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Iranian Polymer Journal

, Volume 27, Issue 7, pp 507–516 | Cite as

Additive-free photosynthesis of acrylamide hydrogels initiated with CdS and TiO2 as light visible nano-photocatalysts

  • Foad Kazemi
  • Reza Arjomand
  • Esmail Ahmadinejad
  • Babak Kaboudin
Original Research
  • 49 Downloads

Abstract

Hydrogels are three-dimensional polymer networks which can be synthesized by different techniques, such as free-radical addition reaction which is the most well-known technique in functional vinyl monomer polymerization. Photopolymerization, as an attractive technique, has been used in radical polymerization of monomers and has revitalized interest in the idea that it congregates a wide range of economic and ecological expectations. Due to the spatial–temporal control and a mild curing process of polymerization, photoinitiator semiconductor nano-particles offer great advantages, such as effective and quantitative reaction. Cadmium sulfide nanowire, titanium dioxide (TiO2) nanotube, and TiO2 nanowire were used as visible photocatalysts for photopolymerization of acrylamide hydrogel without using any additive under the sunlight and purple LED irradiations. The effects of different synthetic parameters, including initiator type and concentration and type of light sources, were investigated to achieve hydrogels with maximum swelling capacity. The results showed that the swelling of hydrogel reached 80 g water/g hydrogel when the TiO2 nanowire was used as the photoinitiator. The synthesized semiconductors and hydrogels were characterized by X-ray diffractometry, adsorption isotherm, infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy. According to the results, the new initiators led to semiconductor-based hydrogels, achieved with high swelling property through a high-speed high-efficient photopolymerization reaction in a safe manner.

Keywords

Hydrogel Photopolymerization Semiconductor CdS nanowire TiO2 nanowire TiO2 nanotube Purple LED Sunlight 

Notes

Compliance with ethical standards

Conflict of interest

Authors certify that there is no actual or potential conflict of interest in relation to this article.

Supplementary material

13726_2018_627_MOESM1_ESM.docx (568 kb)
Supplementary material 1 (DOCX 568 KB)

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Copyright information

© Iran Polymer and Petrochemical Institute 2018

Authors and Affiliations

  • Foad Kazemi
    • 1
    • 2
  • Reza Arjomand
    • 2
  • Esmail Ahmadinejad
    • 1
  • Babak Kaboudin
    • 1
  1. 1.Department of ChemistryInstitute for Advanced Studies in Basic Sciences (IASBS)ZanjanIran
  2. 2.Center for Climate and Global Warming (CCGW)Institute for Advanced Studies in Basic Sciences (IASBS)ZanjanIran

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