Furan-modified natural rubber: A substrate for its reversible crosslinking and for clicking it onto nanocellulose.

Int J Biol Macromol

São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-carlense, 400, CEP 13566-590, São Carlos, SP, Brazil; Department of Materials Engineering, São Carlos School of Engineering, University of São Paulo, Av. João Dagnone 1100, CEP 13563-120, São Carlos, SP, Brazil.

Published: February 2017

The conventional vulcanization process applied to elastomers is irreversible and hinders therefore their useful recycling. We demonstrate here that natural rubber can be reversibly crosslinked via the Diels-Alder coupling of furan and maleimide moieties. The furan-modified natural rubber used in this strategy was also exploited to bind it to maleimide-modified nanocellulose, thus generating a covalently crosslinked composite of these two renewable polymers.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ijbiomac.2016.11.102DOI Listing

Publication Analysis

Top Keywords

natural rubber
12
furan-modified natural
8
rubber substrate
4
substrate reversible
4
reversible crosslinking
4
crosslinking clicking
4
clicking nanocellulose
4
nanocellulose conventional
4
conventional vulcanization
4
vulcanization process
4

Similar Publications

Objective: To assess the state of endodontic practices and identify factors influencing the use of modern endodontic techniques among dental practitioners in Croatia.

Materials And Methods: A questionnaire was distributed to all dental offices in Croatia, yielding 819 responses (27% response rate). Data were descriptively analyzed and statistically modeled.

View Article and Find Full Text PDF

Anisotropically Epitaxial P-N Heterostructures Actuating Efficient Z-Scheme Photocatalytic Water Splitting.

Small

January 2025

Key Laboratory of Eco-chemical Engineering, International S&T Cooperation Foundation of Eco-chemical Engineering and Green Manufacture, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China.

Crafting anisotropically epitaxial p-n heterostructures with Z-scheme charge transmission is a promising avenue toward excellent photocatalytic efficiency, yet the large lattice mismatch and diverse crystal growth habits between components have often arisen as a big challenge to this goal. Here, anisotropically epitaxial p-n heterostructures with 19.8% lattice mismatch are obtained via a dynamics-mediated seeded growth tactic under reaction temperature as low as 60 °C.

View Article and Find Full Text PDF

Cu-doped waste-tire carbon as catalyst for UV/HO oxidation of ofloxacin.

J Environ Manage

January 2025

School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China. Electronic address:

Ofloxacin (OFX), commonly employed in the treatment of infectious diseases, is frequently detected in aquatic environments and poses potential ecological risks. UV/HO oxidation has been recognized as an efficient approach for removing antibiotics. In this study, Cu-doped waste-tire carbon was prepared and used as a UV/HO catalyst for the degradation of OFX.

View Article and Find Full Text PDF

Saline Lavage for Sampling of the Canine Nasal Immune Microenvironment.

J Vis Exp

December 2024

Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University.

Evaluating the local immune microenvironment of the canine nasal cavity can be important for investigating normal tissue health and disease conditions, particularly those associated with local inflammation. We have optimized a technique to evaluate the local nasal immune microenvironment of dogs via serial nasal lavage. Briefly, with dogs under anesthesia and positioned in sternal recumbency, prewarmed sterile saline is flushed into the affected nostril using a flexible soft rubber catheter.

View Article and Find Full Text PDF

Transducers used in acoustic logging while drilling (ALWD) must be mounted on a drill collar, and their radiation performance is dependent on the employed mounting method. Herein, the complex transmitting voltage response of a while-drilling (WD) monopole acoustic source was calculated through finite-element harmonic-response analysis. Subsequently, the acoustic pressure waveform radiated by the source driven by a half-sine excitation voltage signal was calculated using the complex transmitting voltage response.

View Article and Find Full Text PDF

Want 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!