scholarly journals Synthesis and Characterization of methyl Methacrylate Modified Poly (Ester-Amide) Resins from Melia Azedarach Seed Oil as Coating Material

2016 ◽  
Vol 13 (1) ◽  
pp. 50-56
Author(s):  
Sageer Ahamad ◽  
S. A. Ahmad ◽  
A. Hasnat
Keyword(s):  
Methyl Methacrylate ◽  
Seed Oil ◽  
Polymeric Materials ◽  
Melia Azedarach ◽  
Chemical Corrosion ◽  
Step Growth ◽  
Step Growth Polymerization ◽  
The Cost ◽  
Edible Seed

Synthesis of polymeric materials from natural renewable resources has attracted a lot of attention of researcher throughout the world as they not only reduce the dependency on petrochemicals but also friendly to the environment. Utilization of non-traditional and non-edible vegetable oils in the synthesis of valuable polymeric materials solves the problem of waste disposal as well as bringing down the cost of end products. Melia azedrach seed oil (MASO), a non-traditional and non-edible seed oil is utilized for the synthesis of poly(ester-amide) (MAPEA) by the aminolysis with diethanolamine followed by step-growth polymerization with phthalicacid. To improve the performances and utility of the MAPEA,methyl methacrylate (MMA) classified as hard monomer in the literature of acrylate embedded to it in different phr to obtained methyl methacrylate modified poly (ester-amide) (MMMAPEA) resins. The MMMAPEA resins were characterized by physic-chemical analysis as per standard reported methods. The structural elucidation of the resin was carried out by spectral analyses. Physico-mechanical and chemical/corrosion resistance performances of the MMMAPEA resins were investigated for the optimization of MMA content.

Polymer characterization

2004 ◽  
Author(s):  
Ian L. Hosier ◽  
Alun S. Vaughan
Keyword(s):  
Molecular Weight ◽  
Electrode Materials ◽  
Polymeric Materials ◽  
Optical Nonlinearity ◽  
Polymer Science ◽  
New Materials ◽  
Wide Range ◽  
Step Growth ◽  
Step Growth Polymerization ◽  
Increasing Demand

Polymer science is, of course, driven by the desire to produce new materials for new applications. The success of materials such as polyethylene, polypropylene, and polystyrene is such that these materials are manufactured on a huge scale and are indeed ubiquitous. There is still a massive drive to understand these materials and improve their properties in order to meet material requirements; however, increasingly polymers are being applied to a wide range of problems, and certainly in terms of developing new materials there is much more emphasis on control. Such control can be control of molecular weight, for example, the production of polymers with a highly narrow molecular weight distribution by anionic polymerization. The control of polymer architecture extends from block copolymers to other novel architectures such as ladder polymers and dendrimers. Cyclic systems can also be prepared, usually these are lower molecular weight systems, although these also might be expected to be the natural consequence of step-growth polymerization at high conversion. Polymers are used in a wide range of applications, as coatings, as adhesives, as engineering and structural materials, for packaging, and for clothing to name a few. A key feature of the success and versatility of these materials is that it is possible to build in properties by careful design of the (largely) organic molecules from which the chains are built up. For example, rigid aromatic molecules can be used to make high-strength fibres, the most highprofile example of this being Kevlar®; rigid molecules of this type are often made by simple step-growth polymerization and offer particular synthetic challenges as outlined in Chapter 4. There is now an increasing demand for highly specialized materials for use in for example optical and electronic applications and polymers have been singled out as having particular potential in this regard. For example, there is considerable interest in the development of polymers with targeted optical properties such as second-order optical nonlinearity, and in conducting polymers as electrode materials, as a route towards supercapacitors and as electroluminescent materials. Polymeric materials can also be used as an electrolyte in the design of compact batteries.

Fluorescence characterization of ablated polymeric materials: Poly(methyl methacrylate) doped with 1‐ethylpyrene

1990 ◽  
Vol 67 (5) ◽  
pp. 2240-2244 ◽  
Author(s):  
Akira Itaya ◽  
Akihiko Kurahashi ◽  
Hiroshi Masuhara ◽  
Yoshio Taniguchi ◽  
Masashi Kiguchi
Keyword(s):  
Methyl Methacrylate ◽  
Polymeric Materials ◽  
Poly Methyl Methacrylate

scholarly journals Production and Characterization of Biodiesel from Aphanamixis polystachya Seed Oil

2020 ◽  
Vol 68 (2) ◽  
pp. 129-136
Author(s):  
Sazia Ifteqar ◽  
Rajia Sultana ◽  
Sujit Banik ◽  
AFM Mustafizur Rahman
Keyword(s):  
Seed Oil ◽  
Biodiesel Production ◽  
Optimum Conditions ◽  
Alternative Diesel Fuel ◽  
Biodiesel Standards ◽  
Ft Ir ◽  
Acid Catalyzed ◽  
Edible Seed ◽  
Ft Ir Spectroscopy

The present study focuses on the utilization of non-edible Aphanamixis polystachya seed oil as a potential feedstock for the production of biodiesel. The extracted oil from non-edible seed could not be directly exploited for biodiesel production owing to its high free fatty acid (FFA) content of 5.785%, so acid catalyzed esterification was applied to reduce FFA of oil to zero followed by base-catalyzed transesterification to convert esterified product to its mono-esters. Thermogravimetric analysis (TGA) revealed that the mass percentage corresponding to biodiesel under optimum conditions was 74.38%. The conversion of the triglycerides in the oil into biodiesel through transesterification was confirmed using FT-IR spectroscopy. The elemental analysis of the produced biodiesel was studied. The produced biodiesel had properties which were comparable with biodiesel standards and could be utilized as an alternative diesel fuel without any hardware modifications. Dhaka Univ. J. Sci. 68(2): 129-136, 2020 (July)

Viscoelastic Characterization of Polymers Using Dynamic Instrumented Indentation

2004 ◽  
Vol 841 ◽  
Author(s):  
C. C. White ◽  
P. L. Drzal ◽  
M. R. VanLandingham
Keyword(s):  
Methyl Methacrylate ◽  
Excellent Agreement ◽  
Polymeric Materials ◽  
Instrumented Indentation ◽  
Rheological Data ◽  
Dimethyl Siloxane ◽  
Glassy Materials ◽  
Dynamic Nanoindentation ◽  
Pdms Sample

ABSTRACTDynamic nanoindentation was performed on a poly(methyl methacrylate, PMMA), and two different poly(dimethyl siloxane, PDMS) samples having different crosslink densities. Comparison was made between dynamic nanoindentation and rheological instrumentation measurements in the glassy and rubbery plateau regions of polymeric materials. Excellent agreement between bulk rheological data and dynamic nanoindentation data was observed for the two glassy materials and the less compliant of the two PDMS samples. Results were divergent for the more compliant PDMS sample.

scholarly journals Synthesis and Characterization of Polyesteramide Urethane Derived from Melia Azedarach Seed Oil

2015 ◽  
Vol 31 (2) ◽  
pp. 1169-1173 ◽  
Author(s):  
Sageer Ahamad ◽  
Ghazala Imran ◽  
S. A Ahmad ◽  
A. Hasnat
Keyword(s):  
Seed Oil ◽  
Synthesis And Characterization ◽  
Melia Azedarach

1,4:3,6-Dianhydrohexitols: Original platform for the design of biobased polymers using robust, efficient, and orthogonal chemistry

2012 ◽  
Vol 85 (3) ◽  
pp. 511-520 ◽  
Author(s):  
Pascal Dimitrov Raytchev ◽  
Céline Besset ◽  
Etienne Fleury ◽  
Jean-Pierre Pascault ◽  
Julien Bernard ◽  
...  
Keyword(s):  
Polymer Materials ◽  
Structure Property ◽  
Materials Properties ◽  
Property Relationship ◽  
Biobased Polymers ◽  
Structure Property Relationship ◽  
Step Growth ◽  
Step Growth Polymerization ◽  
The Impact

1,4:3,6-Dianhydrohexitols (DAHs) are nontoxic and sustainable diols that have been extensively applied as monomers for the preparation of polymer materials by step-growth polymerization processes. The presence of two reactive alcohol groups was exploited to design a library of symmetric and asymmetric stereocontrolled alkyne- and/or azide-functionalized AA/BB and AB monomers suitable for thermal or copper(I)-catalyzed azide-alkyne cycloaddition (TAAC and CuAAC). Step-growth polymerization of these monomers yielded a series of linear polytriazoles as well as partially biosourced networks using a combination of AB + A2B2 derivatives. Characterization of the resulting materials allowed for the establishment of a thorough structure–property relationship emphasizing the impact of monomer stereochemistry and cycloaddition regioselectivity on materials properties.

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