Recent Advances in Green Composites and Their Applications

Abstract

Conventional petroleum-based toxic and non-biodegradable composites in comparison with natural fiber composites and hybrid natural fiber composites find attraction in the automobile industry, manufacturing, aerospace, sporting goods, construction, and marine applications due to the lower ecological risks. Green composites have the challenge of replacing conventional materials like steel, wood, and non-biodegrading polymers. Specific material features of green composites for particular loading and load-bearing applications are reviewed including the properties and performances of various potential biopolymers and natural reinforcement elements. The applications of green composites in short lifespan products, sporting equipment, and the biomedical field are highlighted with detailed examples.

Development of a High‐Frequency Polytetrafluoroethylene (PTFE)‐Based Laminate With An Ultra‐Low Dielectric Constant by Combination of Ceramic Hollow Spheres and PTFE Resin

“…T i is the mean value of the different factors at different levels and t i value is one fifth of T i . The range value (R‐value) is the difference value between the maximum and minimum values of t i (t i,max –t i,min ) [13] . The R values in Table 2 show that the KH560 content has the greatest influence on the modification effect (settling height), followed by the volume ratio of ethanol/water, and finally, the pH.…”

Polymer-ceramic composites for bone challenging applications: Materials and manufacturing processes

“…These materials are increasingly employed in therapeutic devices, including temporary implants and three-dimensional scaffolds for tissue engineering. [8][9][10][11] Biopolymers, derived from living organisms, encompass a wide range of sources, such as plants like corn and soybeans, certain trees, and even certain bacteria. [12][13][14][15] Numerous studies have demonstrated the potential of biopolymers in bone tissue engineering, primarily attributed to their biocompatibility, biodegradability, and ability to mimic the extracellular matrix of natural bone.…”

Exploring the Potential of Copper Slag and Quartz as Fine Aggregate Replacements in Concrete: A Comprehensive Study

“…These models apply to variable ranges, such as quartz powder substitution (0-20% by cement weight), quartz sand substitution (0-50% by crushed limestone weight), and water curing temperatures (from 25 • C to 95 • C) [15][16][17]. In this study, an attempt has been made to find out the compressive strength of the cube with different proportions of copper slag and quartz with a cement-concrete mix design [18][19][20][21].…”