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Fuse beads are small cylindrical plastic beads that fit tightly onto an array of pegs. [6] The arrangement of pegs on the board constrains the possible patterns that can be produced on that board. Most fuse-beading is done on a square grid pegboard, but there are other arrangements like hexagonal grids. [4]
A microbead imaged using scanning electron microscopy. Microbeads are manufactured solid plastic particles of less than one millimeter in their largest dimension [4] when they are first created, and are typically created using material such as polyethylene (PE), polyethylene terephthalate (PET), nylon (PA), polypropylene (PP), and polymethyl methacrylate (PMMA). [5]
Ion-exchange resin beads. An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange, that is also known as an ionex. [1] It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
The "gaudy plastic jewelry, toys, and other mementos [are] tossed to the crowds from parading floats". The 'throws', consist of necklaces of plastic beads, coins called doubloons, which are stamped with krewes' logos, parade themes and the year, plus an array of plastic cups and toys such as Frisbees, figurines and LED trinkets.
Dynabeads were developed after John Ugelstad managed to create uniform polystyrene spherical beads (defined as microbeads) of exactly the same size, [1] [2] at the University of Trondheim, Norway in 1976, something otherwise only achieved by NASA [3] in the weightless conditions of SkyLab. Dynabeads are typically 1 to 5 micrometers in diameter.
While thought to be decorative, Mardi Gras beads hanging on trees are harmful to the plant as a whole. When the parade season ended in 2014, the New Orleans city government spent $1.5 million to pick up about 1,500 tons of Mardi Gras-induced waste, consisting mostly of beads. [1] This is a recurring problem every year for the city.