Bio-based cyclized <i>Eucommia ulmoides</i> gum elastomer for promising damping applications

Qi, Xin; Xie, Fei; Zhang, Jichuan; Zhang, Liqun; Yue, Dongmei

doi:10.1039/c9ra07856h

Cited by 23 publications

(21 citation statements)

References 31 publications

(47 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15,16 By tailoring the crosslinking structure, EUG can be easily utilized as thermal plastics, elastomers and SMMs. [17][18][19] The shape memory properties of partially crosslinked EUG have been associated with its crystalline/melting phase transition. 15,20 However, the semicrystalline crosslinked EUG suffers from a low deformation temperature as well as poor mechanical performance, which restricts its application as SMM.…”

Section: Introductionmentioning

confidence: 99%

Bio‐based Eucommia ulmoides gum/low density polyethylene shape memory composites reinforced by zinc methacrylate

Pei

Xia

Zhang

et al. 2021

Polymer International

View full text Add to dashboard Cite

In this paper, we present an efficient and green extraction process for Eucommia ulmoides gum (EUG) to solve the tricky problems in separation and precipitation, providing a new idea for the industrialization of EUG extraction. Subsequently, the obtained EUG was blended with low density polyethylene (LDPE) and zinc methacrylate (ZDMA) to fabricate novel shape memory composites with both covalent and ionic crosslinking networks. It was found that the improvement in mechanical performance and enhancement in shape recovery ability of the EUG/LDPE/ZDMA composites was attributable to the Zn 2+ -based ionic crosslinks. The EUG/LDPE/ZDMA shape memory composites could be candidates in the production of medical fixing materials, hot-shrinkable tubes and packaging products.

show abstract

Section: Introductionmentioning

confidence: 99%

Bio‐based Eucommia ulmoides gum/low density polyethylene shape memory composites reinforced by zinc methacrylate

Pei

Xia

Zhang

et al. 2021

Polymer International

View full text Add to dashboard Cite

show abstract

“…To characterize the effect of hydrogenation on EUG crystallization, the WAXD analyses of EUG and other four HEUG samples with HD from 15.6% to 23.2% were carried out at room temperature (shown in Figure 6(a)). The peaks 1, 2, 3, 4, 5, 6, and peaks 3, 5 are the characteristic peaks for the pure α‐form crystal and β‐form crystal, respectively 45 . The existence of the two form crystal also indicates that the heat treatment of the samples is a very important factor to guide crystallization 53 .…”

Section: Resultsmentioning

confidence: 99%

“…The peaks 1, 2, 3, 4, 5, 6, and peaks 3, 5 are the characteristic peaks for the pure α-form crystal and β-form crystal, respectively. 45 The existence of the two form crystal also indicates that the heat treatment of the samples is a very important factor to guide crystallization. 53 Since EUG is a partially crystalline polymer, the WAXD pattern of EUG consists of a crystalline and an amorphous diffraction part.…”

Section: Thermal and Crystallization Properties Of Heugmentioning

confidence: 99%

“…Subsequently, chemical modification methods such as epoxidation, [36][37][38][39] grafting [40][41][42][43] were used to prepare EUG based elastomers. Our research group successfully prepared EUG based elastomers by using epoxy ring-opening reaction 44 and cyclization 45 modification methods, and applied them to self-healing, damping materials fields. Nevertheless, the introduction of polar groups or cyclized sequence will change the structure and reduces molecular structural integrity, which makes it difficult to be self-reinforcing by SIC as NR does.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A high toughness elastomer based on natural Eucommia ulmoides gum

Zhao

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Eucommia ulmoides gum (EUG) is a kind of bio-based polymer with similar structure to natural rubber (NR). However, it behaves as hard plastic at room temperature due to crystallization, which makes it not as widely used as NR. Herein, a new bio-based elastomer (HEUG) was prepared by rhodiumcatalyzed hydrogenation of EUG for the first time. 1 H-NMR and 13 C-NMR spectroscopy confirmed the structure of HEUG, and wide angle X-ray diffraction, polarizing light microscopy showed that the crystal was gradually destroyed in the hydrogenation process, finding that when the degree of hydrogenation is more than 16.5%, HEUG transformed from plastic to elastomer at room temperature. Besides, the Synchrotron Radiation experiment showed that HEUG with hydrogenation of 85.9% could be self-reinforced by strain-induced crystallization during stretching, which make it has excellent tensile strength and toughness (21.4 MPa and 68.1 MJ m −3 , respectively). This new bio-based elastomer has the potential to replace NR and has a wide application prospect in rubber industry.

show abstract

“…Polymers, with their unique viscoelasticity, have been widely used as vibration damping materials for both the prevention of vibrational fatigue failure and the reduction of unwanted noise 34 . The transition region from the glassy to rubbery state has the maximum potential for vibration damping 35 . Generally, the temperature range with tan δ > 0.3 is taken as a standard to evaluate the damping capacity 32,36,37 .…”

Section: Resultsmentioning

confidence: 99%

Integrating ricinoleic acid derivates to thermoset polymers with tunable properties

Hernández

Marcovich

Mosiewicki

2021

Polymer International

View full text Add to dashboard Cite

A highly functionalized biobased derivative of ricinoleic acid (MMRA) was synthesized through a two‐step procedure: maleinization of the hydroxyl group naturally present in this fatty acid followed by methacrylation of the carboxylic acid groups. The chemical structure of MMRA was confirmed by 1H NMR, infrared spectroscopy, gel permeation chromatography and analytical determinations. Thermoset polymers were further obtained by the free radical polymerization of MMRA with different amounts of styrene. The dependence of the color/transparency and tensile properties on sample composition was evaluated. Moreover, thermogravimetric and dynamic mechanical analyses were carried out to further characterize the obtained materials. All polymers were highly translucent with lightness values in the range 87.4–90.8 and opacity values below 13%. Their glass transition temperatures (Tg) ranged from 61.5 °C for the homopolymer MMRA to 104 °C for the copolymer containing 30 wt% MMRA. The rubbery storage modulus increased with MMRA content confirming the high functionality of the green precursor that led to polymers with high crosslinking density. Notably, pronounced damping capacity was also found in all copolymers made from MMRA / styrene. © 2021 Society of Chemical Industry

show abstract

Bio-based cyclized Eucommia ulmoides gum elastomer for promising damping applications

Abstract: A cyclized Eucommia ulmoides gum (CEUG) elastomer with various degrees of cyclization for promising damping applications.

Cited by 23 publications

References 31 publications

Bio‐based Eucommia ulmoides gum/low density polyethylene shape memory composites reinforced by zinc methacrylate

Bio‐based Eucommia ulmoides gum/low density polyethylene shape memory composites reinforced by zinc methacrylate

A high toughness elastomer based on natural Eucommia ulmoides gum

Integrating ricinoleic acid derivates to thermoset polymers with tunable properties

Contact Info

Product

Resources

About