نتایج جستجو برای: unsaturated polymer

تعداد نتایج: 109327  

2015
Thomas J. Farmer Rachael L. Castle James H. Clark Duncan J. Macquarrie Iolanda Francolini

Utilisation of bio-derived platform molecules in polymer synthesis has advantages which are, broadly, twofold; to digress from crude oil dependence of the polymer industry and secondly to reduce the environmental impact of the polymer synthesis through the inherent functionality of the bio-derived platform molecules. Bulk polymerisation of bio-derived unsaturated di-acids has been employed to p...

2003
J. Preiss G. Ashwell

Alginic acid, a high molecular weight linear polymer obtained from seaweed, is widely used as an added product to food due to its property of forming highly viscous solutions. Originally described as a polymer of n-mannuronic acid, it has now been demonstrated, by the chemical studies of Fischer and DGrfel (l), to be a ,&l-4-linked polymer of n-mannuronic and L-guluronic acid. The ratio of the ...

2003
J. Preiss

Alginic acid, a high molecular weight linear polymer obtained from seaweed, is widely used as an added product to food due to its property of forming highly viscous solutions. Originally described as a polymer of n-mannuronic acid, it has now been demonstrated, by the chemical studies of Fischer and DGrfel (l), to be a ,&l-4-linked polymer of n-mannuronic and L-guluronic acid. The ratio of the ...

2003
GILBERT ASHWELL

Alginic acid, a high molecular weight linear polymer obtained from seaweed, is widely used as an added product to food due to its property of forming highly viscous solutions. Originally described as a polymer of n-mannuronic acid, it has now been demonstrated, by the chemical studies of Fischer and DGrfel (l), to be a ,&l-4-linked polymer of n-mannuronic and L-guluronic acid. The ratio of the ...

Journal: :The Journal of biological chemistry 1962
J PREISS G ASHWELL

Alginic acid, a high molecular weight linear polymer obtained from seaweed, is widely used as an added product to food due to its property of forming highly viscous solutions. Originally described as a polymer of n-mannuronic acid, it has now been demonstrated, by the chemical studies of Fischer and DGrfel (l), to be a ,&l-4-linked polymer of n-mannuronic and L-guluronic acid. The ratio of the ...

Journal: :Journal of the American Chemical Society 2008
Matthew Carnes Daniela Buccella Theo Siegrist Michael L Steigerwald Colin Nuckolls

Here we describe the metathesis reactions of a strained eight-membered ring that contains both alkene and alkyne functionality. We find that the alkyne metathesis catalyst produces polymer through a ring-opening alkyne metathesis reaction that is driven by the strain release from the monomer. The strained monomer provides unusual reactivity with ruthenium-based alkene metathesis catalysts. We i...

Journal: :Gazi university journal of science 2022

In this study, an experimental research was conducted in developing and characterising sugarcane bagasse pineapple leaf particulate re?nforced polyester res?n compos?tes. Unsaturated resin (UPR) reinforced with particulates varied proportions (0 – 25 wt. %) by mould casting. Morphology mechanical properties of the composites were examined. There a good dispersion resin. The composite demonstrat...

2014

Investigation of Physical, Mechanical, and Morphological Properties of Acrylonitrile Butadiene Styrene on Unsaturated Polyester Resins a D., Nouzari , b * O., Arjmand , c M., Mouavi a , c Department of Industrial Polymer Engineering, Islamic Azad University, Science and Research Yazd Branch, Yazd, Iran. b Nourabad Mamasani Branch, Islamic Azad University, Nourabad, Iran. _______________________...

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