Reinforcement of Natural Rubber with Core-Shell Structure Silica-Poly(Methyl Methacrylate) Nanoparticles

Table 1

Tensile properties of pure NR and its nanocomposites (SiO₂/NR = 2/100 w/w).

Samples	NR	NR-PMMA	NR-PMMA/SiO2	NR-PMMA/SiO2-PMMA
Tensile strength/MPa	6.99	7.23	8.95	10.65
Elongation at break/%	835	823	772	773
Tensile modulus/MPa
300% elongation	0.92	0.82	1.22	1.95
500% elongation	1.00	0.94	1.46	2.32
700% elongation	1.58	2.06	2.96	3.37