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  2. Porphyrin - Wikipedia

    en.wikipedia.org/wiki/Porphyrin

    Porphyrin. Porphine, the parent porphyrin. Porphyrins ( / ˈpɔːrfərɪn / POR-fər-in) are a group of heterocyclic, macrocyclic, organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges ( =CH− ). In vertebrates, an essential member of the porphyrin group is heme, which is a ...

  3. Polyvinylidene fluoride - Wikipedia

    en.wikipedia.org/wiki/Polyvinylidene_fluoride

    Polyvinylidene fluoride or polyvinylidene difluoride ( PVDF) is a highly non-reactive thermoplastic fluoropolymer produced by the polymerization of vinylidene difluoride. Its chemical formula is (C 2 H 2 F 2) n . PVDF is a specialty plastic used in applications requiring the highest purity, as well as resistance to solvents, acids and hydrocarbons.

  4. Acrylate polymer - Wikipedia

    en.wikipedia.org/wiki/Acrylate_polymer

    Acrylate polymer. An acrylate polymer (also known as acrylic or polyacrylate) is any of a group of polymers prepared from acrylate monomers. These plastics are noted for their transparency, resistance to breakage, and elasticity. Acrylate polymer is commonly used in cosmetics, such as nail polish, as an adhesive. [1]

  5. Breast binding - Wikipedia

    en.wikipedia.org/wiki/Breast_binding

    Breast binding, also known as chest binding, is the flattening and hiding of breasts with constrictive materials such as cloth strips or purpose-built undergarments. Binders may also be used as alternatives to bras or for reasons of propriety. People who bind include women, trans men, non-binary people, and cisgender men with gynecomastia .

  6. Hydroxyl-terminated polybutadiene - Wikipedia

    en.wikipedia.org/wiki/Hydroxyl-terminated_poly...

    Hydroxyl-terminated polybutadiene ( HTPB) is an oligomer of butadiene terminated at each end with a hydroxyl functional group. It reacts with isocyanates to form polyurethane polymers. HTPB is a translucent liquid with a color similar to wax paper and a viscosity similar to corn syrup. The properties vary because HTPB is a mixture rather than a ...

  7. Textile - Wikipedia

    en.wikipedia.org/wiki/Textile

    A baby wearing many items of soft winter clothing: headband, cap, fur-lined coat, scarf and sweater. Textiles are various materials made from fibers and yarns. The term "textile" was originally only used to refer to woven fabrics, but today it covers a broad range of subjects. [1]

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