Natural Polymer <i>Eucommia Ulmoides</i> Rubber: A Novel Material

Wei, Xingneng; Peng, Pai; Peng, Feng; Dong, Juane

doi:10.1021/acs.jafc.0c07560

Cited by 88 publications

(57 citation statements)

References 203 publications

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“…These compounds coincide with those reported by Bhadra et al 2 who identified by GC–MS the polyisoprenes present in jackfruit latex. According to Wei et al 29 the transformation of polyisoprene molecules into limonene, as well as their oxidation products during pyrolysis, depends on the molecular weight (≥6000) and the abundance of the polymer, which indicates that EP‐6 shows a higher content of polyisoprenes.…”

Section: Resultsmentioning

confidence: 99%

Polyisoprenes obtained from jackfruit latex (Artocarpus heterophyllus L.): Extraction and characterization

Ramos‐Martínez

González-Cruz

Calderón‐Santoyo

et al. 2022

J of Applied Polymer Sci

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Jackfruit latex is a residue from the agricultural production of this fruit, which does not have an application in the food or pharmaceutical industry. The objectives of the study were to (1) extract the polyisoprenes from jackfruit latex using the surfactant sodium lauryl sulfate, and (2) characterize their physicochemical and techno-functional properties. The chemical composition, foaming and emulsifying capacity, and thermal behavior. According to the proximal chemical analysis of the extracts, the major content were lipophilic compounds (89%), including polyisoprenes. Regarding the emulsifying properties, the concentrates extracts showed intermediate values for the emulsifying activity index (32-59 m 2 /g) and stability times from 15 to 95 min. The thermal analysis showed endothermic events (50-65 C) associated with the melting of the concentrate, as well as exothermic events related to the crystallization of the polyisoprenes. The FTIR spectra indicates the presence of the polyisoprenes in the extracts, the stretching of the C═C bonds in 1704 at 1712 cm À1 are characteristic of cis-1,4 polyisoprene bonds, and at 980 cm À1 the C H bending. The physicochemical and techno-functional properties of polyisoprene extracts indicate that they could be used in emulsions or electrohydrodynamic encapsulation processes.

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Section: Resultsmentioning

confidence: 99%

Polyisoprenes obtained from jackfruit latex (Artocarpus heterophyllus L.): Extraction and characterization

Ramos‐Martínez

González-Cruz

Calderón‐Santoyo

et al. 2022

J of Applied Polymer Sci

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“…As the second natural rubber resource and one of the main components, E. ulmoides rubber, it is worth mentioning that although E. ulmoides rubber is not a novel isolated and discovered compound, in the past few years, the great potential application of E. ulmoides rubber has received increasing attention in the fields of the environment, agriculture, engineering, and biomedical engineering etc. Very recently, a comprehensive review summarized the novel applications of E. ulmoides in diverse fields [ 137 ].…”

Section: Novel Components Isolated From E Ulmoides and Their Biological Activitiesmentioning

confidence: 99%

Traditional application and modern pharmacological research of Eucommia ulmoides Oliv.

et al. 2021

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As a Traditional Chinese Medicine, Eucommia ulmoides Oliv. has been used for the treatment of various diseases since ancient times, involving lumbar pain, knee pain, osteoporosis, hepatoprotection, paralysis, intestinal haemorrhoids, vaginal bleeding, abortion, spermatorrhoea, foot fungus, anti-aging etc. With the developing discovery of E. ulmoides extracts and its active components in various pharmacological activities, E. ulmoides has gained more and more attention. Up to now, E. ulmoides has been revealed to show remarkable therapeutic effects on hypertension, hyperglycemia, diabetes, obesity, osteoporosis, Parkinson’s disease, Alzheimer’s disease, sexual dysfunction. E. ulmoides has also been reported to possess antioxidant, anti-inflammatory, neuroprotective, anti-fatigue, anti-aging, anti-cancer and immunoregulation activities etc. Along these lines, this review summarizes the traditional application and modern pharmacological research of E. ulmoides, providing novel insights of E. ulmoides in the treatment of various diseases.

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“…Eucommia ulmoides is a relict plant deposited by quaternary glaciers. The bark, leaves, fruits and seeds of eucommia ulmoides all contain eucommia ulmoides rubber (EUG), which is a type of bio-based polymer material [ 10 , 11 ]. EUG, an isomer of natural rubber (NR), crystallizes at room temperature by the ordered trans arrangement.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Millable Polyurethane Elastomer/Eucommia Ulmoides Rubber Composites with Superior Sound Absorption Performance

et al. 2021

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Sound absorbing materials combining millable polyurethane elastomer (MPU) and eucommia ulmoides rubber (EUG) were successfully fabricated via a physical blending process of EUG and MPU. The microstructure, crystallization performances, damping, mechanical and sound absorption properties of the prepared MPU/EUG composites were investigated systematically. The microstructure surface of various MPU/EUG composites became rough and cracked by the gradual incorporation of EUG, resulting in a deteriorated compatibility between EUG and MPU. With the increase of EUG content, the storage modulus (E’) of various MPU/EUG composites increased in a temperature range of −50 °C to 40 °C and their loss factor (tanδ) decreased significantly, including a reduction of the tanδ of MPU/EUG (70/30) composites from 0.79 to 0.64. Specifically, the addition of EUG sharply improved the sound absorption performances of various MPU/EUG composites in a frequency range of 4.5 kHz–8 kHz. Compared with that of pure MPU, the sound absorption coefficient of the MPU/EUG (70/30) composite increased 52.2% at a pressure of 0.1 MPa and 16.8% at a pressure of 4 MPa, indicating its outstanding sound absorption properties.

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Natural Polymer Eucommia Ulmoides Rubber: A Novel Material

Cited by 88 publications

References 203 publications

Polyisoprenes obtained from jackfruit latex (Artocarpus heterophyllus L.): Extraction and characterization

Polyisoprenes obtained from jackfruit latex (Artocarpus heterophyllus L.): Extraction and characterization

Traditional application and modern pharmacological research of Eucommia ulmoides Oliv.

Fabrication of Millable Polyurethane Elastomer/Eucommia Ulmoides Rubber Composites with Superior Sound Absorption Performance

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