Spectroscopic and Thermo–Mechanical Studies of Liquid Crystal Elastomer

Gharde, Rita A.; Mani, Santosh A.; Jessy, P J; Amare, Jyoti R.; Keller, Patrick

doi:10.4028/www.scientific.net/kem.659.495

Cited by 3 publications

(2 citation statements)

References 15 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different physical properties of LCE have been studied by various researchers [35][36][37][38][39][40][41][42][43][44][45], but the current applications of the material show that the research work that has so far been done on it is very insufficient. In the present study, an attempt was made to investigate the optical, thermal, and mechanical properties of monodomain NLCE so as to understand the physical behavior of this material and to develop new applications of it.…”

Section: Introductionmentioning

confidence: 99%

Study of the optical, thermal, and mechanical properties of nematic liquid crystal elastomers

Mani

Hadkar

Jessy

et al. 2016

Journal of Information Display

Self Cite

View full text Add to dashboard Cite

In the present study, the optical, thermal, and mechanical properties of liquid crystal elastomers (LCEs) were investigated using various techniques. The presence of functional groups in LCE was studied using Fourier transform infrared spectroscopy. The phase transition temperatures were confirmed via polarizing optical microscopy and Fabry-Perot scattering studies. The differential thermal analysis was used for investigating the thermal behavior. A dynamic mechanical analysis was used to study the mechanical properties of LCE. The significant mechanical changes with a considerable reversible effect were observed for this soft material. The changes in the mechanical shape with the temperature are attributed to the change in the phase of the LCE material. ARTICLE HISTORY

show abstract

Section: Introductionmentioning

confidence: 99%

Study of the optical, thermal, and mechanical properties of nematic liquid crystal elastomers

Mani

Hadkar

Jessy

et al. 2016

Journal of Information Display

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, polarized Fourier-transform infrared spectroscopy (FTIR) has been adopted to characterize the macromolecular structure of LCEs, ,,− wherein each FTIR scan can be generated within one second to enable near real-time characterizations. During the tests, LCE samples are exposed to polarized light.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Alignment and Reorientation of Polymer Chains in Liquid Crystal Elastomers

Luo

Chung

Yakacki

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Liquid crystal elastomers (LCEs) exhibit soft elasticity due to the alignment and reorientation of mesogens upon mechanical loading, which provides additional mechanisms to absorb and dissipate energy. This enhanced response makes LCEs potentially transformative materials for biomedical devices, tissue replacements, and protective equipment. However, there is a critical knowledge gap in understanding the highly rate-dependent dissipative behaviors of LCEs due to the lack of real-time characterization techniques that probe the microscale network structure and link it to the mechanical deformation of LCEs. In this work, we employ in situ optical measurements to evaluate the alignment and reorientation degree of mesogens in LCEs. The data are correlated to the quantitative physical analysis using polarized Fourier-transform infrared spectroscopy. The time scale of mesogen alignment is determined at different strain levels and loading rates. The mesogen reorientation kinetics is characterized to establish its relationship with the macroscale tensile strain, and compared to theoretical predictions. Overall, this work provides the first detailed study on the time-dependent evolution of mesogen alignment and reorientation in deformed LCEs. It also provides an effective and more accessible approach for other researchers to investigate the structural-property relationships of different types of polymers.

show abstract

Revealing the Unusual Rate-Dependent Mechanical Behaviors of Nematic Liquid Crystal Elastomers

Chung

Luo

Yakacki

et al. 2023

Preprint

View full text Add to dashboard Cite

Spectroscopic and Thermo–Mechanical Studies of Liquid Crystal Elastomer

Cited by 3 publications

References 15 publications

Study of the optical, thermal, and mechanical properties of nematic liquid crystal elastomers

Study of the optical, thermal, and mechanical properties of nematic liquid crystal elastomers

Real-Time Alignment and Reorientation of Polymer Chains in Liquid Crystal Elastomers

Revealing the Unusual Rate-Dependent Mechanical Behaviors of Nematic Liquid Crystal Elastomers

Contact Info

Product

Resources

About