Suiyi Li

Nanjing University | NJU · Department of Materials Science & Engineering

Electrically conductive nano bamboo charcoal (NBC)/ultra-high molecular weight polyethylene (UHMWPE) composites with a segregated structure were prepared by the high-speed mechanical mixing and hot-pressing method. Instead of uniform dispersion in polymer matrix, NBC distributed along specific paths and formed a segregated conductive network, which...

The size of the wood plays a crucial role in determining its ultimate application. In order to break through the dimensions of natural wood, multiple pieces of wood are often bonded together with adhesives to form larger sizes. The physical and chemical properties of adhesives are different from those of natural wood, and this difference often lead...

Biomass energy has become the fourth largest energy source following coal, oil, and natural gas due to its abundantly available sources. At present, pyrolysis oil and biochar are the main products of biomass pyrolysis for applications. Despite this, biomass products still have an untapped potential that deserves further exploration. Research on bio...

Microalgae is one the promising source of energy for the production of biofuel and other value-added products to replace the existing conventional fossil fuels. However, low lipid content and poor cell harvesting are the key challenges. Based on the growth conditions the lipid productivity will be affected. The current study examines the mixtures o...

The high demand for thermally conductive materials in the housing and packaging industry of electronic device highlights the necessity for the development of novel thermal conductivity materials. In this study, waste poplar wood was delignified and combined with boron nitride (hBN) to establish a blend system with a cross thermally conductive netwo...

The urgent issues related to the catalytic processes and energy applications have accelerated the development of hybrid and smart materials. MXenes are a new family of atomic layered nanostructured materials that require considerable research. Tailorable morphologies, strong electrical conductivity, great chemical stability, large surface-to-volume...

Recently, extensive resources were dedicated to studying how to use catalysis to convert biomass into environmentally friendly fuels. Problems with this technology include the processing of lignocellulosic sources and the development/optimization of novel porous materials as efficient monofunctional and bifunctional catalysts for biomass fuel produ...

Herein, a facile strategy was utilized to produce high-strength composites with the combination of aligned bamboo fibres (BF) and high-density polyethylene (HDPE) without artificial alignment. It involved the use of γ-aminopropyltriethoxysilane (KH-550) surface-modified bamboo fibres (K-BF) as a high-strength skeleton and the high-density polyethyl...

Herein, a facile wet-spinning strategy was used for the fabrication of mechanically strong all-chitin filaments from an aqueous NaOH solution using β-chitin nanofibers (β-ChNFs). It is hypothesized that to reach high mechanical performance it is important to preserve the crystalline structure of chitin during fabrication. To explore this possibilit...

Renewable and biodegradable natural polymeric materials are attractive candidates for replacing nonbiodegradable plastics. However, it is challenging to fabricate polysaccharide-based materials (such as cellulose and chitin) that can be used in humid or even watery environments due to their inferior stability against water. Here, a self-locking str...

Natural polymeric materials are an attractive potential replacement for non‐biodegradable plastics. However, one of the main challenges for high‐end applications of these materials, is to maintain their high mechanical properties in a watery environment. Here, inspired by the reinforcement principle of multiscale architecture in natural crab exoske...

Highly filled biochar/ultra-high molecular weight polyethylene (UHMWPE) composite samples with excellent mechanical properties and biocompatibility were prepared via extrusion followed by hot-compression. Biochar carbonized at 500 °C (BC500), 800 °C (BC800), and 1100 °C (BC1100) at 70 wt% loading were used to reinforce UHMWPE. During the melt compo...

Polymorphic changes in cellulose nanofibers (CNFs) are closely related to their properties and applications, and it is of interest to investigate how polymorphic changes influence their properties. A comparative study on the properties of CNFs with cellulose I, I/II, and II polymorphs from wood was conducted herein. CNFs were obtained by chemical e...

We report on an efficient method for extracting cellulose nanofibers with cellulose II crystal structure that presents a relatively high yield (approximately 82%) after mechanical treatment. Delignification technique plays an important role in the conversion of crystals from cellulose I to cellulose II during the mercerization process and in the su...

Highly filled (up to 80 wt%) biochar/ultra-high molecular weight polyethylene (UHMWPE)/linear low density polyethylene (LLDPE) composites with excellent electromagnetic interference (EMI) shielding performance were successfully prepared using mass-producing extrusion and hot-compression methods. Carbonizing bamboo charcoal (BC1100) at 1100 °C resul...

Highly filled bamboo charcoal (BC)/ultra‐high molecular weight polyethylene (UHMWPE) composites were prepared using extrusion and hot‐compression molding methods. The addition of BC remarkably improved the tensile properties of UHMWPE composites. When the BC content reached 70 wt%, the tensile strength and Young's modulus rose from 28.0 and 326.6 M...

Cellulose nanofibers (CNFs) have emerged as a promising nanofiller for effective reinforcement of nanocomposites due to their excellent mechanical properties. In this study, CNFs were fabricated by a simple grinding method and used to strengthen polyacrylamide (PAM) gels through in situ free radical polymerization. The morphology, compression prope...

This study was aimed at examining the size effect of charcoal particles on the properties of bamboo charcoal (BC)/ultra-high molecular weight polyethylene (UHMWPE) composites. Four types of BC with various particle sizes were mixed with UHMWPE using a twin-screw extruder. It was found that the melting temperature and crystallinity of the composites...

Electrically conductive polymer composites of ultrahigh molecular weight polyethylene (UHMWPE) filled with charcoal powder were prepared by extrusion and hot-compression methods. Scanning electron microscopy was used to investigate the interfaces between UHMWPE and charcoal powder. The results showed that charcoal powder could have strong interfaci...