The synthesis and morphology characteristic study of BAO-ODPA polyimide/TiO2 nano hybrid films

Chiang, Pai Kai; Whang, Wha–Tzong

doi:10.1016/s0032-3861(03)00086-7

Cited by 144 publications

(103 citation statements)

References 35 publications

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“…The peaks at 821 and 1622 cm Ϫ1 [ Fig. 3(C)] were assigned to the Ti-O and Ti-O-Ti stretching modes, as they have been by Chiang and Whang 33 and Shao et al 34 Therefore, it is proposed that the interfacial force between the PCL matrix and the titania network is mainly established by hydrogen bonds. As was true in the PCL polymer, peaks not seen in PCL-g-AA occur in the PCL-g-AA/TiO 2 hybrid.…”

Section: Infrared Spectroscopymentioning

confidence: 79%

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In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

2004

J of Applied Polymer Sci

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ABSTRACT:In this study, tetra isopropyl ortho titanate (TTIP) and polycaprolactone (PCL) were chosen as the ceramic precursor and the continuous phase, respectively, for the preparation of novel nanocomposites by using an in situ sol-gel process. In addition, acrylic acid grafted polycaprolactone (PCL-g-AA) was investigated as an alternative to PCL. The hybrids (PCL/TiO 2 and PCL-g-AA/TiO 2 ) were characterized via Fourier transform infrared (FTIR) spectroscopy, dynamic mechanical thermal analysis (DMA), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and Instron mechanical testing. It was found that the carboxylic acid groups of acrylic acid acted as coordination sites for the titania phase to form chemical bonds, thus improving the properties of the acrylic acid grafted composite compared with its acrylicacid-free counterpart. The TiO 2 content also determined the strength of interfacial bonding between the polymer chains and the ceramic phase, as shown by changes in glass transition temperature (T g ) with TiO 2 content. The maximum values of tensile strength and T g were obtained with the PCL-g-AA/TiO 2 composite at 10 wt % TiO 2 . At TiO 2 contents above this, excess particles led to segregation between the organic and inorganic phases.

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Section: Infrared Spectroscopymentioning

confidence: 79%

“…The peak at 1106 cm Ϫ1 indicates the Ti-O-C bond, which may be produced from the reaction between PCL-g-AA and the titanium-bonded isopropyl group. 23,33,35 An interesting trait associated with the titania phase in both hybrids was a peak at about 1622 cm Ϫ1 , assigned to Ti-O bending deformation.…”

Section: Infrared Spectroscopymentioning

confidence: 99%

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

2004

J of Applied Polymer Sci

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“…The existing challenges in the composite fabrication are to obtain uniform filler dispersion and to introduce strong chemical bonding between the nanoparticles and the polymer matrix, which are necessary to provide a high tensile strength due to local stress within the nanocomposite. The interfacial interactions between fillers and polymer matrix play a crucial role in determining the quality and properties of the nanocomposites (Rancourt and Taylor, 2008;Sawada et al, 2008;Chiang, et al, 2003). The poor bonding linkage between the fillers and the polymer matrix such as the composites made by simple mixing (Hsu, et al, 2003;Liu, et al, 1999;Park, et al, 2003;Sorensen, 2001;Zhang, et al, 1998) will introduce artificial defects, which consequently result in a adverse effect on the mechanical properties of the nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Iron Oxide Nanoparticles Reinforced Polyester/Nanocomposites

Kumar¹,

Reddy

2015

ILCPA

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ABSTRACT. We report on synthesis of two highly disperse nanoparticles viz. Fe 2 O 3 & f-Fe 2 O 3 using chemical reduction method. Reaction was initiated to mix solution A (i.e. Fecl 3 6H 2 o) into solution B (i.e. Fecl 2 4H 2 o) together under the presence of ammonium to develop nanoparticles. Mechanical properties of above mentioned nanoparticles filled with polyester polymer nanocomposites were fabricated to assess the possibility of using this filler as a new material. Methacryloxypropyl was used as a functionalization agent to prepare f-Fe 2 O 3 nanoparticles. Mechanical properties of f-Fe 2 O 3 nanocomposites were improved with the help of functionalization when compared with Fe 2 O 3 nanocomposites. A functionalization of nanoparticles favours the composite fabrication with a lower curing temperature as compared to the as-synthesised nanoparticles filled polyester nanocomposites. Thermogravimetric analysis showed an increased thermo-stability of f-Fe 2 O 3 nanoparticles filled polyester nanocomposites as compared to the Fe 2 O 3 nanoparticles filled counterparts. Mechanical and thermal properties were increased due to the homogeneous particle dispersion and chemical bonding between nanoparticles and polyester matrix. The nanoparticles become magnetically harder after incorporation into the polyester resin matrix.

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“…29,30 Numerous examples of hybrid structures made by combining polymers with inorganic materials based on metal oxides can be found. [31][32][33][34][35][36][37] For an updated comprehensive revision of the large number of design concepts in this field and their applications, we refer the reader to a recent extensive review article by Sanchez et al 38 Within the scope of this article, we will consider hybrid materials those formed by a combination of inorganic compounds and organic or partially organic polymers.…”

Section: Hybrid Organic-inorganic Filmsmentioning

confidence: 99%

Novel approaches to flexible visible transparent hybrid films for ultraviolet protection

Calvo

Smirnov

Míguez

2012

J Polym Sci B Polym Phys

119

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Herein, we present an overview of the most recent achievements and innovations regarding the development of flexible visible transparent films for selective ultraviolet (UV) shielding, with focus on those based on hybrid inorganic-organic materials. The main synthetic paths used nowadays to ensure a high degree of protection are reviewed. Polymers containing organic UV absorbing molecules, hybrid mixtures of polymers and nanoparticles, and the recently introduced series of structures displaying structural color, are identified as the three main types of materials used for this purpose.The use of biocompatible and flexible films to achieve spectrally selective UV protection can find applications in a wide diversity of fields such as photo-treatment of skin diseases, food and beverage packing, and storage of cosmetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: [945][946][947][948][949][950][951][952][953][954][955][956] 2012

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The synthesis and morphology characteristic study of BAO-ODPA polyimide/TiO2 nano hybrid films

Cited by 144 publications

References 35 publications

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

In situ polymerization of titanium isopropoxide in polycaprolactone: Properties and characterization of the hybrid nanocomposites

Synthesis and Characterization of Iron Oxide Nanoparticles Reinforced Polyester/Nanocomposites

Novel approaches to flexible visible transparent hybrid films for ultraviolet protection

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