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Free-radical cross-linking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate in the presence of trimethoxyvinylsilane

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Title: Free-radical cross-linking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate in the presence of trimethoxyvinylsilane
Authors: Javaherian Naghash, Hamid Javaherian@iaush.ac.ir, Kabudi, Sanaz Abbasi Dineh1, Momeni, Ahmad Reza1, Massah, Ahmad Reza1, Aliyan, Hamid1
Source: Journal of Physics & Chemistry of Solids. Apr2008, Vol. 69 Issue 4, p992-999. 8p.
Subjects: Gelation, Colloids, Ethylene glycol, Methyl methacrylate
Abstract: Abstract: Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDM), and trimethoxyvinylsilane (TMVS) has been investigated in toluene at a total monomer concentration of 4molL−1 and at 70°C. Conversion of monomer, volume swelling ratio, weight fraction, and gel point were measured as a function of the reaction time, TMVS concentration, toluene content, temperature, and chain transfer agents up to the onset of macrogelation. Structural characteristics of the gels were examined by using equilibrium swelling in toluene, gel fraction, and Fourier transform infrared (FTIR) analysis. The morphology of the copolymers was also investigated by scanning electron microscopy (SEM). Based on the obtained results, it was concluded that the FTIR data did not have the capacity to show the presence of the TMVS moiety in these kinds of copolymers. On the other hand, the variation of weight fraction of gel, Wg , and its equilibrium volume swelling ratio in toluene, qv , exhibited the same behaviors as that of MMA/EGDM copolymers. Also, the dilution of the monomer mixture resulted in an increase in the gel point and swelling degree and a decrease in the percent of conversion and gel fraction. Finally, TMVS is a suitable silicone co-monomer for this system and it has been proved useful. [Copyright &y& Elsevier]
Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 31680733
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Free-radical cross-linking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate in the presence of trimethoxyvinylsilane
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  Data: <searchLink fieldCode="AR" term="%22Javaherian+Naghash%2C+Hamid%22">Javaherian Naghash, Hamid</searchLink><i> Javaherian@iaush.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Kabudi%2C+Sanaz+Abbasi+Dineh%22">Kabudi, Sanaz Abbasi Dineh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Momeni%2C+Ahmad+Reza%22">Momeni, Ahmad Reza</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Massah%2C+Ahmad+Reza%22">Massah, Ahmad Reza</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Aliyan%2C+Hamid%22">Aliyan, Hamid</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Physics+%26+Chemistry+of+Solids%22">Journal of Physics & Chemistry of Solids</searchLink>. Apr2008, Vol. 69 Issue 4, p992-999. 8p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Gelation%22">Gelation</searchLink><br /><searchLink fieldCode="DE" term="%22Colloids%22">Colloids</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink><br /><searchLink fieldCode="DE" term="%22Methyl+methacrylate%22">Methyl methacrylate</searchLink>
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  Data: Abstract: Free-radical cross-linking copolymerization of methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDM), and trimethoxyvinylsilane (TMVS) has been investigated in toluene at a total monomer concentration of 4molL−1 and at 70°C. Conversion of monomer, volume swelling ratio, weight fraction, and gel point were measured as a function of the reaction time, TMVS concentration, toluene content, temperature, and chain transfer agents up to the onset of macrogelation. Structural characteristics of the gels were examined by using equilibrium swelling in toluene, gel fraction, and Fourier transform infrared (FTIR) analysis. The morphology of the copolymers was also investigated by scanning electron microscopy (SEM). Based on the obtained results, it was concluded that the FTIR data did not have the capacity to show the presence of the TMVS moiety in these kinds of copolymers. On the other hand, the variation of weight fraction of gel, Wg , and its equilibrium volume swelling ratio in toluene, qv , exhibited the same behaviors as that of MMA/EGDM copolymers. Also, the dilution of the monomer mixture resulted in an increase in the gel point and swelling degree and a decrease in the percent of conversion and gel fraction. Finally, TMVS is a suitable silicone co-monomer for this system and it has been proved useful. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Physics & Chemistry of Solids is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jpcs.2007.11.012
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      – Code: eng
        Text: English
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        PageCount: 8
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      – SubjectFull: Gelation
        Type: general
      – SubjectFull: Colloids
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      – SubjectFull: Ethylene glycol
        Type: general
      – SubjectFull: Methyl methacrylate
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      – TitleFull: Free-radical cross-linking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate in the presence of trimethoxyvinylsilane
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            NameFull: Javaherian Naghash, Hamid
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            NameFull: Kabudi, Sanaz Abbasi Dineh
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            NameFull: Momeni, Ahmad Reza
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            NameFull: Massah, Ahmad Reza
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            NameFull: Aliyan, Hamid
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              M: 04
              Text: Apr2008
              Type: published
              Y: 2008
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