The development of epoxy thermosets from renewable resources is of paramount importance in a sustainable development context. In this paper, a novel bio-based epoxy monomer derived from limonene was synthesized without epichlorohydrine and characterized. In fact, this paper depicts the synthesis of bis-limonene oxide (bis-LO). However, intern epoxy rings generally exhibit a poor reactivity and allow reaction with anhydride. Therefore, we used a reaction model with hexahydro-4-methylphthalic anhydride to compare reactivity of terminal and interepoxy functions. We also studied the influence of methyl group on intern epoxy functions. Furthermore, the influence of epoxy:anhydride stoichiometry and initiator amount was studied. These studies allow to propose an optimized formulation of bis-LO. Finally, a bis-LO-based thermoset was obtained and characterized.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6278336 | PMC |
| http://dx.doi.org/10.3390/molecules23112739 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation and comparison of silorane resin composite to glass ionomer in occluso-proximal restorations of primary molars: A randomized controlled trial.
J Indian Soc Pedod Prev Dent
October 2022
Department of Public Health Dentistry, SMBT Dental College, Hospital and Research Center, Sangamner, Maharashtra, India.
Objective: In general, proximal restorations of primary molars fracture, so it is vital to study the new materials that could solve this problem. Hence, the present trial assessed the success of occluso-proximal atraumatic restorative treatment (ART) restorations using silorane and glass ionomer cement (GIC) in carious primary molars for a period of 2 years.
Materials And Methods: One hundred and ninety-two children between the age group of 4 and 9 years were randomly allocated to GIC or silorane.
Incorporation of Phase Change Materials into the Surface of Aluminum Structures for Thermal Management.
Materials (Basel)
September 2022
Department of Mechanical and Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93943, USA.
This article explores the concept of generating a porous anodic layer on the surface of a metallic component to host a phase change material (PCM) aiming to reduce the peak temperatures that the host structure will experience. The conditions to fabricate a porous anodic layer on top of an aluminum substrate were determined through varying anodization conditions: solution concentration, voltage employed, and anodization times. Pore sizes were characterized using scanning electron microscopy.
View Article and Find Full Text PDFHealth risks of dual use of electronic and combustible cigarettes: exposure to acrylamide and glycidamide.
Pol Arch Intern Med
January 2022
Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital and School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China; Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital; and School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China; Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan, Republic of China.
Introduction: A combustible cigarette is a significant source of acrylamide, which is associated with numerous adverse effects. Electronic cigarette (e‑cigarette) is an emerging smoking device with uncertain health effects. OBJECTIVES The aim of the study was to explore the exposure risks of acrylamide (AA) by measuring biomarkers, hemoglobinadducts of AA (HbAA) and of glycidamide (HbGA), in serum samples of the general adult population with regard to different smoking status (smoking vs nonsmoking).
View Article and Find Full Text PDFElectrically Conductive CNT Composites at Loadings below Theoretical Percolation Values.
Nanomaterials (Basel)
March 2019
Department of Mechanical and Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93943, USA.
It is well established that dramatic increases in conductivity occur upon the addition of conductive filler materials to highly resistive polymeric matrices in experimental settings. However, the mechanisms responsible for the observed behavior at low filler loadings, below theoretical percolation limits, of even high aspect ratio fillers such as carbon nanotubes (CNT) are not completely understood. In this study, conductive composites were fabricated using CNT bundles dispersed in epoxy resins at diverse loadings, using different dispersion and curing protocols.
View Article and Find Full Text PDFLimonene-Based Epoxy: Anhydride Thermoset Reaction Study.
Molecules
October 2018
Institut Charles Gerhardt Montpellier-UMR 5253-CNRS, Université Montpellier, ENSCM⁻240 Avenue Emile Jeanbrau, CEDEX 5, 34296 Montpellier, France.
The development of epoxy thermosets from renewable resources is of paramount importance in a sustainable development context. In this paper, a novel bio-based epoxy monomer derived from limonene was synthesized without epichlorohydrine and characterized. In fact, this paper depicts the synthesis of bis-limonene oxide (bis-LO).
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!