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Effect of 3‐aminopropyltriethoxysilane and N,N ‐ dimethyldodecylamine as modifiers of Na + ‐montmorillonite on SBR/organoclay nanocomposites
Author(s) -
Kim WookSoo,
Yi Juhui,
Lee DongHyun,
Kim IlJin,
Son WooJung,
Bae JongWoo,
Kim Wonho
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31861
Subject(s) - organoclay , vulcanization , materials science , nanocomposite , montmorillonite , natural rubber , styrene butadiene , dispersion (optics) , composite material , chemical engineering , composite number , polymer chemistry , copolymer , polymer , styrene , physics , optics , engineering
In this study, styrene butadiene rubber (SBR)/organoclay nanocomposites were manufactured using the latex method with 3‐aminopropyltriethoxysilane (APTES) and N,N ‐dimethyldodecylamine (DDA) as modifiers. The layer‐to‐layer distance of the silicates was observed according to each manufacturing process for APTES as the modifier using the X‐ray diffraction (XRD) method. From the XRD results and the TEM images, the dispersion of the silicates impoved for both APTES‐MMT and DDA‐MMT, and the dispersion of the silicates with the DDA modifier improved more than the APTES modifier. The SBR/DDA‐MMT compound exhibited the fastest scorch time, optimal vulcanization time, and cure rate. The dynamic viscoelastic properties of the SBR/APTES‐MMT compound were measured according to the change in the strain amplitude in order determine if a covalent bond was formed between APTES and bis(triethoxysilyl‐propyl)tetrasulfide (TESPT). The mechanical properties of the SBR/DDA‐MMT nanocomposite improved more than the SBR/APTES‐MMT composite because the vulcanization effects of alkylamine and the dispersion of silicates within the rubber matrix were relatively good. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010