Thermo- and pH-sensitive shape memory polyurethane containing carboxyl groups

2016 ◽  
Vol 7 (9) ◽  
pp. 1739-1746 ◽  
Author(s):  
Qiuju Song ◽  
Hongmei Chen ◽  
Shaobing Zhou ◽  
Keqing Zhao ◽  
Biqing Wang ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Ph Sensitive ◽  
Carboxyl Groups ◽  
Triple Shape Memory ◽  
Shape Memory Polyurethane

A type of polyurethane with carboxylic acid, exhibits a thermo-induced triple-shape memory effect and a pH sensitive dual-shape memory effect.

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

Relationship between Annealing and Shape Memory Effect of Shape Memory Polyurethane

2014 ◽  
Vol 936 ◽  
pp. 140-144 ◽  
Author(s):  
Jia Ying ◽  
Masaaki Nishikawa ◽  
Masaki Hojo
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Recovery ◽  
Length Change ◽  
Recovery Ratio ◽  
High Entropy ◽  
Change Of State ◽  
Relationship Of ◽  
Shape Memory Polyurethane

The relationship of annealing and shape memory effect of uniaxially oriented shape memory polyurethane was studied; meanwhile a new method of adjusting shape recovery ratio by annealing was proposed for further consideration. Experiments were designed to compare the influence on length change from annealing and shape memory effect with shape memory polyurethane film at 65°C. We found that for shape memory polyurethane which had residual strain from material processing procedure, annealing and shape memory effect have the same effect on its length change if they are both carried out at the same temperature. It is because annealing and shape memory effect have the same mechanism, which is the change of state from low conformational entropy states to the recovery of a stable high entropy state in the polymer. Moreover, it is proved by experiment that shape recovery ratio of shape memory polyurethane can be adjusted by annealing.

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.

Organic–inorganic nanocomposite bilayers with triple shape memory effect

2011 ◽  
Vol 21 (30) ◽  
pp. 11288 ◽  
Author(s):  
C. Y. Bae ◽  
J. H. Park ◽  
E. Y. Kim ◽  
Y. S. Kang ◽  
B. K. Kim
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Triple Shape Memory

Revealing Triple-Shape Memory Effect by Polymer Bilayers

2009 ◽  
Vol 30 (21) ◽  
pp. 1823-1827 ◽  
Author(s):  
Tao Xie ◽  
Xingcheng Xiao ◽  
Yang-Tse Cheng
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Polymer Bilayers ◽  
Triple Shape Memory
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