A5101816360- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- Electrospun Nanofibers in Biomedical Applications
- Polysaccharides and Plant Cell Walls
- biodegradable polymer synthesis and properties
- Biofuel production and bioconversion
- Nanocomposite Films for Food Packaging
- Bone Tissue Engineering Materials
- Mesoporous Materials and Catalysis
- Polymer Nanocomposites and Properties
- Natural Fiber Reinforced Composites
- Enzyme Catalysis and Immobilization
- Dyeing and Modifying Textile Fibers
- Advanced Materials and Mechanics
- Wound Healing and Treatments
- Aerogels and thermal insulation
- Agricultural Science and Fertilization
- Antimicrobial agents and applications
- Protein Hydrolysis and Bioactive Peptides
- Meat and Animal Product Quality
- Polymer Surface Interaction Studies
- Surface Modification and Superhydrophobicity
- Polysaccharides Composition and Applications
- Food Science and Nutritional Studies
- Pickering emulsions and particle stabilization
Dalian Polytechnic University
2023
Jimei University
2023
Texas Tech University
2014-2021
Shenzhen Institutes of Advanced Technology
2013-2019
Chinese Academy of Sciences
2013-2019
Pennsylvania State University
2010-2016
Institute for Biomedicine
2016
Nanjing University of Aeronautics and Astronautics
2015
Hohai University
2015
Fujian Agriculture and Forestry University
2014
Spherelike cellulose formation as a function of agitated culture rotational speeds and flask sizes for two different producing Acetobacter xylinum strains, JCM 9730 (ATCC 700178) NCIMB 23769), has been studied in this work. Results showed that the strain could form spherelike particles with speed above 100 rpm. The strain, however, formed no under any condition examined. For approximately 10 mm diameter spheres were produced at 150 rpm mL solution Erlenmeyer flask, while 0.5-1 200 250 flask....
Abstract Cellulose biodegradation resulting from enzymolysis generally occurs in nature rather than the human body because of absence cellulose degrading enzymes. In order to achieve in‐vivo degradation for tissue regeneration applications, we developed a bioaborbable bacterial (BBC) material, which integrates one or more enzymes (cellulases), and demonstrated its degradability vitro using buffers with pH values relevant wound environments. We introduced double lyophilizing process retain...
It has been observed that certain strains of the bacterium Gluconacetobacter xylinus can produce sphere-like cellulose particles (SCP) under orbital shaking cultivation. These unique may have broad applications in materials science, especially biomedical field. The mechanism behind SCP formation and biocompatibility, however, remain unknown. In this study, several factors potentially involved examined including composition initial inoculums, inoculum volume, media glucose concentration,...
ABSTRACT Effective dissolution of cellulosic macromolecules is the first predominant step to prepare functional bio‐based materials with desirable properties. In this study, we developed an improved process using a freeze‐drying pretreatment promote cellulose. Rheological measurements cellulose solutions and physicochemical characterization regenerated films (scanning electron microscopy, Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis) were performed....
Composite scaffolds of type 13-93 bioactive glass (13-93 BG) and sodium alginate (SA), denoted BG/SA, in mass ratios 0 : 4, 1 2 4 were prepared for bone regeneration by 3D printing under mild conditions.
Bioabsorbable bacterial cellulose composites were prepared separately by immersing (BC) in different simulated body fluids (SBF) followed incorporating cellulase enzymes into BC. The biomineralization of BC SBF has been intensively documented and generally involves a tedious preparation. This study revealed an improved approach to disperse hydroxyapatite (HA) nanopowder saturated concentration (1.0×) SBF, which was able enhance the total amount calcium phosphates (CPs) bound composites. Such...
Cellulose nanocrystals (CNCs) are perfect rodlike nanofibers that can self-assemble and form a chiral nematic phase. We found different self-assembling morphologies could be formed by size-unified CNCs. This study reported facile new approach of fractionating raw (unseparated) CNCs in wide particle size distribution (9-1700 nm) into series narrower ranges to obtain via well-designed multistage separation process composed layered filter membranes with pore cutoffs followed fast pressurized...
This study investigated the effect of acid hydrolysis cellulose on its dissolution under mild conditions in ionic liquid, 1-butyl-3-methylimidazolium acetate/N,N-dimethylacetamide (BMIMAc/DMAc). Acid high molecular weight (MW) cotton (DP > 4000) was carried out to produce hydrolyzed (HC) samples for dissolution. The HC were characterized using gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA),...
Homogeneous polyelectrolyte complex (PEC) hydrogels made from chitosan and carboxymethylcellulose were prepared in the LiOH/KOH/urea aqueous system through a freeze–thawing method. Following treatments of sequential chemical physical cross-linking, resulting with supertough mechanical strength can operate as fast response actuators under electrical stimulus salt solutions. The electromechanical behaviors are strongly dependent on experimental parameters such electric voltage, solvent...
Abstract. Nighttime light (NTL) data at daily scales presents an innovative foundation for monitoring human activities, offering vast potential across various research domains such as urban planning and management, disaster monitoring, energy consumption. The VNP46A2 dataset, sourced from NPP/VIIRS, has been providing globally corrected NTL since 2012. However, persistent challenges, fluctuations in series due to spatial mismatch angular effects, well missing holes, have significantly...
Aerogels are a series of materials with porous structure and light weight which can be applied to many industrial divisions as insulators, sensors, absorbents, cushions. In this study, cellulose-based aerogels (aerocelluloses) were prepared from cellulosic material (microcrystalline cellulose) in sodium hydroxide/water solvent system followed by supercritical drying operation. The average specific surface area aerocelluloses was 124 m 2 /g. nitrogen gas (N ) adsorption/desorption isotherms...
Journal Article Influence of 1‐methylcyclopropene (1‐MCP) on the production bacterial cellulose biosynthesized by Acetobacter xylinum under agitated culture Get access Y. Hu, Hu Department Agricultural and Biological Engineering, Pennsylvania State University, College, PA, USA Center for Nanocellulosics, Search other works this author on: Oxford Academic Google Scholar J.M. Catchmark Jeffrey M. Catchmark, 109 Ag. Eng. Bldg., College 16802, USA. E‐mail: jcatchmark@engr.psu.edu Letters in...
ABSTRACT To investigate the effective dissolution of high molecular weight (MW) cellulose macromolecules at ambient conditions, (DP > 4,000) derived from cotton fiber waste was dissolved in 1‐butyl‐3‐methylimidazolium acetate (BMIMAc)/ N,N ‐dimethylacetamide (DMAc) solvent this study. High MW achieves a solubility between 3% and 5% concentrations using BMIMAc/DMAc conditions. Rheological studies showed that all cellulose/solvent solutions displayed shear thinning behavior. Results...