Scholarlink

<p>In this study, nano-hydroxyapatite (n-HAp) was extracted from pink perch fish scales (PPFS) using a simple and efficient alkaline hydrolysis method. The obtained n-HAp was characterized through XRD, FTIR, Raman spectroscopy, TGA, SEM, and TEM. Various concentrations of n-HAp (0.25, 0.5, 0.75, and 1 wt%) were then incorporated into a polylactic acid (PLA) matrix using solution blending followed by blown film extrusion. The influence of n-HAp on the thermal, mechanical, and biodegradable properties of the PLA-based composites was systematically analyzed. FTIR and Raman spectroscopy confirmed chemical bonding between n-HAp and the PLA matrix in the blown films. Thermal analysis via TGA revealed an increase in the initial degradation temperature compared to neat PLA, attributed to the presence of n-HAp. DSC analysis showed a reduction in glass transition temperature and crystallinity, which restricted polymer chain mobility and increased the amorphous phase. Mechanical property evaluation through tensile testing demonstrated that lower concentrations of n-HAp significantly enhanced elongation at break, with PLA_HAp 0.75 exhibiting improved flexibility and an increase in elongation compared to neat PLA. A 180-day soil biodegradability study indicated that incorporating 0.5 wt% n-HAp into the PLA matrix accelerated the hydrolysis process by 500%, enhancing the overall degradation of the PLA_HAp composite film. These findings highlight the potential of n-HAp in improving the functional properties of PLA-based composites for food packaging 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

Investigations on Thermomechanical and Biodegradable Properties of Alkaline Hydrolysis Isolated Nano Hydroxyapatite Reinforced Polylactic Acid Composite Blown Films for Sustainable Packaging

  • 期刊论文

  • 发表日期：

    2026年2月20日

查看全文
  • Radhika Panickar,
  • Devotha Mwazembe,
  • Benny Alexander,
  • Edwin Freeman,
  • Desmond Mortley,
  • Vijaya Rangari

摘要

In this study, nano-hydroxyapatite (n-HAp) was extracted from pink perch fish scales (PPFS) using a simple and efficient alkaline hydrolysis method. The obtained n-HAp was characterized through XRD, FTIR, Raman spectroscopy, TGA, SEM, and TEM. Various concentrations of n-HAp (0.25, 0.5, 0.75, and 1 wt%) were then incorporated into a polylactic acid (PLA) matrix using solution blending followed by blown film extrusion. The influence of n-HAp on the thermal, mechanical, and biodegradable properties of the PLA-based composites was systematically analyzed. FTIR and Raman spectroscopy confirmed chemical bonding between n-HAp and the PLA matrix in the blown films. Thermal analysis via TGA revealed an increase in the initial degradation temperature compared to neat PLA, attributed to the presence of n-HAp. DSC analysis showed a reduction in glass transition temperature and crystallinity, which restricted polymer chain mobility and increased the amorphous phase. Mechanical property evaluation through tensile testing demonstrated that lower concentrations of n-HAp significantly enhanced elongation at break, with PLA_HAp 0.75 exhibiting improved flexibility and an increase in elongation compared to neat PLA. A 180-day soil biodegradability study indicated that incorporating 0.5 wt% n-HAp into the PLA matrix accelerated the hydrolysis process by 500%, enhancing the overall degradation of the PLA_HAp composite film. These findings highlight the potential of n-HAp in improving the functional properties of PLA-based composites for food packaging applications.