reviewed corn byproducts and outlined the effect of chemical treatment and the corn husks’ chemical composition. They further evaluated the prospects and limitations of corn husks as well as future research directions. Background Mounting environmental concerns have prompted the extensive use of agricultural wastes to make sustainable and eco-friendly products. The utilization of agricultural wastes reduces their accumulation along with minimizing environmental pollution risks. Corn husk is derived from the world’s second-largest crop: maize. The prospect of producing fibers using corn husks has been scrutinized due to their low expense and abundant availability. The stalks and husks of corn plants have been used to generate natural cellulosic fibers for the textile industry, among others. Moreover, since lignocellulosic material can be sourced fr...

 

 

 

  Researchers Create a Bacterial Cellulose Composite with Added Graphene Oxide Background Cellulose, a readily available and cheap biopolymer synthesized by plants, is primarily obtained by recycling used paper and processing deciduous and coniferous trees. However, supporting substances, such as hemicellulose and pectin, typically co-exist with plant-based cellulose. Although such a chemical composition does not adversely impact the application potential of plant-based cellulose (PC), products with 100% cellulose content, such as BC, are often preferred over PC when used as a biomaterial. Different bacteria, including Gram-positive bacteria such as  Sarcina  and Gram-negative bacteria such as  Agrobacterium  and  Gluconacetobacter   xylinus , can synthesize BC. Almost 59 bacterial strains from ripe vegetables and fruits can synthesize BC. Cellulose with better structural and physicochemical properties can be synthesized in vitro using the cell-free en...

 

 

  Taking an Energy Efficient, Green Chemistry Approach to Nanocomposite Synthesis An Introduction to Graphene Graphene is an atomically thin, two-dimensional honeycomb film of sp 2  hybridized atoms of carbon. It has been found to have great mechanical strength, excellent electrical conduction, molecular barrier properties, and other beneficial qualities. The difficulty in fabrication, low solubility, and aggregation tendencies of graphene have made its utilization difficult. Graphene oxide (GO) is a graphene derivative with different oxygenated functional groups. GO offers several benefits over pure graphene, including facile fabrication, greater solubility and the capability of surface functionalization. These qualities have uncovered endless possibilities for utilizing GO in nanocomposite materials. Benefits of Using Metallic Nanoparticles Metallic nanoparticles (NPs) have various benefits in the field of electrochemist...

  Cornell researchers engineer a biohybrid composite material that mimics natural tissue Producing biomaterials that match the performance of cartilage and tendons has been an elusive goal for scientists, but a new material created at Cornell demonstrates a promising new approach to mimicking natural tissue. The results were published July 8 in the  Proceedings of the National Academy of Sciences , and provide a new strategy for synthesizing clinical solutions for damaged tissue. Tissue has to be soft enough to bend and flex, but durable enough to withstand prolonged loading – for example, the weight a knee tendon must support. When tissue wears out or is damaged, collagen hydrogels and synthetic materials have the potential to serve as replacements, but neither alone possesses the right combination of biological and mechanical properties of natural tissue. Now, Cornell researchers have engineered a biohybrid composite material with the essential characteristics of a natural t...