吸附剂对PBAT/PLA/碳酸钙共混物力学性能与散发性能的影响OA

Poly(butylene adipate-co-terephthalate)(PBAT),polylactic acid(PLA),CaCO3,and various adsorbents were melt-blended to investigate how different adsorbent types affect the mechanical performance and emission behavior of the resulting composites.The results show that adsorbents with larger particle sizes,specifically INFLIM300 and MS10E,significantly degraded film properties,whereas M50,which features finer particles,caused only a modest de-cline in mechanical performance.Both magnesium silicate-based adsorbents(MS10E and M50)exhibit excellent odor-re-moval efficiency:adding 3 wt%of either reduced film odor by 24.2%and 25.4%,respectively.However,increasing the M50 loading to 4 wt%leads to a slight rebound in odor intensity.Notably,the incorporation of more than 3 wt%ad-sorbents results in higher total volatile organic compound(VOC)emissions compared to the blank sample.Detailed VOC analysis reveals reductions in five benzene derivatives and three aldehydes,yet the overall concentration of C6-C16 hydrocarbons increased to varying extents.Fogging tests further show decreased gloss retention on glass slides and denser oil stains upon adsorbent addition.This phenomenon is attributed to excessive adsorbent content intensifying shear forces and thermal stress during melt processing,which promotes polymer chain scission and generates more low-to medium-molecular-weight species.While the adsorbents effectively capture small volatile molecules,their capacity to retain medium-sized compounds remains limited.