Tensile creep behavior and structures of sisal fiber reinforced styrene butadiene thermoplastic elastomer/polystyrene composites

Abstract

Styrene butadiene thermoplastic elastomer (SBS)/polystyrene (PS)/sisal fiber (SF) composites were prepared by melt-blending method. The tensile creep behavior of SBS/PS/SF composites was studied and fitted by four viscoelastic models including Findley, Burger, generalized Kelvin-Voigt and Maxwell models. The effects of content and surface properties of SF treated by alkali and silane coupling agent on the creep behavior, structures and thermal properties of the composites under the action of tensile stress were investigated. The results indicated that the generalized Kelvin-Voigt model and generalized Maxwell model could best fit the tensile creep behavior of SBS/PS/SF composites. The creep resistance and thermal stability of the composites improved with the increases of SF content and tensile stress. The interfacial properties of fiber and matrix were enhanced after SF treated by silane, which would be beneficial to the improvements of the creep resistance and thermal stability. The glass transition temperature of the composite increased with the increase of SF content, but decreased after the action of the tensile stress.

Thermal, mechanical, electrical properties of poystyrene/poly (styrene-b-isobutylene-b-styrene/carbon nanotube nanocomposites

“…5,6 Among the block copolymers containing PS segment, the most well-known one used as a thermoplastic elastomer is styrene-butadiene-styrene block copolymer, known as SBS. [7][8][9] Wu et al investigated the effect of use of SBS on the toughening of a blend of polyethylene (PE) and PS. They found that adding 15 wt% SBS to the blend of PS/PE blend with a ratio of 4/1 enhanced the impact strength by approximately 15 times.…”

The hemp-reinforced polypropylene composite: Effect of the alkaline and coupling agents treatment

“…Some fibers effectively employed as reinforcements in thermoplastic and thermoset matrices are hemp, jute, kenaf, flax, ramie, and sisal. [15][16][17][18][19][20][21][22][23] Hemp is one of the challenging fibers due to it can improve the mechanical properties and rigidness of the final product. Therefore, it has an enormous potential to be used as a reinforcement in composite materials.…”