Synthesis Of Environmental Plasticizer And Its Plasticization Study In Rubber

Plasticizers are one the most widely used additives in rubber industry.The toxicity and pollution to environment is raising more and more attention in human society.Wasted edible oil(EWO)is produced in food processing industry and main composition of EWO is Fatty acid glyceride which is most valuable recyclable resource.In this thesis,the esterification and the epoxidation reactions are implemented to change EWO to usable environmental plasticizer(EP).The esterification is achieved by solid super acid catalyst,and the expoxidation reaction is taken apart after the esterification with epoxy group in the EWO which is improved by FTIR and is a multifunctional group in EP.In this thesis,modern test equipment such as FT-IR,GPC,and GC-MS is used for the molecular structure characterization of EP and solid-liquid contact angle,group contribution method is used for estimation and calculation of polar part of surface energy and solubility parameter of EP.Rubber processing analyzer(RPA)is used to analyze processing properties of different plasticizer/rubber systems which shows EP,with a stronger polarity than paraffin oil and DOP,is good to be used as plasticizer for NR and BR.GC-MS was used for structure analysis of EP.Schematic modular structure of EP was achieved through molecular piecing,molecular weight measurement(GPC)and FTIR analysis.Solubility parameter 19.2 J1/2/cm3/2 of EP is calculated by group contribution method.The theory estimation and calculation of solubility parameter by group contribution method can well fit the processing properties results by RPA which shows theory estimation and calculation is good to use as instruction method in practical applications.