Scholarlink

<p>To assess the mechanical recyclability of poly(butylene succinate) (PBS), the polymer was subjected to five successive melt processing cycles using a twin-screw extruder. Samples collected from each cycle were fully characterized. Size exclusion chromatography (SEC) analysis revealed a slight increase in PBS molar mass, a trend corroborated by a concurrent decrease in melt flow index (MFI) values and an increase in gel fraction in recycled samples. These findings suggest the formation of crosslinked polymer chains during reprocessing. Dynamic mechanical analysis (DMA) further confirmed these structural changes, showing a significant increase in the glass transition temperature indicative of restricted molecular mobility. Mechanical tests demonstrated that recycled PBS exhibited slightly reduced stiffness compared to the virgin material. Despite this minor trade-off, the study highlights PBS’s potential as a mechanically recyclable biopolymer, with reprocessing-induced structural modifications offering opportunities to tailor its properties for circular economy applications.</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

Branching and crosslinking effects on the properties and reuse potential of recycled, biobased and biodegradable poly(butylene succinate) (PBS)

  • 期刊论文

  • 发表日期：

    2026年3月18日

查看全文
  • Maud Plouzeau,
  • Edgar Pigeon,
  • Delphine Barbier,
  • Laurent Cauret

摘要

To assess the mechanical recyclability of poly(butylene succinate) (PBS), the polymer was subjected to five successive melt processing cycles using a twin-screw extruder. Samples collected from each cycle were fully characterized. Size exclusion chromatography (SEC) analysis revealed a slight increase in PBS molar mass, a trend corroborated by a concurrent decrease in melt flow index (MFI) values and an increase in gel fraction in recycled samples. These findings suggest the formation of crosslinked polymer chains during reprocessing. Dynamic mechanical analysis (DMA) further confirmed these structural changes, showing a significant increase in the glass transition temperature indicative of restricted molecular mobility. Mechanical tests demonstrated that recycled PBS exhibited slightly reduced stiffness compared to the virgin material. Despite this minor trade-off, the study highlights PBS’s potential as a mechanically recyclable biopolymer, with reprocessing-induced structural modifications offering opportunities to tailor its properties for circular economy applications.