Mechanical properties and crystallinity of linear low density polyethylene based biocomposite film

Irwanto, Dodi; Pidhatika, Bidhari; Nurhajati, Dwi Wahini; Harjanto, Syaiful

doi:10.20543/mkkp.v35i2.5624

Cited by 8 publications

(5 citation statements)

References 11 publications

(14 reference statements)

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“…In the case of the pure LDPE sheet, a maximum contact depth of 15.7 µm was achieved, as evidently shown in Figure 2a Figure 2a that the biocomposite produced with 15 wt.% of ChCl pretreated RHW is significantly softer than other biocomposites. This behavior may be attributed to the fact that RHW was not uniformly distributed and improperly mixed in LDPE, indicating poor interfacial adhesion between LDPE and pretreated RHW [1]. The contact depth of the biocomposite based on 20 wt % pretreated RHW was increased by 12% as compared to untreated RHW (20 wt.% loading).…”

Section: Characterizationmentioning

confidence: 98%

“…In recent years, the focus of researchers has been diverted towards the development of lignocellulosic fiber (LF)-reinforced polymeric composites or biocomposites to replace the non-biodegradable composites because of their eco-friendly nature, low cost, low wear resistance, and good mechanical performance [1][2][3][4]. Nowadays, biocomposites have been widely utilized in various sectors, such as automotive, aerospace, construction, and packaging [5].…”

Section: Introductionmentioning

confidence: 99%

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Study of Nano-Mechanical Performance of Pretreated Natural Fiber in LDPE Composite for Packaging Applications

et al. 2020

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In this work, the effects of chemical pretreatment and different fiber loadings on mechanical properties of the composites at the sub-micron scale were studied through nanoindentation. The composites were prepared by incorporating choline chloride (ChCl) pretreated rice husk waste (RHW) in low-density polyethylene (LDPE) using melt processing, followed by a thermal press technique. Nanoindentation experiments with quasi continuous stiffness mode (QCSM) were performed on the surface of produced composites with varying content of pretreated RHW (i.e., 10, 15, and 20 wt.%). Elastic modulus, hardness, and creep properties of fabricated composites were measured as a function of contact depth. The results confirmed the appreciable changes in hardness, elastic modulus, and creep rate of the composites. Compliance curves indicated that the composite having 20 wt.% of pretreated RHW loading was harder compared to that of the pure LDPE and other composite samples. The values of elastic modulus and hardness of the composite containing 20 wt.% pretreated RHW were increased by 4.1% and 24% as compared to that of the pure LDPE, respectively. The creep rate of 42.65 nm/s and change in depth of 650.42 nm were also noted for the composite with RHW loading of 20 wt.%, which showed the substantial effect of holding time at an applied peak load of 100 mN. We believe that the developed composite could be a promising biodegradable packaging material due to its good tribo-mechanical performance.

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Section: Characterizationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Study of Nano-Mechanical Performance of Pretreated Natural Fiber in LDPE Composite for Packaging Applications

et al. 2020

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“…The obtained values revealed that the biocomposite at 20 wt% loading showed higher plastic behavior compared with biocomposites at 10 and 30 wt% loading. This behavior might be happened because of uniform distribution and proper mixing of RH in resin, resulting in chance of good adhesion between cellulosic rich fiber and matrix (Irwanto et al, 2020). In comparison with untreated biocomposites, treated RH biocomposites showed the lower plastic behavior and greater elastic recovery at higher loading which indicates the breakage of stiff wall of lignin in the RH after pretreatment (Das et al, 2019).…”

Section: Effect Of Pretreatment On Hardness and Modulusmentioning

confidence: 98%

Fabrication and Nanomechanical Characterization of Thermoplastic Biocomposites Based on Chemically Treated Lignocellulosic Biomass for Surface Engineering Applications

et al. 2021

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Diverse applications of polymeric materials have prompted development of eco-friendly, efficient, and economical materials. These characteristics can be obtained by incorporating appropriate fillers in the polymeric matrix. The objective of this work is to investigate impact of aqueous glycerol (Gly) treated rice husk (RH) on surface mechanical properties of produced biocomposites. RH was treated with aqueous Gly (75 wt%) and compounded with low density polyethylene (LDPE) at different loadings (10, 20, and 30 wt%). The resulting mixture was thermally pressed in molds to fabricate biocomposites. Surface mechanical properties such as elastic modulus, hardness, creep rate, and plasticity of biocomposites reinforced with untreated and treated RH were investigated using nanoindenter. Experimental values depicted that hardness (H) and elastic modulus (Es) of treated biocomposites were higher than untreated ones. Treated biocomposites showed the noticeable improvement in elastic modulus by 24 and 37% compared to untreated biocomposites at 20 wt% loading and neat LDPE, respectively. Reductions in the creep rate by 20 and 14% were observed for untreated and treated biocomposites, respectively, in comparison to the neat LDPE. H/E ratio was increased by 23 and 18% for treated and untreated biocomposites, respectively, as compared to virgin LDPE. Furthermore, mechanical and structural properties of untreated and treated RH are reported based on nanoindentation response and Fourier transform infrared spectroscopy (FTIR) techniques The study indicated that aqueous glycerol pretreatment can partially strip off non-cellulosic constituents from lignocellulose matrix to generate cellulose-rich pulp for engineered composite applications.

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“…In addition, the MFI of biocomposites was signi cantly affected by the cellulose micro ber types (Table 1). The MFI determines the owability of a polymer material (Irwanto et al 2019), and it indirectly re ects the viscosity and molecular weight of composites (Minoshima et al 1980). Generally, higher density leads to higher viscosity and lower owability.…”

Section: Varanasi Et Al 2013)mentioning

confidence: 99%

Characteristics of polypropylene biocomposites: effect of chemical treatment to produce cellulose microfiber

Moon¹,

Lee²,

Gwak³

et al. 2022

Preprint

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In this study, cellulose microfibers were prepared by sulfuric acid hydrolysis, glyoxal crosslinking and acetylation followed by air classifying mill, and their properties including chemical structure, particle size, appearance and crystallinity were investigated. The effect of cellulose microfibers properties on characteristics of polypropylene (PP) biocomposite, such as physical, thermal and mechanical properties, was also examined. The glyoxal crosslinking enhanced the brittleness of pulp fiber, resulting in smallest particle size of microfiber and thus less entanglement in the polymer matrix. When cellulose microfibers were incorporated into PP, the crystallinity of biocomposite decreased, irrespective of microfiber type due to interference crystallization during crystal growth. Additionally, glyoxal crosslinked cellulose microfiber decreased the crystallization temperature of biocomposite, which is different from the other types of cellulose microfiber. The good dispersibility and brittleness of glyoxal crosslinked microfiber contributed to enhanced mechanical properties of biocomposite compared to the other microfiber added biocomposites.

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Mechanical properties and crystallinity of linear low density polyethylene based biocomposite film

Cited by 8 publications

References 11 publications

Study of Nano-Mechanical Performance of Pretreated Natural Fiber in LDPE Composite for Packaging Applications

Study of Nano-Mechanical Performance of Pretreated Natural Fiber in LDPE Composite for Packaging Applications

Fabrication and Nanomechanical Characterization of Thermoplastic Biocomposites Based on Chemically Treated Lignocellulosic Biomass for Surface Engineering Applications

Characteristics of polypropylene biocomposites: effect of chemical treatment to produce cellulose microfiber

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