聚 (乳酸) 复合物与氨酸和纳米氨酸通过现场反应处理合成
Sofia P Makri1,2, Eleftheria Xanthopoulou2, Miguel Angel Valera3
1Creative Nano PC, 43 Tatoiou, Metamorfosi, 14451 Athens, Greece.
Polymers
|May 27, 2023
概括
这项研究开发了使用纳米线素和反应加工的先进的聚乳酸 (PLA) 复合材料. 纳米线素通过在位环开放聚合 (ROP) 增强了PLA结晶,机械强度和抗氧化性能.
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
- 生物复合材料是一种生物复合材料.
背景情况:
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有越来越多的应用.
- 提高PLA性能通常需要有效的填充剂分散和集成.
- 来自生物质的成份 - - 氨酸具有作为强化填充剂的潜力,但面临着分散的挑战.
研究的目的:
- 为了合成和表征含有素和纳米素的聚乳酸 (PLA) 复合物.
- 通过反应处理将传统的融混合与现场环开聚合 (ROP) 进行比较.
- 评估纳米线素和ROP对PLA复合材料性能的影响.
主要方法:
- 通过常规融混合和现场ROP反应加工制备的复合材料.
- 通过扭矩测量监测ROP;反应时间小于20分钟,通过加倍催化剂减少到<15分钟.
- 鉴定包括SEM,DSC,纳米印染,DPPH测定,DRS,GPC和NMR.
主要成果:
- 反应性加工使得PLA复合材料的快速合成 (<20分钟) 成为可能.
- 与融混合对应物相比,含纳米素的复合材料表现出更好的结晶,机械和抗氧化性能.
- SEM,GPC和NMR证实了ROP合成复合材料的改善分散和分子特性.
结论:
- 在现场通过反应处理进行ROP是一种高效的方法,用于制造高性能PLA复合材料.
- 纳米线素作为ROP中的宏发起剂,导致PLA移植的颗粒和增强的填充剂分散.
- 这种方法显著改善了基于PLA的纳米素复合材料的整体性能.
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