Browse Topic: Biomaterials
A new bioink has been designed for engineering human skin constructs using norbornene-pullulan-based hydrogels. The researchers introduced a novel photocrosslinkable bioink designed for engineering human skin constructs, based on thiol-norbornene-pullulan (N-PLN) formulations combined with various crosslinkers
A wearable health monitor can reliably measure levels of important biochemicals in sweat during physical exercise. The 3D-printed monitor could someday provide a simple and non-invasive way to track health conditions and diagnose common diseases, such as diabetes, gout, kidney disease or heart disease
Natural fiber-reinforced composites are increasingly used in the automotive and aerospace industries since more studies focus on them because they are environmentally benign. The primary benefit of natural fibers over synthetic fibers is their biodegradability. In addition to meeting other standards, natural fiber-reinforced composites have high thermal and mechanical qualities. The current study’s main objective has been to investigate one such natural fiber-reinforced polymer. Biomaterials constructed of Abutilon indicum fiber reinforced with polyester were created in the current work. The test samples with the materials above underwent mechanical and thermal investigations to determine their strengths. The impact of alkali treatment (NaOH) on the fibers was also investigated and assessed. Compared to other samples such as 5, 10, and 15 g of fiber loadings the 20 g of fiber loading reveals the highest mechanical properties such as 59.21 MPa tensile, 72.45 MPa of bending, and 11.25 kJ
The experimental investigation aims to improve natural composite materials aligned with feasible development principles. These composites can be exploited across several industries, including the automobile and biomedical sectors. This research employs date seed powder and neem gum powder as reinforcing agents, along with polyester resin as the base material. The fabrication route comprises compression moulding, causing the production of the natural composite material. This study focuses extensively on mechanical characteristics such as tensile strength, flexural strength, hardness, and impact resistance to undergo comprehensive testing. Furthermore, the chemical properties of the composites are examined using the FTIR test to gain understanding by integrating different proportions of date seed powder (5%, 10%, 15%, and 20%) and neem gum powder (0%, 3%, 6%, and 9%) in the matrix phase. These investigation goals are to evaluate the strength and performance of the fabricated composite
Living materials made by housing biological cells within a nonliving matrix have gained popularity as scientists recognize that often the most robust materials are those that mimic nature. Researchers have now used 3D printers and a novel bioprinting technique to print algae into living, photosynthetic materials that are tough and resilient
Researchers have engineered a bandage that captures and holds a pro-healing molecule at the site of a bone break to accelerate callus formation and vascularization to achieve better bone repair by three weeks. The research points toward a general method for improving bone repair after damage that could be applied to medical products, such as biodegradable bandages, implant coatings, or bone grafts for critical defects
Isosorbide is a renewable material derived from sorbitol, which is obtained from glucose. Isosorbide (Dianhydro-D-glucitol) is a nontoxic diol produced from bio-based feedstocks that is biodegradable and thermally stable. The purpose of this research is to formulate polyurethane for use in composites or coatings that contain isosorbide as part or all of the polyol phase and can be easily molded or cast into a film at ambient conditions. This research also explores the possibility of using isosorbide as a drop-in replacement for a commercial polyol in a polyurethane formulation. The raw materials used in this study are detailed in the accompanying table
Transporting a single brick to Mars is extremely expensive, making the future construction of a Martian colony seem impossible. Scientists have now developed a way to potentially overcome this problem by creating a concrete-like material made of extraterrestrial dust along with the blood, sweat, and tears of astronauts
Scientists have found a way to use sunflower pollen to develop a 3D printing ink material that could be used to fabricate parts useful for tissue engineering, toxicity testing and drug delivery. This pollen-derived ink is able to hold its shape when deposited onto a surface, making it a viable alternative to current inks used for 3D printing in the biomedical field (also known as bioprinting). Such inks are usually soft and delicate, making it a challenge to retain the final product’s desired 3D shape and structure as the bioprinter deposits the ink layer by layer
Fiorenzo Omenetto, Frank C. Doble Professor of Engineering at Tufts University School of Engineering, Dean of Research, and Director of the Tufts Silklab led a team that has produced an array of printable microwave resonators using silk-based metamaterials
Efforts to shift from petrochemical plastics to renewable and biodegradable plastics have proven tricky — the production process can require toxic chemicals and is expensive, and the mechanical strength and water stability is often insufficient. Now, researchers have used wood byproducts to produce more durable and sustainable bioplastics
A team has developed a theoretical model to design soft materials that demonstrate autonomous oscillating properties that mimic biological functions. The work could advance the design of responsive materials used to deliver therapeutics as well as for robot-like soft materials that operate autonomously
Scientists have made an antibacterial gel bandage using the discarded husks of durian, a tropical fruit. Durian has a thick husk with spiky thorns that is discarded, while the sweet flesh surrounding the seeds on the inside is considered a delicacy
A healthcare-acquired infection (HAI) is commonly defined as any infection that is contracted while receiving any form of healthcare. HAIs are a seemingly unavoidable consequence of the modern healthcare system, which is designed to house and treat the most at-risk populations. Especially during times of crisis such as the current COVID-19 pandemic, surging hospital admissions raise concern that HAIs may also be on the rise
Scientists have created a paper-like material derived from pollen that can alter its mechanical characteristics in response to external stimuli. Combined with digital printing, pollen paper may hold promise for the fabrication of a new generation of programmable natural actuators — components in a machine that are responsible for moving and controlling a mechanism
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