Butadiene-derived polymers grafted nanoparticles and their methods of manufacture and use

Patent metadata

Field	Value
Publication number	US-9884935-B2
Application number	US-201615002822-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Jan 15, 2014
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

Methods for of synthesizing a polymer functionalized nanoparticle are provided. The method can comprise: attaching an anchoring compound to a nanoparticle; attaching a RAFT agent to the anchoring compound; and polymerizing a plurality of butadiene-derived monomers on the anchoring compound to form a polymeric chain covalently bonded to the nanoparticle via the anchoring compound. Polymer functionalized nanoparticles are also provided that include a nanoparticle defining a surface; a butadiene-derived polymeric chain covalently bonded to the surface of the nanoparticle. Nanocomposites are also provided that include a plurality of such polymer functionalized nanoparticles dispersed within a polymeric matrix.

First claim

What is claimed:

1. A polymer functionalized nanoparticle, comprising:
a nanoparticle defining a surface;
an anchoring compound covalently bonded to the surface of the nanoparticle, wherein the anchoring compound comprises 4-cyano-4-(dodecylsulfanylthiocarbonyl)sulfanylpentanoic acid, wherein the anchoring compound is present on the surface of the nanoparticle at a grafting density of 0.01 anchoring compounds/nm 2 to 0.7 anchoring compounds/nm 2 ; and
a butadiene-derived polymeric chain covalently bonded to the anchoring compound.

2. The polymer functionalized nanoparticle as in claim 1 , wherein the anchoring compound is covalently bonded to the surface of the nanoparticle directly.

3. The polymer functionalized nanoparticle as in claim 1 , wherein the anchoring compound is covalently bonded to the surface of the nanoparticle via a functionalization group.

4. The polymer functionalized nanoparticle as in claim 1 , wherein the nanoparticle comprises an inorganic nanoparticle.

5. The polymer functionalized nanoparticle as in claim 1 , wherein the nanoparticle comprises an organic nanoparticle, and wherein the organic nanoparticle comprise polymer nanoparticles, carbon, graphite, graphene, carbon nanotubes, virus nanoparticles, or mixtures thereof.

6. A nanocomposite comprising a plurality of the polymer functionalized nanoparticles of claim 1 dispersed within a polymeric matrix.

7. The nanocomposite of claim 6 , wherein the polymeric matrix comprises a polyolefin or a polymeric rubber material.

8. The polymer functionalized nanoparticle as in claim 1 , wherein the anchoring compound comprises an activated 4-cyano-4-(dodecylsulfanylthiocarbonyl)-sulfanylpentanoic acid.

Assignees

• Univ South Carolina

Inventors

• Benicewicz Brian
• Wang Lei
• Mohammadkhani Mohammad

Classifications

• C09C3/08

  Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} · CPC title

• C08L23/02

  not modified by chemical after-treatment · CPC title

• C09C1/44

  Carbon · CPC title

• C09C1/3063

  Treatment with low-molecular organic compounds · CPC title

• C09C1/3692

  Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684 · CPC title