NDLI: Morphological and thermal properties of nanocomposites contain poly(amide-imide) reinforced with bioactive N-trimellitylimido-L-valine modified TiO$

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Morphological and thermal properties of nanocomposites contain poly(amide-imide) reinforced with bioactive N-trimellitylimido-L-valine modified TiO$_{2}$ nanoparticles

Content Provider	Springer Nature Link
Author	Mallakpour, Shadpour Nikkhoo, Elham
Copyright Year	2013
Abstract	Nanoparticles (NPs), such as metal oxides, have a strong tendency to agglomerate, so homogeneous dispersion of these materials in a polymer matrix is desirable. As a result to overcome this problem and to enhance the filler-polymer interaction, it is better to functionalize the surface of NPs. In this study we describe the synthesis and characterization of novel poly(amide-imide)/TiO$_{2}$ nanocomposites (PAI/TiO$_{2}$ NCs). At first, the surface of TiO$_{2}$ NPs was modified by N-trimellitylimido-L-valine as a bioactive coupling agent. Modification by this linker causes that, the obtained TiO$_{2}$ NPs become environmentally friendly. Thereafter, NCs of modified TiO$_{2}$ and PAI were synthesized by means of an ultrasonic technique. PAI as a source of polymer matrix was synthesized by direct polycondensation reaction of N-trimellitylimido-L-valine with diaminediphenylsulphone in the presence of triphenyl phosphite and the molten tetra-n-butylammonium bromide. By the insertion of surface modified TiO$_{2}$ NPs into the polymer matrix, a considerable improvement of thermal property was achieved which was examined using thermogravimetric analysis. The structure and morphology of resulting NCs with 5 %, 10 % and 15 % TiO$_{2}$ NPs were characterized by Fourier transform IR spectroscopy, X-ray diffraction, Field emission scanning electron microscopy and transmission electron microscopy. The optical properties of the NCs were studied using ultraviolet–visible spectroscopy.
Starting Page	1
Ending Page	7
Page Count	7
File Format	PDF
ISSN	10229760
Journal	Journal of Polymer Research
Volume Number	20
Issue Number	2
e-ISSN	15728935
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-01-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chiral poly(amide-imide) Bioactive coupling agent Modification of nano-TiO$_{2}$ Nanocomposites Ultrasonic irradiation Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Polymers and Plastics

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