エネルギー効率の高いCO₂隔離と室内空気浄化のためのtert-ブチルアミン官能化階層ナノアクリル共重合体

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:三級アミン官能化ラテックスの設計指針とCO2化学吸着(重炭酸塩生成)の機構理解に有用。

🏢実務担当者:低エネルギー固体CO2吸着材の素材候補として、化学・素材企業のR&D検討に参考となる。

🏛政策担当者:DACや室内空気質対策の技術オプションとしてCCUS政策の材料イノベーション動向を把握できる。

<title>Abstract</title> <p>The increasing concentration of the greenhouse gas carbon dioxide (CO₂) in the atmosphere, as a result of human activities such as the combustion of fossil fuels, requires novel approaches for carbon capture, utilization, and storage. Liquid amine scrubbing is the state-of-the-art technology for CO₂ capture; however, its large-scale industrialization is impeded by an immense energy demand for regeneration and accelerated equipment corrosion. These limitations hinder the potential of post-combustion amine-based scrubbing for decentralized direct air capture and indoor air quality applications. Herein is proposed a sustainable and efficient solid-state adsorbent for ambient CO₂ capture based on a novel polymeric composite synthesized by controlled seeded semi-batch emulsion polymerization of styrene, butyl acrylate, acrylic acid (AA), and glycidyl methacrylate (GMA). The incorporation of tertiary-butyl amine (TBA) instead of the ubiquitous ammonium hydroxide during neutralization was found to suppress undesired epoxide ring-opening side reactions, while introducing high concentration of functional tertiary amine sites for CO₂ capture. The polymer composite microstructure and physicochemical properties were elucidated in detail using a combination of dynamic light scattering (DLS), zeta potential, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), wide-angle X-ray diffraction (WAXRD), atomic force microscopy (AFM) phase imaging, and thermogravimetric analysis coupled with differential scanning calorimetry (TGA/DSC). It was found that the incorporation of TBA into the latex polymer matrix results in increased ionic crosslinking sites, leading to a higher glass transition temperature (Tg = 146 °C) and an overall more amorphous and dispersed composite structure. Remarkably, while the ammonium functionalized latex composite showed almost no CO₂ capture ability (0-3%), the TBA sample demonstrated a tremendously high performance with 49.2% CO₂ removal at 30 °C. Moreover, low-temperature TGA confirmed the occurrence of chemical absorption of CO₂ through the formation of the bicarbonate complex. Overall, the work demonstrates the underlying mechanisms of polymer composite formation and CO₂ capture abilities of a novel smart anti-carbonation latex composite material based on the modification of the latex matrix with tertiary amines for the first time and provides a platform for future development of sustainable air quality management technologies.</p>

• Research Square https://doi.org/10.21203/rs.3.rs-11040259/v1first seen 2026-10-17 04:22:35 · last seen 2026-10-27 04:25:52