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Natural protein recycling of resources such as feathers industrial development trend of the world. This paper using a laboratory made ultrafine feather powder, and polypropylene (PP) blend film deposition and, respectively, by graft modification of PP, feather powders stearic acid and coupling agent, the system study PP / superfine down powder blend membrane structure, composition and performance relationship. In order to make full use of the advantages of the feather green promotion of plastic biodegradable and recycling of plastics, while broadening areas of application of the feather. With the increase of the powder content, the hygroscopicity of the the PP / Ultrafine feather powder blend film, acid dye dyeability improve, which is caused due to the presence of the feather powder. PP after the graft modification, the tensile strength of the PP-g-MAH / ultrafine the feather powder blend film had a significantly better than the tensile strength of the PP / ultrafine the feather powder blend film, when the powder content in the 20-30%, the strength retention rate is nearly 10%, while the elastic modulus retention rate is 20-30% higher. And PP, PP-g-MAH and feather powder compatibility has been improved. Feather powder after by the stearic acid modified PP crystal grain size and the crystal surface distance is reduced, increase in the content of beta crystal form crystals. PP / ultrafine feather powder blend membrane mechanical performance has been greatly improved, in feather powder content of 20% case, when the amount of stearic acid is 5%, the tensile strength and elongation at break of 28.7 MPa and 8.6%, respectively, 22.3% and 23.8% higher than without the stearic acid-modified blends performance. Stearic acid improved the PP crystal crystalline properties and served to enhance the toughening effect. Furthermore, when the amount of stearic acid 5%, the feather powder agglomeration disappeared. Feather powder after a silane coupling agent, improved thermal stability, the PP / superfine down powder blend film crystallinity decreases, the improvement in mechanical properties increased mobility. At a powder content of 20% of the cases, when the silane coupling agent is used in an amount of 3% and 5%, the tensile strength of the blends were 29.58 MPa and 31 MPa, respectively, than the non-silane coupling agent The tensile strength of 10.4% and 15.9%, respectively. When the silane coupling agent is used in an amount of 3%, the the PP crystal grain size decreases, a melt index of 31.9 g.10min-1, 20.8% higher than when unmodified, feather the dispersibility of the powder in the blend improved significantly. Furthermore, when a coupling agent is used in an amount of 3-5%, the spinning properties of the blend can be improved. The titanate coupling agent to improve the thermal stability of the feather powders, and played a flame retardant effect. Titanate coupling agent after the increase in the degree of crystallinity of the PP / superfine down powder blend films, the tensile strength increased. Titanate coupling agent 3% down agglomeration of the powder blends solved. In addition, after a titanate coupling agent-modified PP / Ultrafine feather powder blend flowability and spinning performance improved significantly.
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