Chemical and Physical Characteristics of Four Weed Seed Fibers (Hemistepta lyrata, Imperata cylindrica var. koenigii, Metaplexis japonica and Typha latifolia)

지칭개, 띠, 박주가리, 큰부들 잡초종자섬유의 물리화학적 특성

  • Yoon, A Ra (Research Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology) ;
  • Lee, Min Woo (Research Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kim, Seul Ki (Research Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kim, Jin-Seog (Research Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology)
  • 윤아라 (한국화학연구원 융합화학연구본부 바이오화학연구센터) ;
  • 이민우 (한국화학연구원 융합화학연구본부 바이오화학연구센터) ;
  • 김슬기 (한국화학연구원 융합화학연구본부 바이오화학연구센터) ;
  • 김진석 (한국화학연구원 융합화학연구본부 바이오화학연구센터)
  • Received : 2014.09.22
  • Accepted : 2014.10.06
  • Published : 2014.12.31


In this study, we investigated several chemical and physical characteristics of 4 weed seed fibers; Hemistepta lyrata (HEMLY), Imperata cylindrica var. koenigii (IMPCK), Metaplexis japonica (METJA) and Typha latifolia (TYPLA). In chemical composition, there were 74 (TYPLA)-88.5% (METJA) of holocellulose, 17 (IMPCK)-24% (METJA) of lignin, 0.22 (METJA)-4.2% (IMPCK) of ash, 2.2 (HEMLY)-7.8% (IMPCK) of hot water extractives and 0.4 (IMPCK)-6.3% (TYPLA) of solvent extractives. Alpha-cellulose proportion to holocellulose was similar among weed seed fibers as 45-48%. The crystallinity index (CI) of raw seed fibers was 53.2 (TYPLA)-65.9% (HEMLY). However, CI of the chemical treated fibers (EDA fibers) was a little increased and showed 61.1 (IMPCK)-71.8% (METJA). The maximum thermal decomposition temperature (MTDT) of the raw seed fibers were 312, 321.8, 331.5 and $341.6^{\circ}C$ in METJA, TYPLA, HEMLY and IMPCK, respectively. But the MTDT of the EDA fibers were 327, 327, 341.7 and $360.0^{\circ}C$ in HEMLY, TYPLA, METJA and IMPCK, respectively. Taken together, they showed a similar or better characteristics compared to the reported or commercial natural fiber resourses. Accordingly, they seem to be practically applicable as renewable resources for a new natural fibers.


Chemical composition of weed seed fibers;Hemistepta lyrata;Imperata cylindrica var. koenigii;Metaplexis japonica;Typha latifolia


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