新型双4-氨基) 基阿拉米德共聚物,具有增强的溶液可加工性.
Wonseong Song1, Amol M Jadhav2, Yeonhae Ryu1
1Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of Korea.
Nanomaterials (Basel, Switzerland)
|October 25, 2024
概括
为了薄膜应用,合成了两种新型的阿拉米德共聚合物MBAB-阿拉米德和PBAB-阿拉米德. 这些聚合物表现出优异的热稳定性和机械强度,使先进的材料开发成为可能.
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
- 有机化学 有机化学
背景情况:
- 阿拉米德共聚合物传统上用于高强度,高温纤维.
- 对于薄膜形式的可加工阿拉米德聚合物的需求日益增加,用于电绝缘和膜等应用.
- 现有的阿拉米德材料往往缺乏用于薄膜制造所需的可加工性.
研究的目的:
- 合成新型阿拉米德共聚合物,以提高薄膜应用的可加工性.
- 将柔性部分纳入阿拉米德骨干中,以促进极性有机溶剂中的聚合.
- 描述产生的薄膜的热和机械性能.
主要方法:
- 合成两种新型阿拉米德共聚合物,MBAB-阿拉米德和PBAB-阿拉米德,通过加入柔性 bis ((4-aminophenoxy) 基部分.
- 从合成的共聚合物制造超薄膜 (3-10微米).
- 使用动态机械分析 (DMA),热重力测量分析 (TGA) 和机械拉力分析进行表征.
主要成果:
- 合成的MBAB-aramid和PBAB-aramid的聚合度高,分子重量超过150kDa.
- 成功制造了厚度为3-10微米的超薄透明薄膜.
- 这些片表现出高的玻璃过渡温度 (MBAB-胺的270.1°C,PBAB-胺的292.7°C) 和热分解温度 (分别为449.6°C和465.5°C).
- 机械拉力分析显示了高拉力强度 (MBAB-胺为107.1 MPa,PBAB-胺为113.5 MPa),在断裂时具有显著的延伸.
结论:
- 新型的MBAB-胺和PBAB-胺共聚合物使得高强度,超薄膜的生产成为可能.
- 这些聚合物具有出色的热稳定性和机械性能,适合苛刻的应用.
- 聚合物结构线性差异影响分子间相互作用,影响热性能和机械性能.
- 这些材料在各种行业中为薄膜,膜和功能性涂层的应用提供了巨大的潜力.
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