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Telechelic Polyethers by Living Polymerizations and Precise Macromolecular Engineering
Published in Sophie M. Guillaume, Handbook of Telechelic Polyesters, Polycarbonates, and Polyethers, 2017
Pierre J. Lutz, Bruno Ameduri, Frédéric Peruch
Polyoxymethylene (POM), also called polyformaldehyde or polytrioxane, has been known for more than 100 years and it was among the first synthetic polymers studied by Staudinger in the 1920s [304, 305]. Polyformaldehyde is the only polyacetal made on an industrial scale (over 500,000 tons a year worldwide at the end of the twentieth century). These polymers are engineering thermoplastics which have found broad use in traditional metal applications, thanks to their excellent tensile, impact, and compression strengths, and good abrasion and wear resistance. POM is highly crystalline (50%–60%) with a melting temperature around 180°C, which makes it insoluble in common organic solvents.
Tensile and water absorption properties of notched glass fiber/polypropylene and glass fiber/polyoxymethylene injection-molded composites
Published in The Journal of The Textile Institute, 2023
Yuanyi Shao, Yuying Dong, Defang Zhao, Yuqiu Yang
For automotive manufactures, fuel consumption and CO2 emission reduction have been strictly taken into consideration (Joo et al., 2020). Therefore, it is essential to decrease the weight of the automobile parts (Ishikawa et al., 2018). Glass fiber-reinforced plastics (GFRPs) are considered as an alternative material due to its comparatively high mechanical properties, lightweight, and low cost (Kuo et al., 2014). Recently, the interests of GFRPs using thermoplastics as matrix have been increased due to the advantages of thermoplastics, such as recyclability, high impact resistance, high fracture toughness, and post formability (Kazemi et al., 2019). Polypropylene (PP) has attracted the public attention as a matrix resin due to excellent chemical resistance, low price, and lightweight (Shao et al., 2020; Shi et al., 2020). Polyoxymethylene (POM) is commonly and widely used as the engineering thermoplastics manufactured by injection molding in automotive and other fields because of its high hardness and high stiffness (Kuo et al., 2014; Pielichowska, 2015). However, POM has poor thermal stability, because it has a linear molecular chain based on repeated –CH2O– units which is easy to break under the effect of heat (Pielichowska, 2015; Wang et al., 2016).