Effect of reinforcing particles on hydrolytic degradation behavior of poly (lactic acid) composites

Li, Meixian; Kim, Sung-Ha; Choi, Sung Woong; Goda, Koichi; Lee, Woo-Il

doi:10.1016/j.compositesb.2016.04.029

Cited by 47 publications

(26 citation statements)

References 26 publications

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“…Therefore, the recent interest in the development of biodegradable materials has attracted increasing attention towards PLA nanocomposites [100]. Table 4 summarizes the very last PLA-graphenic composites prepared by means of melt blending [101][102][103][104][105][106][107][108][109][110][111] and other biodegradable and biocompatible polymers [112][113][114][115][116][117].…”

Section: Biodegradable and Biocompatible Polymersmentioning

confidence: 99%

“…Multiple extrusion cycles improved the dispersion of GnP in the polymer matrix, reducing the size of the aggregates (see Figure 3). In contrast, hydrolytic degradation of PLA under immersion conditions in a solution of NaOH was faster for PLA nanocomposites containing different nanophases, including graphene, than that of neat PLA [105]. The effect of the different types of nanofillers (graphene and graphene-CNTs blends) of PLA has been explored [108][109][110].…”

Section: Biodegradable and Biocompatible Polymersmentioning

confidence: 99%

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Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments

et al. 2020

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This review is focused on the recent developments of nanocomposite materials that combine a thermoplastic matrix with different forms of graphene or graphene oxide nanofillers. In all cases, the manufacturing method of the composite materials has been melt-processing, in particular, twin-screw extrusion, which can then be followed by injection molding. The advantages of this processing route with respect to other alternative methods will be highlighted. The results point to an increasing interest in biodegradable matrices such as polylactic acid (PLA) and graphene oxide or reduced graphene oxide, rather than graphene. The reasons for this will also be discussed.

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Section: Biodegradable and Biocompatible Polymersmentioning

confidence: 99%

Section: Biodegradable and Biocompatible Polymersmentioning

confidence: 99%

Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments

et al. 2020

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“…12. Another possible explanation is the adhesion between the cellulose and the PLA matrix: the poor adhesion may have served as the primary path for water entering the matrix 49,50 . In the present study, the fibre-matrix interface was not sufficient for high cellulose loading and subsequently increased the total interface surface.…”

Section: C (%) T G (°C) T Cc (°C) T M (°C) T G (°C) T Cc (°C) T M (°Cmentioning

confidence: 99%

Influence of amorphous cellulose on mechanical, thermal, and hydrolytic degradation of poly(lactic acid) biocomposites

Ishak

Rosli

Ahmad

2020

Sci Rep

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Eco-friendly materials such as poly(lactic acid) (PLA) and cellulose are gaining considerable interest as suitable substitutes for petroleum-based plastics. Therefore, amorphous cellulose (AC) was fabricated as a new reinforcing material for PLA biocomposites by modifying a microcrystalline cellulose (MCC) structure via milling. In this study, the mechanical properties, thermal properties, and degradability of PLA were analysed to compare the effects of both MCC and AC on PLA. The tensile and impact properties improved at an optimum value with AC at 8 wt% and 4 wt% fibre loading, respectively. Notably, a scanning electron micrograph analysis revealed improved AC fibre-matrix adhesion, compared with MCC fibre-matrix adhesion, as well as excellent interaction between AC and PLA. Both MCC and AC improved the hydrolytic degradation of PLA. Moreover, the biocomposites with AC exhibited superior degradation when the incorporation of AC improved the water absorption efficiency of PLA. These findings can expand AC applications and improve sustainability. Pollution from slowly or non-degrading plastics has received increasing attention from developed countries, global organisations, and world leaders. In response, interest in the production of biopolymers as alternatives to petroleum-based plastics has been growing within the polymer community 1. In recent years, the potential of biopolymers has been explored for the development of green composites, such as polybutylene-succinate, starch, and poly(lactic acid) (PLA) 2-4. Among these, PLA has been extensively studied owing to its sustainability, biocompatibility, and non-toxicity 5-7. PLA is a thermoplastic polyester consisting of two different lactides (L&D) derived from the chiral nature of lactic acid. The polymerisation of the various lactides yields stereoisomers of poly(ʟ-lactic acid) (PLLA), poly(dlactic acid) (PDLA), poly(d, L-lactic acid) (PDLLA), and poly(L-lactide-coD , L-lactide) (PLDLLA) 8, 9. PLA is obtained from the fermentation of simple sugars in agricultural waste to form lactic acid 10. It has been utilised in diverse applications, including plastic packaging, automotive components, clothing, and medical equipment. However, its inadequate durability, thermal stability, degradation, and oxygen barrier properties have limited its use in specific applications, such as packaging 11,12. Although PLA can be deemed a biodegradable polymer, it does not entirely fit in this category. In particular, recent findings have indicated that PLA has contributed to disposal problems 13-15. This main drawback of PLA can be overcome by the introduction of natural reinforcing fibres, which will preserve the green properties of PLA. Biopolymers reinforced with cellulose fibre have attracted significant interest owing to the excellent properties of cellulose, such as low density, affordability, excellent biodegradability, high specific strength, and promising sustainability 16,17. Cellulose is the most abundant polymeric material and comprises both crystalline and amorphous re...

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“…Its degradation behavior not only influenced by its molecular weight, chemical structure and bond type, but also by nature and mechanisms involved in the degradation process. [ 25 ] The nature and mechanisms of degradation process include biodegradation, [ 26 ] enzymatic degradation, [ 27 ] hydrolytic degradation, [ 28‐30 ] and in vitro degradation. [ 31 ] However, most of the researchers have concentrated on hydrolytic degradation.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, morphological, thermal properties and hydrolytic degradation behavior of polylactic acid/polypropylene carbonate blends prepared by solvent casting

Haneef

Buys

Shaffiar

et al. 2020

Polymer Engineering & Sci

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The preparation of polylactic acid (PLA) and polypropylene carbonate (PPC) blend films by using the solvent casting method is to improve the properties of pure PLA. The blends' mechanical and thermal properties, morphological as well as hydrolytic degradation behavior are evaluated. The tensile test proved that the increase of PPC from 0 wt% to 75 wt% could improve the elongation of pure PLA when the graph showed a significant increase of the elongation from 10% to 1000%. Scanning Electron Microscopy (SEM) supported the significant increase in elongation of the blends when it shows a definite phase separation in 75/25 PLA/PPC, where 25% of PPC has formed islands in the PLA matrix. Differential scanning calorimetry indicates the partial miscibility of the blends where two peaks of the glass transition temperature moved towards each other when the amount of PPC increases. Fourier transform infrared (FTIR) spectroscopy revealed a possible intermolecular interaction between two polymers, which affects the miscibility of the blends. Finally, the hydrolytic degradation test indicates that the degradation started from the PLA phase and the blends' degradation rate decrease as wt% of PPC increase.

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Effect of reinforcing particles on hydrolytic degradation behavior of poly (lactic acid) composites

Cited by 47 publications

References 26 publications

Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments

Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments

Influence of amorphous cellulose on mechanical, thermal, and hydrolytic degradation of poly(lactic acid) biocomposites

Mechanical, morphological, thermal properties and hydrolytic degradation behavior of polylactic acid/polypropylene carbonate blends prepared by solvent casting

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