Effect of steaming on shape memory polyurethane fibers with various hard segment contents

2007 ◽  
Vol 16 (4) ◽  
pp. 969-981 ◽  
Author(s):  
Yong Zhu ◽  
Jinlian Hu ◽  
Lap-Yan Yeung ◽  
Jing Lu ◽  
Qinghao Meng ◽  
...  
Keyword(s):  
Shape Memory ◽  
Hard Segment ◽  
Shape Memory Polyurethane

scholarly journals Efficacy of Gold Photothermal-Activated Shape Memory Polyurethane

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Christopher J. Ward ◽  
Robert Tonndorf ◽  
Alicia Eustes ◽  
Maria L. Auad ◽  
Edward W. Davis
Keyword(s):  
Composite Material ◽  
Shape Memory ◽  
Gold Nanorods ◽  
Hard Segment ◽  
Infrared Irradiation ◽  
Shape Memory Behavior ◽  
Irradiation Intensity ◽  
Thermally Activated ◽  
Solution Blending ◽  
Shape Memory Polyurethane

The addition of gold nanorods to a commercial polyurethane enabled shape memory behavior activation via infrared irradiation. The fraction of the set strain recovered was found to be dependent on the nanorod loading and irradiation intensity. A nanocomposite consisting of gold nanorods with an aspect ratio of ~3.25 and a diameter of ~11.5 nm and the polyurethane IROGRAN PS455-203 was prepared via a simple solution blending technique. Gold loadings up to 3.2 ppm by weight were evaluated. The glass transition temperature and melting point of the hard-segment phase was slightly depressed at the highest loading evaluated. Other thermal properties were not affected by the addition of gold nanorods. Also, the thermally activated shape memory behavior of the composite material was not affected by the presence of the gold nanorods.

Three-dimensional Graphene Coated Shape Memory Polyurethane Foam with Fast Responsive Performance

2021 ◽  
Author(s):  
Tianjiao Wang ◽  
Jun Zhao ◽  
Chuanxin Weng ◽  
Tong Wang ◽  
Yayun Liu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Polyurethane Foam ◽  
Three Dimensional ◽  
Shape Memory Polymers ◽  
Practical Applications ◽  
External Stimuli ◽  
Shape Memory Polyurethane

Shape memory polymers (SMPs) that change shapes as designed by external stimuli have become one of the most promising materials as actuators, sensors, and deployable devices. However, their practical applications...

scholarly journals Thermo-mechanical behavior and structure of melt blown shape-memory polyurethane nonwovens

2016 ◽  
Vol 62 ◽  
pp. 545-555 ◽  
Author(s):  
David L. Safranski ◽  
Jennifer M. Boothby ◽  
Cambre N. Kelly ◽  
Kyle Beatty ◽  
Nishant Lakhera ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Shape Memory ◽  
Shape Memory Polyurethane

Surface characteristics of chitin-based shape memory polyurethane elastomers

2009 ◽  
Vol 72 (2) ◽  
pp. 248-252 ◽  
Author(s):  
Khalid Mahmood Zia ◽  
Mohammad Zuber ◽  
Mehdi Barikani ◽  
Ijaz Ahmad Bhatti ◽  
Mohammad Bilal Khan
Keyword(s):  
Shape Memory ◽  
Surface Characteristics ◽  
Polyurethane Elastomers ◽  
Shape Memory Polyurethane

One-Pot Preparation of Electroactive Shape Memory Polyurethane/Carbon Black Blend

2021 ◽  
Author(s):  
Leyla Uranbey ◽  
Halil Ibrahim Unal ◽  
Gokce Calis ◽  
Omer Yunus Gumus ◽  
Sukran Katmer ◽  
...  
Keyword(s):  
Carbon Black ◽  
Shape Memory ◽  
One Pot ◽  
Shape Memory Polyurethane

Study on sisal-based polyurethane foam with multi-shape memory properties

2021 ◽  
Author(s):  
Lulu Pan ◽  
Jianfeng Ban ◽  
Tiwen Xu ◽  
Ruiquan Liu ◽  
Shaorong Lu
Keyword(s):  
Shape Memory ◽  
Polyurethane Foam ◽  
Cross Linking ◽  
Hydroxyl Groups ◽  
Shape Memory Properties ◽  
New Type ◽  
Shape Memory Polyurethane ◽  
Chemical Cross Linking

A new type of sisal-based shape memory polyurethane foam (SMPU-PSF) was prepared by chemical cross-linking of hydroxyl groups on sisal cellulose (PSF) with polycaprolactone and MDI, which used PSF as...

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