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Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ËŒ p É’ l i ˈ jÊŠÉ™r É™ ËŒ θ eɪ n,-j ʊəˈr É› θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.
The spacing between domains has been confirmed by small-angle X-ray scattering, a technique which gives information about microstructure. Since most polymers are incompatible with one another, forming a block polymer will usually result in phase separation, and the principle has been widely exploited since the introduction of the SBS block ...
Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease, and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
Foam rubber (also known as cellular rubber, sponge rubber, or expanded rubber) is rubber that has been made with a foaming agent so that its structure is an air-filled matrix. Commercial foam rubber is generally made of synthetic rubber, natural latex, or polyurethane. Latex foam rubber, used in mattresses, is well known for its endurance.
The term, a portmanteau of elastic polymer, [2] is often used interchangeably with rubber, although the latter is preferred when referring to vulcanisates. [3] Each of the monomers which link to form the polymer is usually a compound of several elements among carbon , hydrogen , oxygen and silicon .
Fabric content ranges from 80% polyester non-woven (100% recycled ultra-microfiber) and 20% non-fibrous polyurethane to 65% polyester and 35% polyurethane, depending on the product line. Ultrasuede feels like natural suede , but it is resistant to stains and discoloration; it can be washed in a washing machine. [ 3 ]
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