scholarly journals PU/PMMA composites synthesized by reaction-induced phase separation: a general approach to achieve a shape memory effect

RSC Advances ◽  
2017 ◽  
Vol 7 (54) ◽  
pp. 33701-33707 ◽  
Author(s):  
Yufen Zhang ◽  
Weiwei Li ◽  
Ronglan Wu ◽  
Wei Wang
Keyword(s):  
Phase Separation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Polymethyl Methacrylate ◽  
Memory Effect ◽  
Shape Memory Polymer ◽  
Polymer Composition ◽  
Triple Shape Memory

We report a study on the triple-shape memory polymer composition of polyurethane/polymethyl methacrylate (PU/PMMA) synthesized using reaction-induced phase separation.

Clay montmorillonite-poly(e-caprolactone) electrospun microfiber/epoxy composites with triple shape memory effect

2018 ◽  
Vol 47 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Yubing Dong ◽  
Chen Qian ◽  
Jian Lu ◽  
Yaqin Fu
Keyword(s):  
Electron Microscope ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Memory Polymer ◽  
Thermomechanical Analysis ◽  
Mechanical Analysis ◽  
Content Type ◽  
Fiber Membranes ◽  
Triple Shape Memory

Purpose Epoxy (EP) and polye-caprolactone (PCL) are typical dual-shape memory polymer (DSMP). To get excellent triple-shape memory effect (TSME) polymer composites which are made from EP and PCL. Miscible PCL/EP blend composites have been investigated and compared to the TSMEs with electrospun PCL microfiber membranes/EP composites. Clay montmorillonite (MMT)-modified electrospun PCL microfiber membranes were prepared to improve the shape memory fixities of electrospun PCL microfiber membranes/EP composites. Design/methodology/approach The morphologies of electrospun PCL microfiber membranes and the cross section of PCL/EP composites were studied using a field emission scanning electron microscope (FE-SEM), and the existence of MMT was confirmed by a transmission electron microscope. Thermal mechanical properties were observed by a differential scanning calorimeter (DSC) and a dynamic thermomechanical analysis machine, and the TSMEs were also determined through dynamic mechanical analysis. Findings Results indicate that the TSMEs of electrospun PCL microfiber membranes/EP composites were excellent, whereas the TSMEs of PCL/EP blend composites were poor. The TSMEs of PCL electrospun microfiber membranes/EP composites significantly improved with the addition of the PCL electrospun microfiber modified with moderate MMT. Research limitations/implications Adding a moderate content of MMT into the electrospun PCL fibers, could improve the TSME of the PCL fiber membranes/EP composites. This study was to create a simple and effective method that can be applied to improve the performance of other SMP. Originality/value A novel triple-shape memory composite were made from dual-shape memory EP and electrospun PCL fiber membranes.

scholarly journals Triple-shape memory effect in 3D-printed polymers

2020 ◽  
Vol 14 (12) ◽  
pp. 1116-1126
Author(s):  
L. Dai ◽  
J. Song ◽  
S. Qu ◽  
R. Xiao
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
3D Printed ◽  
Triple Shape Memory

Zinc Ion Uniquely Induced Triple Shape Memory Effect of Dipole-Dipole Reinforced Ultra-High Strength Hydrogels

2011 ◽  
Vol 33 (3) ◽  
pp. 225-231 ◽  
Author(s):  
Yanjiao Han ◽  
Tao Bai ◽  
Yuan Liu ◽  
Xinyun Zhai ◽  
Wenguang Liu
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Strength ◽  
Zinc Ion ◽  
Triple Shape Memory

A multi-responsive hydrogel with a triple shape memory effect based on reversible switches

2016 ◽  
Vol 52 (90) ◽  
pp. 13292-13295 ◽  
Author(s):  
He Xiao ◽  
Wei Lu ◽  
Xiaoxia Le ◽  
Chunxin Ma ◽  
Zhaowen Li ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Triple Shape Memory

A novel multi-responsive shape memory hydrogel is described.

Triple-shape memory effect of covalently crosslinked polyalkenamer based semicrystalline polymer blends

Soft Matter ◽  
2012 ◽  
Vol 8 (18) ◽  
pp. 4928 ◽  
Author(s):  
José M. Cuevas ◽  
Raquel Rubio ◽  
Lorena Germán ◽  
José M. Laza ◽  
José L. Vilas ◽  
...  
Keyword(s):  
Polymer Blends ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Semicrystalline Polymer ◽  
Triple Shape Memory

Designing Multiple-Shape Memory Polymers with Miscible Polymer Blends: Evidence and Origins of a Triple-Shape Memory Effect for Miscible PLLA/PMMA Blends

2014 ◽  
Vol 47 (19) ◽  
pp. 6791-6803 ◽  
Author(s):  
Cédric Samuel ◽  
Sophie Barrau ◽  
Jean-Marc Lefebvre ◽  
Jean-Marie Raquez ◽  
Philippe Dubois
Keyword(s):  
Polymer Blends ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Memory Polymers ◽  
Miscible Polymer Blends ◽  
Triple Shape Memory ◽  
Pmma Blends

scholarly journals Stretchable supramolecular hydrogels with triple shape memory effect

2016 ◽  
Vol 7 (11) ◽  
pp. 6715-6720 ◽  
Author(s):  
Xiaoxia Le ◽  
Wei Lu ◽  
Jing Zheng ◽  
Dingyi Tong ◽  
Ning Zhao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Supramolecular Hydrogel ◽  
Micro Scale ◽  
Triple Shape Memory

Here, we present a novel mechanical stretchable supramolecular hydrogel with a triple shape memory effect at the macro/micro scale.

Elaborate fabrication of well-defined side-chain liquid crystalline polyurethane networks with triple-shape memory capacity

2015 ◽  
Vol 3 (25) ◽  
pp. 13435-13444 ◽  
Author(s):  
Zhibin Wen ◽  
Tianhao Zhang ◽  
Yan Hui ◽  
Wanli Wang ◽  
Keke Yang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Liquid Crystalline ◽  
Memory Capacity ◽  
Side Chain ◽  
Thermal Transition ◽  
Transition Temperatures ◽  
Polyurethane Networks ◽  
Triple Shape Memory

A series of side-chain liquid crystalline polyurethane networks (SCLCPU-Ns) with well-defined architecture are prepared via an elaborate strategy. The SCLCPU-Ns display dual thermal transition temperatures (Tg and Tcl), which can be utilized as Ttrans to trigger the triple shape memory effect.

scholarly journals Fabrication and Two-Way Deformation of Shape Memory Composite with SMA and SMP

2010 ◽  
Vol 638-642 ◽  
pp. 2189-2194 ◽  
Author(s):  
Hisaaki Tobushi ◽  
Shunichi Hayashi ◽  
Y. Sugimoto ◽  
K. Date
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Memory Polymer ◽  
Bending Deformation ◽  
Heating And Cooling ◽  
Round Shape ◽  
Heat Treated ◽  
Shape Memory Composite

The shape memory composite (SMC) with shape memory alloy (SMA) and shape memory polymer (SMP) was fabricated, and the two-way bending deformation and recovery force were investigated. The results obtained can be summarized as follows. (1) Two kinds of SMA tapes which show the shape memory effect and superelasticity were heat-treated to memorize the round shape, respectively. The shape-memorized round SMA tapes were sandwiched between the SMP sheets, and the SMC belt was fabricated. (2) The two-way bending deformation with an angle of 56 degrees is observed during heating and cooling. (3) If the SMC belt is heated and cooled by keeping the form, recovery force increases during heating and decreases during cooling.

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