Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Two-Way Shape Memory Polymers : Evolution of Stress vs Evolution of Elongation

Title data

Posada Murcia, Andrés ; Uribe Gómez, Juan Manuel ; Sommer, Jens-Uwe ; Ionov, Leonid:
Two-Way Shape Memory Polymers : Evolution of Stress vs Evolution of Elongation.
In: Macromolecules. (2 June 2021) .
ISSN 1520-5835
DOI: https://doi.org/10.1021/acs.macromol.1c00568

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft IO 68/10-1
Deutsche Forschungsgemeinschaft IO 68/11-1
Deutsche Forschungsgemeinschaft SO 277/18-1

Abstract in another language

Stimuli-responsive polymers are a subject of numerous studies in recent decades due to its variety of possible applications ranging from nanomedicine, drug delivery systems, biosensing, to smart textile development and aerospace engineering. The current demand of reliable and easy-programmable polymeric-actuating components underlines the necessity to understand the mechanism that governs the actuation of materials. This work sheds new light on the understanding of the two-way shape memory effect (2W-SME) of cross-linked semicrystalline polymers. We investigated and compared melting/crystallization of cross-linked polycaprolactone under constant stress and constraint strain conditions. We observed three regions of behavior upon cooling: rubbery, semicrystalline, and an intermediate one associated with entropic softening of the network prior to crystallization. Based on obtained observations, we proposed possible mechanisms for the processes occurring in cross-linked polymers upon their crystallization/melting and quantitatively investigated the effects of applied stress, elongation, and cross-linking density to allow programmable design of reversible actuators.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Professor Biofabrication
Faculties > Faculty of Engineering Science > Professor Biofabrication > Professor Biofabrication - Univ.-Prof. Dr. Leonid Ionov
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 09 Jun 2021 07:31
Last Modified: 09 Jun 2021 10:48
URI: https://eref.uni-bayreuth.de/id/eprint/65695