Results 31 to 40 of about 1,318 (107)

Development and Evaluation of Automotive Lubricating Oil from Jatropha curcas Oil

open access: yesInternational Journal of Emerging Research in Engineering, Science, and Management
A Jatropha curcas-based bio-lubricant was developed and evaluated for automotive applications through acid esterification, base-catalyzed transesterification, in-situ peracetic acid epoxidation, and multi-additive blending.
Isaac Nsor   +2 more
doaj   +1 more source

Vegetable-Oil-Based Hyperbranched Polyester-Styrene Copolymer Containing Silver Nanoparticle as Antimicrobial and Corrosion-Resistant Coating Materials

open access: yesJournal of Chemistry, 2013
Pongamia oil (PO) was converted to Pongamia oil hydroxyl (POH) via epoxidation process. The esterification of POH with linolenic acid was carried out to form hyperbranched polyester (HBPE), and further styrenation was performed at the conjugated double ...
Manawwer Alam   +2 more
doaj   +1 more source

Transannular O‐Heterocyclization Reactions of Cyclododeca‐1,5,9‐triene Derivatives: A New Concept for the Preparation of Key Intermediates for Total Syntheses of Annonaceous Acetogenins

open access: yesHelvetica Chimica Acta, Volume 109, Issue 2, February 2026.
Four stereogenic centers are formed diastereoselectively in one step from a cyclic (E,E)‐1,5‐diene system using an electrophilic addition reaction. Subsequent ozonolytic cleavage of the intact Z‐double bond, followed by intramolecular nucleophilic substitution, yields an octahydroterfurandione with a threo,cis,threo configuration, an arrangement found ...
Holger Schimanski   +6 more
wiley   +1 more source

Study of total synthesis of 9α,10β-Bisangeloyloxy-7-epi-3E-agerafastin and 3-O- Feruloylcassine by copper-mediated nucleophilic substitution and gold-catalyzed cycloisomerization [PDF]

open access: yes
In this dissertation, the main work is the synthesis of 6-membered heterocyclic natural products by using the synthetic methods developed in our group, i.e. the copper-mediated nucleophilic substitution for synthesizing functionalized allenes, as well as,
Zhang, Yang
core   +1 more source

Developing Sustainable and Renewable Chemical Engineering Practices through Interning with a Private Chemical Company [PDF]

open access: yes, 2011
The objective of my Honors Thesis Project was to gain knowledge and experience in the means of chemical and bioprocess engineering by experiencing analytical and organic chemistry hands on in a laboratory setting and scaling up to an industrial chemical ...
Klein, Dorothy Madeline
core   +1 more source

Unraveling Lignin's Color Puzzle: From Chromophore Origins to Advanced Decolorization Strategies

open access: yesAggregate, Volume 7, Issue 1, January 2026.
This review provides a comprehensive systematic analysis of the research advancements in lignin color formation mechanisms and decolorization techniques, specifically focusing on three principal approaches: hydroxyl shielding, biomass fractionation, and physical methods. It highlights the systematic research approach of the review toward decolorization
Lizhen Huang, Zhuotong Wu, Li Shuai
wiley   +1 more source

Plant‐Derived Polyphenols for Sustainable Flame‐Retardant Coatings

open access: yesChemistry–Methods, Volume 6, Issue 1, January 2026.
This review compares plant‐derived polyphenolic flame retardants by synthesizing literature on their mechanisms, synergistic effects, and performance across polymers, wood, fibers, and coatings, while examining biodegradability, life cycle assessment, safe‐and‐sustainable‐by‐design, and consistency with circular‐economy principles for sustainable fire ...
Myeongjun Song, Woo Rin Lee, Kyueui Lee
wiley   +1 more source

Chemically Modified Natural Substances Screening for Biofilms Inhibition and Biofouling Control

open access: yesChemical Engineering Transactions, 2018
Biofilms can be characterized as a microorganisms community attached to a surface and enveloped by an extra polymeric substances complex array in a moist environment.
M.D.G. Silva   +8 more
doaj   +1 more source

Epoxidation of CNSL Mixture, Cardanol, and Cardol: A Sustainable Solution for PVC Plasticization

open access: yesEuropean Journal of Lipid Science and Technology, Volume 128, Issue 1, January 2026.
This study has its focus on the epoxidation of technical cashew nut shell liquid (CNSL), used as a PVC plasticizer. Epoxidation significantly enhanced plasticizing properties (increased elongation at break, decreased Young's modulus), along with improved thermal stability and chemical resistance.
Adélaïde Gartili   +3 more
wiley   +1 more source

Research Advances in the Synthesis of α‐ and β‐Damascone: From an Industrial Application Perspective

open access: yesJournal of Chemistry, Volume 2026, Issue 1, 2026.
Damascone, a precious natural fragrance primarily isolated from rose essential oil, is widely distributed in the flowers, leaves, or essential oils of various aromatic plants such as Rosa damascena, Osmanthus fragrans, Camellia sinensis, and Viola odorata.
Jian Huang   +4 more
wiley   +1 more source

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