Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism

Weimin Huang; Bin Yang; Li An; Chuan Li; Y. S. Chan

doi:10.1063/1.1880448

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Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism

Weimin Huang Bin Yang Li An Chuan Li Y. S. Chan

Year: 2005 Journal: Applied Physics Letters Vol: 86 (11) Publisher: American Institute of Physics

DOI: 10.1063/1.1880448

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Abstract

We demonstrate the new features of a polyurethane shape memory polymer: water-driven actuation and recovery in sequence (i.e., programmable). Hydrogen bonding is identified as the reason behind these features. In addition, the absorbed water is quantitatively separated into two parts, namely, the free water and bound water. Their individual contribution on the glass transition temperature is identified.

Keywords:

Polyurethane Shape-memory polymer Polymer Hydrogen bond Glass transition Materials science Shape-memory alloy Sequence (biology) Mechanism (biology) Composite material Chemical engineering Polymer chemistry Polymer science Molecule Chemistry Organic chemistry Physics Engineering

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Polymer composites and self-healing

Physical Sciences → Materials Science → Polymers and Plastics

Marine Sponges and Natural Products

Life Sciences → Biochemistry, Genetics and Molecular Biology → Biotechnology

Photochromic and Fluorescence Chemistry

Physical Sciences → Materials Science → Materials Chemistry

Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism

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Comment on “Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism” [Appl. Phys. Lett. 86, 114105 (2005)]

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Publisher’s Note: “Comment on ‘Water-driven programmable polyurethane shape memory polymer: Demonstration and mechanism’ [Appl. Phys. Lett. 86, 114105 (2005)]” [Appl. Phys. Lett. 97, 056101 (2010)]