Reinforcing Efficiency of Pyrolyzed Spent Coffee Ground in Styrene-Butadiene Rubber

Boopasiri, Supparoek; Sae‐Oui, Pongdhorn; Lundee, Sirilug; Takaewnoi, Sukanya; Siriwong, Chomsri

doi:10.1007/s13233-021-9072-x

Cited by 10 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Flory–Rehner equations (Equations and ) were used to determine the approximate value of the cross‐linking density.

v_{normalr} = \frac{w_{1} / ρ_{d}}{\frac{w_{1}}{ρ_{d}} + \frac{((), w_{2} goodbreak- w_{3})}{ρ_{s}}},

C = - \frac{([], \ln ((), 1 goodbreak- v_{r}) goodbreak+ v_{r} goodbreak+ χ_{1} v_{r}^{2})}{([], v_{1} ((), v_{r}^{1 / 3} goodbreak- \frac{v_{normalr}}{2}))},

where v r is the volume fraction of the swollen specimen, C is the cross‐linking density of the specimen, and v 1 is the molar volume of toluene (105.7 cm 3 /mol). The Flory–Huggins interaction parameter between SBR and toluene ( χ 1 ) is 0.378, 53,54 and ρ d and ρ s are the densities of SBR and toluene ( ρ s = 0.865 g/cm 3 ), respectively.…”

Section: Methodsmentioning

confidence: 99%

“…where v r is the volume fraction of the swollen specimen, C is the cross-linking density of the specimen, and v 1 is the molar volume of toluene (105.7 cm 3 /mol). The Flory-Huggins interaction parameter between SBR and toluene (χ 1 ) is 0.378, 53,54 and ρ d and ρ s are the densities of SBR and toluene (ρ s = 0.865 g/cm 3 ), respectively.…”

Section: Cross-linking Densitymentioning

confidence: 99%

See 1 more Smart Citation

Effect of interfacial sacrificial bonds on the vulcanization and mechanical properties of styrene butadiene rubber/talcum powder composites

Wang,

He,

Shen

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

Talcum powder (Talc) contains large amounts of silica; however, its poor surface compatibility with diene rubber makes it difficult to develop its application in styrene‐butadiene rubber (SBR). Herein, a method to enhance the compatibility of Talc with SBR via interfacial sacrificial bonds of 4‐vinylpyridine and Mg2+/Zn2+ is proposed. Poly(isoprene‐co‐4‐vinylpyridine) copolymers, designated PIPVP‐10 and PIPVP‐20, were synthesized via reversible addition‐fragmentation chain transfer polymerization. PM1‐Talc and PM2‐Talc were obtained by spraying PIPVP‐10 and PIPVP‐20 solutions onto the Talc surface, followed by drying. During thermal vulcanization, the double bonds in the copolymers can be grafted directly onto the rubber skeleton. The vulcanization rates of the SBR/PM1‐Talc and SBR/PM2‐Talc complexes were accelerated by 65% and 77%, respectively, compared with that of SBR/Talc. Simultaneously, the interfacial interaction between SBR and Talc is enhanced owing to the formation of metal–ligand bonds between pyridine and Mg2+/Zn2+. As a result, the tensile strengths of SBR/PM1‐Talc and SBR/PM2‐Talc are 5.8 and 7.9 MPa, 65% and 127% higher than that of SBR/Talc (3.5 MPa).

show abstract

“…The Flory–Rehner equations (Equations and ) were used to determine the approximate value of the cross‐linking density.

v_{normalr} = \frac{w_{1} / ρ_{d}}{\frac{w_{1}}{ρ_{d}} + \frac{((), w_{2} goodbreak- w_{3})}{ρ_{s}}},

C = - \frac{([], \ln ((), 1 goodbreak- v_{r}) goodbreak+ v_{r} goodbreak+ χ_{1} v_{r}^{2})}{([], v_{1} ((), v_{r}^{1 / 3} goodbreak- \frac{v_{normalr}}{2}))},

Section: Methodsmentioning

confidence: 99%

Section: Cross-linking Densitymentioning

confidence: 99%

Effect of interfacial sacrificial bonds on the vulcanization and mechanical properties of styrene butadiene rubber/talcum powder composites

Wang,

He,

Shen

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…A more recent work used SCG treated via pyrolysis as a filler for styrene–butadiene rubber (5, 10, 15, and 20 wt.%) [ 162 ]. The pyrolysis treatment (700 °C and 900 °C) decreased the average particle size of the SCG and improved the surface roughness, leading to a better interaction with the rubber than untreated SCG/rubber composites.…”

Section: Scg Polymer Compositesmentioning

confidence: 99%

Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production

et al. 2022

View full text Add to dashboard Cite

Spent coffee grounds (SCG) are a current subject in many works since coffee is the second most consumed beverage worldwide; however, coffee generates a high amount of waste (SCG) and can cause environmental problems if not discarded properly. Therefore, several studies on SCG valorization have been published, highlighting its waste as a valuable resource for different applications, such as biofuel, energy, biopolymer precursors, and composite production. This review provides an overview of the works using SCG as biopolymer precursors and for polymer composite production. SCG are rich in carbohydrates, lipids, proteins, and minerals. In particular, carbohydrates (polysaccharides) can be extracted and fermented to synthesize lactic acid, succinic acid, or polyhydroxyalkanoate (PHA). On the other hand, it is possible to extract the coffee oil and to synthesize PHA from lipids. Moreover, SCG have been successfully used as a filler for composite production using different polymer matrices. The results show the reasonable mechanical, thermal, and rheological properties of SCG to support their applications, from food packaging to the automotive industry.

show abstract

“…Most of the bio-based fillers also have some additional advantages such as low cost, light weight, and abundancy. Lignin, corn, sugar cane, rice husk, starch, wood, bamboo, and coconut shell are some of the examples among cellulosic bio-fillers [8,9]. There are several studies in literature on using bio-based/natural resources as fillers in thermoplastics and rubbers in order to reduce the harmful effect of CB.…”

Section: Introductionmentioning

confidence: 99%

Coffee Grounds as Renewable Filler in NBR Biocomposites

Öncel,

Ünügül,

ABACI

et al. 2023

Preprint

View full text Add to dashboard Cite

Using biological/renewable resources as filler or modifier in both thermoplastics and rubbers has been of a great interest in order to reduce negative effects of traditional petroleum/natural gas based fillers. In this study, the main goal was the use of spent (waste) coffee grounds as a natural alternative filler to carbon black in acrylonitrile butadiene rubber (NBR) based compounds. Stabilization effect of fresh coffee grounds was also investigated. Both fresh and spent coffee grounds were gradually replaced with CB in a reference (control) NBR compound formulation. Rheological, physico-mechanical, thermal, morphological, and dielectric properties of the biocomposites were tested and compared with the control. Processability has been affected positively in the case of using coffee grounds thanks to the presence of triacyl groups in coffee. Improved abrasion resistance and lower oil swelling could be obtained for coffee containing compounds. In conclusion, spent coffee grounds were found to be a good natural alternative filler for preparing NBR based biocomposites without a significant change in material properties.

show abstract

Reinforcing Efficiency of Pyrolyzed Spent Coffee Ground in Styrene-Butadiene Rubber

Cited by 10 publications

References 37 publications

Effect of interfacial sacrificial bonds on the vulcanization and mechanical properties of styrene butadiene rubber/talcum powder composites

Effect of interfacial sacrificial bonds on the vulcanization and mechanical properties of styrene butadiene rubber/talcum powder composites

Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production

Coffee Grounds as Renewable Filler in NBR Biocomposites

Contact Info

Product

Resources

About