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Polymers 2018, 10(10), 1082; https://doi.org/10.3390/polym10101082

Nano-Brick Wall Architectures Account for Super Oxygen Barrier PET Film by Quadlayer Assembly of Polyelectrolytes and α-ZrP Nanoplatelets

1
The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China
2
School of Chemical Engineering and Technology, Sun Yat-Sen University, Guangzhou 510275, China
3
Shenzhen Beauty Star Co., Ltd., Shenzhen 518112, China
*
Authors to whom correspondence should be addressed.
Received: 2 September 2018 / Revised: 25 September 2018 / Accepted: 25 September 2018 / Published: 29 September 2018
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Abstract

Nanobrick wall hybrid coating with super oxygen barrier properties were fabricated on polyethylene terephthalate (PET) film using a quadlayer (QL) assembly of polyelectrolytes and nanoplateles. A quadlayer assembly consists of three repeat units of polyacrylic acid (PAA), poly (dimethyl diallyl ammonium chloride) (PDDA) and layered α-zirconium phosphate (α-ZrP). PDDA with positive charges can assemble alternatively with both α-ZrP and PAA with negative charges to form nanobrick wall architectures on the surface of PET film via the electrostatic interaction. The lamellar structure of α-ZrP platelets and the dense QL assembly coating can greatly reduce the oxygen transmission rate (OTR) of PET film. Compared to pristine PET film, the OTR of PET (QL)19 is reduced from 57 to 0.87 cc/m2/day. Moreover, even with 19 QLs coating, PET (QL)19 composite film is still with an optical transparency higher than 90% and a haze lower than 10%. Therefore, the transparent PET (QL)n composite films with super oxygen barrier properties show great potential application in food packaging and flexible electronic packaging. View Full-Text
Keywords: nanobrick; electrostatic interaction; oxygen barrier; packaging applications nanobrick; electrostatic interaction; oxygen barrier; packaging applications
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Han, D.; Luo, Y.; Ju, Q.; Xiao, X.; Xiao, M.; Xiao, N.; Chen, S.; Peng, X.; Wang, S.; Meng, Y. Nano-Brick Wall Architectures Account for Super Oxygen Barrier PET Film by Quadlayer Assembly of Polyelectrolytes and α-ZrP Nanoplatelets. Polymers 2018, 10, 1082.

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