Design and Preparation of Cross-Linked Polystyrene Nanoparticles for Elastomer Reinforcement

Table 3

Influence of DVB consumption on the mechanical properties of PS-filled SBR nanocomposites.

Samples		Stress at 300% Elongation/MPa	Tensile Strength/MPa	Elongation at Break/%	Permanent Set/%	Shore A Hardness/∘	Tear Strength /KN/m
Neat SBR		1.4	1.5	327	0	46	7
PS/SBR	DVB 0%	3.3	9.3	535	20	70	20
	DVB 10%	2.3	12.5	607	16	70	21
	DVB 20%	2.2	15.9	630	14	66	18
	DVB 30%	2.5	13.6	593	10	65	20

Note that the loading of PS filler was 20 phr; the cross-linked PS filler were prepared with DVB consumption of 0 wt%, 10 wt%, 20 wt%, and 30 wt% of the styrene loading. The composites were cured with 4 phr benzyl peroxide (BPO) at 95^∘C for 120 minutes.