Root-like glass fiber with branched fiber prepared via molecular self-assembly

Abstract

In situ build root-like glass fiber (GF) via molecular self-assemble in polypropylene melts.

Enhanced Interfacial Strength of Natural Fiber/Polypropylene Composite with Mechanical-Interlocking Interface

“…As a result, the grown fibers at the interface functioned as interlocks to achieve the mechanical interlocking of the filler with the polymer matrix. 39,40 However, the amide-based selfassembling compounds are polar molecules so that the interfacial diffusion only appears when the surface nature of the fillers is transformed into the similar polarity via additional chemical modification; moreover, the strengthening effects of the interfacially grown fibers on the interfacial adhesion between the fillers and polymer matrix are still far from being understood.…”

“…Now, the root-like fibers have been applied successfully to many thermoset polymers but fail when applied to thermoplastic polymers because the branched fibers can be peeled away from the primary fibers during melt-compounding of the fibers and the corresponding polymers, where large shear stresses are generated during twin-screw extrusion. − Very recently, our groups proposed a facile and effective way to directly construct root-like fiber in polymer melts, involving the interfacial diffusion of some amide-based self-assembling compounds (NAs) driven by the polarity differences between the components and the subsequent epitaxial crystallization on the surface of the reinforcing filler. As a result, the grown fibers at the interface functioned as interlocks to achieve the mechanical interlocking of the filler with the polymer matrix. , However, the amide-based self-assembling compounds are polar molecules so that the interfacial diffusion only appears when the surface nature of the fillers is transformed into the similar polarity via additional chemical modification; moreover, the strengthening effects of the interfacially grown fibers on the interfacial adhesion between the fillers and polymer matrix are still far from being understood.…”

Root-like natural fibers in polypropylene prepared via directed diffusion and self-assembly driven by hydrogen bonding

“…8 Our group also utilized the polarity gaps of the different components to direct interfacial diffusion and recrystallization of some amide-based self-assembling compounds and prepared pompon-like hydroxyapatite and root-like glass ber, where the grown bers at the interface served as interlocks to tightly join the two components. 11,12 However, the self-assembling molecules generally present high polarity so pristine llers can't effectively anchor and immobilize the molecules. Accordingly, a polydopamine layer with hydroxyl groups needs to be pre-coated onto the surface for the directed interfacial diffusion.…”

Compatibilization of polyhedral oligomeric silsesquioxane for polypropylene–titanium dioxide composites and effect of the processing temperature

“…The performances of polymer composites not only depend on the composition and processing conditions, but they are also critically determined by the interfacial nature between the components . Specific interfacial interactions are generally required for excellent performance in polymer composites . So far, many efforts have been devoted to the optimization of interfacial interactions, and the incorporation of a compatibilizer is an effective and common method for achieving this .…”