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强大的,完全可生物降解的聚合物薄膜,通过在扩展性流动下形成相互连接的多纳米层结构来实现

Zhao-Bo Sun¹, Lei Li¹, Guo-Qi Ma¹

¹College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China.

ACS applied materials & interfaces

|August 5, 2023

概括

这项研究引入了可生物降解的聚乙烯酸盐-共甲 (PBAT) /聚乙烯酸盐 (PBS) 薄膜中的相互连接的多纳米层 (IMN) 结构. 这种新的制造方法显著提高了诸如撕裂强度等机械性能.

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
纳米技术纳米技术

背景情况:

在合成和天然材料中,多层结构对于物质操纵至关重要.
聚乙烯基酸盐-联合甲酸盐 (PBAT) 和聚乙烯酸盐 (PBS) 是具有不同特性的可生物降解聚合物.
实现可生物降解聚合物的增强机械性能仍然是一个关键的挑战.

研究的目的:

在PBAT/PBS混合物中设计和制造相互连接的多纳米层 (IMN) 结构.
调查扩展流在创建等级结构中的作用.
提高可生物降解薄膜的机械性能.

主要方法:

使用"造热拉伸"过程来诱导延伸流.
创建PBAT和PBS的连续混合物.
使用先进的技术分析等级结构 (相形态,晶体结构,状晶体).

主要成果:

通过控制的延伸流,成功形成了相互连接的多纳米层 (IMN) 结构.
证明延伸流促进PBAT纳米层上的PBS晶体的表轴生长,改善粘附.
由于延伸应力,观察到增强的结晶性和叶片厚.
在IMN片中实现了285.9 kN/m的破裂强度记录.

结论:

在PBAT/PBS混合物中,扩展性流量诱导的IMN结构提供了卓越的机械性能.
这种简单可扩展的制造方法为开发高性能可生物降解聚合物提供了有效的策略.
这种方法具有很大的潜力,可以推进具有出色综合性质的可持续材料.

关键词:

同一个连续结构的结构.延伸式流量延伸式流量相互连接的多纳米层.机械性能机械性能机械性能导航导航导航导向导向

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