通过生物化学甲潜力 (BMP) 测试来评估PHB丝及其3D打印板的无氧生物降解性
Anita Jena1, Anjaly P Thomas2, Bijaya Bikram Samal3
1Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
The Science of the total environment
|November 20, 2025
概括
使用可生物降解的聚合物,如聚3-基酸 (PHB) 的增材制造对可持续性有希望. 然而,化沉积物建模处理减少了PHB.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 环境科学 环境科学
背景情况:
- 可生物降解的聚合物在增材制造中为基于石油的塑料提供了可持续的替代品.
- 聚3-基酸盐 (PHB) 是一个有前途的可生物降解聚合物,用于3D打印应用.
- 了解加工对生物降解性的影响对于循环经济目标至关重要.
研究的目的:
- 评估沉积建模 (FDM) 处理对聚3-基酸盐 (PHB) 无氧生物降解性的影响.
- 为了比较PHB丝线与3D打印PHB样品的生物降解性.
- 研究加工PHB中的结晶性和生物降解性之间的关系.
主要方法:
- 福利埃变换红外光谱法 (FTIR) 和X射线衍射 (XRD) 用于材料特性.
- 生物化学甲潜力 (BMP) 测试在38°C进行了50天的测试.
- 测量无氧生物降解性和甲产生的ASTM D5511-18协议.
主要成果:
- 3D打印的PHB显示晶体性增加 (61.8%),与光纤 (40.9%) 相比.
- 生物降解百分比从发光线的78.24%降至3D打印板的70.35%.
- 在3D打印样本中,甲产量减少了10%,这是由于加工诱导的结晶性.
结论:
- FDM加工会增加PHB的结晶性,从而对其无氧生物降解性产生负面影响.
- 在更结晶的结构中,减少水和酶的可访问性限制了生物降解率.
- 优化加工参数是平衡可打印性和寿命末生物降解性的关键,以实现可持续的添加剂制造.
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