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<p>In this work, MgAl layered double hydroxide (LDH) was synthesized and modified with sodium dodecyl sulfate (SDS) to improve its compatibility with a poly(methyl methacrylate) (PMMA) matrix. PMMA/SDS@MgAl-LDH nanocomposites were prepared via solution blending at different filler loadings (0, 3, 5, and 7 wt%). The structural characterization confirmed successful SDS intercalation within the LDH galleries. The incorporation of SDS-modified LDH enhanced the thermal and viscoelastic properties of PMMA. An increase in glass transition temperature, thermal stability, and melt viscosity was observed with increasing filler content, indicating restricted polymer chain mobility due to strong polymer–filler interactions. The best overall performance was obtained at 5 wt% filler loading, while a slight decrease in properties at higher content (7 wt%) was attributed to the onset of particle aggregation. The results demonstrate that SDS@MgAl-LDH is an efficient nanofiller for improving the performance of PMMA, with an optimal loading around 5 wt%.</p>

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Morphological, optical, thermal, viscoelastic, and rheological behavior of Poly(methyl methacrylate) reinforced with SDS-modified MgAl-Layered Double Hydroxide 

  • 期刊论文

  • 发表日期：

    2026年7月7日

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  • Wissem Haffaf,
  • Zoulikha Abdelsadek,
  • Mohammed Hamouni,
  • Haroun Houicha,
  • Patrick J. Masset

摘要

In this work, MgAl layered double hydroxide (LDH) was synthesized and modified with sodium dodecyl sulfate (SDS) to improve its compatibility with a poly(methyl methacrylate) (PMMA) matrix. PMMA/SDS@MgAl-LDH nanocomposites were prepared via solution blending at different filler loadings (0, 3, 5, and 7 wt%). The structural characterization confirmed successful SDS intercalation within the LDH galleries. The incorporation of SDS-modified LDH enhanced the thermal and viscoelastic properties of PMMA. An increase in glass transition temperature, thermal stability, and melt viscosity was observed with increasing filler content, indicating restricted polymer chain mobility due to strong polymer–filler interactions. The best overall performance was obtained at 5 wt% filler loading, while a slight decrease in properties at higher content (7 wt%) was attributed to the onset of particle aggregation. The results demonstrate that SDS@MgAl-LDH is an efficient nanofiller for improving the performance of PMMA, with an optimal loading around 5 wt%.