| On the basis of the analysis of the characteristic and mechanism, type and preparation method, research and application development of oil-absorptive material, methacrylate(MA) was chosen as monomer because of the hydrophobic side group on its molecule. Hydroethyl methacrylate (HEMA) was used as potential crosslinking agent due to its self-crosslinking ability. The post crosslinked copolymethacrylate(CPMA-H) fibers with three-dimensional network structure and oil-absorptive function(organic solvent such as chloroform, toluene and kerosene) and the composite nonwoven fabric were prepared by the process of post crosslinking after the copolymethacrylate(CPMA) fiber was span. The factors influencing the structures and properties of the fibers, the spinning process, the mechnism of crosslinking, the effect of three-dimensional network structure on the oil absorptive properties of CPMA-H fibers were also studied.The polymerizing process, structure and property of chemical crosslinked copolymethacrylate(C-CPMA) and the factors influencing the polymerization were firstly studied. The results showed that the optimal polymerizing conditions in this research were: temperature at 75 ℃, time for 8h, ratio of water and oil at 3:1, stirring speed at 300~400rpm and dispersing agent content of 0.5wt%. The oil-absorbency of C-CPMA to chloroform, toluene, xylene and kerosene could reach 40g /g, 26.5g/g, 25.5g/g and 15g/g respectively. And the oil retention was higher than 95%. The kinetics of the controlled-release for C-CPMA was also studied. The results indicated that the crosslinking degree was the key factor that determined the absorptive and controlled-release properties of C-CPMA.The effect of different crosslinking agent on crosslinked structure of CPMA was researched. HEMA was chosen as potential crosslinking agent and copolymethacrylate with HEMA(PC-CPMA) was synthesized. The results showed that the HEMA content had an important effect on the oil absorbency and absorptive rate of PC-CPMA. PC-CPMA had good oil absorptive properties with proper HEMA content.The solution spinning process of CPMA was discussed. The optimal factors of spinning process were: temperature at 50℃, concentration of spinning solution at 25%, coagulation bath with H)2O/DMAc = 90/10, winding speed at 28~37m/min and air gap at 5~10cm.The structures and properties of CPMA-H fibers were tested. The results indicated that HEMA content, crosslinking conditions(crosslinked time and temperature) and copolymer composition were the main factors which affected oil absorptive properties of fibers. The oil absorbency drawn down and the gel fraction went up with the increase of HEMA content, but when HEMA content was 35%, the oil absorbency contrarily increased due to the hydrophobic side group on HEMA molecule. The fibers performed great oil absorptive properties when crosslinked at 150°C for 20min. The absorptive ability to kerosene was effectively improved by adding the monomer lauryl methacrylate(LMA). The maximum absorbency to chloroform, toluene and kerosene reached 34.75g/g, 18g/g, and 8.00g/g respectively. The CPMA-H fiber had good absorptive ability to oil on water surface.FTIR, SEM and DMA results of the fiber before and after crosslinking indicated that the CPMA-H fibers with three-dimensional network had a semi-interpenetrating polymer network(semi-IPN) structure. The network structure was formed by HEMA when it was crosslinked and CPMA molecules were tangled in the net to form semi-IPN structure. The crosslinking point provided necessary node to prevent the network was destroyed.The composite nonwoven fabric with oil absorptive function was prepared by CPMA fiber and polypropylene(PP) fiber. The oil absorptive properties of the nonwoven fabric and the affecting factors were tested. The results showed that the saturated oil absorbency of the nonwoven fabric to chloroform, toluene and kerosene was 9g/g, 6.5g/g and 4.4g/g respectively when LMA content was 10% and CPMA/PP=2/1 (weight ratio). The oil retention of CPMA-H nonwoven fabric was higher than 50%, whi...
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