Effect of Molding Temperature on Shape Memory Performance of SMPC

2020 ◽  
Vol 209 (1) ◽  
pp. 30-39
Author(s):  
Yuqin Ma ◽  
Jie Wang ◽  
Shuangshuang Li ◽  
Juan Ma ◽  
Yatao Zhao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Memory Performance ◽  
Molding Temperature

Effect of Carbon Nanotubes on the Shape Memory Performance of Poly(vinylidene fluoride)/Acrylic Blends

2013 ◽  
Vol 30 (2) ◽  
pp. 134
Author(s):  
Hui FU ◽  
Jishan QIU ◽  
Ning CHONG ◽  
Yaqing WANG ◽  
Yuanyuan TIAN ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Shape Memory ◽  
Vinylidene Fluoride ◽  
Memory Performance ◽  
Poly Vinylidene Fluoride

scholarly journals Bio-Based Epoxy Shape-Memory Thermosets from Triglycidyl Phloroglucinol

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 542 ◽  
Author(s):  
David Santiago ◽  
Dailyn Guzmán ◽  
Francesc Ferrando ◽  
Àngels Serra ◽  
Silvia De la Flor
Keyword(s):  
Shape Memory ◽  
Shape Recovery ◽  
Memory Performance ◽  
Crosslinking Agent ◽  
Shape Memory Polymers ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Diglycidyl Ether ◽  
Partial Substitution ◽  
Scanning Calorimetry

A series of bio-based epoxy shape-memory thermosetting polymers were synthesized starting from a triglycidyl phloroglucinol (3EPOPh) and trimethylolpropane triglycidyl ether (TPTE) as epoxy monomers and a polyetheramine (JEF) as crosslinking agent. The evolution of the curing process was studied by differential scanning calorimetry (DSC) and the materials obtained were characterized by means of DSC, thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), stress-strain tests, and microindentation. Shape-memory properties were evaluated under free and totally constrained conditions. All results were compared with an industrial epoxy thermoset prepared from standard diglycidyl ether of Bisphenol A (DGEBA). Results revealed that materials prepared from 3EPOPh were more reactive and showed a tighter network with higher crosslinking density and glass transition temperatures than the prepared from DGEBA. The partial substitution of 3EPOPh by TPTE as epoxy comonomer caused an increase in the molecular mobility of the materials but without worsening the thermal stability. The shape-memory polymers (SMPs) prepared from 3EPOPh showed good mechanical properties as well as an excellent shape-memory performance. They showed almost complete shape-recovery and shape-fixation, fast shape-recovery rates, and recovery stress up to 7 MPa. The results obtained in this study allow us to conclude that the triglycidyl phloroglucinol derivative of eugenol is a safe and environmentally friendly alternative to DGEBA for preparing thermosetting shape-memory polymers.

Deformation rate-, hold time-, and cycle-dependent shape-memory performance of Veriflex-E resin

2011 ◽  
Vol 17 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Amber J. W. McClung ◽  
Gyaneshwar P. Tandon ◽  
Jeffery W. Baur
Keyword(s):  
Shape Memory ◽  
Deformation Rate ◽  
Memory Performance ◽  
Hold Time ◽  
Cycle Dependent

Cellulose nanofibers/polyurethane shape memory composites with fast water-responsivity

2018 ◽  
Vol 6 (11) ◽  
pp. 1668-1677 ◽  
Author(s):  
Yongzhen Wang ◽  
Zhongjun Cheng ◽  
Zhenguo Liu ◽  
Hongjun Kang ◽  
Yuyan Liu
Keyword(s):  
Shape Memory ◽  
Memory Performance ◽  
Cellulose Nanofibers ◽  
Memory Ability ◽  
Shape Memory Composites

The PU/CNF nanocomposites display water-triggered fast shape memory ability, such as curling and unfolding, demonstrating tailored shape memory performance.

The effect of phthalide cardo structure on the shape memory performance of high-temperature resistant epoxy resins

2018 ◽  
Vol 5 (11) ◽  
pp. 115702 ◽  
Author(s):  
Rong Ren ◽  
Zhaopeng Zhang ◽  
Xuhai Xiong ◽  
Lu Zhou ◽  
Xichao Guo ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory ◽  
Epoxy Resins ◽  
Memory Performance

Thermal, mechanical properties and shape memory performance of a novel phthalide-containing epoxy resins

Polymer ◽  
2018 ◽  
Vol 140 ◽  
pp. 326-333 ◽  
Author(s):  
Xuhai Xiong ◽  
Lu Zhou ◽  
Rong Ren ◽  
Xinghua Ma ◽  
Ping Chen
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Epoxy Resins ◽  
Memory Performance ◽  
Thermal Mechanical Properties

scholarly journals Smart polymers for cell therapy and precision medicine

2019 ◽  
Vol 26 (1) ◽  
Author(s):  
Hung-Jin Huang ◽  
Yu-Liang Tsai ◽  
Shih-Ho Lin ◽  
Shan-hui Hsu
Keyword(s):  
3D Printing ◽  
Cell Therapy ◽  
Shape Memory ◽  
Precision Medicine ◽  
Environmental Changes ◽  
Memory Performance ◽  
Soft Materials ◽  
Smart Polymers ◽  
Self Healing ◽  
Thermally Responsive

Abstract Soft materials have been developed very rapidly in the biomedical field over the past 10 years because of advances in medical devices, cell therapy, and 3D printing for precision medicine. Smart polymers are one category of soft materials that respond to environmental changes. One typical example is the thermally-responsive polymers, which are widely used as cell carriers and in 3D printing. Self-healing polymers are one type of smart polymers that have the capacity to recover the structure after repeated damages and are often injectable through needles. Shape memory polymers are another type with the ability to memorize their original shape. These smart polymers can be used as cell/drug/protein carriers. Their injectability and shape memory performance allow them to be applied in bioprinting, minimally invasive surgery, and precision medicine. This review will describe the general materials design, characterization, as well as the current progresses and challenges of these smart polymers.

Sign in / Sign up

Export Citation Format

Share Document