A series of thermoresponsive shape-memory photopolymers have been synthesized from the mixtures of two biobased monomers, tetrahydrofurfuryl acrylate and tridecyl methacrylate, with the addition of a small amount of 1,3-benzendithiol (molar ratio of monomers 0-10:0.5:0.03, respectively). Ethyl (2,4,6 trimethylbenzoyl) phenylphosphinate was used as photoinitiator. The calculated biorenewable carbon content of these photopolymers was in the range of (63.7-74.9)%. The increase in tetrahydrofurfuryl acrylate content in the photocurable resins resulted in a higher rate of photocuring, increased rigidity, as well as mechanical and thermal characteristics of the obtained polymers. All photopolymer samples showed thermoresponsive shape-memory behavior when reaching their glass transition temperature. The developed biobased photopolymers can replace petroleum-derived thermoresponsive shape-memory polymer analogues in a wide range of applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10056724 | PMC |
| http://dx.doi.org/10.3390/ma16062156 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Phloroglucinol-Based Antimicrobial Shape-Memory Photopolymers for Microimprint Lithography.
ACS Omega
December 2024
Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Rd. 19, 50254 Kaunas, Lithuania.
In this study, for the first time, biobased photopolymers were synthesized from phloroglucinol tris epoxy with and without different comonomers, phloroglucinol, 1,4:3,6-dianhydro-D-sorbitol, and 1,4-cyclohexanedimethanol. The rheological, thermal, mechanical, shape-memory, and antimicrobial properties of photopolymers were investigated. The addition of comonomers reduced the photocuring rate (gel time increased from 325 s to 434-861 s) and rigidity (storage modulus decreased from 330.
View Article and Find Full Text PDFAdvancing Food Packaging: Exploring Cyto-Toxicity of Shape Memory Polyurethanes.
Materials (Basel)
September 2024
Grupo de Química Macromolecular (LABQUIMAC), Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, CSIC, 48940 Leioa, Spain.
Cytotoxicity is a critical parameter for materials intended for biological applications, such as food packaging. Shape-memory polyurethanes (SMPUs) have garnered significant interest due to their versatile properties and adaptability in synthesis. However, their suitability for biological applications is limited by the use of aromatic isocyanates, such as methylene diphenyl 4,4'-diisocyanate (MDI) and toluene diisocyanate (TDI), which are commonly used in SMPU synthesis but can generate carcinogenic compounds upon degradation.
View Article and Find Full Text PDFApplication of Reversible Four-Dimensional Printing of Shape Memory Alloys and Shape Memory Polymers in Structural Engineering: A State-of-the-Art Review.
3D Print Addit Manuf
June 2024
Manipal Center of Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, India.
The rapid development and advancements in field of shape memory alloys (SMAA) has tremendously increased the progress in four-dimensional (4D) printing. The conventional 4D printing will require skilled manpower but utilization of reversibility aspect achieved using self adjusting external stimuli will eliminate the necessity of sophisticated devices and human intervention in 4D printing. The components created using reversible 4D printing can be reused after each recovery cycle that suits the current industry requirements.
View Article and Find Full Text PDFCharacterization of Anisotropic Shape Memory Behavior of Thermoresponsive Components in 4D Printing.
3D Print Addit Manuf
June 2024
Department of Mechanical and Industrial Engineering, University of Illinois Chicago, Illinois, USA.
Article Synopsis
- Four-dimensional (4D) printing enhances products by enabling them to change shape in response to certain stimuli, but there’s limited research on how different manufacturing process parameters affect these shape memory properties.* -
- This study focuses on the anisotropic behaviors (direction-dependent properties) of 4D printed structures, exploring how variables like scanning patterns and angles influence their shape fixity and recovery performance.* -
- Results indicate that a Triangle scanning pattern yields optimal shape memory behaviors, while smaller scanning angles help reduce anisotropy and fabrication time, although layer thickness has little impact on these properties.*
Shape memory cycle conditions impact human bone marrow stromal cell binding to RGD- and YIGSR-conjugated poly (glycerol dodecanedioate).
Acta Biomater
September 2024
Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, United States.
Article Synopsis
- Bioresorbable shape memory polymers (SMPs) like poly(glycerol dodecanedioate) (PGD) offer potential solutions for minimally invasive surgeries by facilitating tissue repair, but they require biocompatibility through the incorporation of bioactive ligands.
- In this study, specific cell-adhesive peptides (RGD and YIGSR) were conjugated to PGD, enhancing cell attachment and proliferation, particularly when both peptides were used together compared to single peptide applications.
- Results indicate that the shape memory cycle conditions affect the functionality and specificity of the peptides, with the arrangement of these peptides after recovery influencing their effectiveness in promoting cell binding, which is crucial for designing functionalized
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!