Scholarlink

<p>The present study investigates the fatigue behaviour, thermal conductivity, and in-situ swelling and degradation characteristics of silane-modified <i>Nephrolepis exaltata</i> microfiber reinforced PLA biocomposite filaments fabricated for fused deposition modelling (FDM). Microfibers extracted from <i>Nephrolepis exaltata</i> stems were incorporated into PLA at different volume fractions (10 and 15 vol%) with untreated and silane-treated conditions. The prepared composite filaments were extruded and used to fabricate specimens through FDM printing. Mechanical and performance evaluations including fatigue strength, thermal conductivity, and in-situ swelling and degradation behaviour were carried out according to ASTM standards. The results revealed that the incorporation of microfiber significantly enhanced the fatigue resistance and thermal conductivity while reducing moisture-induced swelling and degradation. Among all composites, the PF22 composite (15 vol% silane-treated microfiber) exhibited the best performance with approximately 55–60% improvement in fatigue resistance and 71% higher thermal conductivity compared with neat PLA. Furthermore, swelling and degradation were reduced by nearly 50% and 47% respectively relative to PF0. Response Surface Methodology (RSM) was employed to optimize the microfiber volume fraction and surface treatment conditions. The optimization results confirmed that 15 vol% silane-treated microfiber provides the optimum balance of mechanical durability and environmental stability. The developed PLA biocomposite filament demonstrates significant potential for additive manufacturing applications requiring improved thermal performance, durability, and moisture resistance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fatigue, thermal conductivity and in-situ swelling and degradation behavior of RSM-optimized silane-modified Nephrolepis exaltata microfiber reinforced PLA biocomposite filaments for fused deposition modelling

  • 期刊论文

  • 发表日期：

    2026年7月13日

查看全文
  • G. Godwin,
  • G. Antony Miraculas

摘要

The present study investigates the fatigue behaviour, thermal conductivity, and in-situ swelling and degradation characteristics of silane-modified Nephrolepis exaltata microfiber reinforced PLA biocomposite filaments fabricated for fused deposition modelling (FDM). Microfibers extracted from Nephrolepis exaltata stems were incorporated into PLA at different volume fractions (10 and 15 vol%) with untreated and silane-treated conditions. The prepared composite filaments were extruded and used to fabricate specimens through FDM printing. Mechanical and performance evaluations including fatigue strength, thermal conductivity, and in-situ swelling and degradation behaviour were carried out according to ASTM standards. The results revealed that the incorporation of microfiber significantly enhanced the fatigue resistance and thermal conductivity while reducing moisture-induced swelling and degradation. Among all composites, the PF22 composite (15 vol% silane-treated microfiber) exhibited the best performance with approximately 55–60% improvement in fatigue resistance and 71% higher thermal conductivity compared with neat PLA. Furthermore, swelling and degradation were reduced by nearly 50% and 47% respectively relative to PF0. Response Surface Methodology (RSM) was employed to optimize the microfiber volume fraction and surface treatment conditions. The optimization results confirmed that 15 vol% silane-treated microfiber provides the optimum balance of mechanical durability and environmental stability. The developed PLA biocomposite filament demonstrates significant potential for additive manufacturing applications requiring improved thermal performance, durability, and moisture resistance.