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联合氮杂迈克尔反应和自由基光聚合反应以增强3D打印形状记忆聚合物的机械性能。

Combined aza-Michael and radical photopolymerization reactions for enhanced mechanical properties of 3D printed shape memory polymers.

作者信息

Halbardier Lucile, Goldbach Emile, Croutxé-Barghorn Céline, Schuller Anne-Sophie, Allonas Xavier

机构信息

Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, Institut Jean Baptiste Donnet 3b rue Alfred Werner 68093 Mulhouse Cedex France

出版信息

RSC Adv. 2022 Oct 25;12(47):30381-30385. doi: 10.1039/d2ra05404c. eCollection 2022 Oct 24.

DOI:10.1039/d2ra05404c
PMID:36337947
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9593170/
Abstract

3D printed shape memory polymers (SMP) were formed by combining aza-Michael addition and light initiated radical polymerization. Amine consumption and acrylate conversion were monitored by H-NMR and Fourier transform infrared spectroscopies. Dynamic mechanical analysis and cyclic thermomechanical tensile tests enabled direct observation of the polymer network changes. Increased homogeneity of the 3D network and enhanced SMP properties were achieved after the reaction between residual acrylate functions trapped in the vitrified medium with the secondary amines formed during the process. This allows the fabrication of shape memory objects by 3D printing.

摘要

通过将氮杂迈克尔加成反应与光引发自由基聚合反应相结合，制备了3D打印形状记忆聚合物（SMP）。采用核磁共振氢谱（H-NMR）和傅里叶变换红外光谱对胺的消耗和丙烯酸酯的转化率进行了监测。动态力学分析和循环热机械拉伸试验能够直接观察聚合物网络的变化。在玻璃化介质中捕获的残余丙烯酸酯官能团与反应过程中形成的仲胺发生反应后，3D网络的均匀性增加，SMP性能得到增强。这使得通过3D打印制造形状记忆物体成为可能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/9d075768c99d/d2ra05404c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/5a0bf70b447d/d2ra05404c-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/f71110a3b6cb/d2ra05404c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/88a09fc5cb2e/d2ra05404c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/9d075768c99d/d2ra05404c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/5a0bf70b447d/d2ra05404c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/b3d3763096ff/d2ra05404c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/1e8d68959c56/d2ra05404c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/f71110a3b6cb/d2ra05404c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/88a09fc5cb2e/d2ra05404c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e349/9593170/9d075768c99d/d2ra05404c-f6.jpg

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