Stability of poly(L-lactide)/TiO2 nanocomposite thin films under UV irradiation at 254 nm

被引：34
作者：
Wang, Wei-Wei [1 ,2 ]
Man, Chang-Zhen [1 ]
Zhang, Chun-Mei [1 ]
Jiang, Long [1 ]
Dan, Yi [1 ]
Thien-Phap Nguyen [2 ]
机构：
[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn China, Chengdu 610065, Peoples R China
[2] Inst Mat Jean Rouxel, F-44322 Nantes, France
来源：
POLYMER DEGRADATION AND STABILITY | 2013年 / 98卷 / 04期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Poly(L-lactide); Rutile titania; Anatase titania; Nanocomposite; UV irradiation; Stability; MULTIPLE MELTING BEHAVIOR; HYDROLYTIC DEGRADATION; RUTILE; ACID); CRYSTALLIZATION; NANOPARTICLES; COMPOSITES; DIOXIDE; ANATASE;
D O I：
10.1016/j.polymdegradstab.2013.01.003
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(L-lactide)/titania (PLLA/TiO2) nanocomposites were in situ synthesized through ring-opening polymerization of L-lactide. Two types of TiO2, anatase and rutile, were used in the synthesis of composites. The chemical structure, crystallinity, thermal stability and morphology of composite thin films were analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The effects of TiO2 on the stability of the nanocomposites under UV irradiation as a function of time were investigated by FTIR, XRD, UV absorption spectroscopy and differential scanning calorimetry (DSC). The obtained results indicated that rutile TiO2 particles have a screening effect while anatase TiO2 acts as a photocatalyst The DSC results revealed that anatase TiO2 embedded in bulk of the films produces the same effect as rutile TiO2. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：885 / 893
页数：9
相关论文
共 31 条
  • [1] [Anonymous], 1980, Infrared Characteristic Group Frequencies
  • [2] Impact and tensile properties of PLA/Cordenka and PLA/flax composites
    Bax, Benjamin
    Muessig, Joerg
    [J]. COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (7-8) : 1601 - 1607
  • [3] Effect of chemisorbed surface species on the photocatalytic activity of TiO2 nanoparticulate films
    Cao, Y
    Yang, WS
    Chen, YM
    Du, H
    Yue, P
    [J]. APPLIED SURFACE SCIENCE, 2004, 236 (1-4) : 223 - 230
  • [4] Effect of organic montmorillonite on cold crystallization and hydrolytic degradation of poly(L-lactide)
    Chen, Haiming
    Chen, Jingwei
    Chen, Jie
    Yang, Jinghui
    Huang, Ting
    Zhang, Nan
    Wang, Yong
    [J]. POLYMER DEGRADATION AND STABILITY, 2012, 97 (11) : 2273 - 2283
  • [5] TiO2-graphene nanocomposites for photocatalytic hydrogen production from splitting water
    Cheng, Ping
    Yang, Zhi
    Wang, Hong
    Cheng, Wei
    Chen, Mingxia
    Shangguan, Wenfeng
    Ding, Guifu
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (03) : 2224 - 2230
  • [6] Accelerated ageing and degradation in poly-L-lactide/hydroxyapatite nanocomposites
    Delabarde, Claire
    Plummer, Christopher J. G.
    Bourban, Pierre-Etienne
    Manson, Jan-Anders E.
    [J]. POLYMER DEGRADATION AND STABILITY, 2011, 96 (04) : 595 - 607
  • [7] Calorimetric analysis of the multiple melting behavior of poly(L-lactic acid)
    Di Lorenzo, ML
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 100 (04) : 3145 - 3151
  • [8] TiO2 photocatalysis and related surface phenomena
    Fujishima, Akira
    Zhang, Xintong
    Tryk, Donald A.
    [J]. SURFACE SCIENCE REPORTS, 2008, 63 (12) : 515 - 582
  • [9] Photooxidation of polylactide/calcium sulphate composites
    Gardette, Melanie
    Therias, Sandrine
    Gardette, Jean-Luc
    Murariu, Marius
    Dubois, Philippe
    [J]. POLYMER DEGRADATION AND STABILITY, 2011, 96 (04) : 616 - 623
  • [10] Photocatalytic reactivity for O2•- and OH• radical formation in anatase and rutile TiO2 suspension as the effect of H2O2 addition
    Hirakawa, Tsutomu
    Yawata, Kenta
    Nosaka, Yoshio
    [J]. APPLIED CATALYSIS A-GENERAL, 2007, 325 (01) : 105 - 111
1234