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生物基耐热尼龙5T/10T的合成,表征和结晶动力学
Bingxiao Liu1, Shuo Zhang1, Liqun Ma1
1Taiyuan Institute of Technology, Department of Materials Engineering Taiyuan 030008 China bxliunuc@163.com.
RSC advances
|June 16, 2023
概括
这项研究介绍了生物基尼龙5T/10T,一种耐热工程塑料. 同聚合可改善加工,并保持出色的热性能,为石化品提供可持续的替代品.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 对可持续材料的日益增长的需求需要替代化石燃料塑料.
- 石化塑料面临着环境问题和资源枯竭.
- 生物基工程塑料提供了一个有前途的可持续解决方案.
研究的目的:
- 开发一种生物基,耐热的工程塑料,提高加工能力.
- 通过将十甲二甲胺 (10T) 单位纳入聚甲二甲胺 (尼龙5T) 中,合成和表征一种新型共聚合物尼龙5T/10T.
- 调查10T单位对产生的共聚物体的热性质,结晶行为和晶体结构的影响.
主要方法:
- 尼龙5T/10T共聚物的化学合成.
- 使用富里埃变换红外光谱 (FTIR) 和13C-NMR进行结构确认.
- 分析热性能,包括化温度和结晶温度.
- 研究结晶动力学,激活能量和晶体生长模式.
主要成果:
- 尼龙5T/10T共聚合物已成功合成和表征.
- 加入10T单元改变了晶体生长模式,从二维光盘形 (尼龙5T) 变成二维光盘形或三维球形.
- 热性质,如化温度 (>280°C) 和结晶温度,在10T含量下显示出非线性变化.
- 结晶率和激活能量表现出对共聚合物组成的复杂依赖.
- 与整洁的尼龙5T和10T相比,尼龙5T/10T显示了更大的加工窗口.
结论:
- 生物基尼龙5T/10T提供了出色的耐热性和增强的可加工性.
- 同聚合物为传统工程塑料提供了一个可行的,可持续的替代品.
- 这项研究提供了关于生物基聚胺结构-性质关系的见解.
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