The influence of shaped TiO2 nanofillers on the thermal properties of poly(vinyl alcohol)

被引：18
作者：
Radoicic, Marija B. [1 ]
Saponjic, Zoran V. [1 ]
Marinovic-Cincovic, Milena T. [1 ]
Ahrenkiel, Scott P. [2 ]
Bibic, Natasa M. [1 ]
Nedeljkovic, Jovan M. [1 ]
机构：
[1] Vinca Inst Nucl Sci, Belgrade 11001, Serbia
[2] S Dakota Sch Mines & Technol, Rapid City, SD USA
来源：
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2012年 / 77卷 / 05期
关键词：
nanocomposite materials; thermal properties; differential scanning calorimetry; thermogravimetric analysis; TiO2; poly(vinyl alcohol); POLYVINYL-ALCOHOL; NANOCRYSTALLINE TIO2; CRYSTALLIZATION; NANOCOMPOSITES; DEGRADATION; SURFACE; POLYMERIZATION; REDUCTION; MECHANISM; POLYMERS;
D O I：
10.2298/JSC110331161R
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Poly(vinyl alcohol)-based nanocomposites consisting of shaped TiO2 nanocrystals (nanoparticles, nanotubes or nanorods) were synthesized by direct blending of the polymer and a solution of titania nanocrystals or powder. In order to elucidate the influence of the shape of the titania nanocrystals on thermal stability of the polymer matrix and particles interaction with poly(vinyl alcohol) (PVA) chains, structural and thermal characterizations of PVA/TiO2 nanocomposites were performed. Faceted nanoparticles increased the thermal stability of the PVA matrix. Titania nanotubes and nanorods did not show any stabilizing effect on the polymer matrix under an argon atmosphere. The thermo-oxidative degradation temperature of PVA increased with addition of faceted TiO2 nanoparticles. The thermo-oxidative stability of the PVA matrix was affected more by the presence of titania nanotubes and nanorods in comparison with its thermal stability under an inert atmosphere. The degree crystallinity (X-c=32 %) of the PVA matrix slightly decreased in the presence of the faceted TiO2 nanoparticles in nanocomposite samples.
引用
收藏
页码：699 / 714
页数：16
相关论文
共 55 条
[1]   Effect of CsBr-MnCl2 mixed fillers on the crystal structure and optical and electrical properties of poly(vinyl alcohol) [J].
Abdelaziz, M .
JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 94 (05) :2178-2186
[2]   Poly(vinyl alcohol) stabilisation in thermoplastic processing [J].
Alexy, P ;
Káchová, D ;
Krsiak, M ;
Bakos, D ;
Simková, B .
POLYMER DEGRADATION AND STABILITY, 2002, 78 (03) :413-421
[3]   Kinetics of the complex process of thermo-oxidative degradation of poly(vinyl alcohol) [J].
Budrugeac, P. .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 92 (01) :291-296
[4]  
Caseri W, 2000, MACROMOL RAPID COMM, V21, P705, DOI 10.1002/1521-3927(20000701)21:11<705::AID-MARC705>3.0.CO
[5]  
2-3
[6]   XAFS studies of surface structures of TiO2 nanoparticles and photocatalytic reduction of metal ions [J].
Chen, LX ;
Rajh, T ;
Wang, ZY ;
Thurnauer, MC .
JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (50) :10688-10697
[7]   Effect of size and shape of nanocrystalline TiO2 on photogenerated charges.: An EPR study [J].
Dimitrijevic, Nada M. ;
Saponjic, Zoran V. ;
Rabatic, Bryan M. ;
Poluektov, Oleg G. ;
Rajh, Tijana .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (40) :14597-14601
[8]   Influence of α-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate [J].
Dzunuzovic, E. ;
Marinovic-Cincovic, M. ;
Jeremic, K. ;
Vukovic, J. ;
Nedeljkovic, J. .
POLYMER DEGRADATION AND STABILITY, 2008, 93 (01) :77-83
[9]   Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene [J].
Dzunuzovic, Enis ;
Vodnik, Vesna ;
Jeremic, Katarina ;
Nedejkovic, Jovan M. .
MATERIALS LETTERS, 2009, 63 (11) :908-910
[10]   Coherence of thermal transitions in poly(N-vinyl pyrrolidone)-poly(ethylene glycol) compatible blends 1.: Interrelations among the temperatures of melting, maximum cold crystallization rate and glass transition [J].
Feldstein, MM ;
Shandryuk, GA ;
Kuptsov, SA ;
Platé, NA .
POLYMER, 2000, 41 (14) :5327-5338
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