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UV-curing Behaviors and Mechanical Properties of UV-cured Polylactic Acid (PLA) 원문보기

목재공학 = Journal of the Korean wood science and technology, v.41 no.2, 2013년, pp.134 - 140  

Lee, Seung-Woo (Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture & Life Science, Seoul National University) ,  Park, Ji-Won (Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture & Life Science, Seoul National University) ,  Park, Cho-Hee (Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture & Life Science, Seoul National University) ,  Kim, Hyun-Joong (Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture & Life Science, Seoul National University) ,  Eom, Young-Geun (Department of Forest Products & Biotechnology, College of Forest Science, Kookmin University)

Abstract ▼ AI-Helper 아이콘AI-Helper

UV curing was introduced via a chemical treatment by adding small amounts of a hexafunctional acrylic monomer and a photoinitiator to improve the mechanical properties of PLA. This study also employed a semi-interpenetrated structured polymer network through the process of UV-curing. The UV curing b...

주제어

#polylactic acid (PLA)   #UV curing   #chemical crosslinking   #hexafunctional acrylic monomer   #mechanical properties   #semi-IPN structure  

AI 본문요약
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제안 방법

  • The main objective of this study is to improve and modify film produced from PLA by adding a hexafunctional monomer to enhance the mechanical properties of PLA. The UV-curing behaviors are investigated using FTIR-ATR spectroscopy and gel fraction determination. Also, the tensile strength was investigated with different hexafunctional acrylic monomer contents and UV doses.
  • The resolution of the recorded spectra was 4 cm-1. The curing behavior of the UV-curable PLA film was analyzed by observing the changes in the deformation of the C=C bonds at 810 cm-1. Also, all FTIR-ATR spectra were modified by means of baseline correction.
  • The main objective of this study is to improve and modify film produced from PLA by adding a hexafunctional monomer to enhance the mechanical properties of PLA. The UV-curing behaviors are investigated using FTIR-ATR spectroscopy and gel fraction determination.

대상 데이터

  • 24 g/m3 was purchased from Nature Works LLC. Dipentaerythritol hexacrylate (DPHA, Miwon Specialty Chemical, Republic of Korea) was used as the hexafunctional monomer. Fig.

이론/모형

  • The tensile test was done according to ASTM D638-08 with a texture analyzer (Micro Stable Systems, TA-XT2i) at a crosshead speed of 5 mm/min and room temperature. Five specimens were measured to determine the value and the deviations.
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