The Study On Property And Interface Of Butadiene Styrene Rubber/Carbon Black/Bagasse Nanocellulose

In the rubber industry,carbon black(CB)is an important reinforcement filler.However,it is a non-renewable resource,the dust pollution in the processing process is serious and energy intensive.Therefore,it is urgent to find new fillers to replace CB.Nanocellulose which both maintained the characteristic of cellulose,and has the unique properties of nanomaterials scale effect possesses the dimentional stability,favourable rheological properties and processing properties.Compared with the traditional rubber filler,nanocellulose has low density,high ratio,strong modulus and high specific strength and so on,which is an ideal reinforcement filler.As bagasse contains a lot of cellulose,it can be used as a raw material to prepare nanocellulose.Nanocellulose co-reinforcing rubber with CB not only can reduce the environmental pressure from traditional fillers,but also improve degradation properties of rubber and provide a new approach for the recycling of bagasse simultaneously.Bagasse nanocellulose(BNC)was extracted by hydrolysis and oxidation method successively from waste bagasse in this paper.The amount of filler was fixed to 45 phr and the effects of BNC replacing CB for 0 ? 5 ? 10 ? 15 ? 20 phr on the performances of SBR/CB/BNC composites.The results indicated that the addition of BNC made the filler disperse in the matrix well and had a little effect on the curing rate of the system;it can also weaken the Payne effect and improve the processing performance of the composites.The wet resistance and degradability of the composites were improved.SBR/CB/BNC composites containing 10 phr BNC performed best and kept those of SBR/CB system.Maleic Anhydride and Styrene was used to prepare modified bagasse nanocellulose(BMS)by being grafted to BNC.BMS was used to partially replace CB and to prepare SBR/CB/BMS composites.Results showed that the mixture of BMS shortened vulcanizing time,improved the processing properties,and further reduced the Payne effect.With the increasing amount of BMS,the trends of SBR/CB/BMS composites' mechanical properties and abrasion resistance first rose then descended.Compared with those of SBR/CB/BNC composites,these performances had been improved significantly.Among them,the mechanical properties of SBR/CB/BMS composites containing 10 phr BMS was best and obviously superior to SBR/CB system's performances.Compared to interfacial interaction ofSBR/CB composites,the reinforcing mechanism of BNC and BMS to SBR was investigated through their influences of interface interaction between filler and rubber.Under the same ratio of CB/BNC,thermal stability and aging properties of SBR/CB/BMS were better than those of SBR/CB/BNC composites.More immobilized polymer layer approached the SBR/CB/BMS composites' filler surface,and a lower rolling resistance could be obtained.There was stronger interaction between fillers and SBR matrix.From above we can see,the performances of SBR/CB/BMS composites had been improved significantly.Based on this,the interface interaction between SBR and BMS is studied by microscopic and macroscopic characterization.The results indicated that BMS is better dispersed in the rubber matrix.Also,BMS has good compatibility and strong physical interface interaction with SBR matrix.