Controlling the selective distribution of hydrophilic silica nanoparticles in polylactide/ethylene-co-vinyl-acetate blends via tailoring the OH surface concentration of silica

Facile fabrication of stain‐resistant poly(lactic acid)/silicone powder fibers: Comprehensive structure characterization and performance evaluation

“…However, when the silicone powder percentage is 4 wt% (Figure 2e), larger agglomerations occur due to the large specific surface area and high surface energy of the SiO 2 nanoparticles, generating large particle aggregates (2 $ 3 μm), which may result in a decrease in the water contact angle. 43,44 Furthermore, the cross section of the fiber (Figure 3) is rather flat, indicating that there is no microphase separation between PLA and PDMS. Only SiO 2 aggregates (260 $ 570 nm in diameter) disperse within the PLA matrix, and no defects are formed, laying a macrostructural basis for the improvement in the performance of the PLA fibers.…”

“…Because of the soft features of PDMS and the considerable difference in solubility parameters between PDMS and PLA, the intermolecular interaction force is weak, which is detrimental to the mechanical properties of the fibers. [44][45][46][47][48] The weak surface adhesion of PDMS, on the other hand, can act as "internal lubrication" in the spinning process, promoting the unentanglement of PLA molecules to generate a more oriented structure. 49,50 Moreover, the interfacial interaction between the nano-SiO 2 particles and the PLA matrix contributed to the tenacity of the fibers.…”

Superhydrophobic and elastic silica/polyimide aerogel based on double confinement growth strategy of the co-sol system

“…15 The introduction of SiO 2 can also control the mechanical properties of the polymers. 16 Zhang et al 17 prepared a hydrophobic bacterial cellulose aerogel by freeze-drying a mixture of bacterial cellulose and hydrolysate of methyltrimethoxysilane (MTMS). The in situ growth of silica has a stronger binding force than silica aerogel powder.…”