Ductile to brittle transition concept on fracture behavior of poly(vinylidene fluoride)/poly(methyl methacrylate) blends

摘要：

　　The fracture behavior of blends of poly(ninylidene fluoride) (PVDF) and poly(methyl methacrylate) (PMMA) was investigated by gradually increasing the PVDF content.The study focuses on semi-crystalline blends.The trends of net stress versus crack opening displacement curves were analyzed.From these plots,two fracture energies were defined: the fracture energy to crack initiation corresponding to the area under the curve up to the maximum net stress and the fracture energy to crack propagation considering the last part of the curve where the load continuously decreases.Fracture surface inspections confirmed typical semi-crystalline polymer features.Critical values of the degree of crystallinity corresponding to brittle to ductile transition were determined,depending on the selected fracture energy.

关键词： Blends Poly(methyl methacrylate) Poly(vinylidene fluoride) Fracture toughness Brittle to Ductile transition

作者: Lucien Laiarinandrasana Yannick Nziakou Jean-Louis Halary

作者单位: Centre des Matériaux CNRS UMR 7633,Mines ParisTech,Evry Cedex 91003,France SIMM-Lab.UPMC/CNRS/ESPCI UMR 7615,ESPCI ParsTech,Paris Cedex 05 75231,France

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）