Shape memory assisted self-healing polymers having load bearing structure

Patent metadata

Field	Value
Publication number	US-10875282-B2
Application number	US-201414761169-A
Country	US
Kind code	B2
Filing date	Jan 15, 2014
Priority date	Jan 15, 2013
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A structural shape memory assisted self-healing polymer formed by laminating thin layers of an ionomer, such as a member of the poly(styrene sulfonate) (PSS) family of ionomers, with a WEGP-type SMP, such as atactic poly(styrene) (PS) with molecular weight in the 200 kDa range (or alternatively poly(methyl methacrylate) (PMMA)) in combination with polycyclooctene (PCO). The self-healing polymer may also comprise an interpenetrating, immiscible polymer network (IPN) based on a blend of polystyrene and polystyrene sulfonate (PSS).

First claim

What is claimed is:

1. A self-healing system, comprising:
a structural layer consisting of a shape-memory polymer film selected from the group consisting of poly(styrene), poly(styrene-butadiene), poly(norbornene), poly(norbornene-cyclooctene), poly(tert-butyl acrylate-butyl acrylate), and crosslinked poly(cyclooctene) and having a glass transition temperature; and
a heat-triggered self-healing layer consisting of a ionomeric polymer film having a self-healing temperature within 20° C. of said glass transition temperature of said shape-memory polymer film that is adjacent to and bonded to said structural layer.

2. The system of claim 1 , wherein said ionomeric polymer is selected from the group consisting of poly(ε-caprolactone), poly(ethylene oxide), poly(ethylene glycol), poly(butylene terephthalate), poly(ethylene terephthalate), poly(ethylene-co-octene), nylon-11, nylon-12, nylon-6, poly(ethylene adipate), poly(n-butyl acrylate-co-methyl methacrylate), poly(t-butyl acrylate), poly(t-butyl acrylate co-n-butyl acrylate), poly(norbornene), poly(lactide), and glassy polymers having a glass transition temperature greater than room temperature and a molecular weight below 50,000 g/mol.

3. The system of claim 1 , further comprising a plurality of said structural layers alternating with a corresponding plurality of said heat-triggered self-healing layers.

Assignees

• Mather Patrick T
• Pan Wenyang
• Univ Syracuse

Inventors

• Mather Patrick T
• Pan Wenyang

Classifications

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title

• B32B27/08 Primary

  of synthetic resin · CPC title

• B32B2305/72

  Cured, e.g. vulcanised, cross-linked · CPC title

• B32B27/40

  comprising polyurethanes · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title