Shot in the mouth

Collard, Barbara; Lee, S.; Stimpson, P.; Cascarini, Luke

doi:10.1038/bdj.2007.843

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The poor strength properties may be due to decreased interaction between polymer molecules by substitution of methyl radical by higher fluoroalkyl ester groups. The addition of montmorillonite (MMT) to two commercial denture base resins, Lucitone (LU) and Accelar (AC) in amounts varying from 0 to 8 wt% reduced the linear polymerization shrinkage and impact strength, while increasing the roughness of LU and AC [3].…”

Section: Introductionmentioning

confidence: 99%

The effect of polyoxypropylene‐montmorillonite intercalates on polymethylmethacrylate

Salahuddin

2008

Polymer Composites

View full text Add to dashboard Cite

Polymethylmethacrylate (PMMA)-layered silicate nanocomposites have been prepared by in situ polymerization of commercial type of methylmethacrylate monomer (MMA), for denture base material, into organoclay. Organoclay was prepared through an ion exchange process between sodium cations in montmorillonite and NH 3 1 groups in polyethertriamine hydrochloride and polyoxypropylene triamine hydrochloride with different molecular weight (5000, 440). X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to investigate the structure of the resulting composites. Both intercalated and exfoliated nanocomposites were obtained depending on the type and amount of organoclay. The thermal decomposition temperatures of the nanocomposites were found to be higher than that of pristine polymer. PMMA was strongly fixed to inorganic surfaces, due to cooperative formation of electrostatic bonding between NH 3 1 group and negatively charged surface of layered silicate and amide linkage between PMMA and polyethertriamine or polyoxypropylene triamine. The effect of the organoclay on the hardness, toughness, tensile stress, and elongation at break of the polymer was studied and was compared with pristine polymer. The hardness and Izod impact strength of PMMA-organoclay nanocomposites were enhanced with the inclusion of clay. Tensile properties appear to be enhanced at certain organoclay content. However, the water absorption is slightly higher than the pristine PMMA.

show abstract

Section: Introductionmentioning

confidence: 99%

The effect of polyoxypropylene‐montmorillonite intercalates on polymethylmethacrylate

Salahuddin

2008

Polymer Composites

View full text Add to dashboard Cite

show abstract

Shot in the mouth

Cited by 1 publication

References 4 publications

The effect of polyoxypropylene‐montmorillonite intercalates on polymethylmethacrylate

The effect of polyoxypropylene‐montmorillonite intercalates on polymethylmethacrylate

Contact Info

Product

Resources

About