The molecular structure, chemical properties, and biological function of the xyloglucan polysaccharide isolated from cell walls of suspension-cultured sycamore (Acer pseudoplatanus) cells are described. The sycamore wall xyloglucan is compared to the extracellular xyloglucan secreted by suspension-cultured sycamore cells into their culture medium and is also compared to the seed "amyloid" xylog...

Techniques in resin blending are simple and efficient method for improving the properties of polymers, and have been used widely in polymer modification field. However, polymer latex blends such as the combination of latexes, especially the latexes with water-soluble polymers, were rarely reported. Here, we report a core-shell composite latex synthesized using methyl methacrylate (MMA), butyl a...

The dissolution of polymer-coated, controlled-release urea fertilisers by means a simple, Fickian diffusion-based model is described. This in contrast to prior contributions that invoke non-Fickian mechanisms or take more quantitative view. Within quasi-static approximation, simple expressions for the granule radius and release profile as function time are obtained terms experimentally accessib...

Typically, polyurea is a polymer forming microphase-separated structures. Various coarse-grained (CG) simulation models have been developed to study the microphase structure and viscoelastic properties of polyurea. However, since hydrogen atoms were modelled implicitly in existing CG models, anisotropic bonding between urea groups hard domain might not be treated properly. Here, we introduce hy...

Layered double hydroxides (LDHs) which are one type of layered material promising materials due to some their interesting properties, such as ease synthesis, unique structure, uniform distribution different metal cations in the brucite layer, surface hydroxyl groups, flexible tunability, intercalated anions with interlayer spaces, swelling and high chemical thermal stability, ability intercalat...

Microencapsulated dicyclopentadiene (DCPD) healing agent and Grubbs’ Ru catalyst are incorporated into an epoxy matrix to produce a polymer composite capable of self-healing. The fracture toughness and healing efficiency of this composite are measured using a tapered double-cantilever beam (TDCB) specimen. Both the virgin and healed fracture toughness depend strongly on the size and concentrati...

Analytical parameters known to be important for the separation of DNA by capillary electrophoresis, including gel polymer concentration, electrical field strength and temperature, were investigated and optimized for the analysis of RNA molecules from 100 to 2000 bases. Denaturation, essential to obtain uniform and identifiable peaks, was accomplished by heating the sample in 80% formamide prior...

Abstract: Polymer based membranes for gas capture and separation have been investigated as alternative to the conventional systems, mainly in processes applied by petrochemical and refinery areas [1]. Due to their versatility, poly(urethane) (PU) and poly(urethane-urea) (PUU) have been studied as good candidates to be applied on gas capture/separation [2,3]. Molecular dynamics (MD) simulations ...

Agronomic production on poorly drained soils in humid regions, such as the Central Claypan Region (MLRA), can exhibit low crop production in moderate to wet growing seasons. Extended periods of saturated soil conditions during a growing season may severely lower crop production by inhibiting plant growth, increasing the chance of disease, and providing conditions ideal for nutrient loss. Traffi...