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Bioplastics

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Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...

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Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture

Published on: July 10, 2013

可回收的RAFT 3D打印可以回收.

Xiaofeng Pan¹, Xinggang Luo¹, Xiangqiang Pan¹

¹State Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Department of Polymer Science and Engineering, College of Chemistry Chemical Engineering and Materials Science, Soochow University China chemjji@suda.edu.cn chemzhujian@suda.edu.cn.

Chemical science

|October 2, 2025

概括

本研究介绍了一种可回收的3D打印方法,使用可逆添加-碎片化链转移 (RAFT) 阶段增长聚合. 该系统允许材料回收和再循环,创造了一个可持续的聚合物制造平台.

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Last Updated: Jun 11, 2026

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科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
可持续的制造业可持续的制造业

背景情况:

聚合物制造面临着可持续性挑战,需要可回收的3D打印解决方案.
目前的方法往往缺乏有效的回收途径,用于3D打印的聚合物对象.

研究的目的:

开发一种闭环3D打印策略,利用可逆添加碎片化链转移 (RAFT) 阶段增长聚合.
通过动态共价化学来证明3D打印聚合物网络的可回收性和可回收性.

主要方法:

通过RAFT聚合,将动态的三碳酸链接纳入聚合物网络中.
聚合物网络的回收和再生使用405nm辐射和多余的RAFT剂.
再生的寡合体与乙烯基单体的重新交叉连接,用于材料重建和再循环.
基于数字光处理 (DLP) 开发的树脂的3D打印.

主要成果:

实现了一个闭环可回收的3D打印系统,具有可调整的机械性能 (Young的模量:0.78835 MPa).
已证明有反应性寡合物的成功再生,并随后重新交叉连接到原始或回收聚合物结构中.
展示了印刷后的功能和擦除功能,突出了系统的动态和"活"性质.
验证了一种无催化剂的模块化方法,消除了对专门动态共价单体的需求.

结论:

开发的基于RAFT的3D打印策略为可回收聚合物制造提供了一个实用和可持续的平台.
该系统可实现高效的材料回收和再循环,解决3D打印中关键的可持续性挑战.
聚合物网络的"活"和动态性质为印刷后的修改和材料设计提供了多功能性.