2012
DOI: 10.1002/app.38732
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Polymer/clay nanocomposite plasticization: Elucidating the influence of quaternary alkylammonium organic modifiers

Abstract: The potential of nanoclay organic modifiers to induce plasticizing effects in resin and coatings systems was studied. In previous work, it was found that while low amounts of incorporation of organomodified clays significantly improved the physical and mechanical properties of a ultraviolet (UV)-curable nanocomposite, further increasing the organomodified clay content could result in the reduction of properties. To investigate the potential impact of the organic modifier composition and concentration on polyme… Show more

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Cited by 13 publications
(10 citation statements)
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“…Similar trends in the mechanical performance were observed with the previous study, where increased clay mineral content led to decreased storage moduli and cross‐link densities. To better understand this peculiar behavior, the impact of the organic modifier structure and concentration on the polymer and coating properties was studied . It was determined that the organic modifier, particularly the Cloisite ® 30B organic modifier, may plasticize the polymer matrix at high concentrations, leading to reductions in mechanical performance.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Similar trends in the mechanical performance were observed with the previous study, where increased clay mineral content led to decreased storage moduli and cross‐link densities. To better understand this peculiar behavior, the impact of the organic modifier structure and concentration on the polymer and coating properties was studied . It was determined that the organic modifier, particularly the Cloisite ® 30B organic modifier, may plasticize the polymer matrix at high concentrations, leading to reductions in mechanical performance.…”
Section: Resultsmentioning
confidence: 99%
“…To better understand this peculiar behavior, the impact of the organic modifier structure and concentration on the polymer and coating properties was studied. 34 It was determined that the organic modifier, particularly the Cloisite V R 30B organic modifier, may plasticize the polymer matrix at high concentrations, leading to reductions in mechanical performance. Based on the mechanical performance of the CPNs in this study, it appears a similar phenomenon may have occurred.…”
Section: Water Vapor Transmissionmentioning
confidence: 99%
“…Montmorillinonite, as one of the most often studied materials for nanoreinforcement has been used as such, or modified by grafting of silanes, by ion-exchange [73], by polymers (e.g. polyethylene oxide) [74], or by quaternary alkylammonium modifiers [75]. Typically, organoclay-modified UPRs show increased impact strength, tensile strength, and modulus [76À78], better thermal stability [72], higher plasticity [75], and even lower shrinkage.…”
Section: Nanoclays As Fillers For Upr and Vermentioning
confidence: 99%
“…polyethylene oxide) [74], or by quaternary alkylammonium modifiers [75]. Typically, organoclay-modified UPRs show increased impact strength, tensile strength, and modulus [76À78], better thermal stability [72], higher plasticity [75], and even lower shrinkage. Another major quality improvement observed with nanoclays is better flame retardance [79,77] (see also next section).…”
Section: Nanoclays As Fillers For Upr and Vermentioning
confidence: 99%
“…12 The disadvantages of the two first methods are the cointercalation of solvents in the case of solution reaction and slow polymer transport into the interlayer space. 13 However, the in situ intercalative polymerization method relies on the modification of the clay by intercalating functional compounds such as quaternary ammonium, [14][15][16] sulfonium, 17 diazonium, 18 and iodonium salts 19 ; or silanes 17,20,21 into its interlayer space. It follows that intercalation of a monomer triggers the growth of polymer chains in the clay galleries and thus the formation of the nanocomposite which could end up by exfoliation.…”
mentioning
confidence: 99%