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胺基修饰的阿塔普尔吉特对聚乳酸的结晶和超临界CO2发泡行为的影响
Qianjin Xiang1, Weijun Zhen1, Tengfei Shao1
1State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, 830017, Xinjiang, China.
International journal of biological macromolecules
|October 5, 2025
概括
化物修饰的阿塔普尔吉特 (A-ATP) 增强了多乳酸 (PLA) 泡. 这种新的填充剂改善了泡结构,机械强度和热性能,为高性能PLA材料提供了一种新的策略.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术纳米技术
背景情况:
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有泡应用的潜力.
- 提高PLA泡的性能需要有效的填充剂和加工技术.
- 阿塔普尔吉特 (ATP) 是一种具有材料改造潜力的天然粘土矿物.
研究的目的:
- 用于制备化物修饰的阿塔普尔吉特 (A-ATP) 作为聚乳酸 (PLA) 泡的填充剂.
- 研究A-ATP对PLA泡的结构,机械性能和热性能的影响.
- 通过分子动力学模拟,探索A-ATP对PLA泡形成的影响机制.
主要方法:
- 阿塔普尔吉特 (ATP) 通过酸洗,西兰合和化进行了修饰,以产生A-ATP.
- 使用FTIR,接触角度,XPS,XRD和TGA进行了A-ATP的表征.
- 使用超临界二氧化碳自闭柜泡技术制造了PLA/A-ATP纳米复合材料泡.
- 分析了泡结构,压缩性质,热行为 (DSC),质性质和CO2扩散.
主要成果:
- A-ATP表现出疏水性质 (接触角度从7°增加到70°) 和稳定的晶体结构.
- 0.6重%的A-ATP添加显著优化了PLA泡结构,减少了平均细胞大小.
- 压力强度和PLA/A-ATP泡的特定压力模量分别增加了99%和142%.
- A-ATP降低了PLA的冷结晶温度,将结晶度提高到17.94%,并改善了融流动性.
- 分子动力学模拟显示,A-ATP在PLA中增加了约55%的CO2扩散.
结论:
- 化物修饰的阿塔普尔吉特 (A-ATP) 是增强PLA泡的有效填充剂.
- A-ATP改善了PLA的泡形态,机械性能和热性能.
- 这项研究提出了开发高性能基于PLA的纳米复合材料泡的新策略.
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