Work

Simultaneous 4D printing and In-Situ foaming for tailoring shape memory behaviors in polylactic acid foams

Year: 2024

Type: article

Abstract: This study introduces an innovative 4D printing technique combined with in-situ foaming to enhance the shape memory properties of polylactic acid (PLA) foams. By melt mixing PLA with azodicarbonamide (AZO) below its decomposition temperature, followed by direct pellet printing, the research achieves uniform microporous structures and tailored shape memory behaviors. The findings demonstrate that higher AZO content improves shape fixity (∼96 %) but reduces shape recovery. Moreover, the programming temperature significantly influences performance, with hot programming enhancing shape fixity and cold programming boosting shape recovery. This novel approach offers potential applications in lightweight, thermally insulative, and shock-absorbing materials with programmable properties.

Source: Manufacturing Letters

DOI: 10.1016/j.mfglet.2024.11.005

Authors: Pedram Honari, Davood Rahmatabadi, Abbas Bayati, Erfan Rassi, Ismaeil Ghasemi, Majid Baniassadi, Mahdi Bodaghi, Mostafa Baghani

Institutions: University of Tehran, Amirkabir University of Technology, Iran Polymer and Petrochemical Institute, Nottingham Trent University

Language: English

Topic: Polymer composites and self-healing

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,690

OpenAlex ID: W4405121198

FWCI: 2.813

Cites: 7

Cited by: 27

Related to: 10