…They are usually spherical or amorphous with a mesh size of 20 to 50, and the backbone polymer is insoluble by crosslinking. Depending on the type of exchange group, they are classified as cation-exchange resins (corresponding to acids) and anion-exchange resins (corresponding to alkalis). Depending on the acidity or basicity, they are further classified as strong acid cation-exchange resins (those with sulfonic acid groups), weak acid cation-exchange resins (those with carboxylic acid groups, phosphonic acid groups, or phosphinic acid groups), strong basic anion-exchange resins (those with quaternary ammonium groups), and weak basic anion-exchange resins (those with primary, secondary, or tertiary amine groups). … *Some of the terminology that mentions "anion-exchange resin" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…通常20~50メッシュの球状,あるいは無定形であり,骨格高分子は橋架けにより不溶化されている。交換基の種類によって,陽イオン交換樹脂cation‐exchange resin(酸に相当する)と陰イオン交換樹脂anion‐exchange resin(アルカリに相当する)に分類される。さらにその酸性度または塩基性度によって,強酸性陽イオン交換樹脂(スルホン酸基をもつもの),弱酸性陽イオン交換樹脂(カルボン酸基,ホスホン酸基,ホスフィン酸基をもつもの),強塩基性陰イオン交換樹脂(第四アンモニウム基をもつもの),弱塩基性陰イオン交換樹脂(第一,第二,第三アミン基をもつもの)に分けられる。… ※「anion-exchange resin」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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