Lignin and soy oil-derived polymeric biocomposites by “grafting from” RAFT polymerization

2016 ◽  
Vol 18 (18) ◽  
pp. 4974-4981 ◽  
Author(s):  
Yuzhi Xu ◽  
Liang Yuan ◽  
Zhongkai Wang ◽  
Perry A. Wilbon ◽  
Chunpeng Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Soybean Oil ◽  
Raft Polymerization ◽  
Soy Oil ◽  
Linear Polymers ◽  
Grafting From

The “grafting from” RAFT enabled synthesis of soybean oil and lignin polymeric biocomposites that exhibit enhanced mechanical properties compared to linear polymers is reported.

Controlling Mechanical Properties of 3D Printed Polymer Composites through Photoinduced Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization

2021 ◽  
Author(s):  
Xiaobing Shi ◽  
Jin Zhang ◽  
Nathaniel Alan Corrigan ◽  
Cyrille Boyer
Keyword(s):  
Mechanical Properties ◽  
Silica Nanoparticles ◽  
Polymer Composites ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Polymer Networks ◽  
Material Design ◽  
Advanced Material ◽  
Reversible Addition ◽  
3D Printed

Reversible addition-fragmentation chain-transfer (RAFT) polymerization has been widely exploited to produce homogeneous and living polymer networks for advanced material design. In this work, we incorporate silica nanoparticles (SNPs) into a...

scholarly journals Synthesis of Poly(ester-graft-methyl methacrylate) on a Macroinitiator with Lateral Sulfonyl Chloride Groups by Atom Transfer Radical Polymerization

2021 ◽  
Vol 63 (4) ◽  
pp. 385-391
Author(s):  
T. K. Meleshko ◽  
A. B. Razina ◽  
N. N. Bogorad ◽  
M. P. Kurlykin ◽  
A. V. Kashina ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Polymer Brushes ◽  
Sulfonyl Chloride ◽  
Physical And Mechanical Properties ◽  
Degree Of Polymerization ◽  
Side Chains ◽  
Grafting From

Abstract New polymer brushes with an ester backbone and poly(methyl methacrylate) side chains are synthesized by polycondensation and polymerization methods. The initiating groups are sulfonyl chloride groups laterally attached to the polyester chain. PMMA side chains are grafted by the ATRP method according to the “grafting from” multicenter macroinitiator strategy. The conditions for the polymerization processes in a controlled mode are selected, and the ways of targeted regulation of the degree of polymerization of methacrylate side chains are determined. Using the synthesized copolymers self-supporting films are obtained, and their physical and mechanical properties are studied.

Novel soy oil based polyurethane composites: Fabrication and dynamic mechanical properties evaluation

2004 ◽  
Vol 39 (5) ◽  
pp. 1887-1890 ◽  
Author(s):  
J.-P. Latere Dwan'isa ◽  
A. K. Mohanty ◽  
M. Misra ◽  
L. T. Drzal ◽  
M. Kazemizadeh
Keyword(s):  
Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Soy Oil ◽  
Dynamic Mechanical ◽  
Polyurethane Composites

Evaluation of natural and epoxidized vegetable oil in elastomeric compositions for tread rubber

2021 ◽  
pp. 009524432110386
Author(s):  
Camila Taliotto Scarton ◽  
Nayrim Brizuela Guerra ◽  
Marcelo Giovanela ◽  
Suélen Moresco ◽  
Janaina da Silva Crespo
Keyword(s):  
Mechanical Properties ◽  
Stearic Acid ◽  
Natural Rubber ◽  
Soybean Oil ◽  
Vegetable Oil ◽  
Epoxidized Soybean Oil ◽  
Natural State ◽  
Vegetable Soybean ◽  
Tire Industry ◽  
Petroleum Derivatives

In the tire industry, the incorporation of natural origin oils in the development of elastomeric formulations has been one of the alternatives to reduce the use of petroleum derivatives, with a high content of toxic compounds. In this work, soybean vegetable oil was investigated as a lubricant and co-activator in sulfur-vulcanized natural rubber compounds. The soybean oil was used in its natural state and chemically modified by the epoxy ring’s introduction in its structure. In an internal mixer a standard formulation of natural rubber, five formulations replacing a conventional aromatic oil and stearic acid by vegetable oil, and a formulation without an activation system were prepared. The natural and epoxidized soybean oil was characterized chemically, and the elastomeric compositions were evaluated by mechanical and rheological analysis. The mechanical properties showed satisfactory results when vegetable soybean oil was used as a lubricant and could be a substitute for conventional aromatic oils, thus guaranteeing reduction of aromatic polycyclic content in the formulations. The crosslink degree and the rheological characteristics of the samples prepared with vegetable soybean oil were similar to the natural rubber standard sample. The formulations without the zinc oxide and stearic acid evidenced the need for activators in the vulcanization reaction, as they presented properties below standard. We verified that the epoxidized soybean oil, even when promoting better dispersion of the fillers, interfered in the crosslink formation, and consequently there was a decrease in the mechanical properties of these formulations. Finally, we indicated vegetable soybean oil as a substitute for aromatic oil and stearic acid, in the elastomeric compositions used to manufacture treads.

PET-RAFT polymerization catalyzed by cadmium selenide quantum dots (QDs): Grafting-from QDs photocatalysts to make polymer nanocomposites

2020 ◽  
Vol 11 (5) ◽  
pp. 1018-1024 ◽  
Author(s):  
Yifan Zhu ◽  
Eilaf Egap
Keyword(s):  
Quantum Dots ◽  
Cadmium Selenide ◽  
Polymer Nanocomposites ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Cdse Qds ◽  
Reversible Addition ◽  
Cadmium Selenide Quantum Dots ◽  
Grafting From ◽  
Chain Transfer Polymerization

We report herein the first example of light-controlled radical reversible addition–fragmentation chain transfer polymerization facilitated by cadmium selenide quantum dots and the grafting-from CdSe QDs to create polymer-QDs nanocomposites.

Tuning Surface Mechanical Properties by Amplified Polyelectrolyte Self-Assembly: Where “Grafting-from” Meets “Grafting-to”

2013 ◽  
Vol 5 (11) ◽  
pp. 4913-4920 ◽  
Author(s):  
Ang Li ◽  
Shivaprakash N. Ramakrishna ◽  
Tobias Schwarz ◽  
Edmondo M. Benetti ◽  
Nicholas D. Spencer
Keyword(s):  
Mechanical Properties ◽  
Self Assembly ◽  
Grafting From
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