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[화학&고분자_유화 비법서]계면활성제 합성 및 응용기술_122 Anionic surfactants have evolved since their industrialization in 1817 by BASF. Initially used in textiles, their applications now span industries such as cosmetics, construction, and food. Their affordability, ease of manufacture, and excellent properties have made them staples in detergents and industrial cleaners. The primary functional groups are carboxylic acids, sulfate esters, and sulfoni.. 더보기
[화학&고분자_유화 비법서]계면활성제 합성 및 응용기술_121 Surfactants are synthesized from hydrophobic raw materials derived from animal/plant oils or petroleum, combined with hydrophilic groups. Their production involves processes like sulfonation and esterification to create anionic, cationic, nonionic, or amphoteric surfactants. Environmental concerns have shifted the focus to eco-friendly and biodegradable surfactants, especially for home and indus.. 더보기
[화학&고분자_유화 비법서]계면활성제 합성 및 응용기술_120 Surfactants are classified into ionic (anionic, cationic, amphoteric) and non-ionic types and are composed of hydrophilic and hydrophobic parts that alter the properties of surfaces and interfaces. Major application fields include textiles, household detergents, paper manufacturing, pesticides, pharmaceuticals, paints, cosmetics, and food, with textiles and household detergents accounting for th.. 더보기
[승리의 기술] 불패의 리더이순신, 그는 어떻게 이겼을까_119 The Battle of Nojong was the final battle of General Yi Sun-shin, where the Joseon navy was victorious against the Japanese forces, but Yi Sun-shin was killed in the process. During the battle, he was wearing only a red ironclad jacket without his armor, which led to rumors of suicide. Yi Sun-shin was a war hero and gained the hearts of the people, so his death brought great sadness to the Joseo.. 더보기
[승리의 기술] 불패의 리더이순신, 그는 어떻게 이겼을까_118 The Battle of Myeongnyang was a significant historical battle fought on September 16th, 1597, between General Yi Sun-shin and a large fleet of Japanese ships. Despite the overwhelming numbers of the enemy forces, Yi Sun-shin utilized the narrow waters and strong currents of the Myeongnyang Strait to overcome the numerical disadvantage. With only 13 ships, he successfully defeated over 100 Japane.. 더보기
[승리의 기술] 불패의 리더이순신, 그는 어떻게 이겼을까_117 On August 18th, 1597, Yi Sun-shin was appointed as the commander of the three provinces' naval forces and was given 12 ships following the defeat at the Battle of Chilchonryang. Despite his dire health, he personally led the battles and managed to fend off the Japanese forces, boosting the morale of the Joseon navy. He then moved to Byokpa Island, where he successfully repelled a Japanese ambush.. 더보기
[승리의 기술] 불패의 리더이순신, 그는 어떻게 이겼을까_116 In the Battle of Chilchonryang in 1597, the Joseon navy was annihilated by a surprise attack by the Japanese forces. After the arrest of Yi Sun-shin, Won Gyun was appointed as the new commander of the three provinces' naval forces. However, his tactics were inadequate, and the Japanese forces took advantage of this to lure and ambush the Joseon navy. As a result, Won Gyun was killed, and numerou.. 더보기
[승리의 기술] 불패의 리더이순신, 그는 어떻게 이겼을까_115 In 1593, as the Japanese naval frontline became stationary, Admiral Yi Sun-shin managed to blockade the sea routes, significantly diminishing the Japanese military's ability to sustain their war efforts. The Japanese forces gradually regrouped and amassed a formidable fleet of around 900 ships in the South Sea. In response, Yi Sun-shin opted for a strategy of blockading the Kyong Nyeong strait, .. 더보기

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