Physical and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends - The Effects of TOR as a Compatibilizer

Abstract

Elastomer blends are widely used in rubber products for a variety of reasons, which include improved physical properties, improved service life, easier processing, and reduced production cost [. Butadiene and chloroprene (2-chloro-1,3 butadiene) are related monomers [. Blending of SBR with CR has been done to obtain better crystallisation resistance, better compression set resistance, lower brittleness temperature and enhanced resistance to sunlight deterioration as compared with CR alone. Other important properties, such as oil, heat, flame and ozone resistance, decrease as the amount of SBR increases [. It is possible to improve the phase morphology of SBR/CR blend by incorporating 5±10 phr of a modified copolymer that has segments chemically identical to SBR and CR phases. Addition of halocarbenes to polymers has been reported since a long time; however, available information on the commercial application on such modified polymers is limited [.

Recycling of Used Hydrogenated Nitrile Butadiene Rubber Through Powder Modification by Trans-Polyoctylene Rubber

“…Azimi et al [13] examined how the TOR affects the curing features and morphological properties of styrene butadiene rubber/recycled chloroprene rubber (SBR/CRr) blends. Azrem et al [14] investigated the effects of the TOR on the physical and morphological properties of the SBR/CRr blends. Awang and Ismail [15] studied the impacts of the TOR and dynamic curing on the weatherability of polypropylene/waste tire powder blends.…”

The Effects of Trans-Polyoctylene Rubber (TOR) on the Properties of Acrylonitrile Butadiene Rubber/Recycled Natural Latex Gloves (NBR/NRL-G) Compounds

“…TOR usually used as a compatibilizer for incompatible rubber compounds as well as a processing aid in rubber industry. It provides a good processability in the temperature range (100-150ºC) of rubber processing and also could present collapse resistance below the melting temperature, 54ºC, due to the TOR characteristic nature of recrystallization [8]. TOR also could acts as an unsaturated rubber to bond with sulfur, sulfur donors, peroxides, or cure resins forming cross-linking [8].…”

“…It provides a good processability in the temperature range (100-150ºC) of rubber processing and also could present collapse resistance below the melting temperature, 54ºC, due to the TOR characteristic nature of recrystallization [8]. TOR also could acts as an unsaturated rubber to bond with sulfur, sulfur donors, peroxides, or cure resins forming cross-linking [8]. Recently, the author and coauthor have studied the characteristics and properties of recycled natural latex gloves (NRL-G) as rubbery filler filled acrylonitrile butadiene rubber (NBR) [9].…”

The Effects of TOR as a Compatibilizer on Tensile and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends

“…It contain one double bonds per eight carbon atoms with 80% of the double bonds arranged in a trans isomeric double bonds [6]. In our previous works [7][8], the curing characteristics, physical properties and morphological properties of Styrene Butadiene Rubber/recycled Chloroprene Rubber (SBR/CRr) Blends were reported. The incorporation of TOR in the blends shows cure characteristics of compatibilised SBR/CRr blend have shorter scorch time, t 2 and cure time, t 90 than uncompatibilised SBR/CRr blends.…”