Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Determination of Wood Flour Content in WPC Through Thermogravimetic Analysis and Accelerator Mass Spectrometry

열중량 분석기와 질량가속기를 이용한 목재·플라스틱 복합재의 목질섬유함량 분석

  • Gwon, Jae-Gyoung (Department of Forest Products, National Institute of Forest Science) ;
  • Lee, Dan-Bee (Department of Forest Products, National Institute of Forest Science) ;
  • Cho, Hye-Jung (Department of Forest Products, National Institute of Forest Science) ;
  • Chun, Sang-Jin (Department of Forest Products, National Institute of Forest Science) ;
  • Choi, Don-Ha (Department of Forest Products, National Institute of Forest Science) ;
  • Lee, Sun-Young (Department of Forest Products, National Institute of Forest Science)
  • 권재경 (국립산림과학원 임산공학부) ;
  • 이단비 (국립산림과학원 임산공학부) ;
  • 조혜정 (국립산림과학원 임산공학부) ;
  • 전상진 (국립산림과학원 임산공학부) ;
  • 최돈하 (국립산림과학원 임산공학부) ;
  • 이선영 (국립산림과학원 임산공학부)
  • Received : 2017.07.28
  • Accepted : 2017.08.20
  • Published : 2017.09.25
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Abstract

Determination of the wood content in wood plastic composite (WPC) is crucial to form reliable WPC market. WPC with simple formulation consisting of only two components (wood flour and polypropylene) was examined using thermogravimetric analysis (TGA) and accelerator mass spectrometry (AMS) for determining wood content in the WPC. TGA method using derivative peak temperature (DTp) of polypropylene under low heating rate ($5^{\circ}C/min$) showed more reliable calibration curve and lower error factor compared to method of using the percentage of weight loss of wood flour. In addition, AMS using bio-based carbon content showed greater reliability for the determination of wood content in the WPC in comparison with the TGA method.

WPC 내 목질섬유 함량 분석은 신뢰도 높은 목재 플라스틱 복합재(WPC) 소비시장 형성을 위해 상당히 중요하다. 본 연구에서는 polypropylene과 목질섬유를 복합화한 단순 WPC 배합 조건에서 WPC 내 목질섬유 함량에 대한 분석을 TGA를 이용한 열분석 방법과 AMS를 이용한 바이오 탄소 함량 분석 방법을 통해 진행하였다. TGA를 통한 열분해 분석법은 $5^{\circ}C/min$의 승온속도로 고분자 PP의 최대 미분 온도를 이용하여 신뢰도 높은 WPC 내 목질섬유 함량에 관한 검량선을 얻을 수 있었다. TGA와 AMS의 분석 방법 비교에 있어서는, 바이오 탄소 함량을 이용하는 AMS 분석법이 더 높은 신뢰성을 보여주었다.

Keywords

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