Scholarlink

<p>The timber industry yields substantial amount of sawdust which acts as a source of pollution without proper management. One of the possible applications of the waste material is in using it as a reinforcing filler in biopolymer composites and thereby fostering the circular economy. However, the brittle nature of such material creates hinderance in its mass production and prevents its widespread commercial use. To address the shortcoming, this study explored the novel application of silly putty as a plasticizing additive in polylactic acid (PLA)-sawdust based composites. The addition of 5 wt% silly putty to PLA significantly increased the blend and the composite’s elongation at break by up to 280% and 100% respectively in comparison to PLA. Compared to the PLA/sawdust composite, PLA/silly putty/sawdust composite exhibited fewer voids and irregularities on the fracture surface. The surface roughness for the PLA/silly putty/sawdust composite reduced to 36.8&#xa0;nm compared to 185.8&#xa0;nm for PLA/sawdust composite. The improved surface finish of an extruded material is critical for its functionality and aesthetics. The water contact-angle of the novel composite increased to 76.5° from 68.4° of native PLA/sawdust composite. Biocompatibility assays revealed that the developed product is not cytotoxic and, therefore, it is not expected to be hazardous upon exposure.</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

Valorization of hardwood sawdust as a reinforcing filler in Melt-Extruded Poly (Lactic acid) based composites using silly putty as a plasticizing additive

  • 期刊论文

  • 发表日期：

    2026年1月4日

查看全文
  • Manoj Kumar Dhal,
  • Abhishek Singh,
  • Arnab Banerjee,
  • Kshitij Madhu,
  • Parul Shukla,
  • Amit Kumar,
  • Vimal Katiyar

摘要

The timber industry yields substantial amount of sawdust which acts as a source of pollution without proper management. One of the possible applications of the waste material is in using it as a reinforcing filler in biopolymer composites and thereby fostering the circular economy. However, the brittle nature of such material creates hinderance in its mass production and prevents its widespread commercial use. To address the shortcoming, this study explored the novel application of silly putty as a plasticizing additive in polylactic acid (PLA)-sawdust based composites. The addition of 5 wt% silly putty to PLA significantly increased the blend and the composite’s elongation at break by up to 280% and 100% respectively in comparison to PLA. Compared to the PLA/sawdust composite, PLA/silly putty/sawdust composite exhibited fewer voids and irregularities on the fracture surface. The surface roughness for the PLA/silly putty/sawdust composite reduced to 36.8 nm compared to 185.8 nm for PLA/sawdust composite. The improved surface finish of an extruded material is critical for its functionality and aesthetics. The water contact-angle of the novel composite increased to 76.5° from 68.4° of native PLA/sawdust composite. Biocompatibility assays revealed that the developed product is not cytotoxic and, therefore, it is not expected to be hazardous upon exposure.