Environmental effects in biaxially orientated Polymethyl Methacrylate

Ng, Sze Ki; Kamaludin, Muhammad Ayyub; Dear, John P.; Blackman, B.R.K.

doi:10.1016/j.prostr.2018.12.051

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…Similarly to what had been observed in [38,40,44], the active environment causes a sharp reduction in the fracture resistance only after a critical interaction time 𝑡 * , which can be identified by looking at the intersection of the air and environment branches of the 𝐿𝑜𝑔 𝐽 vs. 𝐿𝑜𝑔 𝑡 curve. Under plane strain conditions this intersection occurs when the fracture mechanism in air is already brittle failure, which is governed by crazing.…”

Section: Figure 11 -𝐿𝑜𝑔 𝐽 Vs 𝐿𝑜𝑔 𝑡 Data For Compression Moulded Hdpe-...mentioning

confidence: 63%

“…The first examples of solvent-induced failures were reported in the literature starting from the '50s; to prevent unexpected breakdown of polymeric components, Environmental Stress Cracking has been extensively studied since. To name several examples, ESC can be observed when exposing polyethylene to aqueous detergents [1,3, or organic solvents [10,35,36], high impact polystyrene to sunflower oil [11,[37][38][39][40], polycarbonate to ethanol [41] or fat emulsions [39], phenolic resins to oil [41] or polymethylmethacrylate to different alcohols [8,40,[42][43][44].…”

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confidence: 99%

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Environmental stress cracking of high-density polyethylene under plane stress conditions

Contino

Andena

Rink

2021

Engineering Fracture Mechanics

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Section: Figure 11 -𝐿𝑜𝑔 𝐽 Vs 𝐿𝑜𝑔 𝑡 Data For Compression Moulded Hdpe-...mentioning

confidence: 63%

mentioning

confidence: 99%

Environmental stress cracking of high-density polyethylene under plane stress conditions

Contino

Andena

Rink

2021

Engineering Fracture Mechanics

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“…Research was carried out on thermoplastics and polymer composites based on resins [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. To name several examples, SCC can be observed when exposing polyethylene to aqueous detergents or organic solvents [24], high impact polystyrene to sunflower oil [25], the stress cracking behavior of injection moulded PET was investigated using sodium hydroxide (NaOH) aqueous solutions in various concentrations as active fluids [26], polycarbonate to ethanol or fat emulsions [27].…”

Section: Introductionmentioning

confidence: 99%

Susceptibility to Stress Corrosion Cracking of Selected Amorphous Polymer Materials in a Sea-Water Environment

Chomiak,

Szymiczek,

Sarraj

2024

Adv. Sci. Technol. Res. J.

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This paper aimed to determine the susceptibility of polycarbonate and polymethylmethacrylate to corrosion cracking under specific operating conditions. The tests included static tensile and flexure, impact strength, and microscopic examination. Due to the synergistic effect of tensile stresses and seawater environment, numerous cracks are observed. Moreover, aging conditions did not significantly reduce the strength properties of the tested specimens; thus, higher resistance to stress corrosion cracking does not have a close relationship with the material's mechanical properties.

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Improving Environmental Stress Cracking Resistance of High‐Density Polyethylene Grades by Comonomer Addition and Nanocomposite Approach

Mansouri,

Ghasemi Hamedani,

Zou

et al. 2024

Chemistry A European J

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The aim is to determine the effect of polymer density, correlated to the comonomer content, and nanosilica addition on the mechanical and Environmental Stress Cracking Resistance (ESCR) characteristics of high‐density polyethylene (HDPE). In this regard, five HDPE samples with similar Melt Flow Index (MFI) and molar mass but various densities were acquired from a petrochemical plant. Two polymerization reactors work in series and differ only in the amount of 1‐buene comonomer fed to the second reactor. To ascertain the microstructure of the studied samples, GPC and SSA (successive self‐nucleation and annealing) analyses were accomplished. All samples resulted having similar characteristics but slightly various SCB/1000C=7.26‐9.74 (SCB=Short Chain Branching). Consequently, meanwhile studied HDPEs reveal similar notched impact and stress at yield values, the tensile modulus, stress‐at‐break, and elongation‐at‐break tend to demonstrate different results with the SCB content. More significantly, ESCR characteristic varied considerably with SCB/1000C extent, so that higher amount of SCB acknowledged advanced ESCR. Notably, blending HDPE sample containing higher amount of SCB/1000C, with 3 wt.% of chemically modified nanosilica enhanced ESCR characteristic by 40%. DFT (Density Functional Theory) calculations unveiled the role of the comonomer, quantitatively by binding energies and qualitatively by Non Covalent Interaction (NCI) plots.

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Environmental effects in biaxially orientated Polymethyl Methacrylate

Cited by 7 publications

References 4 publications

Environmental stress cracking of high-density polyethylene under plane stress conditions

Environmental stress cracking of high-density polyethylene under plane stress conditions

Susceptibility to Stress Corrosion Cracking of Selected Amorphous Polymer Materials in a Sea-Water Environment

Improving Environmental Stress Cracking Resistance of High‐Density Polyethylene Grades by Comonomer Addition and Nanocomposite Approach

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