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Sustainable Photopolymers in 3D Printing: A Review on Biobased, Biodegradable, and Recyclable Alternatives
biobased polymers degradable polymers photopolymerization reprocessable polymers resins
2024/1/11
The global market for 3D printing materials has grown exponentially in the last decade. Today, photopolymers claim almost half of the material sales worldwide. The lack of sustainable resins, applicab...
Sustainable alternative for bisphenol A epoxy resin high-performance and recyclable lignin-based epoxy vitrimers
Lignin Epoxy vitrimers Self-healing Shape memory polymer
2023/12/11
Epoxy vitrimers based on dynamic covalent bond chemistry have been developed in recent years as they can solve the problem of recycling and reuse for traditional thermosetting materials. Lignin as an ...
Room-Temperature Green Recyclable Epoxy Composites with Enhanced Mechanical and Thermal Properties Cross-Linked via B-O-C Bonds
Dynamic covalent bond Epoxy resin Green chemistry Polymerization Thermoset composites
2023/11/30
Without any catalyst, a novel way for the preparation of epoxy (EDSPs) and their composites by cross-link via dynamic B-O-C bonds was presented. The EDSPs with a glass transition temperature (T-g) of ...
Bio-based epoxy vitrimer for recyclable and carbon fiber reinforced materials: Synthesis and structure-property relationship
Vitrimer Epoxy-acid-anhydride system CFRMs Degradable Recycling
2023/11/30
Recycling or degradation of epoxy resins is difficult because of their covalent cross-linking structures, which causes resource crisis, environmental pollution, and resource waste. To address this cha...
To synthesize plastic, small monomer molecules need to be strung together like beads in a necklace, creating long polymer chains.
SiO2-Cu2O：An efficient and recyclable heterogeneous catalyst for N-benzylation of primary and secondary amines
Silica supported copper(I) oxide Benzylation Substituted amine Recyclability Heterogeneous catalysis
2014/3/9
A mild, effective, and selective procedure is reported for the mono N-benzylation and N,N-dibenzylation of primary amines as well as mono N-benzylation of secondary amines using silica-supported coppe...
Silica-bonded N-propylpiperazine sodium n-propionate as recyclable catalyst for synthesis of 4H-pyran derivatives（图）
Silica-bonded n-propylpiperazine sodium n-propionate Heterogeneous solid base catalyst Aldehyde
2013/12/5
Silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) was found to act as an efficient solid base for the preparation of a series of 4H-benzo[b]pyran derivatives. SBPPSP was used as a recyclab...
Silica-Bonded N-Propylpiperazine Sodium n-Propionate as Recyclable Basic Catalyst for Synthesis of 3,4-Dihydropyrano[c]chromene Derivatives and Biscoumarins（图）
silica-bonded N-propylpiperazine sodium n-propionate silica-bonded N-propylpiperazine methyl n-propionate aromatic aldehydes 3,4-dihydropyrano[c]chromenes biscoumarins
2013/10/4
A simple and efficient procedure for the preparation of silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) by the hydrolysis of silica-bonded N-propylpiperazine methyl n-propionate (SBPPMP)...
Synthesis of 2-Amino-4,6-diarylnicotinonitriles Using Silica-Bound N-Propyl Triethylenetetramine Sulfamic Acid as a Recyclable Solid Acid Catalyst（图）
silica-bonded N-propyl triethylenetetramine sulfamic acid 2-amino-4,6-diarylnicotinonitrile pyridine aldehyde solvent-free
2013/10/5
A simple and efficient procedure for the preparation of silica-bound N-propyl triethylenetetramine sulfamic acid (SBPTETSA) by the reaction of silica-bound N-propyl triethylenetetramine (SBPTET) with ...
Silica-Bonded N-Propyl Diethylenetriamine Sulfamic Acid as a Recyclable Solid Acid Catalyst for the Synthesis of α-Aminonitriles（图）
silica-bonded N-propyl diethylenetriamine sulfamic acid α-aminonitrile solid acid aldehyde
2013/10/7
Silica-bonded N-propyl diethylenetriamine sulfamic acid (SBPDSA) is employed as a recyclable catalyst to synthesize α-aminonitriles. These syntheses involved one-pot condensation of an aldehyde, an am...
Recyclable PUFs: Logically Reconfigurable PUFs
implementation / Logically Reconfigurable Physically Unclonable Functions (PUFs)
2012/3/23
Physically Unclonable Functions (PUFs) are security primitives that exploit intrinsic random physical variations of hardware components. In the recent years, many security solutions based on PUFs have...
Sulfuric Acid ([3-(3-Silicapropyl)sulfanyl]propyl)ester as a Recyclable Catalyst for the Synthesis of 4,4'-(Arylmethylene)bis(1H-pyrazol-5-ols)（图）
sulfuric acid sulfanyl]propyl)ester silica-bonded N-propyl sulfamic acid 3-methyl-l-phenyl-5-pyrazolone aldehydes
2013/10/12
Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester is employed as a recyclable catalyst for the condensation reaction between aromatic aldehydes and 3-methyl-l-phenyl-5-pyrazolone. This condensat...
Magnetic recyclable Ag catalysts with a hierarchical nanostructure
Nickel silicate Fe3O4 core Ag nanoparticles particles catalytic reaction
2015/3/30
This study reports the fabrication of a novel hierarchically structured nanocatalyst system possessing a well-defined nickel silicate (NS) protected Fe3O4 core and a layer of uniform Ag nanoparticles ...
Product development applied to collectors of recyclable materials: a case study in Florianopolis, Brazil
product development ergonomics recyclable residues
2009/12/1
The manual hoisting of loads continues to be an activity requiring attention in view of the harmful effects it exerts on the human body. Collectors of recyclable materials are still a key factor in th...
One-pot synthesis of amidoalkyl naphthols using NaHSO4.SiO2 as an efficient and recyclable heterogeneous catalyst
NaHSO4.SiO2 amidoalkyl naphthol multi-component reaction heterogeneous catalyst amide
2010/4/8
An efficient synthesis of amidoalkyl naphthols using silica supported sodium hydrogen sulphate as heterogeneous catalyst under a thermal solvent-free green procedure is described. This simple protoco...