The design of polymers from renewable resources with recycling potential comes from economic and environmental problems. This work focused on the impact of disulphide bonds in the dicarboxylic acids reactions with three epoxidized vegetable oils (EVOs). For the first time, the comparison between aromatic vs. aliphatic dicarboxylic acids, containing or not S-S bonds with EVOs was discussed and evaluated by dynamic scanning calorimetry. The obtained thermosets showed reprocessability, by the dual dynamic exchange mechanism. The virgin and reprocessed materials were characterized and the thermomechanical properties were compared. The thermosets derived from EVOs with high epoxy content combined with aromatic diacids containing disulphide bridges showed high glass transition values (~111 °C), high crosslink densities and good solvent stability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7918345 | PMC |
| http://dx.doi.org/10.3390/polym13040534 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Production of Hyaluronidase by .
J Fungi (Basel)
December 2024
Division of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
Hyaluronidases have been a subject of great interest in medical and cosmeceutical applications. Previously, our group demonstrated that the venom glands of contain hyaluronidase enzymes (VesT2s), and heterologous expression of the corresponding gene () in systems results in inclusion bodies, necessitating functional folding using urea. Here, we report the successful heterologous expression of VesT2a in the expression system, with gene construction achieved using Golden.
View Article and Find Full Text PDFThe Influence of Protein Components on Quinoa Protein-Xanthan Gum Complex Gels at Different pH Levels.
Gels
December 2024
State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi 214122, China.
The study aimed to prepare complex gels of sonicated quinoa protein (QP) and polysaccharides, comparing the effects of different protein components and pH on gel properties. FTIR analysis demonstrated that the β-structure in protein at pH 7.0 was enhanced by ultrasonic treatment, which could promote the formation of a gel network.
View Article and Find Full Text PDFCollaborative Reduction-Induced Nickel-Catalytic Selective C-S Coupling of Aryl Di/Trithiosulfonates with Aryl Halides.
Org Lett
December 2024
Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, People's Republic of China.
Metal-catalytic conversion of polysulfide reagents is a major challenge in organic synthesis due to its challenging activation modes of multiple S-S bonds. The utilization of aryl di- and trithiosulfonates in nickel-catalyzed reductive coupling with aryl halides has been unexplored. Herein, we unprecedentedly describe PPh and Zn-collaborative reduction-induced nickel-catalytic selective C-S coupling of aryl di/trithiosulfonates with aryl halides to access sulfides over common disulfides or trisulfides.
View Article and Find Full Text PDFUltrasound-mediated soybean-egg white protein acid-induced emulsion gels: A multi-design approach integrating techno-functional properties, digestibility, and nutritional value.
Food Chem
December 2024
Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, China. Electronic address:
This study investigated the effects of formulation and ultrasound on the processing properties and nutrient digestion of soy protein isolate (SPI)-egg white protein (EWP) emulsion gels. The incorporation of EWP significantly improved the texture properties and freeze-thaw stability through disulfide bonds and homogeneous networks in comparison to SPI emulsion gels. However, swelling ratio of emulsion gels at SPI:EWP ratios of 3:1 and 2:1 decreased due to disruption of SPI network continuity.
View Article and Find Full Text PDFStructure-based design of covalent nanobody binders for a thermostable green fluorescence protein.
Acta Biochim Biophys Sin (Shanghai)
December 2024
Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai 200031, China.
The use of green fluorescence protein (GFP) has advanced numerous areas of life sciences. An ultra-thermostable GFP (TGP), engineered from a coral GFP, offers potential advantages over traditional jellyfish-derived GFP because of its high stability. However, owing to its later discovery, TGP lacks the extensive toolsets available for GFP, such as heavy chain-only antibody binders known as nanobodies.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!