Influence of calcium carbonate filler and mixing type process on structure and properties of styrene-acrylonitrile/ethylene-propylene-diene polymer blends

2012 ◽  
Vol 126 (4) ◽  
pp. 1257-1266 ◽  
Author(s):  
Ljerka Kratofil Krehula ◽  
Anita Ptiček Siročić ◽  
Zvonimir Katančić ◽  
Jasenka Jelenčić ◽  
Vera Kovačević ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Polymer Blends ◽  
Structure And Properties ◽  
Ethylene Propylene ◽  
Type Process ◽  
Carbonate Filler ◽  
Styrene Acrylonitrile

Solvent-assisted osmium staining of butyl acrylate and ethylene-propylene-diene in a styrene acrylonitrile matrix

1993 ◽  
Vol 51 ◽  
pp. 900-901 ◽  
Author(s):  
Gudrun A. Hutchins
Keyword(s):  
Butyl Acrylate ◽  
Room Temperature ◽  
Osmium Tetroxide ◽  
Staining Procedure ◽  
Reactive Site ◽  
Ethylene Propylene ◽  
Minimal Distortion ◽  
Styrene Acrylonitrile ◽  
Engineering Polymers ◽  
Effective Reaction

In order to optimize the toughening effect of elastomers in engineering polymers, it is necessary to characterize the size, morphology and dispersion of the specific elastomer within the polymer matrix. For unsaturated elastomers such as butadiene or isoprene, staining with osmium tetroxide is a well established procedure. The residual carbon-carbon double bond in these materials is the reactive site and forms a 1,2-dilato complex with the OsO4. Incorporation of osmium tetroxide into the elastomer not only produces sufficient contrast for TEM, but also crosslinks the elastomer sufficiently so that ultramicrotomy can be accomplished at room temperature with minimal distortion.Blends containing saturated elastomers such as butyl acrylate (BA) and ethylene propylene diene monomer (EPDM) cannot be stained directly with OsO4 because effective reaction sites such as C=C or -NH2 are not available in sufficient number. If additional reaction sites can be introduced selectively into the elastomer by a chemical reaction or the absorption of a solvent, a modified, two-step osmium staining procedure is possible.

The Structure and Properties of Polyamide/Liquid Crystal Polymer Blends

2012 ◽  
Vol 52 (8) ◽  
pp. 1064-1072 ◽  
Author(s):  
Youbing Li ◽  
Wen Shi ◽  
Zhenzhen Sun ◽  
Yan Pan ◽  
Xumin Sheng ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Blends ◽  
Liquid Crystal Polymer ◽  
Structure And Properties ◽  
Crystal Polymer

Perbandingan Karakteristik Plastik Biodegradable dari Biji Durian menggunakan Filler Kalsium Silikat dan Kalsium Karbonat

2021 ◽  
Vol 5 (1) ◽  
pp. 22
Author(s):  
S. Sigit Udjiana ◽  
Sigit Hadiantoro ◽  
Noor Isnaini Azkiya
Keyword(s):  
Calcium Carbonate ◽  
Water Absorption ◽  
Calcium Silicate ◽  
Smooth Surface ◽  
Biodegradable Plastics ◽  
Test Results ◽  
Absorption Properties ◽  
Water Absorption Test ◽  
Carbonate Filler ◽  
Durian Seed

Pada penelitian ini biji durian digunakan sebagai sumber pati dalam pembuatan plastik biodegradable. Penelitian ini bertujuan untuk mengetahui pengaruh jenis dan jumlah filler terhadap sifat biodegradable, sifat mekanik dan sifat water absorbtion pada plastik biodegradable berbasis pati biji buah durian. Plasticizer yang digunakan dalam penelitian ini adalah sorbitol  40%, sedangkan filler yang digunakan adalah Kalsium silikat (Ca2SiO4) dan Kalsium karbonat (CaCO3) dengan variable konsentrasi 2%, 4%, 6%, dan 8%. Dari hasil penelitian, diperoleh % yield dari pati biji buah durian sebesar 34,57%. Hasil dari plastik biodegradable terbaik dengan karakteristik transparan, tidak ada gelembung, lentur serta permukaan yang halus diperoleh pada variabel penambahan filler kalsium karbonat 4%. Hasil uji bio-degradasi paling mendekati standard ASTM D6400 diperoleh pada variabel kalsium karbonat 2%. Pada Uji water absorption hasil terbaik dicapai pada variabel kalsium silikat 8%. Uji tarik hasil terbaik diperoleh pada variabel kalsium silikat 6%.In this study, durian seeds were used as a source of starch in making biodegradable plastics. This study aims to determine the effect of the type and amount of filler on biodegradable properties, mechanical properties, and water absorption properties of biodegradable plastics based on durian fruit starch. The plasticizer used in this study was sorbitol 40%, while the filler used was Calcium silicate (Ca2SiO4) and Calcium carbonate (CaCO3) with variable concentrations of 2%, 4%, 6%, and 8%.. From the research results, the% yield of durian seed starch was 34.57%. The results of the best biodegradable plastic with the characteristics of transparent, no bubbles, flexible and smooth surface were obtained with the addition of 4% calcium carbonate filler variables. The bio-degradation test results closest to the ASTM D6400 standard were obtained in the 2% calcium carbonate variable. In the water absorption test, the best results were achieved at the 8% calcium silicate variable. The best tensile test results were obtained in the 6% calcium silicate variable.

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