Cyclic and monotonic testing of free and constrained recovery properties of a chemically crosslinked acrylate

Arrieta, J. Sebastian; Diani, Julie; Pierre, Guillaume

doi:10.1002/app.39813

Cited by 17 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In structural and aerospace applications [12,13] the capability to perform a mechanical work and the control of the shape-recovery process are highly demanded to properly tailor materials for specific conditions. However, one of the major drawbacks is to fulfil both, high ultimate strength and strain.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems

et al. 2015

View full text Add to dashboard Cite

This paper presents a new methodology to develop "thiol-epoxy" shape-memory polymers (SMPs) with enhanced mechanical properties in a simple and efficient manner via "click" chemistry by using thermal latent initiators. The shape-memory response (SMR), defined by the mechanical capabilities of the SMP (high ultimate strength and strain), the shape-fixation and the recovery of the original shape (shape-recovery), was analyzed on thiol-epoxy systems by varying the network structure and programming temperature. The glass transition temperature (T g ) and crosslinking density were modified using 3-or 4-functional thiol curing agents and different amounts of a rigid triglycidyl isocyanurate compound. The relationship between the thermo-mechanical properties, network structure and the SMR was evidenced by means of qualitative and quantitative analysis. The influence of the programming temperature (T prog ) on the SMR was also analyzed in detail. The results demonstrate the possibility of tailoring SMPs with enhanced mechanical capabilities and excellent SMR, and intend to provide a better insight into the relationship between the network structure properties, programming temperature and the SMR of unconstrained (stress-free) systems; thus, making it easier to decide between different SMP and to define the operative parameters in the useful life.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In some cases, the recovery stress follows a similar pattern to strain recovery, i.e., gradually approaches to a plateau (Ivens et al, 2011;Yang and Li, 2014a). In some other cases, however, "stress undershoot" (Arrieta et al, 2014;Liu et al, 2006;Tobushi et al, 2001;Véchambre et al, 2011) and "stress overshoot" (Castro et al, 2010;Li and Nettles, 2010;Li and Uppu, 2010;Qi et al, 2008) are observed. Considering the fact that in a two-phase composite SMP, when the M A N U S C R I P T…”

Section: Recovery/heating Stepmentioning

confidence: 84%

Temperature and rate dependent thermomechanical modeling of shape memory polymers with physics based phase evolution law

Yang

2016

International Journal of Plasticity

View full text Add to dashboard Cite

“…The results are consistent with some of the previous findings. For example, the level of deformation strongly affects the memorized stress, and lowering the temperature of prestrain fixation has a strong effect on the stress memory in constraint recovery . For amorphous cross‐linked SMPs, the stress memory ability strongly depends on the set of crosslinks.…”

Section: Resultsmentioning

confidence: 99%

“…In some other cases, however, “stress undershoot” and “stress overshoot” are observed. For example, the recovery stress of a stretching programmed SMP can even decrease during initial heating and then increase . In addition, the recovery stress of compression programmed SMP can experience an overshoot, i.e., a stress peak appears during the recovery process .…”

Section: Introductionmentioning

confidence: 99%

Stress memory of a thermoset shape memory polymer

Wang

2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

The performance of stress recovery and shape recovery are equally important for high performance shape memory polymers (SMPs) in emerging applications. However, unlike shape recovery, stress recovery does not always follow a monotonic behavior, i.e., “stress plateau,” “stress overshoot,” and “stress undershoot” can be observed. In order to reveal the complicated stress memorization and recovery behavior, this study employs a phenomenological model which considers the recovery stress as the sum of residual programming stress, memorized stress, thermal stress, and relaxed stress for amorphous crosslinked SMPs. This model is demonstrated by a stress recovery experiment in which a polystyrene based SMP was programmed at two prestrain levels above the glass transition temperature, i.e., 20% (neo‐Hookean hyperelastic region) and 50% (strain‐hardening region), and two fixation temperatures, i.e., 20°C (below Tg) and 45°C (within the Tg region), respectively. In addition, a clear distinction between the memorized stress and recovery stress is presented. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42112.

show abstract

Cyclic and monotonic testing of free and constrained recovery properties of a chemically crosslinked acrylate

Cited by 17 publications

References 33 publications

Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems

Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems

Temperature and rate dependent thermomechanical modeling of shape memory polymers with physics based phase evolution law

Stress memory of a thermoset shape memory polymer

Contact Info

Product

Resources

About