Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Effect of Core PTT Content on Mechanical Properties of PLA/PTT Sheath/Core Bicomponent Filaments

중심부 PTT 함량이 PLA/PTT 심초형 복합방사 섬유의 기계적 물성에 미치는 영향

  • Received : 2023.07.27
  • Accepted : 2023.09.12
  • Published : 2023.10.31
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Abstract

In this study, we investigated the effects of core polytrimethylene terephthalate (PTT) content on the mechanical properties of polylactic acid (PLA)/PTT sheath/core (s/c) bicomponent filaments to optimize sheath/core ratio of the filaments. The molecular dynamics simulation of each homo polymer has been performed to predict the tensile behaviour of the polymers, respectively. The maximum PTT content was 60 wt%, which was the best composition in terms of cross-section uniformity and tensile strength. The tensile strength of PLA/PTT s/c bicomponent filaments decreased with increasing PTT content up to 50 wt% and showed the maximum at PTT content of 60 wt% compared with homo PLA filaments. It is attributed that the spinning temperature was adjusted for the higher melting temperature polymer of PTT, causing decrease in melt viscosity of the sheath PLA. Hence, this leads to a less uniform cross-section for PLA/PTT s/c bicomponent filaments, having less than 60% of core PTT.

Keywords

Acknowledgement

본 연구는 산업통상자원부 산업기술국제협력 글로벌수요연계형 국제공동기술개발사업(P0022396)을 통해 수행되었으며, 이에 감사드립니다.

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