A5084298343- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- biodegradable polymer synthesis and properties
- Biofuel production and bioconversion
- Polysaccharides and Plant Cell Walls
- Dyeing and Modifying Textile Fibers
- Plant Pathogens and Fungal Diseases
- Enzyme-mediated dye degradation
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Nanocomposite Films for Food Packaging
- Plant-Microbe Interactions and Immunity
- Material Properties and Processing
- Supercapacitor Materials and Fabrication
- Ionic liquids properties and applications
- Microbial Metabolites in Food Biotechnology
- Electrospun Nanofibers in Biomedical Applications
- Advanced NMR Techniques and Applications
- NMR spectroscopy and applications
- Food composition and properties
- Microplastics and Plastic Pollution
- Bacterial biofilms and quorum sensing
- Pesticide and Herbicide Environmental Studies
- Perovskite Materials and Applications
- Covalent Organic Framework Applications
Chalmers University of Technology
2012-2024
Abstract Polyethyleneimine (PEI) is a common polymer used in many industrial applications and research, especially surface chemistry. It available wide range of molecular weights different degrees branching. classified as linear or branched sometimes the term hyperbranched also used. This description, however, quite rough, which limits possibility to correlate structure PEI its properties. The aim this study provide analytical tools characterize at level detail not normally provided by...
Two-dimensional covalent organic frameworks (2D COFs) feature graphene-type 2D layered sheets but with a tunable structure, electroactivity, and high porosity. If these traits are well-combined, then COFs can be applied in electronics to realize functions degree of complexity. Here, highly crystalline electroactive COF, BDFamide-Tp, was designed synthesized. It shows regularly distributed pores width 1.35 nm. Smooth successive films such COF were fabricated found able increase the...
Material recycling requires solutions that are technically, as well economically and ecologically, viable. In this work, the technical feasibility to separate textile blends of viscose polyester using alkaline hydrolysis is demonstrated. Polyester depolymerized into monomer terephthalic acid at high yields, while recovered in a polymeric form. After treatment, intrinsic viscosity cellulose decreased by up 35%, which means it may not be suitable for conventional fiber-to-fiber recycling;...
The textile industry is currently under pressure to decrease environmental load related both the manufacture and use of textiles. Material recycling may be one many ways accomplish such a decrease. Age-induced property changes in cotton textiles are important understand order facilitate Consequently, this study investigates ultrastructural chemical that take place cellulose sheets over long time period laundering. Ultrastructural were studied using water retention value (WRV), specific...
The intake of dietary fibers is related with important benefits for human health. We produced two different arabinoxylan (FAX) and without ferulic acid linked (AX), 12.5 0.1 mg g-1 respectively, by subcritical water extraction wheat bran. Both FAX AX were used as supplement in bread production, while non-supplemented was control. Through an enzymatic deconstruction process we investigated the effect making on fibers, preservation their molecular structure (A/X ratio 0.13 Mw 105 Da)...
The gut microbiota plays a central role in human health by enzymatically degrading dietary fiber and concomitantly excreting short chain fatty acids that are associated with manifold benefits. polysaccharide xylan is abundant but noncarbohydrate decorations hinder efficient cleavage glycoside hydrolases (GHs) need to be addressed carbohydrate esterases (CEs). Enzymes from esterase families 1 6 (CE1 6) perform key roles degradation removing feruloyl acetate decorations, yet little known about...
Chemical recycling of textiles holds the potential to yield materials equal quality and value as products from virgin feedstock. Selective depolymerization textile polyester (PET) regenerated cellulose/PET blends, by means alkaline hydrolysis, renders monomers PET while cellulose remains in fiber form. Here, we present mechanism reactivity during hydrolysis. Part I this article series focuses on part a possible industrialization such process. The kinetics reaction for hydrolysis packaging or...
Cellulose, especially wood-based cellulose, is increasingly important for making everyday materials such as man-made-regenerated textile fibers, produced via dissolution and subsequent precipitation. In this paper, the effect of cosolvents in ionic liquid-facilitated cellulose discussed. Both microcrystalline dissolving grade hardwood pulp were studied. Three different combination with liquid evaluated using turbidity measurements viscosity. The precursor N-methylimidazole proved to be a...
In nature, chitin is organized in hierarchical structures composed of nanoscale building blocks that show outstanding mechanical and optical properties attractive for nanomaterial design. For applications benefit from a maximized interface such as nanocomposites Pickering emulsions, individualized nanocrystals (ChNCs) are interest. However, when extracted water suspension, their individualization affected by ChNC self-assembly, requiring large amount (above 90%) transport stock, which limits...
Poly[(3-hydroxybutyrate)-ran-(3-hydroxyvalerate)] (PHBV) is a bacterial polyester with strong potential as substitute for oil-based thermoplastics due to its biodegradability and renewability. However, inherent slow crystallization rate limits thermomechanical properties therefore applications. In this work, surface-modified cellulose nanocrystals (CNCs) have been investigated green biosourced nucleating reinforcing agent PHBV matrix. Different ester moieties from the CNCs were thereby...
Abstract Periodate oxidation introduces aldehyde functionality to cellulose. The use of dialdehyde cellulose has been demonstrated for crosslinking and as a chemical intermediate towards functionalized Commercially available nanocrystals (CNCs) typically carry surface sulfate half-ester functionality, which results from their manufacture via sulfuric acid hydrolysis subsequent esterification. group is bulky carrying net negative charge above pH 2 that modifies the colloidal electro-chemical...
Abstract Development of efficient lipid nanoparticle (LNP) vectors remains a major challenge towards broad clinical translation RNA therapeutics. New lipids will be required, but also better understanding LNP interactions with the biological environment. Herein, we model protein corona formation on PEG-ylated DLin-MC3-DMA LNPs and identify time-dependent maturation steps that critically unlock their cellular uptake mRNA delivery. Uptake requires active serum proteins precedes after...
Abstract Mass transport of liberated lignin fragments from pits and fiber walls into black liquor is considered a determining step in the delignification process. However, our current understanding diffusion through cellulose influential parameter on this process very limited. A comprehensive detailed study mass cellulosic materials is, therefore, great importance. In study, cell methodology implemented to systematically investigate fractionated kraft molecules model membranes. Pulping...
To further our understanding of a thermoplastic arabinoxylan (AX) material obtained through an oxidation-reduction-etherification pathway, the role initial arabinose:xylose ratio on properties was investigated. Compression molded films with one molar substitution butyl glycidyl ether (BGE) showed markedly different tensile behaviors. Films made from low arabinose AX were less ductile, while those high exhibited elastomer-like X-ray scattering confirmed presence nanostructure formation...
Diluted ionic liquid electrolytes are promising candidates in next-generation batteries enabling the implementation of lithium metal anodes. The diluent should fully mix with while not interacting Li ions to preserve character, which is beneficial for Li-metal electrode stability. We report on influence a hydrofluoroether (HFE) ion dynamics and nanostructure an electrolyte. show that miscible solvation structure affected by presence HFE. increase conductivity addition directly related...
Focusing on the challenge of non-biodegradable plastics replacement, we propose a design for peroxide-initiated crosslinking biodegradable poly(ε-caprolactone) (PCL) and renewable cellulose nanocrystals (CNCs) bionanocomposites. An industrially scalable water-assisted reactive melt-processing (REx) is studied to explore hypothesis synergy between simultaneous effects water improving CNC dispersion boosting PCL branching/crosslinking. We demonstrate that melt processing control enables...
The bark is the outermost defense of trees against microbial attack, largely thanks to toxicity and prevalence extractive compounds. Nevertheless, decomposes in nature, though by which species mechanisms remains unknown. Here, we have followed development enrichments growing on spruce over six months, monitoring both chemical changes material performing community metagenomic analyses. Carbohydrate metabolism was unexpectedly limited, instead a key activity extractives. Resin acid degradation...