Covalently cross-linked rubbers are renowned for their high elasticity that play an indispensable role in various applications including tires, seals, and medical implants. Development of self-healing malleable is highly desirable as it allows damage repair reprocessability to extend the lifetime alleviate environmental pollution. Herein, we propose a facile approach prepare permanently yet recyclable diene-rubber by programming dynamic boronic ester linkages into network. The network...

Covalent cross-linking of rubbers is essential for obtaining high resilience and environmental resistance but prevents healing recycling. Integrating dynamic covalent bonds into cross-linked can resolve the trade-off between permanent plasticity. The state-of-the-art elastomer-based networks require either intricate molecular makeup or present poor mechanical properties. In this work, we demonstrate a simple way to prepare mechanically robust yet healable recyclable elastomeric vitrimers by...

Reinforcing rubbers and expanding their application galleries are two important issues in material science engineering. In this work, we demonstrate a bioinspired design of high-performance macroscopically responsive diene-rubber by engineering sacrificial metal–ligand motifs into chemically cross-linked architecture network. The bonds formed through the coordination reaction between pyridine groups butadiene–styrene–vinylpyridine rubber (VPR) metal ions. Under external load, serve as that...

Vitrimers are a class of covalently cross-linked polymers that have drawn great attention due to their fascinating properties such as malleability and reprocessability. The state art approach improve mechanical is the addition fillers, which, however, greatly restricts chain mobility impedes network topology rearrangement, thereby deteriorating dynamic vitrimer composites. Here, we demonstrate integration sacrificial bonds into vitrimeric can remarkably enhance overall while facilitating...

Reinforcement, recycling, and functional applications are three important issues in elastomer science engineering. It is of great importance, but rarely achievable, to integrate these properties into elastomers. Herein, we report a simple way prepare covalently cross-linked yet recyclable, robust, macroscopically responsive vitrimers by engineering exchangeable bonds rubber–carbon nanodot (CD) interphase using CD as high-functionality cross-linker. The rubbers can rearrange the network...

Rubbers are strategically important due to their indispensable applications in the daily life and high-tech fields. For real-world applications, covalent cross-linking, reinforcement, malleability of rubbers three issues because they closely related elasticity, mechanical properties, recycling rubber materials. Herein, we demonstrate a simple way prepare covalently cross-linked yet recyclable robust elastomeric vitrimer composites by incorporating exchangeable β-hydroxyl ester bonds into...

A naturally occurred microtubullar silicate, halloysite nanotubes (HNTs), was co-cured with epoxy/cyanate ester resin to form organic–inorganic hybrids. The coefficient of thermal expansion (CTE) the hybrids low HNT concentration found be substantially lower than that plain cured resin. moduli in glassy state and rubbery were significantly higher those for dispersion HNTs matrix very uniform as revealed by transmission electron microscopy (TEM) results. interfacial reactions between cyanate...

Many reported polymer/graphene composites, even some with excellent graphene dispersion, do not possess impressive conductivity, which may be due to the failure in forming interconnected conductive paths. In this work, a kind of bio-based polyester (BE) is synthesized by polycondensation between plant-derived diols and diacids. It then grafted onto oxide (GO) via easterification hydroxyls BE carboxyls GO. Subsequently, GO subjected reduce vitamin C. Because presence terminal hydroxyl group...

To fully exhibit the potentials of fascinating characteristics graphene oxide (GO) in polymer, achievement strong interface interactions and fine dispersion GO hybrids is essential. In present work, elastomeric consisting sheets are fabricated by utilizing butadiene–styrene–vinyl pyridine rubber (VPR) as host through co-coagulation process situ formation an ionic bonding interface. The VPR/GO composites with a normal hydrogen also prepared. mechanical properties gas permeability these...

In a rubber/filler composite, the surface chemistry of filler is critical factor in determining properties composite because it affects dispersion and interfacial adhesion between rubber. this study, we primarily focus on how graphene butadiene–styrene rubber (SBR)/graphene composites resultant composites. Composites that contain with tailored are prepared via chemical reduction oxide (GO) situ. Subsequently, fully investigated relation to chemistry. As revealed by dielectric relaxation...

From the point of better biocompatibility and sustainability, biobased shape memory polymers (SMPs) are highly desired. We used 1,3-propanediol, sebacic acid, itaconic which have been industrially produced via fermentation or extraction with large quantities as main raw materials for synthesis poly(propylene sebacate). Diethylene glycol was to tailor flexibility polyester. The resulted polyesters were found be promising SMPs excellent recovery fixity (near 100% independent thermomechanical...

The development of advanced elastomers with a combination high strength, large extensibility, and excellent flex-cracking resistance is huge challenge. In this contribution, we proposed novel strategy to engineer multinetwork by incorporating weaker sacrificial hydrogen bonds stronger Zn-based units into chemically cross-linked cis-1,4-polyisoprene network. dynamic nature allows the be ruptured re-formed, resulting in stretchability. During external loading, rupture prior fracture covalent...

An advanced elastomer was developed by incorporating a dual-dynamic network into <italic>cis</italic>-polyisoprene, which combines excellent mechanical properties with high self-healing capability.

Abstract In this study, transparent poly(vinyl alcohol) (PVA) and PVA/halloysite nanotubes (HNTs) bionanocomposite films were prepared by solution casting glutaraldehyde (GA) crosslinking. The surface topography chemistry of the characterized atomic force microscopy (AFM) attenuated total reflection Fourier transform infrared (ATR‐FTIR) spectroscopy, respectively. Blending with HNTs induced changes in nanotopography PVA films. mechanical properties enhanced incorporated HNTs. stain‐induced...

Halloysite nanotubes (HNTs) were used to compound with linear low density polyethylene (LLDPE) prepare composites better mechanical properties and higher flame retardancy. The PE graft was as interfacial modifier in the LLDPE/HNTs composites. HNTs showed be a promising reinforcing retardant nano-filler for LLDPE. retardancy well thermal stability of can further enhanced by addition copolymer. Morphological observation revealed that copolymer could facilitate dispersion LLDPE matrix enhance bonding.