碳纳米管和梯型聚倍半硅氧烷改性聚乳酸非织造布。

Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland.

Molecules. 2021 Mar 3;26(5):1353. doi: 10.3390/molecules26051353.

Electrospun nonwovens of poly(L-lactide) (PLLA) modified with multiwall carbon nanotubes (MWCNT) and linear ladder-like poly(silsesquioxane) with methoxycarbonyl side groups (LPSQ-COOMe) were obtained. MWCNT and LPSQ-COOMe were added to the polymer solution before the electrospinning. In addition, nonwovens of PLLA grafted to modified MWCNT were electrospun. All modified nonwovens exhibited higher tensile strength than the neat PLA nonwoven. The addition of 10 wt.% of LPSQ-COOMe and 0.1 wt.% of MWCNT to PLLA increased the tensile strength of the nonwovens 2.4 times, improving also the elongation at the maximum stress.

聚（L-丙交酯）（PLLA）的电纺非织造布经多壁碳纳米管（MWCNT）和带有甲氧基羰基侧基的线性梯型聚（硅倍半氧烷）（LPSQ-COOMe）改性后得到。MWCNT 和 LPSQ-COOMe 在静电纺丝前加入到聚合物溶液中。此外，还对接枝到改性 MWCNT 的 PLLA 进行了静电纺丝。所有改性的非织造布的拉伸强度均高于纯 PLA 非织造布。在 PLLA 中添加 10wt%的 LPSQ-COOMe 和 0.1wt%的 MWCNT 可使非织造布的拉伸强度提高 2.4 倍，同时也提高了最大应力下的伸长率。