한국섬유공학회지 (Textile Science and Engineering)

  • 제58권1호
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  • Pages.48-55
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  • 2021
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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Poly(lactic acid) 부직포의 수분 침지온도 및 처리시간에 따른 분해특성 연구

A Study on the Decomposition Characteristics of Poly(lactic acid) Nonwoven Fabrics According to Water Soaking Temperature and Treatment Time

  • 남택욱 (충남대학교 유기소재.섬유시스템공학과) ;
  • 전민홍 (충남대학교 유기소재.섬유시스템공학과) ;
  • 이승구 (충남대학교 유기소재.섬유시스템공학과) ;
  • 주창환 (충남대학교 유기소재.섬유시스템공학과)
  • Nam, Taek Wook (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Jeon, Min Hong (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Lee, Seung Goo (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Joo, Chang Hwan (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
  • 투고 : 2021.01.30
  • 심사 : 2021.02.20
  • 발행 : 2021.02.28
⟨ 이전 논문 다음 논문 ⟩

초록

Polylactic acid (PLA), a biodegradable polymer, has been widely used for disposable applications as a replacement for nondegradable polymers. The decomposition of biodegradable polymers is mainly carried out by composting, photolysis, and hydrolysis under given environmental conditions. The purpose of this study is to investigate the effect of water treatment on the tensile and thermal properties of needle-punched PLA nonwoven fabrics. The PLA nonwoven fabric was immersed in water at various temperatures and treatment times. The morphology and thermal and mechanical properties of the PLA nonwovens were examined by scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and a tensile tester according to the water immersion conditions. The results showed that when the water treatment time increased, the tensile strength and tear force of the PLA nonwoven fabric decreased significantly. Crystallinity analysis showed that the decomposition of PLA nonwovens was due to molecular chain cleavage of the α and β phases. Depending on the decomposition environment, the weight reduction of PLA nonwovens by water treatment was very high, while the decrease in tensile strength was proportional to the weight reduction. Therefore, the decomposition of PLA during water treatment was confirmed to be very significant.

키워드

참고문헌

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