Results 21 to 30 of about 12,911 (183)

Binary green blends of poly(Lactic acid) with poly(butylene adipate-co-butylene terephthalate) and poly(butylene succinate-co-butylene adipate) and their nanocomposites [PDF]

open access: yes, 2021
Poly(lactic acid) (PLA) is the most widely produced biobased, biodegradable and biocompatible polyester. Despite many of its properties are similar to those of common petroleum-based polymers, some drawbacks limit its utilization, especially high ...
Coiai S.   +4 more
core   +2 more sources

Synthesis and Characterization of High Glycolic Acid Content Poly(glycolic acid-co-butylene adipate-co-butylene terephthalate) and Poly(glycolic acid-co-butylene succinate) Copolymers with Improved Elasticity

open access: yesACS Omega, 2023
Poly(glycolic acid) (PGA) is a biodegradable polymer with high gas barrier properties, mechanical strength, and heat deflection temperature. However, PGA's brittleness severely limits its application in packaging, creating a need to develop PGA-based copolymers with improved elasticity that maintain its barrier properties and hydrolytic degradability ...
Alastair Little   +5 more
openaire   +3 more sources

Difluoromethylenation of Alkynes: Streamlined Access to Allyl Difluorides

open access: yesAngewandte Chemie, EarlyView.
Stabilizing primary oxocarbenium in HF/pyridine unlocks a direct alkyne difluoromethylenation – an efficient route to synthetically‐relevant allyl difluorides in a single step. ABSTRACT A direct difluoromethylenation of alkynes has been developed using HF/pyridine as a dual acidic and fluorinating medium. The reaction proceeds via in situ generation of
Fabien Naullet   +4 more
wiley   +2 more sources

Development of a Facial Toner Formulation (Cosmetic) Considering the Surface and Aggregation Properties of Non-Ionic Surfactants in Water–Glycol Systems

open access: yesColloids and Interfaces
This study presents the development and comprehensive characterization of innovative formulations for facial toners based on micellar water–glycol systems.
Wiktoria Orzechowicz   +5 more
doaj   +1 more source

Virucidal efficacy of compositions based on lanthanum nitrate hexahydrate

open access: yesЖурнал микробиологии, эпидемиологии и иммунобиологии
Background. The most urgent problem of medicine is the fight against viral diseases. Preventive measures in the form of antiseptics with virucidal effect (VE) play an important role.
Elena V. Berezhnaya   +6 more
doaj   +1 more source

Derivatives of Aluminium with Glycols and Catechol

open access: yes, 1962
Reactions of aluminium isopropoxide with glycols (ethylene, 1,3-, 2, 3-, 1.4.butylene, bexylene glycols, and pinacol) have been studied. The reaction in the molar ratio of 1:1 affords monoisopropoxy glycollates whereas the reaction with excess of glycols
R. C. Mehrotra, R. K. Mehrotra
core   +1 more source

Hydrolysis of tetraethoxysilane in various associated media of diols

open access: yesТонкие химические технологии
Objectives. To investigate the specific features of tetraethoxysilane (TEOS) hydrolysis in associated media of saturated diols and their esters in acidic media. Propylene- and butylene glycols and ethylcarbitol were selected as associated systems.Methods.
Alevtina M. Bondareva   +2 more
doaj   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

open access: yesAdvanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali   +16 more
wiley   +1 more source

A Gas-Liquid Chromatographic Method for Quantitation of 1,3-Butylene Glycol in Whole Blood or Plasma and the Separation of the Short Chain Glycols

open access: yes, 1986
A microanalytical method with direct on-column specimen injection for determination of 1,3-butylene glycol (1,3-butanediol) in whole blood or plasma using gas-liquid chromatography with flame ionization is described.
Moffatt, E. J.   +2 more
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

open access: yesAdvanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim   +5 more
wiley   +1 more source

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