The effects of polymerization kinetics and chemical miscibility on the crosslinking structure and mechanical properties of polymers cured by visible-light initiated free-radical/cationic ring-opening hybrid photopolymerization are determined. A three-component initiator system is used and the monomer system contains methacrylates and epoxides. The photopolymerization kinetics is monitored in si...

Cellulose is the most abundant biopolymer in nature and has a broad range of applications in the pharmaceutical, food and biomedical fields. This review article describes the functionalization conditions, crosslinking agents, reaction pathways and the resulting physicochemical and mechanical properties of functionalized cellulose derivatives. The discussion is focused on aqueous reactions and c...

The direct pyrolytic carbonisation of polymer patterns has attracted interest for its use in obtaining carbon materials. In the case of carbonisation of nanopatterned polymers, the polymer flow and subsequent pattern change may occur in order to relieve their high surface energies. Here, we demonstrated that liquid immersion thermal crosslinking of polymer nanopatterns effectively enhanced the ...

• Butyl levulinate synthesis from fructose in aqueous 1-butanol is feasible at moderate temperature on ion-exchange resins. Gel-type resins with low crosslinking degree are suitable to catalyze the production of butyl D-fructose. An indicator humins formation fact that amount formic acid higher than levulinic acid. A relationship between activity and their morphology a swollen state found. The ...

AkzoNobel’s range of organic peroxides for the crosslinking of elastomers and thermoplastics is the world’s largest, including a number of organic peroxides for the production of PEX-a pipes and tubes. Our products are marketed under the well-known trademark of Trigonox. When producing PE pipes and tubes, frequently high density polyethylene (HDPE) is used. To further improve the product proper...

Pulsed electric field (PEF) and/or mild thermal (60 °C) processing distinctly affect the texture degradation of carrot tissues during subsequent cooking. The impact PEF on texture-related pectin properties was studied in terms extractability, degree methylesterification (DM) and Ca 2+ crosslinking cortex vascular tissue. In case tissue, treatments significantly (? = 0.05) reduced extractability...

Formaldehyde Crosslinking. Cells (10) suspended in growth medium are transferred as 40-ml aliquots into 50-ml tubes and placed on ice for 10 min. Then 1/10 volume of crosslinking solution (11% formaldehyde/0.1M NaCl/1mM Na-EDTA/0.5 mM NaEGTA/50mM Hepes, pH 8.0) is added directly to each tube. After 10-min incubation on ice, 1/20 vol of a 2.5-M glycine solution is added to each tube to stop the ...

The aim of this study was to evaluate the crosslinking abilities of divinyl sulfone (DVS) for the preparation of novel water-insoluble cyclodextrin-based polymers (CDPs) capable of forming inclusion complexes with different guest molecules. Reaction of DVS with native α-cyclodextrin (α-CD), β-cyclodextrin (β-CD) and/or starch generates a variety of homo- and hetero-CDPs with different degrees o...

Biodegradable hydrogels with three different water contents were prepared through the glutaraldehyde crosslinking of gelatin with an isoelectric point of 5.0 under varied reaction conditions. The objective of this study is to investigate the effect of time period of basic fibroblast growth factor (bFGF) release that is modified by the hydrogel water content, on the bone regeneration. A bone fra...