Investigation on the crystallinity of crosslinked polyethylene

Sun, Wu-Ji; Liu, Xiong-Jun; Yuan, Li-Juan; Xiao, Han; Lu, Jian-Mei

doi:10.1007/s00289-024-05177-1

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…Better physical properties of UHMWPE fiber depend on higher molecular weight and long-chain crystallization. Ultra-high molecular weight diminishes the amorphous regions between chain termini, augments intermolecular attraction, and engenders a higher abundance of crystalline phases characterized by favorable mechanical properties [76][77][78][79]. Molecules arranged in elongated chains demonstrate a consistent capacity for energy absorption, thus reducing vulnerability to damage and facilitating the optimization of their mechanical properties [78][79][80][81][82][83].…”

Section: Chemical and Physical Propertiesmentioning

confidence: 99%

“…Ultra-high molecular weight diminishes the amorphous regions between chain termini, augments intermolecular attraction, and engenders a higher abundance of crystalline phases characterized by favorable mechanical properties [76][77][78][79]. Molecules arranged in elongated chains demonstrate a consistent capacity for energy absorption, thus reducing vulnerability to damage and facilitating the optimization of their mechanical properties [78][79][80][81][82][83]. According to a previous investigation [62], UHMWPE has better ultimate tensile strength and impact strength than HDPE.…”

Section: Chemical and Physical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Pan,

Tuladhar,

Yin

et al. 2024

Buildings

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This review explores the use of Ultra-High Molecular Weight Polyethylene (UHMWPE) fiber cloth as an innovative solution for the repair and reinforcement of concrete structures. UHMWPE is a polymer formed from a very large number of repeated ethylene (C2H4) units with higher molecular weight and long-chain crystallization than normal high-density polyethylene. With its superior tensile strength, elongation, and energy absorption capabilities, UHMWPE emerges as a promising alternative to traditional reinforcement materials like glass and carbon fibers. The paper reviews existing literature on fiber-reinforced polymer (FRP) applications in concrete repair in general, highlighting the unique benefits and potential of UHMWPE fiber cloth compared to other commonly used methods of strengthening concrete structures, such as enlarging concrete sections, near-surface embedded reinforcement, and externally bonded steel plate or other FRPs. Despite the scarcity of experimental data on UHMWPE for concrete repair, this review underscores its feasibility and calls for further research to fully harness its capabilities in civil engineering applications.

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Section: Chemical and Physical Propertiesmentioning

confidence: 99%

Section: Chemical and Physical Propertiesmentioning

confidence: 99%

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Pan,

Tuladhar,

Yin

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

Shape-Memory Effect of 4D-Printed Gamma-Irradiated Low-Density Polyethylene

Huang,

Tao,

Wang

2024

Crystals

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Four-dimensional-printed smart materials have a wide range of applications in areas such as biomedicine, aerospace, and soft robotics. Among 3D printing technologies, fused deposition molding (FDM) is economical, simple, and apply to thermoplastics. Cross-linked polyethylene (XLPE) forms a stable chemical cross-linking structure and shows good shape-memory properties, but the sample is not soluble or fusible, which makes it hard to be applied in FDM printing. Therefore, in this work, a new idea of printing followed by irradiation was developed to prepare 4D-printed XLPE. First, low-density polyethylene (LDPE) was used to print the products using FDM technology and then cross-linked by gamma irradiation was used. The printing parameters were optimized, and the gel content, mechanical properties, and shape-memory behaviors were characterized. After gamma irradiation, the samples showed no new peak in FTIR spectra. And the samples exhibited good shape-memory capabilities. Increasing the irradiation dose increased the cross-linking degree and tensile strength and improved the shape-memory properties. However, it also decreased the elongation at break, and it did not affect the crystallization or melting behaviors of LDPE. With 120 kGy of irradiation, the shape recovery and fixity ratios (Rr and Rf) of the samples were 97.69% and 98.65%, respectively. After eight cycles, Rr and Rf remained at 96.30% and 97.76%, respectively, indicating excellent shape-memory performance.

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Investigation on the crystallinity of crosslinked polyethylene

Cited by 2 publications

References 37 publications

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Feasibility of Repairing Concrete with Ultra-High Molecular Weight Polyethylene Fiber Cloth: A Comprehensive Literature Review

Shape-Memory Effect of 4D-Printed Gamma-Irradiated Low-Density Polyethylene

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