Synthesis and characterization of the POSS/PCL-graphene oxide composites; the effects of gamma-radiation on its thermal properties and molecular weight

Poly (butylenes succinate) (PBS) was synthesized by using1, 4-butanediol and succinate as starting material, titanic acid ester and acetate as catalyst, and tried to improve PBS by changing end-group to carboxyl, hydroxyl and chlorine. The results of GPC showed, molecular weight of four kinds of polymer was all beyond seventy thousand; chemical structure of the polymer was measured by FTIR and nitrogen/sulfur/chlorine elementary analyzer; PBS controlled end-group had better thermal properties by DSC and TG; different end-group had influenced mechanical properties; and biodegradability experiment results showed biodegradable speed of PBS can be controlled by changing their end-group.

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Synthesis and Characterization of Y-Type Ferrite Reinforced Graphene Oxide Composites

Journal of Superconductivity and Novel Magnetism ◽

10.1007/s10948-020-05524-z ◽

2020 ◽

Vol 33 (9) ◽

pp. 2705-2713

Author(s):

M. Mohsin Saeed ◽

Muhammad Ajmal ◽

M. U. Islam ◽

M. Aamir Nazir

Keyword(s):

Graphene Oxide ◽

Synthesis And Characterization ◽

Oxide Composites

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Synthesis and characterization of an extractive-based bio-epoxy resin from beetle infested Pinus contorta bark

Green Chemistry ◽

10.1039/c4gc00459k ◽

2014 ◽

Vol 16 (7) ◽

pp. 3483-3493 ◽

Cited By ~ 64

Author(s):

Pei-Yu Kuo ◽

Mohini Sain ◽

Ning Yan

Keyword(s):

Molecular Weight ◽

Thermal Properties ◽

Epoxy Resin ◽

Epoxy Resins ◽

Pinus Contorta ◽

Tree Bark ◽

Synthesis And Characterization ◽

Low Molecular Weight ◽

Mechanical And Thermal Properties

The cured bio-epoxy resins synthesized from low molecular weight tree bark extractives displayed good mechanical and thermal properties.

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Controlled Synthesis and Characterization of the Structure and Property of Fe3O4 Nanoparticle-Graphene Oxide Composites

Acta Physico-Chimica Sinica ◽

10.3866/pku.whxb20110512 ◽

2011 ◽

Vol 27 (05) ◽

pp. 1261-1266 ◽

Cited By ~ 6

Author(s):

ZHANG Yi ◽

◽

CHEN Biao ◽

YANG Zu-Pei ◽

ZHANG Zhi-Jun ◽

...

Keyword(s):

Graphene Oxide ◽

Synthesis And Characterization ◽

Controlled Synthesis ◽

Structure And Property ◽

Oxide Composites

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Synthesis and Characterization of Lignin-Based Polyurethane as a Potential Compatibilizer

Indonesian Journal of Chemistry ◽

10.22146/ijc.27176 ◽

2018 ◽

Vol 18 (3) ◽

pp. 390 ◽

Cited By ~ 4

Author(s):

Salma Ilmiati ◽

Jana Hafiza ◽

Jaka Fajar Fatriansyah ◽

Elvi Kustiyah ◽

Mochamad Chalid

Keyword(s):

Molecular Weight ◽

Surface Tension ◽

Thermal Properties ◽

Polyethylene Glycol ◽

Thermal Degradation ◽

Molar Mass ◽

Sessile Drop ◽

Synthesis And Characterization ◽

Hyperbranched Structure

Lignin is one of the most abundant biopolymer on earth. It has polar and non-polar side due to its hyperbranched structure, but the polarity of lignin has a higher tendency than non-polarity. Lignin has potential to be compatibilizer if the portion of non-polar can be increased. This research is focused on investigate the synthesis of lignin-based polyurethane to enhance the portion of non-polarity in lignin. Lignin-based polyurethane was prepared by reacting variation 4,4'-Methylenebis(cyclohexyl isocyanate) (HMDI) and polyethylene glycol (PEG), then lignin was added to the reaction. In this study, the structure of lignin-based polyurethane was confirmed by NMR and FTIR. NMR and FTIR showed that lignin successfully grafted. NMR, also used to investigate the variation molar mass of PEG and isocyanate contents effects to polarity of lignin-based polyurethane. The polarity of lignin-based polyurethane decrease as the composition of HMDI and molecular weight of PEG increase. This result also occurs on the sessile drop test that used to determine surface tension of lignin-based polyurethane. The thermal properties of lignin-based polyurethane also investigate using STA. Based on STA, enhancement of composition of HMDI and PEG increase thermal degradation and resistance of lignin-based polyurethane.

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