论文标题
含有对齐的几层石墨烯(FLG)的基于PLA的复合材料中的机械特征,FLG负载,大小和分散对机械和热性能的影响
Great enhancement of mechanical features in PLA based composites containing aligned few layer graphene (FLG), the effect of FLG loading, size and dispersion on mechanical and thermal properties
论文作者
论文摘要
制备了四个基于PLA的复合膜,这些膜含有水平对齐的几层石墨烯(FLG)高纵横比和吸附的白蛋白的片。机械和热性能随FLG薄片的百分比,分散程度和大小而变化。对于包含0.17%wt的FLG的高横向大小的复合材料,分别获得了高达290%和360%的拉伸模量和360%的强度,以及该复合材料的高度高达60%和80%,并且分散良好的0.02%wt。 flg。 PLA和PEG-PLLA的复合材料含有0.07%wt的非常分散的FLG薄片。延性显示在分解时分别提高伸长率,分别为80%和88%。测量含有3%FLG的PLA膜,测量了相对较高的电导率,5 x 10-3 s/cm。
Four series of PLA based composite films containing horizontally aligned few layer graphene (FLG) flakes of high aspect ratio and adsorbed albumin are prepared. The mechanical and thermal properties vary with percentage, dispersion degree and size of FLG flakes. Great improvement up to 290 and 360% of tensile modulus and strength respectively was obtained for the composite containing high lateral size of FLG at 0.17% wt., and up to 60 and 80% for the composite with very well dispersed 0.02% wt. FLG. The composites of PLA and PEG-PLLA containing very well dispersed FLG flakes at 0.07 % wt. are ductile showing enhancement of elongation at break up to respectively 80 and 88%. Relatively high electrical conductivity, 5 x 10-3 S/cm, is measured for PLA film charged with 3% of FLG.