공업화학 (Applied Chemistry for Engineering)

  • 제26권5호
  • /
  • Pages.549-556
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  • 2015
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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분무건조법을 이용한 한약추출물 해충기피 실리카 졸의 다공성 방충입자의 제조

Preparation of Porous Anti-Insect Repellent Powder Using Spray Drying of Medicinal Herbal Extracts Anti-Insect Repellent Silica Sol

  • 투고 : 2015.06.05
  • 심사 : 2015.09.01
  • 발행 : 2015.10.10
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초록

한약재에서 추출한 해충기피용액과 실리카를 혼합하여 해충기피 실리카 졸을 제조하고, 분무건조법을 이용하여 마이크로 단위의 해충기피용액이 포함된 다공성 구형 분말을 제조하였다. 분무건조법을 통해 제조된 해충기피 분말의 특성분석을 위해 해충기피 졸의 농도(해충기피용액, 실리카) 및 분무 건조 장비의 조건에 따라 분말 모폴로지, 입자크기별 입경분포, 열적 안정성 분석을 실시하였다. 해충기피 졸의 농도가 4, 7 wt% 및 10 wt%일 때 각각 평균 입자 크기가 8.3, $9.5{\mu}m$ 및 $11.7{\mu}m$ 순으로 농도가 증가할수록 분말의 직경이 커졌다. 반면에 빠른 가스 주입속도 상태에서 노즐입구온도 및 용액주입속도 증가에 의한 분말 입경의 증가는 미미하였다. 또한, 열중량 분석법을 통하여, 구형의 다공성 분말 안에 해충기피 용액이 담지 되어있고, 이들은 $200^{\circ}C$까지 열적 안정성이 확보됨을 확인하였다. 분무건조를 통한 해충기피 분말은 평균 $9{\sim}10{\mu}m$이고, 열적 안정성을 가지므로 컴파운딩 및 필름제조공정에 응용이 가능할 것으로 기대된다.

Anti-insect repellent silica sol from mixture with silica and anti-insect repellent solution extracted from medicinal herbs was prepared. The micron size porous sphere powder with anti-insect repellent solution was prepared by the spray drying method. The characteristic of anti-insect repellent powder using spray drying method was analyzed by FE-SEM, PSA, TGA with the concentration of anti-insect repellent sol (anti-insect repellent solution and silica) and conditions of spray drier. The average particle size of 4, 7 wt% and 10 wt% of anti-insect repellent sol concentration were 8.3, $9.5{\mu}m$ and $11.7{\mu}m$, respectively. The particle size is increasing with high concentration of anti-insect repellent sol. Other hands, particle size as the temperature of inlet nozzle and velocity of sol injection were nearly same at high velocity of gas injection. Also, Anti-insect repellent impregnation in porous sphere powder were confirmed by TGA methode and its thermal property was stable up to $200^{\circ}C$. We expect that anti-insect repellent powder is applied for plastic compound and process of film manufacture.

키워드

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