Effects of gamma irradiation on properties of PLA/flax composites

Xia, Xuelian; Shi, Xiangyang; Li, Wentao; He, Suqin; Zhu, Chengshen; Líu, Hao

doi:10.1007/s13726-020-00820-w

Cited by 17 publications

(6 citation statements)

References 38 publications

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“…Polyfunctional monomers have been applied predominantly in electron beam-induced crosslinking [ 27 , 30 , 31 , 32 , 33 , 34 , 35 ] although they have been also used for curing by γ-irradiation [ 36 , 37 , 38 ].…”

Section: Pla Crosslinking By Electron Beam or Gamma Irradiationmentioning

confidence: 99%

“…Various additives have been also added for PLA crosslinking by γ-rays. For example, blends of PLA with flax fibers were subjected to γ-irradiation [ 37 ], octavinyl-POSS (octavinyl polyhedral oligomeric silsesquioxane) was used as an additional crosslinking agent [ 44 ], or PLA was blended with epoxy-functional acrylic oligomer as a chain extender in order to receive higher M n and improved properties of PLA-based material [ 38 ].…”

Section: Pla Crosslinking By Electron Beam or Gamma Irradiationmentioning

confidence: 99%

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Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

2020

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Polylactide (PLA) is presently the most studied bioderived polymer because, in addition to its established position as a material for biomedical applications, it can replace mass production plastics from petroleum. However, some drawbacks of polylactide such as insufficient mechanical properties at a higher temperature and poor shape stability have to be overcome. One of the methods of mechanical and thermal properties modification is crosslinking which can be achieved by different approaches, both at the stage of PLA-based materials synthesis and by physical modification of neat polylactide. This review covers PLA crosslinking by applying different types of irradiation, i.e., high energy electron beam or gamma irradiation and UV light which enables curing at mild conditions. In the last section, selected examples of biomedical applications as well as applications for packaging and daily-use items are presented in order to visualize how a variety of materials can be obtained using specific methods.

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Section: Pla Crosslinking By Electron Beam or Gamma Irradiationmentioning

confidence: 99%

Section: Pla Crosslinking By Electron Beam or Gamma Irradiationmentioning

confidence: 99%

Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

2020

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“…The roughness analysis of these samples was carried out for It is reported in the literature that the irradiation can increase the surface roughness of the material and etch the surface of the material. 21,22 In this research, due to the large surface roughness of the pristine PEEK, both of the irradiation sources reduce the surface roughness of PEEK.…”

Section: Sem and Afm Analysismentioning

confidence: 91%

Influence of 25 MeV Si ions and 25 MeV O ions on the chemical and structural properties of PEEK films

Yang

2020

High Performance Polymers

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Poly (ether ether ketone) (PEEK) material can be used in a wide variety of fields, such as the aerospace, automotive, electronics, and nuclear industries. In this research, the irradiation effect of 25 MeV Si ions and 25 MeV O ions on the PEEK films was studied, focusing on the changes in chemical and structural properties. By analyzing surface morphology and microstructure evolution of the PEEK films after 25 MeV Si ion and 25 MeV O ion irradiation, particles were generated on surface of the PEEK after 25 MeV Si ion irradiation and black dots were generated on surface of the PEEK after 25 MeV O ion irradiation. The irradiation reduced the surface roughness of the PEEK films from the atomic force microscopy (AFM) results. The Fourier transform infrared (FTIR) results indicated that the groups and structure of the material were not changed by irradiation. The X-ray photoelectron spectroscopy (XPS) results showed that the contents of the chemical bonds C–C, C=O increased first and then decreased with the increasing of the fluences. The generated free radicals were observed by the electron paramagnetic resonance spectroscopy (EPR) at room temperature and the irradiation degradation mechanisms were analyzed. Thermal properties of the PEEK irradiated by 25 MeV O ions, indicating that a new secondary crystallization peak was found during the cooling stage. Consequently, the low fluences irradiation improves in the viscoelasticity and mechanical properties of PEEK films, while the high fluences irradiation reduces its performance.

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“…And it can be directly adapted to conventional processing operations established in the industry for immediate mass production. 14,15 The irradiation technology mainly uses gamma ray and electron beam (EB) produced by cobalt-60 as the source of radiation. 16 As reported previously, the number average molecular weight of PLA decreased with the increase in irradiation dose, which is caused by two degradation mechanisms of PLA exposed to gamma rays in the air, namely, main chain breakage and hydrogen abstraction chain breakage.…”

Section: Introductionmentioning

confidence: 99%

“…Firstly, it is inspired by the fact that irradiation can reduce the viscosity of PLA and further improve its spinnability. 13,14 We studied the effects of different irradiation doses on the molecular weight, viscosity and crystallinity of PLA. Then, by optimizing the weight ratio of irradiated PLA and pristine PLA, the composite MBs were successfully fabricated, and their structural properties, ltration performances and spinnability enhancement mechanism were investigated.…”

Section: Introductionmentioning

confidence: 99%

Regulation of polylactic acid using irradiation and preparation of PLA–SiO₂–ZnO melt-blown nonwovens for antibacterial and air filtration

Zhu

Dong

et al. 2023

RSC Adv.

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Effects of gamma irradiation on properties of PLA/flax composites

Cited by 17 publications

References 38 publications

Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

Influence of 25 MeV Si ions and 25 MeV O ions on the chemical and structural properties of PEEK films

Regulation of polylactic acid using irradiation and preparation of PLA–SiO₂–ZnO melt-blown nonwovens for antibacterial and air filtration

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Effects of gamma irradiation on properties of PLA/flax composites

Cited by 17 publications

References 38 publications

Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

Crosslinking of Polylactide by High Energy Irradiation and Photo-Curing

Influence of 25 MeV Si ions and 25 MeV O ions on the chemical and structural properties of PEEK films

Regulation of polylactic acid using irradiation and preparation of PLA–SiO2–ZnO melt-blown nonwovens for antibacterial and air filtration

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Regulation of polylactic acid using irradiation and preparation of PLA–SiO₂–ZnO melt-blown nonwovens for antibacterial and air filtration