基于光聚合技术的含有高性能聚合物的形状记忆材料 4D 打印技术

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED
Alena N. Nikishina , Bato Ch. Kholkhoev , Kseniia N. Bardakova , Zakhar A. Matveev , Zhanna I. Kurdanova , Kamila T. Shakhmurzova , Azamat A. Zhansitov , Svetlana Yu. Khashirova , Peter S. Timashev , Vitaliy F. Burdukovskii
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引用次数: 0

摘要

高性能芳香族杂链聚合物是一种工程热塑性塑料,具有优异的机械性能和热性能,在从航空航天到生物医学等各个领域都引起了极大的兴趣。然而,要在此类聚合物的基础上三维打印出具有新性能特征的材料,还存在许多困难。在此,我们开发了一些基于高性能聚醚酰亚胺(PEI)或聚砜(PSU)、反应性功能单体(N,N-二甲基丙烯酰胺)和低聚物(双酚 A 聚氧乙烯醚二丙烯酸酯)的新型光敏组合物(PSCs)。研究表明,使用所开发的 PSC 可以通过液晶三维打印技术形成具有高打印分辨率的三维结构。随后在 250°С 温度下对三维打印的绿色状态样品进行 1 小时的热后固化,可制造出具有最高拉伸强度(达 41.9 ± 3.1 兆帕)、玻璃化转变温度(141 °C)和热稳定性(350 °C以上)的材料。此外,三维打印结构还具有高温形状记忆效应,其形状固定率为 99%,形状恢复率高达 97.1%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Photopolymerization-based 4D-printing of shape-memory materials containing high-performance polymers

Photopolymerization-based 4D-printing of shape-memory materials containing high-performance polymers

High-performance aromatic heterochain polymers are engineering thermoplastics with exceptional mechanical and thermal properties that have attracted great interest in various areas ranging from aerospace to biomedicine. However, there have been a number of difficulties to 3D-print materials based on such polymers with new promising performance characteristics. Herein, a number of new photosensitive compositions (PSCs) based on high-performance polyetherimide (PEI) or polysulfone (PSU), reactive functional monomer (N,N-dimethylacrylamide) and oligomer (bisphenol A ethoxylate diacrylate) has been developed. It has been shown that the use of the developed PSCs allows the formation of 3D-structures with high printing resolution by LCD 3D-printing. Subsequent thermal post-curing of 3D-printed green-state samples at 250°С for 1 h led to the fabrication of materials with the highest tensile strength (up to 41.9 ± 3.1 MPa), glass transition temperature (141 °C) and thermal stability (above 350 °C). In addition, 3D-printed structures demonstrate high-temperature shape memory effect with shape fixity ratio > 99% and shape recovery ratio up to 97.1%.

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来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
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