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Materials 2018, 11(9), 1589;

TiO2-KH550 Nanoparticle-Reinforced PVA/xylan Composite Films with Multifunctional Properties

State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China
Author to whom correspondence should be addressed.
Received: 31 July 2018 / Revised: 20 August 2018 / Accepted: 23 August 2018 / Published: 2 September 2018
(This article belongs to the Section Thin Films)
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In order to improve the strength of polyvinyl alcohol (PVA)/xylan composite films and endow them with ultraviolet (UV) shielding ability, TiO2-KH550 nanoparticles was synthesized and added into the PVA/xylan matrix. The TiO2-KH550 nanoparticle dispersed well in the 0.04% sodium hexametaphosphate (SHMP) solution under ultrasonic and stirring treatments. Investigations on the properties of the films showed that TiO2-KH550 had the positive impact on improving the strength, moisture, and oxygen barrier properties of the composite films. The maximum tensile strength (27.3 MPa), the minimum water vapor permeability (2.75 × 10−11 g·m−1·s−1·Pa−1), and oxygen permeability (4.013 cm3·m−2·24 h−1·0.1MPa−1) were obtained under the addition of 1.5% TiO2-KH550. The tensile strength of TiO2-KH550 reinforced composite film was increased by 70% than that of the pure PVA/xylan composite film, and the water vapor and oxygen permeability were decreased by 31% and 41%, respectively. Moreover, the UV transmittance of the film at the wavelength of 400 nm was almost zero when adding ≈1.5~2.5% (weight ratio, based on the total weight of PVA and xylan) of TiO2-KH550, which indicated the PVA/xylan composite films were endowed with an excellent UV light shielding ability. View Full-Text
Keywords: polyvinyl alcohol/xylan composite films; TiO2-KH550 nanoparticle; mechanical property; UV shielding polyvinyl alcohol/xylan composite films; TiO2-KH550 nanoparticle; mechanical property; UV shielding

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Liu, X.; Chen, X.; Ren, J.; Zhang, C. TiO2-KH550 Nanoparticle-Reinforced PVA/xylan Composite Films with Multifunctional Properties. Materials 2018, 11, 1589.

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