Development of polyvinyl chloride/waste rice husk ash/modified montmorillonite nanocomposite using epoxidized soybean oil as green additive substituting synthetic plasticizer and compatibiliser

Plasticized polyvinyl chloride (PVC) was fabricated using epoxidized soybean oil (ESBO) as a secondary bioplasticizer with dioctyl phthalate (DOP). The PVC/MFA/CB composites were prepared by melt mixing of the plasticized PVC with modified fly ash (MFA), carbon black N330 (CB), and polychloroprene (CR) in a Haake Rheomix mixer using a rotation speed of 50 rpm at 175°C for 6 min and then compressed by Toyoseiki pressure machine under 15 MPa. The effect of ESBO content on morphology, melt viscosity, tensile properties, and flame retardancy of PVC/MFA/CB composites was investigated. The obtained results showed that the incorporation of ESBO has significantly enhanced the processing ability, Young’s modulus, tensile strength, and elongation at break of the PVC/MFA/CB composites. The torque of PVC/MFA/CB composites was increased to approximately 12% when 50 wt% of DOP was replaced by ESBO. When ESBO was 20 wt% in comparison with DOP weight, the elongation at break, tensile strength, and Young’s modulus of the composites were increased to 48%, 24%, and 4.5%, respectively. Correspondingly, thermogravimetric analysis results confirmed that ESBO had improved the thermostability of the PVC composites. The ESBO have potential as a secondary bioplasticizer replacement material for DOP owing to their better thermomechanical stability.

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Effects of DOPO-Grafted Epoxidized Soybean Oil on Fracture Toughness and Flame Retardant of Epoxy Resin/Rice Husk Silica Hybrid

Macromolecular Research ◽

10.1007/s13233-020-8102-4 ◽

2020 ◽

Vol 28 (9) ◽

pp. 826-834 ◽

Cited By ~ 4

Author(s):

Cuong Manh Vu ◽

Quang-Vu Bach

Keyword(s):

Fracture Toughness ◽

Soybean Oil ◽

Flame Retardant ◽

Epoxy Resin ◽

Rice Husk ◽

Epoxidized Soybean Oil ◽

Rice Husk Silica ◽

Silica Hybrid

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Migration of epoxidized soybean oil from polyvinyl chloride/polyvinylidene chloride food packaging wraps into food simulants

Environmental Science and Pollution Research ◽

10.1007/s11356-017-0951-9 ◽

2017 ◽

Vol 25 (5) ◽

pp. 5033-5039 ◽

Cited By ~ 1

Author(s):

Min Sun Choi ◽

Shaheed Ur Rehman ◽

Hyeon Kim ◽

Sang Beom Han ◽

Jeongmi Lee ◽

...

Keyword(s):

Soybean Oil ◽

Polyvinyl Chloride ◽

Food Packaging ◽

Epoxidized Soybean Oil ◽

Polyvinylidene Chloride ◽

Food Simulants

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Mechanical and barrier properties of polyvinyl chloride plasticized with dioctyl phthalate, epoxidized soybean oil, and epoxidized cardanol

Journal of Vinyl and Additive Technology ◽

10.1002/vnl.21831 ◽

2021 ◽

Author(s):

Sukanya Satapathy ◽

Aruna Palanisamy

Keyword(s):

Soybean Oil ◽

Polyvinyl Chloride ◽

Barrier Properties ◽

Dioctyl Phthalate ◽

Epoxidized Soybean Oil

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Phosphorous-jointed epoxidized soybean oil and rice husk-based silica as the novel additives for improvement mechanical and flame retardant of epoxy resin

Journal of Fire Sciences ◽

10.1177/0734904119900990 ◽

2020 ◽

Vol 38 (1) ◽

pp. 3-27 ◽

Cited By ~ 10

Author(s):

Cuong Manh Vu ◽

Van-Huy Nguyen ◽

Quang-Vu Bach

Keyword(s):

Impact Strength ◽

Flexural Strength ◽

Soybean Oil ◽

Epoxy Resin ◽

Rice Husk ◽

Critical Stress Intensity Factor ◽

Epoxidized Soybean Oil ◽

Proton Nuclear Magnetic Resonance ◽

Limiting Oxygen Index ◽

Chemical Structures

The combined effects of phosphorous-jointed epoxidized soybean oil and rice husk–based silica on the flammability and mechanical properties of epoxy resin were examined in detail. The chemical structures of the epoxidized soybean oil, phosphorous-jointed epoxidized soybean oil, and rice husk–based silica were confirmed using Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. Many characteristics of the obtained composite materials were examined, such as the tensile properties, impact strength, flexural strength, critical stress intensity factor (KIC), dynamic mechanical analysis, and flammability. The incorporation of both 10 phr phosphorous-jointed epoxidized soybean oil and 20 phr rice husk–based silica into the epoxy resin yielded the optimum values of the flexural strength, tensile strength, impact strength, and KIC, with increases of 87.78%, 67.23%, 109.34%, and 111.32%, respectively, compared with pristine samples. The limiting oxygen index increased from 23.1% to 29.3%, the peak heat-release rate decreased by up to 37.2%, and the sample satisfied the UL94 V-0 rating.

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Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.11.20-26 ◽

2019 ◽

pp. 20-26

Keyword(s):

Mechanical Activation ◽

Rice Husk ◽

Amorphous Silica ◽

Silicon Oxide ◽

Rice Husk Ash ◽

Pozzolanic Activity ◽

Maximum Solubility ◽

Laboratory Conditions ◽

Before And After ◽

Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

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