THE INFLUENCE DF RUTILE NANO-TIO2 PARTICLES ON PROPERTIES OF PVA/XYLAN COMPOSITE FILMS

摘要：

　　Poly vinyl alcohol(PVA)/xylan composite films loading rutile nano-TiO2 particles were prepared by the casting method.Sodium hexametaphosphate(SHMP)was used as a dispersant for the dispersion of nano-TiO2 during the ultrasonic and stirring treatment.Influences of nano-TiO2 amounts on the properties of PVA/xylan composite films such as mechanical properties,thermal stability,solubility,water vapor permeability(WVP)and UV transmittance were investigated.Fourier transform infrared(FTIR)and X-ray diffraction(XRD)spectroscopy confirmed the TiO2 particles existed in the composite films.SEM image indicated that nano-TiO2 particles were well dispersed in PVA/xylan matrix.The results indicated that rutile nano-TiO2 had a positive impact on the flexibility of composite films.The highest elongation at break(EAB)value(285.4%)was obtained under the addition of 4%rutile nano-TiO2 particles,which increased by 30%compared to that of film without nano-TiO2 particles.Moreover,tensile strength(TS)values of all films were higher than 16 MPa.When 1%nano-TiO2 particles were added,the composite films exhibited a lowest WVP value of 3.86 × 10-11 g·m-1·s-1·Pa-1.The composite films loading rutile nano-TiO2 particles also showed the excellent UV shielding performance.

关键词： PVA/xylan composite films Rutilenano-TiO2 Mechanical properties UV shielding performance

作者: Xiaofeng Chen Junli Ren Chuanfu Liu Runcang Sun

作者单位: State Kay Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou,510640,China

会议类型: 国际会议

会议名称: 第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)

会议地点: 广州

会议语种:英文

页码: 1-6

在线出版日期: 2016-11-07（万方平台首次上网日期，不代表论文的发表时间）