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Shape memory polymers and methods of making and use thereof
US10005883B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10005883-B2 |
| Application number | US-201715423937-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 3, 2017 |
| Priority date | Oct 29, 2014 |
| Publication date | Jun 26, 2018 |
| Grant date | Jun 26, 2018 |
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- Title
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Abstract
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Described are shape memory polymers and methods of making shape memory polymers and actuators from the shape memory polymers.
First claim
Opening claim text (preview).
What is claimed is: 1. A directionally biased two-way shape memory polymer consisting essentially of a dual-crosslinked polymer having a first portion of crosslinks and a second portion of crosslinks with a polymer domain between each of the first portion of crosslinks and the second portion of crosslinks, wherein the first portion of crosslinks are Michael addition crosslinks and the second portion of crosslinks are photopolymerized crosslinks, wherein the polymer domain between each of the first portion of crosslinks and the second portion of crosslinks comprises poly(caprolactone), and wherein the directionally biased two-way shape memory polymer has an actuation percentage of from greater than 0% to 50%. 2. The shape memory polymer of claim 1 , wherein the second portion of crosslinks are formed by a photocrosslinking reaction which comprises photocuring with UV irradiation in the presence of a photoinitiator. 3. The shape memory polymer of claim 1 , wherein the shape memory polymer is formed at a temperature above the melting temperature of the shape memory polymer. 4. The shape memory polymer of claim 1 , wherein the poly(caprolactone) further comprises acrylate end groups, and wherein the first portion of crosslinks are formed by partially crosslinking the acrylate end groups by base-catalyzed Michael addition of a portion of the acrylate end groups and a multifunctional thiol. 5. The shape memory polymer of claim 1 , wherein the second portion of crosslinks are formed after the first portion of crosslinks. 6. The shape memory polymer of claim 1 , wherein the directionally biased two-way shape memory polymer elongates or contracts by 15% to 20% over a temperature change of 30° C.
Assignees
Inventors
Classifications
Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2367/06 takes precedence) · CPC title
Two or more independent types of crosslinking for one or more polymers · CPC title
Treatment by wave energy or particle radiation · CPC title
Compositions for creating shape memory · CPC title
- C08G63/912Primary
derived from hydroxycarboxylic acids · CPC title
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Frequently asked questions
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- What does patent US10005883B2 cover?
- Described are shape memory polymers and methods of making shape memory polymers and actuators from the shape memory polymers.
- Who is the assignee on this patent?
- Anthamatten Mitchell, Meng Yuan, Univ Rochester
- What technology area does this patent fall under?
- Primary CPC classification C08G63/912. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 26 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).