title: Recent Advances in Gas Barrier Thin Films via Layer-by-Layer Assembly of Polymers and Platelets.
abstract: Layer-by-layer (LbL) assembly has emerged as the leading non-vacuum technology for the fabrication of transparent, super gas barrier films. The super gas barrier performance of LbL deposited films has been demonstrated in numerous studies, with a variety of polyelectrolytes, to rival that of metal and metal oxide-based barrier films. This Feature Article is a mini-review of LbL-based multilayer thin films with a 'nanobrick wall' microstructure comprising polymeric mortar and nano-platelet bricks that impart high gas barrier to otherwise permeable polymer substrates. These transparent, water-based thin films exhibit oxygen transmission rates below 5 × 10(-3) cm(3) m(-2) day(-1) atm(-1) and lower permeability than any other barrier material reported. In an effort to put this technology in the proper context, incumbent technologies such as metallized plastics, metal oxides, and flake-filled polymers are briefly reviewed.
authors: 3M Corporate Research Materials Laboratory, 3M Center, Building 201-4N-01, St. Paul, Minnesota, 55144, USA.
authors: Morgan A
authors: MA
authors: Priolo
authors: Department of Mechanical Engineering, Texas A&M University, College Station, Texas, 77843, USA.
authors: Kevin M
authors: KM
authors: Holder
authors: Department of Chemical Engineering, Texas A&M University, College Station, Texas, 77843, USA.
authors: Tyler
authors: T
authors: Guin
authors: Department of Mechanical Engineering, Texas A&M University, College Station, Texas, 77843, USA.
authors: Jaime C
authors: JC
authors: Grunlan
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D001792:Blood Platelets / Q000737:chemistry*; D004058:Diffusion; D018857:Food Packaging / Q000379:methods*; D006801:Humans; D009757:Nylons / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D020959:Polyethylene / Q000737:chemistry*; D011093:Polyethylene Terephthalates / Q000737:chemistry*; D011126:Polypropylenes / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D009757:Nylons; D011093:Polyethylene Terephthalates; D011126:Polypropylenes; D014867:Water; D020959:Polyethylene; D010100:Oxygen
keywords: clays; gas barrier; layer-by-layer assembly; oxygen transmission rate; thin films