즉, 메테인술폰산 용매에 고분자와 무기물을 넣고 초음파 처리하여 잘 분산시킨 후 90℃에서 교반하여 용해시켰다.
That is, polymers and inorganic substances were put in a methanesulfonic acid solvent, sonicated, dispersed well, and was stirred at 90°C to dissolve.