Anhydride copolymers were synthesized from acrylic acid and fatty alcohols (C12- C18, C18:1). These n-alkyl acrylates were treated with maleic anhydride in presence of hydrogen peroxide in second step, to form anhydride copolymer. The anhydride copolymer further reacted to n-butylamine to form poly (n-acrylate-co-nbutylmalemide). The compounds were used as pour point depressant (PPD) additive. The synthesized experimental pour point depressants were added in different concentrations to conventional base stock (150N and 500N), which had no other additive content before. Synthesized additives were effective as viscosity index improver but also lowered the pour point. These results were comparable with industrial product. Furthermore all additives showed antiwear (AW) and extreme pressure (EP) properties. The resultant anhydride copolymer can act as multifunctional additive, which is novelty of the work.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.5650/jos.62.167 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bioderived copolymer alternatives to poly(styrene--maleic anhydride) RAFT-mediated copolymerization.
Polym Chem
January 2025
Department of Chemistry and Polymer Science, Stellenbosch University Matieland 7602 South Africa
Poly(styrene--maleic anhydride) (SMAnh) is a petroleum-based copolymer with desirable properties that afford utility in both industrial and academic fields. The reversible addition-fragmentation chain transfer (RAFT)-mediated polymerization of the bioderived comonomers, indene and itaconic anhydride, was explored using three chain transfer agents with varying activity, and generally well-controlled ( < 1.40) polymerizations were observed.
View Article and Find Full Text PDFTunable Cluster Luminescence and High Quantum Yield in Amine-Modified Maleic Anhydride Polymers.
Langmuir
January 2025
The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
Cluster luminescent materials (CLgens) with nonconjugated structures have attracted considerable attention. However, their low quantum yield and limited emission wavelengths, which are confined to the blue-green spectrum, continue to restrict their applicability. In this study, maleic anhydride polymer chains were modified with -tristyrylene-1,2-diamine (TPM-NH), creating a secondary donor-acceptor structure through freely rotatable phenyl groups and amino-anhydride interactions.
View Article and Find Full Text PDFCore-Shell PLGA Nanoparticles: In Vitro Evaluation of System Integrity.
Biomolecules
December 2024
Faculty of Chemical and Pharmaceutical Technologies and Biomedical Preparations, D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, Moscow 125047, Russia.
Article Synopsis
- The study compared core-shell nanoparticles with a PLGA core and various polymer shells, focusing on their structural integrity.
- Different methods were used to prepare the nanoparticles, and fluorescent labeling was employed to analyze their properties and confirm core-shell structure.
- Results showed that the polymer shells improved cellular uptake in glioma cells and maintained structural integrity, suggesting a useful framework for nanoparticle development.
A novel recyclable hydrolyzed nanomagnetic copolymer catalyst for green, and one-pot synthesis of tetrahydrobenzo[b]pyrans.
Sci Rep
December 2024
Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
Polymer-based catalysts have garnered significant interest for their efficiency, reusability, and compatibility with various synthesis processes. In catalytic applications, polymers offer the advantage of structural versatility, enabling functional groups to be tailored for specific catalytic activities. In this study, we developed a novel magnetic copolymer of methyl methacrylate and maleic anhydride (PMMAn), synthesized via in situ chemical polymerization of methyl methacrylate onto maleic anhydride, using benzoyl peroxide as a free-radical initiator.
View Article and Find Full Text PDFA novel HEMA copolymer hydrogel with antifouling and anti-inflammatory activity as a promising medical device coating layer to prevent microbial adhesion.
Biofouling
January 2025
Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan.
Compared to antimicrobial agents, anti-adhesive surfaces can reduce bacteria adhesion and biofilm formation in catheters, providing better selectivity, efficiency, and device life span. In this research, novel anionic surface biomaterials were created and tested to reduce microbial adhesion and colonization in medical device coating. Maleic anhydride (MA) was polymerized with 2-HEMA in varying amounts to produce a p(HEMA--MA) hydrogel copolymer.
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!