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Multifunctional polymer nano-composi...

Ding, Daowei.

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Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications./
作者:	Ding, Daowei.
面頁冊數:	116 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.
Contained By:	Dissertation Abstracts International77-01B(E).
標題:	Chemical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3721246
ISBN:	9781339026862

Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications.
Ding, Daowei.

Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications. - 116 p.

Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.

Thesis (Ph.D.)--Lamar University - Beaumont, 2015.

Multifunctional polymer with nanocomposites has been one of the most attractions of the study area of nanomaterials. Among these multifunction of the polymer with nanocomposites, adding conductive property to the whole materials are the key challenges, which strongly rely on the continuous updating of the high-end polymer materials' developments. In this dissertation, nano-chemical engineering and nano-process are first discussed and a broad view has been given on both academic area and industrial field. Then, a specified nanocomposites area-nanocomposites with targeting purpose-nanocomposites with conductive and magnetic property for application purposes are designed and the samples are fabricated aiming to seeking for the utility of the combination of conductive and magnetic property within the polymer and nanoparticles. Nano-Chemical engineering and nano-processes are critical in manufacturing multifunctional nanocomposites which are used for wide applications. Innovations made in nano-chemical engineering and nano-processes have enhanced performances of existing nanocomposites and developed new types of nanocomposites. On the other hand, the nano-chemical engineering and nano-processes can be affected by the design of the nanocomposites.

ISBN: 9781339026862Subjects--Topical Terms:

560457
Chemical engineering.

Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications.
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245 1 0 $a Multifunctional polymer nano-composites for chemical synthesis, property analysis and applications.
300 $a 116 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.
500 $a Adviser: Zhanhu Guo.
502 $a Thesis (Ph.D.)--Lamar University - Beaumont, 2015.
520 $a Multifunctional polymer with nanocomposites has been one of the most attractions of the study area of nanomaterials. Among these multifunction of the polymer with nanocomposites, adding conductive property to the whole materials are the key challenges, which strongly rely on the continuous updating of the high-end polymer materials' developments. In this dissertation, nano-chemical engineering and nano-process are first discussed and a broad view has been given on both academic area and industrial field. Then, a specified nanocomposites area-nanocomposites with targeting purpose-nanocomposites with conductive and magnetic property for application purposes are designed and the samples are fabricated aiming to seeking for the utility of the combination of conductive and magnetic property within the polymer and nanoparticles. Nano-Chemical engineering and nano-processes are critical in manufacturing multifunctional nanocomposites which are used for wide applications. Innovations made in nano-chemical engineering and nano-processes have enhanced performances of existing nanocomposites and developed new types of nanocomposites. On the other hand, the nano-chemical engineering and nano-processes can be affected by the design of the nanocomposites.
520 $a Conductive elastomeric polyurethane (PU) nanocomposites enhanced with multiwall carbon nanotubes (MWCNTs) for strain sensor applications have been synthesized via an in situ surface-initiated-polymerization (SIP) method. Diisocynate and diol was combined to polymerize and Part A was utilized as accelerator and Part C was used as catalyst. The morphology of the nanocomposites with different loadings of MWCNTs was investigated by scanning electron microscopy (SEM) and the corresponding chemical structures were studied by Fourier Transform Infrared Spectroscopy (FT-IR). Uniformly distributed MWCNTs was observed at various loadings, i.e., 1.0 %, 3.0% and 5.0 wt%. Enhanced thermal stability arising from the reinforcing MWCNTs in the nanocomposites was also observed from the thermal gravimeter analysis (TGA). Dielectric property shows that the dielectric values are in direct proportion to the MWCNTs loadings from 2 Hz to 2x106 Hz and a unique negative permittivity was achieved in the nanocomposites with the highest MWCNTs loading of 10.0 wt% at lower frequency range from 2 Hz to 2x102 Hz. Electrical conductivity study reveals that the resistance of fabricated films decreased from more than 1010 to 103 ohms with increasing the MWCNTs loadings from 1.0 to 10.0 wt%. The nanocomposites displayed a good response of the conductivity change to the varying strain in the cyclic strain test, indicating promising potential for strain sensor applications.
520 $a Polyimide (PI) nanocomposite reinforced with Fe3O4 nanoparticles (NPs) at various NPs loadings levels of 5.0, 10.0, 15.0, and 20.0 wt% were fabricated. The chemical interactions of the Fe3O 4 NPs/PI nanocomposites were characterized using Fourier Transform Infrared (FT-IR) spectroscopy. X-ray Diffraction (XRD) results revealed that the addition of NPs had a significant effect on the crystallization of PI. Scanning electron microscope (SEM) and the atomic force microscope (AFM) were used to characterize the dispersion and surface morphology of the Fe3O4 NPs and the PI nanocomposites. The obtained optical band gap of the nanocomposites characterized using Ultraviolet--Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS) was decreased with increasing the Fe3O4 loading. Differential scanning calorimetry (DSC) results showed a continuous increase of Tg with increasing the Fe3O4 NPs loading. Some differences were observed in the onset decomposition temperature between the pure PI and nanocomposites since the NPs and the PI matrix were physically entangled together to form the nanocomposites. The contact angle of pure PI was larger than that of Fe3O4/PI nanocomposites films, and increased with increasing the loading of Fe3O4. The degree of swelling was increased with increasing the Fe3O 4 loading and the swelling time. The dielectric properties of the nanocomposites were strongly related to the Fe3O4 loading levels. The Fe3O4/PI magnetic property also had been improved with increasing the loading of the magnetic nanoparticles.
590 $a School code: 0424.
650 4 $a Chemical engineering. $3 560457
650 4 $a Analytical chemistry. $3 3168300
650 4 $a Inorganic chemistry. $3 3173556
650 4 $a Organic chemistry. $3 523952
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